{"title":"Alliance \/ Detroit RT40-4N Rear Differentials for Sale","description":"\u003cp\u003eAlliance \/ Detroit RT40-4N Rear Differentials\u003c\/p\u003e","products":[{"product_id":"detroit-alliance-rt40-4n-differential-assembly-front-rear-3-08-ratio-1","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) 3.08 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eGet reliable, ready-to-install drivetrain performance with the DETROIT ALLIANCE RT40-4N Differential Assembly, designed for both front and rear applications and a 3.08:1 gear ratio.\u003c\/p\u003e\n\u003cp\u003eAlliance is known for durability and precision, and this differential assembly is engineered to meet the standards expected from a leading automotive component brand. The part is identified by DART-40-4N and is built to integrate smoothly with your vehicle’s drivetrain system, delivering steady torque delivery and efficient power transfer.\u003c\/p\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e DETROIT ALLIANCE\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e RT40-4N Differential Assembly\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Front and rear\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGear ratio:\u003c\/strong\u003e 3.08\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e DART-40-4N\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhy this RT40-4N stands out: its robust construction is designed for long-term performance in demanding drivetrain environments, providing consistent power distribution and alignment with original equipment expectations. For best results, verify compatibility with your vehicle’s drivetrain specifications and cross-reference the part number (DART-40-4N) with your service manual or parts catalog to ensure a proper fitment.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/14.png?v=1754974263\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/57_fc3368a0-5d6f-4bcd-b27a-ad1242870943.png?v=1754974265\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/14_dc25cc93-d812-4868-8b3c-cfeefabd8838.jpg?v=1754974266\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/57_aecf8063-cfac-4d9e-b371-790880283c5e.jpg?v=1754974268\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/1_078072ae-d818-461d-aa45-46b41fa92817.jpg?v=1754974270\"\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":42566726778966,"sku":"EB-167513249049","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_d9eb991a-2498-4f02-8c9e-6b4457f9157b.png?v=1785249425"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-assembly-2-85-ratio","title":"Alliance RT40-4N Front Rear Differential Carrier Assembly 2.85 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N Front Rear Differential Carrier Assembly with a 2.85 gear ratio, a genuine OEM part designed for the 2017 Cascadia.\u003c\/p\u003e\n\u003cp\u003eThis good-used, inspected differential carrier preserves original gear mesh and fitment, providing reliable operation within the Cascadia’s drivetrain.\u003c\/p\u003e\n\u003cp\u003eWhy this one: authentic Alliance OEM quality, compatible with 2017 Cascadia models, and inspected to ensure proper bearing and housing condition before installation.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eGear ratio: 2.85\u003c\/li\u003e \u003cli\u003eOEM part: genuine Alliance replacement\u003c\/li\u003e \u003cli\u003eCompatibility: 2017 Cascadia\u003c\/li\u003e \u003cli\u003eCondition: good used, inspected\u003c\/li\u003e \u003cli\u003eShipping: $200 flat rate freight to a commercial address with a dock or forklift (lower 48 states)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":42566735855702,"sku":null,"price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_f99ca56d-4284-4c6b-adc1-f57778cced26.jpg?v=1784999516"},{"product_id":"detroit-alliance-rt40-4n-differential-assembly-front-rear-2-61-ratio","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) 2.61 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eDetroit Alliance RT40-4N Front Rear Differential Assembly, 2.61:1 gear ratio.\u003c\/p\u003e\n\u003cp\u003eHundreds of RT40-4N units are currently in stock.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eModel: RT40-4N\u003c\/li\u003e \u003cli\u003eConfiguration: Front Rear Differential Assembly\u003c\/li\u003e \u003cli\u003eGear ratio: 2.61:1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShipping: $200 flat freight within the lower 48 states; must be shipped to a commercial address with a dock or forklift; residential delivery is not available.