--- product_id: 352302622 title: "Eaton 912A585 Detroit Truetrac 27 Spline Differential for Dana 30" brand: "eaton" price: "2877.28 DT" currency: TND in_stock: true category: "Eaton" url: https://www.desertcart.tn/products/352302622-eaton-912a585-detroit-truetrac-27-spline-differential-for-dana-30 store_origin: TN region: Tunisia --- # 3.73+ ring gear ratio for torque 27 spline gear teeth precision 7.2 inch ring gear size Eaton 912A585 Detroit Truetrac 27 Spline Differential for Dana 30 **Brand:** eaton **Price:** 2877.28 DT **Availability:** βœ… In Stock ## Summary > πŸš€ Elevate your ride with the legendary Detroit Truetrac – where toughness meets precision. ## Quick Answers - **What is this?** Eaton 912A585 Detroit Truetrac 27 Spline Differential for Dana 30 by eaton - **How much does it cost?** 2877.28 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/352302622-eaton-912a585-detroit-truetrac-27-spline-differential-for-dana-30) ## Best For - eaton enthusiasts ## Why This Product - Trusted eaton brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Powerhouse:** Perfect for everything from rock crawling and drag racing to street muscle and restoration projects. - β€’ **Effortless Reliability:** No wearable parts means zero maintenanceβ€”just consistent, dependable grip when it counts. - β€’ **Precision Fit for Dana 30:** Optimized 27 spline design and 1.16-inch axle shaft diameter for seamless Wrangler JK front axle integration. - β€’ **Unmatched Helical Gear Tech:** First-ever helical gear LSD delivering smooth, quiet, and maintenance-free traction. - β€’ **Built for Rugged Performance:** Durable alloy steel construction engineered for extreme off-road and towing demands. ## Overview The Eaton 912A585 Detroit Truetrac is a pioneering helical gear limited slip differential designed for Dana 30 front axles, featuring 27 spline teeth, a 7.2-inch ring gear, and a 3.73+ gear ratio. Crafted from durable alloy steel, it offers maintenance-free, smooth, and quiet operation ideal for off-road, towing, and high-performance applications. ## Description The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction recognized not only for its toughness, but its smooth and quiet operation as well.Proven design, low cost and effective performance all make the Detroit Truetrac limited slip differential the ideal choice for a wide variety of vehicle applications. No maintenance - Just Traction. Vehicle Usage: Off-Road - Rock Crawl, Work Truck / Towing, Restoration, Extreme Off-Road, Circle Track, Drag Racing, Work Truck / Towing, Light Trail / Sand Sports, Street and Muscle ## Features - Differential Type: Limited Slip (LSD); Gear Spline Tooth Count: 27 EA - Ring Gear Size: 7.2 IN, Ring Gear Ratio: 3.73 & up - Axle Description: Dana 30, Wrangler JK ; Axle Location: Front ; Axle Shaft Diameter: 1.16 inches - Catalog Notes: Applies to non-disconnect only ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001DN9R3E | | Best Sellers Rank | #164,964 in Automotive ( See Top 100 in Automotive ) #62 in Car Differential Assembly Kits | | Brand Name | Eaton | | Country Of Origin | USA | | Customer Reviews | 4.5 4.5 out of 5 stars (72) | | Global Trade Identification Number | 00804314213992 | | Included Components | Differential | | Item Diameter | 1.16 Inches | | Item Type Name | Differential | | Item Weight | 8 kg | | Manufacturer | Eaton | | Material Type | Alloy Steel | | Model | 912A585 | | Number of Items | 1 | | Number of Teeth | 27 | | Part Number | 912A585 | | UPC | 804314213992 | ## Product Details - **Brand:** Eaton - **Colour:** Silver - **Material:** Alloy Steel - **Product dimensions:** 21.3D x 21.3W x 21.8H centimeters ## Images ![Eaton 912A585 Detroit Truetrac 27 Spline Differential for Dana 30 - Image 1](https://m.media-amazon.com/images/I/71sNq3zAv9L.jpg) ## Questions & Answers **Q: I ordered this unit for a cj-5 with dana 30 front axle, site says it will fit. it does not fit! can i get contact information for my mechanic please?** A: You probably have a different axle , dana 44 maybe **Q: I'm planing to install it on my jku 2016 sahara (front dana 30) in replacement of stock open diff. what bearings/shims kit should i use ? thx!** A: Not the answer your wanting, but in my case they sent the wrong differential but correct box. Everything was back ordered so when I installed diff it was after the 30 days so no return possible, so check. **Q: Does this kit come with new bearings and crush sleeve?** A: This kit does not provide any carrier bearings, nor carrier shims, nor pinion bearings, nor pinion shims, nor crush sleeve. **Q: Does this carrier fit size Yukon Gear Ratio 4.11 dana 30, jeep wrangler yj?** A: Consult manufacturer before choosing, and be sure you go with the numerically higher version. Believe it is 3.73 and numerically higher version. ## Frequently Bought Together - Eaton 912A585 Detroit Truetrac 27 Spline Differential for Dana 30 - Yukon Gear & Axle - Gear & Install Kit for Jeep JK non-Rubicon 4.88 Ratio - includes ring and pinion (4.88 ratio) - YGK013 - Eaton 913A589 Detroit Truetrac Rear 30 Spline Differential for Dana 44 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/352302622-eaton-912a585-detroit-truetrac-27-spline-differential-for-dana-30](https://www.desertcart.tn/products/352302622-eaton-912a585-detroit-truetrac-27-spline-differential-for-dana-30) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-16*