Yukon YHCC-GM8.5-M Hardcore Nodular Iron Diff Cover GM 8.5/8.6" 8mm Rear Axle

Regular price: $141.95
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Sale price: $141.95

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Product Specification:

SKU:YUKYHCC-GM8.5-M

MPN: YHCC-GM8.5-M

UPC: 883584291145

Weight: 13.6 lb

Inventory: 4

Type: Diff Covers

Vehicle Fitment

1999-2019 Chevrolet Silverado 1500 (Rear, GM 8.6" 10-Bolt, 2WD & 4WD)
2007 Chevrolet Silverado 1500 Classic (Rear, GM 8.6" 10-Bolt)
2019 Chevrolet Silverado 1500 LD (Rear, GM 8.6" 10-Bolt)
1999-2019 Chevrolet Tahoe (Rear, GM 8.6" 10-Bolt, 2WD & 4WD)
1999-2019 Chevrolet Suburban 1500 / 2014-2019 Chevrolet Suburban (Rear, GM 8.6" 10-Bolt)
2002-2006 Chevrolet Avalanche 1500 / 2007-2013 Chevrolet Avalanche (Rear, GM 8.6" 10-Bolt)
2000-2014 Chevrolet Express 1500 (Rear, GM 8.6" 10-Bolt)
1999-2019 GMC Sierra 1500 (Rear, GM 8.6" 10-Bolt, 2WD & 4WD)
2007 GMC Sierra 1500 Classic (Rear, GM 8.6" 10-Bolt)
1999-2019 GMC Yukon / 2000-2014 GMC Yukon XL 1500 / 2015-2019 GMC Yukon XL (Rear, GM 8.6" 10-Bolt)
2000-2014 GMC Savana 1500 (Rear, GM 8.6" 10-Bolt)
1999-2019 Cadillac Escalade (Rear, GM 8.6" 10-Bolt)
2002-2013 Cadillac Escalade EXT (Rear, GM 8.6" 10-Bolt)
2003-2019 Cadillac Escalade ESV (Rear, GM 8.6" 10-Bolt)

Fitment Notes

Fits GM 8.5" and 8.6" 10-bolt rear differentials with metric M8 (8mm) cover bolts - the late-model design used on 1999 and newer applications
Does NOT fit earlier GM 8.5" differentials with 5/16" (SAE) cover bolts (pre-1999) - see YHCC-GM8.5-S for those applications
Fits both standard and reverse-rotation differentials
Gasket not included - use RTV sealant at installation
Made in the USA

Features

Thick-walled nodular iron construction absorbs impacts without cracking - far stronger than stamped steel covers
Increases differential housing rigidity to reduce deflection under high-torque loads
Contoured inner surfaces direct oil flow toward pinion bearings for faster cooling and reduced wear
Durable black powder coat finish for corrosion resistance on and off road
Contrasting stainless-steel accent plate and high-strength stainless cover bolts included
Magnetic drain plug captures metallic debris to protect differential internals
Fill plug included for convenient fluid service
Fits both standard and reverse-rotation GM 8.5"/8.6" differentials

Specifications

Differential Compatibility: GM 8.5" and 8.6" 10-Bolt Rear (late model, metric M8 cover bolt applications)
Cover Bolt Size: Metric M8 (8mm)
Cover Bolt Holes: 10
Material: Nodular iron (ductile iron)
Finish: Black powder coat with stainless-steel accent plate
Drain Plug: Magnetic - included
Fill Plug: Included
Cover Bolts: High-strength stainless steel - included
Gasket: Not included - use RTV sealant
Weight: 12 lbs
Package Dimensions: 15" W x 15" L x 5" H
Country of Origin: USA

Included Components

1x Nodular iron differential cover (black powder coat)
1x Stainless-steel accent plate
10x High-strength stainless M8 cover bolts
1x Magnetic drain plug
1x Fill plug

Product Description

The Yukon YHCC-GM8.5-M is a Hardcore nodular iron differential cover for GM 8.5" and 8.6" 10-bolt rear axles equipped with metric M8 cover bolts - the late-model design found on 1999 through 2019 Chevrolet Silverado 1500, GMC Sierra 1500, Tahoe, Suburban, Yukon, Escalade, and related platforms. Built from thick-walled ductile nodular iron, it withstands rock strikes and trail impacts that crack or dent factory stamped steel covers, while also stiffening the differential housing to reduce deflection under hard acceleration or towing loads.

Inside, the contoured oil passages direct fluid toward the pinion bearings for better lubrication and cooling during sustained use. The magnetic drain plug captures metallic wear particles before they can recirculate through the gear oil. The kit arrives complete with stainless-steel cover bolts, a stainless accent plate, and both drain and fill plugs - everything needed for a bolt-on install. For early GM 8.5" axles with 5/16" SAE cover bolts (pre-1999), use part number YHCC-GM8.5-S instead.