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":42566736674902,"sku":"EB-167513249049","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_d9b5120e-989a-45ee-b8bb-f0cc12cf4fde.png?v=1785249365"},{"product_id":"alliance-rt40-4n-rear-rear-differential-carrier-3-31-ratio-41-spline-8210","title":"Alliance RT40-4N Rear Rear Differential Carrier 3.31 Ratio 41 Spline 8210","description":"\u003cdiv\u003e\n\u003cp\u003eInspected Alliance RT40-4N rear differential carrier with a 3.31 gear ratio and 41-spline output. Part number R6813510305.\u003c\/p\u003e\n\u003cp\u003eCondition: Inspected and in good condition.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eModel: Alliance RT40-4N\u003c\/li\u003e \u003cli\u003eType: Rear differential carrier\u003c\/li\u003e \u003cli\u003eGear ratio: 3.31\u003c\/li\u003e \u003cli\u003eSpline count: 41\u003c\/li\u003e \u003cli\u003ePart number: R6813510305\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShipping: Freight is available within the lower 48 to a business or commercial address with loading dock or forklift.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":42566746341462,"sku":null,"price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_6a2835a3-0592-42bf-b45e-054d43a03abb.png?v=1785249314"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-3-31-ratio-41-spline-8211","title":"Alliance RT40-4N Front Rear Differential Carrier 3.31 Ratio 41 Spline 8211","description":"\u003cdiv\u003e\n\u003cp\u003eInspected, good-condition Alliance RT40-4N Front\/Rear Differential Carrier with a 3.31 gear ratio and 41-spline input (part 8211).\u003c\/p\u003e\n\u003cp\u003eThis carrier is designed as a replacement for Alliance RT40-4N differential assemblies, preserving the 3.31 gear ratio and 41-spline interface to ensure proper engagement with matching axles and gears during rebuilds or repairs.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBrand: Alliance\u003c\/li\u003e \u003cli\u003eModel\/Carrier: RT40-4N Front\/Rear Differential Carrier\u003c\/li\u003e \u003cli\u003eGear ratio: 3.31\u003c\/li\u003e \u003cli\u003eSpline count: 41\u003c\/li\u003e \u003cli\u003ePart\/Stock number: 8211\u003c\/li\u003e \u003cli\u003eCondition: Inspected, good\u003c\/li\u003e \u003cli\u003eFreight: $200 flat rate within the lower 48 to a business or commercial address with loading dock or forklift\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":42566746669142,"sku":null,"price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_a8d2e01f-d847-4ce1-8541-de23b8685e8a.png?v=1785249315"},{"product_id":"detroit-alliance-rt40-4n-differential-assembly-front-rear-3-08-ratio-2","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) 3.08 Ratio","description":"\u003cdiv\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxNDIw\/z\/x-EAAOSwA5NoJJNN\/$_14.PNG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxNDIw\/z\/x-EAAOSwA5NoJJNN\/$_57.PNG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTI4MFgxNjAw\/z\/e6gAAOSw-Z1oJJNK\/$_14.JPG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTI4MFgxNjAw\/z\/e6gAAOSw-Z1oJJNK\/$_57.JPG?set_id=880000500F\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMzA4\/z\/~cgAAOSwsyZoJJJb\/$_57.PNG?set_id=880000500F\"\u003e \u003cp\u003eThe DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) with a 3.08 ratio delivers reliable power transfer for both front and rear axle applications. Built by Alliance for durability and precision, this unit is designed to meet the demanding standards of today’s drivetrain systems.\u003c\/p\u003e \u003cp\u003eKey details at a glance\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eGear ratio: 3.08\u003c\/li\u003e \u003cli\u003eDual-application design: suitable for front and rear axles\u003c\/li\u003e \u003cli\u003ePart number: DART-40-4N\u003c\/li\u003e \u003cli\u003eBrand: DETROIT ALLIANCE\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this differential assembly? It’s engineered for seamless integration with your vehicle’s drivetrain, delivering robust performance and dependable operation for enthusiasts and professionals who require precise, reliable torque distribution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358507171926,"sku":"EB-167513249049","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_5d606a15-f0ad-466e-ad0d-9edc4f0036f1.png?v=1785249259"},{"product_id":"detroit-alliance-rt40-4n-differential-assembly-front-rear-3-08-ratio-3","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) 3.08 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eThe DETROIT ALLIANCE RT40-4N Differential Assembly delivers balanced torque and reliable drivetrain performance with a 3.08:1 gear ratio for front and rear axles.