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  • Yukon Gear Master Overhaul Kit For 99-08 GM 8.6in Diff
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Yukon Gear Master Overhaul Kit For 99-08 GM 8.6in Diff

Yukon Gear & Axle
YUKYK GM8.6-A
In stock
Differential Overhaul Kits
$340.89
The GM 8.6 Master Overhaul Kit from Yukon Gear is the ultimate solution for truck and...
$340.89
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Yukon Gear Master Overhaul Kit For 09+ GM 8.6in Diff
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Yukon Gear Master Overhaul Kit For 99-08 GM 8.6in Diff
Description

The GM 8.6 Master Overhaul Kit from Yukon Gear is the ultimate solution for truck and SUV owners who need a complete rebuild for their rear differential. Designed for 1999–2008 GM 8.6" models, this kit includes premium components to restore performance, reliability, and confidence in your drivetrain.

Built with Gen 1 bearings, triple‑lip seals, and precision shims, Yukon’s overhaul kit ensures proper fitment and long‑lasting durability. Whether you’re towing, hauling, or daily driving, this kit provides the strength and dependability you need.

With Yukon’s reputation for precision engineering and dependable performance, the GM 8.6 Master Overhaul Kit is the trusted choice for enthusiasts and professionals alike.


Features and Benefits

  • Complete Overhaul Solution – Includes everything needed to rebuild your GM 8.6" differential.

  • Premium Gen 1 Bearings – Ensures durability and long‑lasting performance.

  • Triple Lip Seal Design – Provides superior protection against leaks.

  • 1999–2008 Compatibility – Designed specifically for GM 8.6" rear differentials.

  • Performance Grade – Built for strength and reliability under demanding conditions.

  • Precision Fitment – Gasket mount with 10 holes for exact installation.


Built for Reliability

With the GM 8.6 Master Overhaul Kit, you’ll restore confidence in your vehicle’s drivetrain. Whether it’s heavy‑duty towing or daily commuting, Yukon Gear ensures dependable performance every time.


Specifications

Specification Detail
Part Number yukYK GM8.6-A
Model GM 8.6" Rear Differential
Compatibility 1999–2008 GM Vehicles
Bearing Generation Gen 1
Bearing(s) Included Yes
Bearing Inside Diameter 1.71
Bearing Outside Diameter 2.688
Bearing Max Width 6969
Differential Case Type GM8.6
Gasket Mount Hole Qty 10
Seal Type Triple Lip
Seal Inside Diameter 2.088
Seal Outside Diameter 2.777
Seal Width 0.496
Shaft Diameter 1.626
Spacer Included No
Lock Ring Included No
Retainers Included No
Width 13
Grade Type Performance
California Proposition 65 Yes – Cancer and Reproductive Harm Warning


Installation Instructions
Installation Instructions
Installation Instructions


This Part Fits:

 

