USA Standard Spartan Locker For Chrysler 8.25in w/ 29 Spline Axles (Part #SL C8.25-29)
100% Traction. Low Cost. Easy Install.
You are tired of one wheel spinning in the mud. One tire on the rocks. One wheel in the snow. You are stuck. You need traction. You need both tires pulling. You need a locker.This is the USA Standard Spartan Locker. Part #SL C8.25-29. Fits Chrysler 8.25 inch rear ends with 29 spline axles.The Spartan Locker is a lunchbox locker. It replaces the spider gears in your factory open differential . No need to buy a whole new carrier. Simple. Cheap. Effective.How Does It Work?
The Spartan Locker is a mechanical locker. Always active. Always ready . When you step on the gas, it locks both axles together. Both tires pull. No spinning. No wasted power. When you turn, it unlocks. The tires spin at different speeds. The ratcheting sound is normal. That is the locker working .Why Spartan?
Simple design. No thrust washers to mess with. Patent-pending spring and pin design . The Spartan Locker is the most DIY-friendly locker on the market . Many experienced enthusiasts install the unit themselves . No ring gear removal on some applications . The couplers and drivers are made from 9310 steel, for added strength . It delivers reliable, 100% lockup traction at a low cost .Features & Benefits
- Lunchbox Locker Design: Replaces spider gears in your open differential carrier .
- 100% Lockup Power Transfer: When under load, both axles are locked together for maximum traction .
- Made from 9310 Steel: Strong. Durable. Resists wear .
- DIY-Friendly Install: Many installs do not require removing the differential .
- No Thrust Washers: Simple design. Nothing to wear out.
- Heavy-Duty Cross Pin Shaft: Included. Stronger than the factory part .
- Fits Chrysler 8.25in Rear Axles: With 29 spline axles.
- One-Year Warranty: USA Standard Gear backs it.
Vehicle Fitment
Exact fit for:- Chrysler 8.25 inch rear differentials with 29 spline axles .
Common applications include:- Jeep Cherokee XJ (rear)
- Jeep Grand Cherokee ZJ (rear)
- Dodge Dakota (rear)
- Dodge Durango (rear)
- Some Ram 1500s with the 8.25 rear
Does NOT fit:- Chrysler 8.25 with 27 spline axles
- Ford 8.8 or GM 8.5 rear ends (check for different Spartan models)
Important Notes
- Open Differential Only: This locker is designed for open differentials. It will NOT work with a factory limited-slip or Trak-Lok carrier.
- Street Manners: Mechanical lockers can be loud. They click and clunk on turns. That is normal . They can also cause the vehicle to pull when accelerating on the street . For a daily driver, consider a selectable locker.
- Carrier Strength: The Spartan Locker relies on the strength of the factory carrier. If you are running large tires and high horsepower, you may need a full-case locker for better durability .
- Prop 65 Warning: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer.
What Is In The Box?
Spartan Locker unit. Drivers. Couplers. Spacers. Springs. Alignment pins. Cross pin. Roll pin. Installation retaining wires. Instructions .FAQ
Is this hard to install?
It is a lunchbox locker. It is designed to be DIY-friendly . Many installs can be done without removing the carrier . Some applications require removing the ring gear and resetting backlash . Watch a YouTube video first.Does this fit my 1999 Jeep Cherokee XJ?
If you have a Chrysler 8.25 rear end with 29 spline axles, yes. Check your glovebox tag or count the axle splines when you pull the shafts. Will this fit my Dodge Dakota?
Yes, if it has the Chrysler 8.25 rear end. Most Dakotas with the V6 or small V8 have this axle. Why does my locker click?
That is the sound of the locker ratcheting . It is normal. It is loudest on tight turns. It gets quieter with miles . Can I use this on the street?
You can. But it will click and clunk. It may pull to one side when accelerating . A selectable locker is better for a daily driver.
[NB: Last Chance Deals item : Limited stock. Please confirm fitment before ordering. No returns on incorrect orders. Transit damage claims only.]
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Jake Hershey –
Installed this locker in my Chrysler 8.25 and it locked up instantly on the trail. Tough as nails and way more affordable than air lockers.
Adelwin Castellano –
Put the Spartan locker in my rear Chrysler 8.25 axle before a trip to Moab and it was the best off-road decision I’ve made. Traction on loose rock and sand was dramatically better. No more one-wheel-peel situations. The locker engages and disengages predictably without any scary behavior on the highway. Install was straightforward if you know your way around a differential. Great value compared to full Detroit lockers. My trail group was impressed.
Aaron Whitcomb –
Installed the Spartan locker in my Chrysler 8.25 rear end before a rock crawling trip and it performed flawlessly all weekend. Engagement is smooth on pavement, barely noticeable during normal driving, but locks up hard the moment I need traction off-road. Instructions were clear and my install went smoother than expected for a first-timer with basic gear knowledge. Climbed obstacles that would have left me spinning one wheel with an open diff. USA Standard clearly builds these to a high tolerance. Couldn’t be happier with the traction improvement.