\u003c\/p\u003e\n\u003cp\u003eDesigned for both front and rear installations, the RT40-4N uses the part number DART-40-4N and is built by Detroit Alliance to meet standard automotive drivetrain requirements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: Detroit Alliance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel\u003c\/strong\u003e: RT40-4N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Differential Assembly (Front\/Rear)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear ratio\u003c\/strong\u003e: 3.08:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: DART-40-4N\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEngineered for seamless integration with compatible drivetrain housings, this differential assembly supports maintenance, rebuilds, or replacements where a 3.08 ratio is required, offering dependable support for daily driving and work-duty use.\u003c\/p\u003e\n\u003cp\u003eBefore purchasing, confirm your axle uses a 3.08 gear ratio and that the RT40-4N (DART-40-4N) matches your vehicle’s differential specifications to ensure proper fit and performance.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxNDIw\/z\/x-EAAOSwA5NoJJNN\/$_14.PNG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxNDIw\/z\/x-EAAOSwA5NoJJNN\/$_57.PNG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTI4MFgxNjAw\/z\/e6gAAOSw-Z1oJJNK\/$_14.JPG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTI4MFgxNjAw\/z\/e6gAAOSw-Z1oJJNK\/$_57.JPG?set_id=880000500F\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMjQ0\/z\/zIgAAeSwJztoO1ep\/$_1.JPG?set_id=8800005007\"\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358511530070,"sku":"EB-167513249049","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_a8b04f94-d930-437e-9f7a-469915616f52.png?v=1785249258"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-assembly-2-85-ratio-1","title":"Alliance RT40-4N Front Rear Differential Carrier Assembly 2.85 Ratio","description":"\u003cdiv\u003eAlliance RT40-4N Front\/Rear Differential Carrier Assembly with a 2.85:1 gear ratio is a genuine OEM used part, inspected and ready for installation in a 2017 Cascadia. This differential carrier assembly is the backbone of the axle’s gearing, providing the mounting platform for the differential and housing the gear set at the specified 2.85:1 ratio. It is designed for front\/rear axle configurations as found on compatible trucks. - Condition: Used, inspected, good for service\n- Compatibility: 2017 Cascadia\n- Gear ratio: 2.85:1\n- Part type: Front\/Rear Differential Carrier Assembly\n- Shipping: $200 flat rate freight to a commercial address with a dock or forklift; must ship to a commercial address with a dock or forklift; lower 48 states Ideal for a drivetrain rebuild or replacement to restore drive performance without the cost of a new part. This RT40-4N carrier offers a precise ratio and OEM construction to fit your Cascadia’s differential system.\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358523555926,"sku":null,"price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_9f20cef3-81c4-41cd-819d-d24b21ecbd24.jpg?v=1784999513"},{"product_id":"detroit-alliance-rt40-4n-differential-assembly-front-rear-2-61-ratio-1","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) 2.61 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eThe Detroit Alliance RT40-4N Differential Assembly (Front\/Rear) with a 2.61:1 gear ratio provides a versatile, ready-to-install solution for heavy-duty trucks requiring a mid-range final drive.