Year Make Model Submodel
2004-2007 Buick Rainier CXL
2004-2005 Buick Rainier CXL Plus
1999-2000,2002-2008 Cadillac Escalade Base
2008 Cadillac Escalade Platinum
2007-2008 Chevrolet Avalanche LS
2007-2008 Chevrolet Avalanche LT
2007-2008 Chevrolet Avalanche LTZ
2002-2005 Chevrolet Avalanche 1500 Base
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2002-2006 Chevrolet Avalanche 1500 Z71
1999 Chevrolet C1500 LS
1999 Chevrolet C1500 Suburban Base
1999 Chevrolet C1500 Suburban LS
1999 Chevrolet C1500 Suburban LT
1999-2000 Chevrolet C2500 Base
1999-2000 Chevrolet C2500 LS
2004 Chevrolet Colorado Base
2004,2006-2008 Chevrolet Colorado LS
2006-2008 Chevrolet Colorado LT
2004-2005 Chevrolet Colorado Sport
2004-2005 Chevrolet Colorado Sport LS
2006-2008 Chevrolet Colorado WT
2004-2005 Chevrolet Colorado Z71
2004-2005 Chevrolet Colorado Z71 LS
2004-2005 Chevrolet Colorado Z85
2004-2005 Chevrolet Colorado Z85 LS
2003-2008 Chevrolet Express 1500 Base
2003-2008 Chevrolet Express 1500 LS
2006-2008 Chevrolet Express 1500 LT
1999 Chevrolet K1500 LS
1999 Chevrolet K1500 Suburban Base
1999 Chevrolet K1500 Suburban LS
1999 Chevrolet K1500 Suburban LT
1999-2003 Chevrolet S10 Base
1999-2004 Chevrolet S10 LS
1999-2003 Chevrolet S10 Xtreme
1999-2003 Chevrolet S10 ZR2
2002-2004 Chevrolet S10 ZR5
1999-2005 Chevrolet Silverado 1500 Base
2004-2006 Chevrolet Silverado 1500 Hybrid
1999-2008 Chevrolet Silverado 1500 LS
1999-2008 Chevrolet Silverado 1500 LT
2007-2008 Chevrolet Silverado 1500 LTZ
2005-2006 Chevrolet Silverado 1500 SS
2002-2008 Chevrolet Silverado 1500 WT
2004-2005 Chevrolet Silverado 1500 Z71 Off-Road
2003-2006 Chevrolet SSR Base
2000-2001,2006 Chevrolet Suburban 1500 Base
2000-2008 Chevrolet Suburban 1500 LS
2000-2008 Chevrolet Suburban 1500 LT
2007-2008 Chevrolet Suburban 1500 LTZ
2002-2006 Chevrolet Suburban 1500 Z71
1999-2001,2006 Chevrolet Tahoe Base
2008 Chevrolet Tahoe Hybrid
2000 Chevrolet Tahoe Limited
1999-2008 Chevrolet Tahoe LS
1999-2008 Chevrolet Tahoe LT
2007-2008 Chevrolet Tahoe LTZ
2007-2008 Chevrolet Tahoe PPV
2000,2002-2006 Chevrolet Tahoe Z71
2008 Chevrolet Trailblazer Base
2002-2007 Chevrolet Trailblazer LS
2002-2008 Chevrolet Trailblazer LT
2002-2003 Chevrolet Trailblazer LTZ
2002-2004 Chevrolet Trailblazer North Face
2006-2008 Chevrolet Trailblazer SS
1999 GMC C1500 Sierra SL
1999 GMC C1500 Sierra SLE
1999 GMC C1500 Sierra SLT
1999 GMC C1500 Suburban Base
1999 GMC C1500 Suburban SLE
1999 GMC C1500 Suburban SLT
1999-2000 GMC C2500 Sierra SL
1999-2000 GMC C2500 Sierra SLE
1999-2000 GMC C2500 Sierra SLT
2004,2006-2008 GMC Canyon SL
2004,2006-2008 GMC Canyon SLE
2006-2008 GMC Canyon SLT
2006-2008 GMC Canyon WT
2004-2005 GMC Canyon Z71 Fleet
2004-2005 GMC Canyon Z71 SL
2004-2005 GMC Canyon Z71 SLE
2004-2005 GMC Canyon Z85 SL
2004-2005 GMC Canyon Z85 SLE
2005-2008 GMC Envoy Denali
2002-2008 GMC Envoy SLE
2002-2008 GMC Envoy SLT
1999 GMC K1500 Sierra SL
1999 GMC K1500 Sierra SLE
1999 GMC K1500 Sierra SLT
1999 GMC K1500 Suburban Base
1999 GMC K1500 Suburban SLE
1999 GMC K1500 Suburban SLT
1999-2008 GMC Savana 1500 Base
2006-2008 GMC Savana 1500 LS
2006-2008 GMC Savana 1500 LT
1999-2000,2003-2005 GMC Savana 1500 SLE
2001-2002 GMC Savana 1500 SLT
2002-2005 GMC Sierra 1500 Base
2007-2008 GMC Sierra 1500 Denali
2002 GMC Sierra 1500 HT
2005-2006 GMC Sierra 1500 Hybrid
1999-2003,2006-2008 GMC Sierra 1500 SL
1999-2008 GMC Sierra 1500 SLE
1999-2008 GMC Sierra 1500 SLT
2002-2008 GMC Sierra 1500 WT
1999-2004 GMC Sonoma SL
1999-2001 GMC Sonoma SLE
1999-2004 GMC Sonoma SLS
1999-2000,2008 GMC Yukon Denali
2008 GMC Yukon Hybrid
2006 GMC Yukon SL
1999-2008 GMC Yukon SLE
1999-2008 GMC Yukon SLT
2008 GMC Yukon XL 1500 Denali
2006 GMC Yukon XL 1500 SL
2000-2008 GMC Yukon XL 1500 SLE
2000-2008 GMC Yukon XL 1500 SLT
2008 Hummer H3 Adventure
2008 Hummer H3 Alpha
2006-2008 Hummer H3 Base
2008 Hummer H3 Luxury
2007-2008 Hummer H3 X
2003,2006 Isuzu Ascender Base
2003-2005 Isuzu Ascender Limited
2003-2006 Isuzu Ascender LS
2004-2005,2007-2008 Isuzu Ascender S
2006-2008 Saab 9-7x 4.2i
2006-2008 Saab 9-7x 5.3i
2008 Saab 9-7x Aero
2005 Saab 9-7x Arc
2005 Saab 9-7x Linear

