SKU: 87991564406

GM 8.5 Inches & 8.6 Inches Ring Gear Differential Cover HRCGM85BK for Chevrolet 1500 2WD 4WD

Sale price$71.95 Regular price$79.95
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Description

GM 8.5 Inches & 8.6 Inches Ring Gear Differential Cover HRCGM85BK for Chevrolet 1500 2WD 4WDPart Number: HRCGM85BKSpecification: Bolt Pattern: 10 BoltMaterial: High Grade Die Cast AluminumLarge Vertical Fins (Great for heat dissipation)Kit Includes Gasket and Mounting HardwareMachined Gasket Flange for a Perfect SealWill NOT work for 2007 and newer 8. 6" differentials that require a fill in hole in the cover, these require M8x1. 25 Metric boltsThe Stabilizer bar and sway bar may interfere and not clear on some of the models below Especially

Part Number:

HRCGM85BK

Specification:

Bolt Pattern: 10 BoltMaterial: High Grade Die Cast AluminumLarge Vertical Fins (Great for heat dissipation)Kit Includes Gasket and Mounting HardwareMachined Gasket Flange for a Perfect SealWill NOT work for 2007 and newer 8.6" differentials that require a fill in hole in the cover, these require M8x1.25 Metric boltsThe Stabilizer bar and sway bar may interfere and not clear on some of the models below… Especially 2005 Chevy Tahoe.This cover will usually not fit front truck differentialsNo fill in hole in cover

Application:

Fit for Following Models:Chevy / GM Intermediates (all A-B-C-G-K-0 Axles), 1964-1995
Chevy / GMC 1/2 Ton 2WD / 4WD Rear ( Will Not Fit 64-70 Trucks with Leaf Springs), 1964-1987
Chevy/GMC 1500 2WD and 4WD 1/2 ton trucks (rear), 1988-20022WD and 4WD Blazers and Jimmys (rear), 1988-1992
2WD and 4WD Suburbans 1/2 ton (rear), 1988-1999
2WD and 4WD Tahoes and Yukons (rear), 1994-1999
Sierra 1500 1/2 Ton 2WD / 4WD with 8.5 R.G Rear, 1999
Silverado 1500 1/2 Ton 2WD / 4WD with 8.5 R.G Rear, 1988-1999
Camaro Z28 and Iroc with 8.5" ring gear, 1982-1992
Camaro V8 (will not fit heavy duty), 1993-2002
Buick Grand Nationals, 1984-1987
Firebirds with V8 engines, 1993-2002
Monte Carlo SS, 1983-1987
Olds 442 with 8.5" ring gear, 1983-1987
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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SKU: 87991564406

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4.6 ★★★★★
Based on 9 reviews
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E
Verified Purchase
Eric D
Phoenix, US
★★★★★ 5
good product
Size: 16 AWG-100 ft
good product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
Z
Verified Purchase
Zander kagley
Omaha, US
★★★★★ 5
Good product at a great price
Size: 16 AWG-100 ft
Used to wire my door speakers and it worked amazing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
C
Verified Purchase
Charles Darwin
Omaha, US
★★★★★ 5
Perfect for your Alpha
This kit had every single piece needed for my Alpha water pump - and many I didn't need. I guess it fits basically all the different versions out there. I remember when the single kits cost more and had much less. This is a good high-quality alternative. Stock up on them now - you'll need one eventually.
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Reviewed in the United States on July 28, 2025
A
Verified Purchase
Austin Williams
Houston, US
★★★★★ 5
Great bang for your buck!
Swapped out my old impeller and this helped fix my overheating issue. Super high quality, fit like a glove. If you know what you’re doing it’ll take you an hour tops. Super solid for the price! Fit into my 1990 alpha one gen 1 outdrive on my 4.3 Mercruiser.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
J
Verified Purchase
Jesse Simpson
Dallas, US
★★★★★ 4
Decent Kit
It's a pretty decent kit. Comes with all the lower unit options whether yours needs that particular part or not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025

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