Yukon Gear & Axle
Yukon Gear & Axle SL M20-29 USA Standard Spartan Locker For Model 20 Diff with 29 Spline Axles / Incl Heavy-Duty Cross Pin Shaft
Yukon Gear & Axle SL M20-29 USA Standard Spartan Locker For Model 20 Diff with 29 Spline Axles / Incl Heavy-Duty Cross Pin Shaft
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Photographs show a representative part from this product family. The axle model, gear ratio and spline count in the specifications below are what define this exact part number.
Genuine Yukon Gear & Axle part.
The Spartan Locker is a lunchbox locker that delivers reliable, 100% lockup traction at a low cost. It's design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap!
Key Features
- Replaces the spiders in a standard carrier case
Fits These Vehicles
- Fits 1968-1970 American Motors AMX
- Fits 1978-1979 American Motors Concord
- Fits 1970-1977 American Motors Hornet
- Fits 1968-1974 American Motors Javelin
- Fits 1971-1978 American Motors Matador
- Fits 1975-1980 American Motors Pacer
- Fits 2002-2004 Hummer H1
- Fits 2006 Hummer H1
- Fits 1976-1983 Jeep CJ5
- Fits 1976-1986 Jeep CJ7
- Fits 1976-1986 Jeep J10
- Fits 1981-1986 Jeep Scrambler
- Fits 1979-1986 Jeep Wagoneer
Please verify exact fitment for your trim and engine before ordering.
Specifications
- Brand: Yukon Gear & Axle
- Manufacturer Part Number: SL M20-29
- Type: Differential Spool
- Axle Model: Model 20
- Pinion Spline Count: 29
- Product Line: USA Standard
- Carrier Type: Locker
Images are for illustrative purposes. The product you receive may differ in finish or packaging from the photograph.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Manufacturer's Warranty — Yukon Gear & Axle
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Manufacturer's Warranty — Yukon Gear & Axle
Yukon Gear & Axle warrants to the original retail purchaser that its products are free from defects in materials and workmanship, and the term is set by product line rather than by one figure for the whole catalogue. Ring & pinion gear sets, carriers, yokes, install kits (BK, MK, PK, YK), spider gear kits, tools and YP-series parts carry one (1) year; Positraction differentials carry one year and exclude premature clutch wear and abuse. Zip Lockers carry six (6) years and Grizzly Lockers one year, each with collateral parts and labor coverage up to $2,000 on the terms Yukon publishes. 1541H front and rear axles carry ten (10) years, while 4340 chromoly axles (YA W series), spools, Super Joints, YHC drive flanges, Hardcore locking hubs and Hardcore diff covers carry a Limited Lifetime warranty for as long as the original purchaser owns the vehicle the part was first installed in (not transferable). Coverage assumes the product was installed and maintained per Yukon instructions and not modified, abused or damaged in an accident, and Yukon may void the warranty on vehicles running tires larger than its Maximum Recommended Tire Size for that axle. On a verified defect Yukon will repair or replace the product at its choice. Labor, road service, loss of vehicle use and other incidental or consequential damages are excluded, as is axle damage caused by the failure of a non-Yukon component. Yukon also sells an optional Yukon Extended Service (Y.E.S.) plan that upgrades select products to lifetime coverage; it must be purchased within 30 days of ordering the Yukon product. This warranty gives you specific legal rights, and you may have other rights that vary from state to state.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Yukon Gear & Axle. Contact us if you need help with a warranty claim.

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