REVIEWS

T.M.

Rebuilt my 2005 Silverado with this Yukon GM 8.6 kit. Bearings and seals fit perfectly, install was smooth, and the truck runs like new again. Excellent quality!

Tom M.

Houston, TX

★★★★★
S.R.

I used the Yukon GM 8.6 overhaul kit on my ’07 Tahoe. Everything was included, fit was spot‑on, and the differential runs quiet now. Highly recommend!

Sam R.

Boise, ID

★★★★★
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Effective Date: October 2024
We offer a 30-day return policy, allowing you to request a return within 30 days of receiving your item. To qualify for a return, the item must be in its original condition—unused, with tags, and in its original packaging. A receipt or proof of purchase is also required.

To initiate a return, please contact us at info@riotparts.com. Returns must be shipped to the address provided upon request. If your return is approved, we will issue a return shipping label along with detailed instructions.

Important
Returns sent without prior authorization will not be accepted.

For any return-related inquiries, please reach out to us at info@riotparts.com.

Return Shipping Address
The return shipping address will be determined based on the requestor’s location to ensure the nearest return facility is used.

Possible return locations include:
• 10880 Lear Blvd.
Reno, NV 89506, United States
• 931 W. Bardin Rd., Suite 150–200
Arlington, TX 76017, United States
• 3035 Campus Dr.
Hatfield, PA 19440, United States
• 5789 N. Graham Road, Ste 200
Whiteland, IN 46184, United States
• 2020 NE Aloclek Dr 4711 N Lamon Ave
#118 STE 12, Hillsboro, OR 97124, United States

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We recommend inspecting your order upon receipt. If you find that an item is defective, damaged, or if you received the wrong item, please contact us immediately so we can address the issue.

Exceptions / Non-Returnable Items
Certain items cannot be returned, including:
• Electrical parts that have been installed or used
• Special order parts that were custom ordered for you
• Items that have been damaged due to improper installation or use

If you have questions or concerns about a specific item, please contact us for assistance.

Exchanges
For exchanges, the quickest option is to return the item you have. Once the return is accepted, you can make a separate purchase for the new item.

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If more than 15 business days have passed since your return was approved and you haven’t received your refund, please contact us at info@riotparts.com.

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