Yukon YGLM35-4-27 Grizzly Locker for AMC Model 35 27-Spline 3.54 & Up Ratio

Regular price: $689.95
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Product Specification:

SKU:YUKYGLM35-4-27

MPN: YGLM35-4-27

UPC: 883584280163

Weight: 18.8 lb

Inventory: 10

Type: Differentials

Vehicle Fitment

American Motors Hornet (1970-1977), Concord (1978-1983), Eagle (1980-1988), AMX (1968-1970), Javelin (1968-1974), Pacer (1975-1980)
Jeep Cherokee (1984-2001), Grand Cherokee (1993-2004), Grand Wagoneer (1993), Wrangler YJ/TJ (1987-2006), Comanche (1986-1992), Liberty (2002-2003)

Fitment Notes

Fits the AMC Model 35 rear axle (also known as the Dana 35) with 27-spline axles specifically; confirm your axle spline count before ordering, since other Model 35/Dana 35 applications used different spline counts
Designed for 3.54 and numerically higher gear ratios only - not compatible with carriers set up for lower (numerically lower) ratios
This is a mechanical locking differential, not an open or limited-slip unit - it provides 100% power to both wheels under load, with automatic disengagement while cornering

Features

Mechanical positive-locking differential built for street, off-road, and drag use
Forged 8620 alloy case and internals for durability
Patented clutch tooth design with a larger tooth base radius, offering up to 350% greater strength than back-cut competitor designs
Resists breakage from shock-loading or axle failure
Double-drilled for both 3/8" and 7/16" ring gear bolt patterns
Assembled in the USA
Backed by a 1-year warranty against manufacturer defects (lifetime coverage available for an additional fee)

Specifications

Differential: AMC Model 35 (Dana 35) rear
Axle spline count: 27
Gear ratio compatibility: 3.54 and up
Carrier material: 8620 alloy
Ring gear bolt pattern: Double-drilled, 3/8" and 7/16"
Warranty: 1 year against manufacturer defects

Included Components

1x Grizzly locker unit

Product Description

The Yukon YGLM35-4-27 Grizzly Locker is a mechanical locking differential for the AMC Model 35 (Dana 35) rear axle with 27-spline axles, found in a range of classic American Motors cars and Jeep SUVs from the late 1960s through the mid-2000s. Unlike an open differential, which can send all power to a single spinning wheel when traction is lost, the Grizzly Locker provides 100% power to both wheels under drive, delivering serious traction improvements for off-road use while still allowing wheels to disengage and turn independently in corners.

Built with a forged 8620 alloy case and Yukon's patented clutch tooth design - featuring a larger tooth base radius that resists breakage far better than competing back-cut designs - this locker is engineered to hold up under the shock-loading common in rock crawling, trail running, and off-road racing. It's compatible with 3.54 and numerically higher gear ratios, so confirming your carrier's ratio range before ordering is an important step.

Installation requires removing the differential cover and the factory carrier to install the locker in its place, along with proper backlash and preload setup. This is a moderate-to-advanced job typically handled by an experienced DIY off-roader or a differential shop, and a common upgrade alongside a gear ratio change or broader axle rebuild.