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Front or rear differential assembly for the RT40-4N platform\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGear ratio:\u003c\/strong\u003e 2.61:1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand\/model:\u003c\/strong\u003e Detroit Alliance RT40-4N\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e Heavy-duty truck drivetrain component for power transfer across axles\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFitment considerations:\u003c\/strong\u003e Verify compatibility with your axle type and existing gear set before replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoosing this RT40-4N differential assembly can simplify fleet maintenance by providing a widely compatible, rebuild-friendly unit for trucks configured with this model. Confirm your axle and carrier specifications to ensure proper installation and gearing compatibility for reliable operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358524244054,"sku":"EB-167513249049","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_021f009a-1c3c-4521-adca-1e4340d02be9.png?v=1785249185"},{"product_id":"alliance-rt40-4n-rear-rear-differential-carrier-3-31-ratio-41-spline-8210-1","title":"Alliance RT40-4N Rear Rear Differential Carrier 3.31 Ratio 41 Spline 8210","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N rear differential carrier delivers a ready-to-install 3.31 gear ratio with 41-spline output, model 8210. This unit is inspected and listed as Good condition, making it a viable rebuild candidate or component replacement for compatible rear axles.\u003c\/p\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eModel: RT40-4N\u003c\/li\u003e \u003cli\u003eCarrier type: Rear differential carrier\u003c\/li\u003e \u003cli\u003eGear ratio: 3.31\u003c\/li\u003e \u003cli\u003eSpline count: 41\u003c\/li\u003e \u003cli\u003ePart Number: R6813510305\u003c\/li\u003e \u003cli\u003eCondition: Inspected Good\u003c\/li\u003e \u003cli\u003eIdentification: 8210\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eShipping and handling\u003c\/h2\u003e\n\u003cp\u003eFlat-rate freight: $200 within the lower 48 to a business or commercial address with loading dock or forklift access.\u003c\/p\u003e \u003cp\u003eImages:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMjAw\/z\/~bgAAeSwnRFoZyJL\/$_15.PNG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMjAw\/z\/~bgAAeSwnRFoZyJL\/$_57.PNG?set_id=880000500F\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMjAw\/z\/SPAAAeSwriBox1NS\/$_57.PNG?set_id=880000500F\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTI4NFgxNjAw\/z\/KkgAAeSwstpoxw1Y\/$_57.JPG?set_id=880000500F\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTA1N1gxNjAw\/z\/1m0AAeSw8PVoxZvx\/$_57.JPG?set_id=880000500F\"\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358547181654,"sku":null,"price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_41ebd49a-2e8b-4ddb-a5de-c114b5a15038.png?v=1785249127"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-3-31-ratio-41-spline-8211-1","title":"Alliance RT40-4N Front Rear Differential Carrier 3.31 Ratio 41 Spline 8211","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N Front\/Rear Differential Carrier with a 3.31:1 gear ratio and 41-spline interface offers a robust, direct replacement for compatible heavy-duty axles.\u003c\/p\u003e\n\u003cp\u003eUsed, inspected, and deemed Good, this carrier carries part number 8211 and is suited for fleets performing front or rear differential maintenance where precise gear engagement matters.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: RT40-4N\u003c\/li\u003e\n\u003cli\u003eType: Front\/Rear differential carrier\u003c\/li\u003e\n\u003cli\u003eGear ratio: 3.31:1\u003c\/li\u003e\n\u003cli\u003eSpline count: 41\u003c\/li\u003e\n\u003cli\u003ePart number: 8211\u003c\/li\u003e\n\u003cli\u003eCondition: Inspected Good\u003c\/li\u003e\n\u003cli\u003eShipping: Flat Rate Freight within the lower 48 to a business or commercial address with loading dock or forklift\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358547509334,"sku":null,"price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_60386062-08c0-42b9-9889-a8f692fdbd31.png?v=1785249127"},{"product_id":"detroit-alliance-rt40-4n-differential-assembly-front-rear-3-08-ratio-4","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Front Rear) 3.08 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eExperience dependable power transfer with the DETROIT ALLIANCE RT40-4N Differential Assembly, a front\/rear unit engineered for a 3.08:1 gear ratio and seamless integration with your drivetrain. Alliance’s durable construction and precision manufacturing deliver consistent torque delivery and long service life in demanding conditions. Part number DART-40-4N identifies this authentic replacement for compatible drivetrains.