Silverado 2500 HD differential cover upgrade on a white background
14 Bolt diff cover 8mm bolts on a white background
GM 10.5 14 Bolt nodular iron cover on a white background
GM 14 Bolt heavy duty differential cover hardware on a white background
Silverado 2500 HD differential cover upgrade on a white background
14 Bolt diff cover 8mm bolts on a white background
GM 10.5 14 Bolt nodular iron cover on a white background
GM 14 Bolt heavy duty differential cover hardware on a white background

Yukon GM 14-Bolt Rear Differential Cover – Late Model 8mm Bolt

YUKYHCC-GM14T-M

$242.25
/
Shipping calculated at checkout.

This Yukon GM 14-Bolt nodular iron rear differential cover is for housings using metric 8mm cover bolts found in heavy-duty Chevrolet and GMC trucks, SUVs, tow rigs, and off-road builds. Constructed from thick-wall nodular iron, this cover improves housing rigidity during towing, hauling, high-torque applications, and aggressive off-road use.

Internal oil-flow shaping helps improve lubrication circulation and cooling, while the black powder coat finish and stainless hardware provide long-term durability and corrosion resistance. Designed for heavy-duty use where factory stamped covers are vulnerable to impact damage and deflection.

Included Items:

  • GM 14-Bolt nodular iron differential cover
  • Metric stainless steel cover bolts
  • Stainless accent plate
  • Magnetic drain plug
Specifications 
  • Fits late-model GM 10.5" 14 Bolt rear axles
  • Designed for housings using 8mm metric cover bolts
  • Heavy-duty nodular iron construction
  • Thick-wall casting improves housing rigidity
  • Helps reduce carrier and housing deflection
  • Internal oil-flow shaping aids lubrication circulation
  • Black powder coat finish
  • Includes stainless hardware and magnetic drain plug
  • Bolt-on installation
  • Designed for towing, heavy-duty, and off-road applications
Fitment 

Fits late-model GM 10.5" 14-Bolt rear axle applications using metric 8mm differential cover bolts. Verify axle configuration before ordering.

Make Model Year Range
Chevrolet Avalanche 2007–2013
Chevrolet Avalanche 2500 2002–2006
Chevrolet Silverado 2500 2000–2004
Chevrolet Silverado 2500 HD 2001–2018
Chevrolet Silverado 3500 2001–2007
Chevrolet Silverado 3500 HD 2007–2018
Chevrolet Suburban 2500 2000–2013
Chevrolet Suburban 3500 HD 2016–2019
GMC Sierra 2500 2000–2004
GMC Sierra 2500 HD 2001–2018
GMC Sierra 3500 2001–2007
GMC Sierra 3500 HD 2007–2018
GMC Yukon XL 2500 2000–2013
Tech Insight 

The GM 10.5" 14 Bolt rear axle is one of the most durable factory truck axles ever produced and is commonly used in towing, work trucks, diesel applications, rock crawlers, and heavy off-road builds. As tire size, torque output, and vehicle weight increase, differential housing rigidity becomes more important for maintaining stable ring and pinion alignment.

A heavy nodular iron differential cover helps reinforce the housing while protecting the ring and pinion assembly from impacts that can crack or deform thin factory covers. This added rigidity can also help reduce housing flex during heavy towing and aggressive off-road driving.

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