About this guide
A Chrysler 8.25 locker must match the axle’s spline count, carrier/gear requirements and vehicle application. Pre-1997 assemblies commonly use 27-spline shafts; 1997-on Chrysler 8.25 applications commonly use 29 spline, but verify by pulling a shaft and checking the axle tag. These options are for the rear axle only where stated. None is a universal Chrysler fit.
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The picks, in detail
ARB RD93 Air Locker
Selectable ARB unit for Chrysler 8.25 rear axles with 29 splines and all ratios; the RD93 specification lists a 210 mm ring gear.
- 29 spline, 30.7 mm axle
- all gear ratios
- Chrysler 8.25 ring gear
- specific 29-spline fit
- selectable design
- requires air system and fitment check
Detroit Locker 187C179A
Full Detroit Locker for 1997-up 29-spline Chrysler 8.25/8.375 applications and all listed ratios.
- 29 spline
- 1997-up application
- all ratios listed
- specific part number
- automatic locking design
- not for 27-spline shafts
Detroit Locker 187C151A
The 27-spline Detroit alternative for 1976–1996 Chrysler 8.25/8.375 applications, rather than the 29-spline 179A.
- 27 spline
- 1976–1996 application
- all ratios listed
- specific early-axle part
- automatic locker
- not for late 29-spline shafts
OX C825-273-29 Locker
Cable-selectable OX locker for 29-spline Chrysler 8.25 axles with 2.73 and numerically higher gears; heavy-duty cover included.
- 29 spline
- 2.73 and numerically higher gears
- heavy-duty cover included
- mechanical, air or electric shift choices
- specific gear requirement
- no thick gears
OX C825-273-27 Locker
The OX version for factory 27-spline Chrysler 8.25 axles, also requiring 2.73 or numerically higher gears.
- 27 spline
- 2.73 and numerically higher gears
- Chrysler 8.25 housing
- matches early spline count
- selectable OX system
- confirm gear and axle before order
USA Standard Spartan SLC8.25-29
A Spartan automatic locker specifically listed for Chrysler/Dodge/Jeep 8.25 axles with 29-spline shafts.
- 29 spline
- Chrysler 8.25 application
- automatic locker
- lower cost than selectable units
- specific spline version
- not a 27-spline unit
USA Standard Spartan SLC8.25-27
The 27-spline Spartan version for earlier Chrysler 8.25 axles, not an interchangeable side-gear set.
- 27 spline
- Chrysler 8.25 application
- automatic locker
- early axle option
- specific spline part
- requires correct open-carrier configuration
Aussie XD-58229 Locker
A 29-spline Aussie locker listed for the Chrysler 8.25 Jeep Cherokee XJ rear axle.
- 29 spline
- Cherokee XJ application
- rear axle locker
- moderate price tier
- verify carrier and axle before purchase
Torq Locker TL-58229-TORQ
A Torq Locker differential listed for the Chrysler 8.25 rear axle with 29-spline shafts.
- 29 spline
- rear axle application
- automatic locker category
- specific product code
- lower-cost 29-spline option
- not a selectable differential
Detroit Truetrac 912A553
A gear-type limited-slip option for Chrysler 8.25 29-spline Jeep and Dodge applications, not a full locking differential.
- 29 spline
- limited-slip differential
- part 912A553
- different behavior from automatic locker
- specific 29-spline part
- not a selectable or full locker
What each one costs
Typical price, cheapest first. Tap a name to jump to that pick and its buy link.
Compare any three
| ARB RD93 Air Locker | Detroit Locker 187C179A | Detroit Locker 187C151A | |
|---|---|---|---|
| Price | $1,299.95–$1,900 | $1,146.99–$1,300 | $996.99–$1,150 |
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Buying tips
- Identify 27 versus 29 splines from the actual shaft; do not order from the vehicle name alone.
- Confirm ring-and-pinion ratio, carrier requirements and ring-gear bolt size before a differential installation.
- A locker or limited-slip changes handling behavior; use a qualified drivetrain installer when you are not equipped to set gear backlash and bearing preload.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.