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eGear ratio: 3.08:1\u003c\/li\u003e \u003cli\u003eApplications: front and rear differential assemblies\u003c\/li\u003e \u003cli\u003eConstruction: robust engineering with high manufacturing standards\u003c\/li\u003e \u003cli\u003eFit: designed for straightforward installation and seamless drivetrain compatibility\u003c\/li\u003e \u003cli\u003eTarget users: enthusiasts and professionals maintaining optimal drivetrain performance\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this differential stands out: The RT40-4N combines Detroit Alliance's reputation for durability with a precise, predictable power transfer. Its dual-axle compatibility supports symmetric performance on front and rear applications, helping maintain efficiency and reliability across varying loads and driving styles. Installed as a direct replacement in compatible drivetrains, it supports smooth engagement and consistent drivetrain performance without compromise.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358559895638,"sku":"EB-167513249049","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_2eeab287-17ad-4f2a-b91a-b9dd5fb38dae.png?v=1785249066"},{"product_id":"detroit-alliance-rt40-4n-differential-assembly-rear-rear-3-08-ratio-1","title":"DETROIT ALLIANCE RT40-4N Differential Assembly (Rear, Rear) 3.08 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eRear differential assembly with a 3.08 gear ratio delivers precise torque transfer and efficient performance for your vehicle’s rear end. The DETROIT ALLIANCE RT40-4N Differential Assembly is built for durability and smooth engagement, engineered by Alliance for reliability you can feel in every drive.\u003c\/p\u003e \u003cp\u003eThis RT40-4N model is designed as a rear differential assembly suitable for replacement or as the foundation of a custom setup. The 3.08:1 ratio optimizes gear engagement and highway efficiency, helping improve response and stability under load while maintaining steady on-road feel.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eModel: RT40-4N Differential Assembly\u003c\/li\u003e \u003cli\u003ePosition: Rear (rear differential)\u003c\/li\u003e \u003cli\u003eGear ratio: 3.08:1\u003c\/li\u003e \u003cli\u003eBrand: Detroit Alliance\u003c\/li\u003e \u003cli\u003eUse cases: replacement for worn differential components; suitable for performance or custom builds\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eCrafted for durability and consistent performance, this differential assembly aims to deliver a smoother ride and responsive handling by maintaining reliable gear engagement across driving conditions.\u003c\/p\u003e \u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMzA4\/z\/~cgAAOSwsyZoJJJb\/$_14.PNG?set_id=880000500F\"\u003e\n\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMzA4\/z\/~cgAAOSwsyZoJJJb\/$_57.PNG?set_id=880000500F\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMjQ0\/z\/zIgAAeSwJztoO1ep\/$_1.JPG?set_id=8800005007\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMDQx\/z\/l60AAeSw3W5oOx51\/$_1.JPG?set_id=8800005007\"\u003e\n\u003cimg class=\"pimg\" src=\"https:\/\/i.ebayimg.com\/00\/s\/MTYwMFgxMTQy\/z\/B64AAeSwvw5oOx22\/$_1.JPG?set_id=8800005007\"\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":43358560682070,"sku":"EB-167513241472","price":800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/24_57_60d411d6-41d5-4152-bf66-6a0ef5ddc95f.png?v=1785249066"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-2-41-ratio","title":"Alliance RT40-4N Front Rear Differential Carrier 2.41 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N Front\/Rear Differential Carrier, 2.41 gear ratio, engineered to match your vehicle’s differential with ease.\u003c\/p\u003e\n\u003cp\u003eInspected and ready to drop in, this carrier is prepared for installation in compatible front or rear axles that require the RT40-4N 2.41:1 ratio.