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Complete Overhaul Kit for the GM 8.2-Inch BOP Differential
The USA Standard YUKZK GM8.2BOP is a comprehensive master overhaul kit engineered for the GM 8.2-inch rear differential found in classic Buick, Oldsmobile, and Pontiac muscle cars and personal luxury vehicles. Every component needed to properly rebuild the BOP 10-bolt rear end is bundled under a single part number, including premium Koyo and Timken bearings with matched races, high-quality pinion and axle seals, crush sleeve, pinion nut, shims, and ring gear bolts. Ordering YUKZK GM8.2BOP eliminates piecemeal sourcing and provides a warranty-backed rebuild solution from one supplier.
Key Features
- Complete overhaul kit covering every component needed for a full GM 8.2in BOP differential rebuild
- Premium Koyo and Timken bearings with matched races for OEM-equivalent durability
- High-quality pinion seal and axle seals to prevent oil contamination
- Includes crush sleeve, pinion nut, pinion shims, and ring gear bolts
- Eliminates multi-supplier sourcing for a complete rebuild
- Lifetime limited warranty under the Magnuson-Moss Warranty Act
Specifications
| Specification | Detail |
|---|---|
| Part Number | YUKZK GM8.2BOP |
| Brand | USA Standard / Yukon Gear & Axle |
| Differential Application | GM 8.2in BOP (Buick/Olds/Pontiac) |
| Bearing Brand | Koyo / Timken |
| Pinion Spline | 27-spline |
| Material | High-quality steel and rubber seals |
| Warranty | Lifetime limited |
| UPC | 883584299594 |
Fitment
| Year | Make | Model | Notes |
|---|---|---|---|
| 1964 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1971 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1972 | Buick | Skylark | GM 8.2in BOP 10-bolt rear differential |
| 1964 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Buick | Gran Sport | GM 8.2in BOP 10-bolt rear differential |
| 1964 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1971 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1972 | Buick | Riviera | GM 8.2in BOP 10-bolt rear differential |
| 1964 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1971 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1972 | Oldsmobile | Cutlass | GM 8.2in BOP 10-bolt rear differential |
| 1964 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1971 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1972 | Oldsmobile | 442 | GM 8.2in BOP 10-bolt rear differential |
| 1964 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1971 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1972 | Pontiac | GTO | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Pontiac | Firebird | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Pontiac | Firebird | GM 8.2in BOP 10-bolt rear differential |
| 1969 | Pontiac | Firebird | GM 8.2in BOP 10-bolt rear differential |
| 1970 | Pontiac | Firebird | GM 8.2in BOP 10-bolt rear differential |
| 1971 | Pontiac | Firebird | GM 8.2in BOP 10-bolt rear differential |
| 1972 | Pontiac | Firebird | GM 8.2in BOP 10-bolt rear differential |
| 1964 | Pontiac | Tempest | GM 8.2in BOP 10-bolt rear differential |
| 1965 | Pontiac | Tempest | GM 8.2in BOP 10-bolt rear differential |
| 1966 | Pontiac | Tempest | GM 8.2in BOP 10-bolt rear differential |
| 1967 | Pontiac | Tempest | GM 8.2in BOP 10-bolt rear differential |
| 1968 | Pontiac | Tempest | GM 8.2in BOP 10-bolt rear differential |
What's Included
- Inner and outer pinion bearings (Koyo/Timken) with races
- Carrier bearings with races
- Pinion seal
- Axle seals
- Pinion nut
- Crush sleeve
- Pinion shims
- Ring gear bolts
Frequently Asked Questions
What vehicles use the GM 8.2in BOP differential?
The GM 8.2-inch BOP rear end was used in 1964-1972 Buick Skylark, Gran Sport, and Riviera; 1964-1972 Oldsmobile Cutlass, 442, and Toronado; and 1964-1972 Pontiac GTO, Firebird, and Tempest. Always verify your axle housing ring gear diameter before ordering.
Why are Koyo and Timken bearings specified in this kit?
Both Koyo and Timken are OEM-grade bearing suppliers used by major automakers. Specifying these brands in YUKZK GM8.2BOP ensures the kit meets factory load ratings and dimensional specifications for long-term reliability.
Is the YUKZK GM8.2BOP the same kit for both open and limited-slip differentials?
Yes. The overhaul hardware including bearings, seals, crush sleeve, and pinion nut is the same regardless of carrier type. If you are rebuilding a limited-slip carrier, you will also need the appropriate clutch pack or cone clutch rebuild components, sold separately.
What is the warranty on this kit?
USA Standard backs the YUKZK GM8.2BOP with a Lifetime Limited Warranty. As a drivetrain rebuild component, it qualifies for consumer protections under the Magnuson-Moss Warranty Act.
Do I need a special tool to set pinion preload?
Yes. A pinion preload torque wrench and an inch-pound torque gauge are required to properly set pinion bearing preload. Correct preload is critical for long bearing life and prevents premature gear failure.
How do I identify the GM 8.2in BOP versus the GM 8.5in 10-bolt used in Chevrolet applications?
The BOP and Chevrolet 8.5in housings look similar but are not interchangeable. Measure the ring gear diameter and count the cover bolts. The BOP axle uses different bolt patterns and flange dimensions. Referencing the axle serial number or a factory parts manual for your specific vehicle is the most reliable method.
Should I replace the ring gear bolts from the kit or reuse the originals?
Always replace ring gear bolts when rebuilding. Reusing stretched or torqued-to-yield fasteners risks ring gear loosening under load, which causes catastrophic differential failure.
What gear oil is correct for this differential?
The GM 8.2in BOP uses 80W-90 or 75W-90 GL-5 gear oil. If a limited-slip carrier is present, add the appropriate friction modifier per the carrier manufacturer's recommendation.
Installation Notes
- Verify axle housing type before ordering YUKZK GM8.2BOP by measuring ring gear diameter and confirming BOP versus Chevrolet 8.5in application
- Set pinion bearing preload using a calibrated inch-pound torque wrench per the factory service manual specification
- Check ring and pinion backlash and pattern before final assembly
- Replace all ring gear bolts from the kit and torque to specification; do not reuse old hardware
- Refill with the correct GL-5 gear oil and add friction modifier if a limited-slip carrier is installed
California Prop 65 Warning
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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