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The Eaton Detroit Truetrac Differential (Part #917A732) is a robust, helical-gear limited-slip differential designed for GM 9.5" and 9.75" axles with 33-spline shafts and 3.42 or 3.73 gear ratios. Known for its strength, smooth operation, and maintenance-free design, the Truetrac automatically transfers torque to the wheel with the most traction—delivering exceptional control and stability under varying load and terrain conditions.
Built entirely with precision-cut gears and no wearable clutch components, the Truetrac provides quiet, consistent, and durable performance for heavy-duty trucks, high-torque street builds, and off-road vehicles.
Note: The factory oil drain plug may require minor relief grinding for proper fitment. Eaton recommends using a GL-5 rated 80W-90 petroleum-mineral based gear oil and avoiding synthetic oils or friction modifiers for best performance.
Features:
Helical-gear limited-slip design for smooth, automatic torque transfer
Maintenance-free operation—no clutch packs or additives needed
All-gear construction for long-lasting strength and reliability
Optimized for GM 9.5"/9.75" axles with 33-spline shafts and 3.42–3.73 gear ratios
Factory drain plug may need minor relief grinding for installation clearance
Perfect for street, towing, and off-road performance applications
| Specification | Detail |
|---|---|
| Part Number | 917A732 |
| Differential Type | Limited Slip (LSD) |
| Axle Model | GM 9.5" / 9.75" |
| Spline Count | 33 |
| Ring Gear Ratio | 3.42, 3.73 |
| Ring Gear Size | 9.5 in |
| Weight | 30.7 lb |
| Oil Recommendation | GL-5 80W-90 mineral gear oil only (no synthetic or friction modifiers) |
| Fitment Note | Factory oil drain plug may require relief grinding |
Fitment:
Designed for GM 9.5" / 9.75" rear axles, commonly used in late-model GM trucks and SUVs. Ideal for applications requiring improved traction and control under load.
Ideal Usage:
Off-Road: Rock Crawl, Light Trail, Sand Sports, Extreme Off-Road, Work Truck / Towing
On Road: Street & Muscle, Circle Track, Drag Racing, Restoration, Work Truck / Towing
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2017 | Ram | 1500 | Big Horn |
| 2012-2017 | Ram | 1500 | Express |
| 2013-2017 | Ram | 1500 | HFE |
| 2011-2017 | Ram | 1500 | Laramie |
| 2014-2015 | Ram | 1500 | Laramie Limited |
| 2011-2017 | Ram | 1500 | Laramie Longhorn |
| 2015-2017 | Ram | 1500 | Limited |
| 2014-2017 | Ram | 1500 | Lone Star |
| 2011-2016 | Ram | 1500 | Outdoorsman |
| 2013 | Ram | 1500 | R/T |
| 2015-2017 | Ram | 1500 | Rebel |
| 2011-2017 | Ram | 1500 | SLT |
| 2014-2017 | Ram | 1500 | Special Service |
| 2011-2017 | Ram | 1500 | Sport |
| 2011-2012 | Ram | 1500 | ST |
| 2011-2017 | Ram | 1500 | Tradesman |
| 2012 | Ram | 1500 | Tradesman HD |
We are open Monday-Friday from 8am-6pm EST
Yes, customers located in and around the the Piedmont area are welcome to pick up their items from our retail location during normal business hours. Our address is:
Elite Race Fab
1514 Holbrook St Suite D-F
Greensboro, NC 27403
Elite Race Fab offers free ground shipping & handling to our retail customers within the lower 48 contiguous United States on most orders totaling $159.99 and higher, when the item being purchased is not a Freight/LTL item! Orders under $159.99 will be subject to a nominal $13.99 Flat shipping charge. Some exceptions and/or exclusions apply, in those scenarios you will be advised of any additional charges in the item details/description stating shipping exclussions/freight shipping required etc.
In regards to expedited and international shipping each order will need to be quoted on a case by case basis. You can obtain a quote two ways:
- From your shopping cart select "Request a Quote" prior to placing your order. We will review your proposed order and promptly respond with shipping estimates.
- Complete your order ahead of time indicating either expedited or international shipping during the checkout process. We will promptly determine shipping rates for your order and email you for approval and additional payment.
-Give us a call and we can ensure your item is shipped right then, to ensure you have it in time for your deadline.
We have been committed to offering all of our customers the lowest pricing throughout our website day in and day out. We value your business so much that we go a step further than our competitors. We use a third party software that proactively monitors all our competitor's websites/pricing so that we can make adjustments accordingly if needed to have the lowest prices. Thats right, no need to spend hours searching for the lowest prices, as ours will be the lowest.
As far as price matching, we dont want to write a check we cant cash, but we certainly want to earn your business. With that said, we will go above and beyond to match our competitor's pricing when it is needed. Simply email us, click the live contact button, or give us a call and be sure to have a link to our competitor's site and please factor in any shipping and handling their website will be charging. We will then ensure you get the lowest price, and either match or beat their pricing.
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