\u003c\/p\u003e\n\u003cp\u003eKey attributes at a glance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBrand: Alliance\u003c\/li\u003e \u003cli\u003eModel: RT40-4N\u003c\/li\u003e \u003cli\u003eGear ratio: 2.41\u003c\/li\u003e \u003cli\u003eCarrier type: Front\/Rear differential carrier\u003c\/li\u003e \u003cli\u003eCondition: Inspected and ready to drop in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBefore purchasing, verify that your axle requires the RT40-4N carrier and that the 2.41 ratio aligns with your drivetrain specifications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":45394507890774,"sku":null,"price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/c59463a6-1156-418b-b328-a5c657f5d114.jpg?v=1784999484"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-3-30-ratio","title":"Alliance RT40-4N Front Rear Differential Carrier 3.30 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N 3.30 ratio front rear differential carrier, inspected and drop-in ready.\u003c\/p\u003e\n\u003cp\u003eThis differential carrier is configured with a 3.30 gear ratio for front\/rear axle use and has been inspected to ensure proper function, enabling a straightforward, drop-in installation and minimizing downtime during axle servicing.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eModel: RT40-4N\u003c\/li\u003e \u003cli\u003eGear ratio: 3.30\u003c\/li\u003e \u003cli\u003eType: Front rear differential carrier\u003c\/li\u003e \u003cli\u003eCondition: Inspected, drop-in ready\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShipping: $200 flat-rate freight to a commercial address with dock or forklift within the lower 48.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":45438359961686,"sku":null,"price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/86ebddc4-0489-4c2c-940b-2e2bf1cb72a9.jpg?v=1784999484"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-3-23-ratio","title":"Alliance RT40-4N Front Rear Differential Carrier 3.23 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N Front\/Rear Differential Carrier with a 3.23 gear ratio, inspected and ready to drop in.\u003c\/p\u003e\n\u003cp\u003eDesigned for straightforward integration in compatible front or rear axle assemblies, this carrier provides a known gear ratio and a tested condition to speed up your rebuild or upgrade.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Alliance RT40-4N\u003c\/li\u003e\n\u003cli\u003eType: Front\/Rear Differential Carrier\u003c\/li\u003e\n\u003cli\u003eGear ratio: 3.23\u003c\/li\u003e\n\u003cli\u003eCondition: Inspected; ready to drop in\u003c\/li\u003e\n\u003cli\u003eShipping: $200 flat-rate freight to a commercial address with dock or forklift within the Lower 48\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":45438365302870,"sku":null,"price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/19d21fe8-8c7a-41b1-be13-bd945f3f4d90.jpg?v=1784999484"},{"product_id":"alliance-rt40-4n-front-rear-differential-carrier-3-47-ratio","title":"Alliance RT40-4N Front Rear Differential Carrier 3.47 Ratio","description":"\u003cdiv\u003e\n\u003cp\u003eAlliance RT40-4N front\/rear differential carrier with a 3.47:1 gear ratio. Inspected and ready to drop in for installation.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eGear ratio: 3.47:1\u003c\/li\u003e \u003cli\u003eModel: Alliance RT40-4N front\/rear differential carrier\u003c\/li\u003e \u003cli\u003eCondition: Inspected, ready to drop in\u003c\/li\u003e \u003cli\u003eShipping: $200 flat-rate freight to a commercial address with dock or forklift within the lower 48\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Alliance","offers":[{"title":"Default Title","offer_id":45438369923158,"sku":null,"price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/b60dec1f-fe82-4464-9c7d-54186c7382ff.jpg?v=1784999484"},{"product_id":"rt40-4n-3-08-ratio-front-rear","title":"RT40-4N 3.08 Ratio Front Rear","description":"\u003cp\u003eRt40-4n front rear in 3.08 ratio.\u003c\/p\u003e","brand":"ALLIANCE","offers":[{"title":"Default Title","offer_id":45562665271382,"sku":null,"price":1395.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/8370\/1590\/files\/20260728_182939.png?v=1786751044"}],"url":"https:\/\/www.dieselengineking.com\/collections\/alliance-detroit-rt40-4n-rear-differentials-for-sale.oembed?page=3","provider":"Nationwide Diesel Engine Sales","version":"1.0","type":"link"}