Eaton GM 8.875 Inch 12 Bolt Truck 3.73 Up Automatic Locker
Eaton GM 8.875 Inch 12 Bolt Truck 3.73 Up Automatic Locker
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Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
Read the full return policyReturn details & how to start
Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
Specifications
Product details shared across all variants.
- Product type
- Differential
- Category
- Differentials
- Item condition
- New
- Shipping dimensions (L × W × H)
- Shipping weight
- 22.0 lb
Billable shipping weight; may include dimensional weight.
SPECIFICATIONS
- DIFFERENTIAL TYPE: Locking
- GEAR SPLINE TOOTH COUNT: 30 EA
- RING GEAR SIZE: 8.875 IN
- AXLE SHAFT DIAMETER: 1.3 IN
- VEHICLE USAGE:
Off-Road: Rock Crawl
On Road: Drag Racing
Off-Road: Extreme Off-Road
Off-Road: Work Truck / Towing
On Road: Street and Muscle
On Road: Restoration
Off-Road: Light Trail / Sand Sports
On Road: Circle Track
On Road: Work Truck / Towing
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1969 - 1974 | Chevrolet | Blazer | Base |
| 1978 - 1980 | Chevrolet | C10 | Big Ten |
| 1975 - 1981 | Chevrolet | C10 | Cheyenne |
| 1975 - 1980 | Chevrolet | C10 | Custom Deluxe |
| 1975 - 1982 | Chevrolet | C10 | Custom, Scottsdale, Silverado |
| 1981 | Chevrolet | C10 | Deluxe |
| 1965 - 1967 | Chevrolet | C10 Panel | Base |
| 1964 - 1974 | Chevrolet | C10 Pickup | Base |
| 1967 - 1974 | Chevrolet | C10 Suburban | Base |
| 1981 - 1982 | Chevrolet | C10 Suburban | Custom |
| 1975 - 1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1975 - 1982 | Chevrolet | C10 Suburban | Scottsdale, Silverado |
| 1981 | Chevrolet | G10 | Bonaventure |
| 1975 - 1981 | Chevrolet | G10 | Chevy Van, Beauville, Sportvan |
| 1964 - 1974 | Chevrolet | G10 Van | Base |
| 1968 - 1974 | Chevrolet | G10 Van | Sportvan |
| 1975 - 1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe, Custom |
| 1975 - 1981 | Chevrolet | K10 | Scottsdale, Silverado, Cheyenne |
| 1964 - 1974 | Chevrolet | K10 Pickup | Base |
| 1967 - 1974 | Chevrolet | K10 Suburban | Base |
| 1981 - 1982 | Chevrolet | K10 Suburban | Custom |
| 1975 - 1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1975 - 1982 | Chevrolet | K10 Suburban | Silverado, Scottsdale |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1975 - 1980 | Chevrolet | K5 Blazer | Custom Deluxe, Cheyenne |
| 1981 | Chevrolet | K5 Blazer | Custom, Deluxe |
| 1978 - 1981 | Chevrolet | K5 Blazer | Silverado |
| 1965 - 1966 | Chevrolet | Suburban | Base |
| 1977 - 1978 | GMC | C15 | Heavy Half |
| 1977 | GMC | C15 | Indy Hauler |
| 1975 - 1978 | GMC | C15 | Sierra Grande, Base, Sierra Classic, High Sierra |
| 1978 | GMC | C15 | Street Coupe |
| 1975 - 1978 | GMC | C15 Suburban | Base, High Sierra, Sierra Grande, Sierra Classic |
| 1967 - 1974 | GMC | C15/C1500 Pickup | Base |
| 1967 - 1974 | GMC | C15/C1500 Suburban | Base |
| 1979 - 1980 | GMC | C1500 | Heavy Half |
| 1979 - 1982 | GMC | C1500 | Sierra Grande, Street Coupe, Sierra Classic, High Sierra, Base |
| 1979 - 1981 | GMC | C1500 Suburban | Sierra Grande, Base, Sierra Classic, High Sierra |
| 1967 | GMC | C25/C2500 Suburban | Base |
| 1975 - 1978 | GMC | G15 | Rally, Rally STX, Vandura |
| 1967 - 1971 | GMC | G15/G1500 Van | Base |
| 1968 - 1974 | GMC | G15/G1500 Van | Rally, Vandura |
| 1979 - 1981 | GMC | G1500 | Rally STX, Rally, Vandura |
| 1970 - 1981 | GMC | Jimmy | Base |
| 1975 - 1981 | GMC | Jimmy | Sierra Grande, Sierra Classic, High Sierra |
| 1978 - 1981 | GMC | Jimmy | Street Coupe |
| 1975 - 1978 | GMC | K15 | Base, Sierra Classic, High Sierra, Sierra Grande |
| 1977 | GMC | K15 | Indy Hauler |
| 1975 - 1978 | GMC | K15 Suburban | High Sierra, Sierra Grande, Base, Sierra Classic |
| 1966 - 1974 | GMC | K15/K1500 Pickup | Base |
| 1967 - 1974 | GMC | K15/K1500 Suburban | Base |
| 1979 - 1982 | GMC | K1500 | Sierra Grande, High Sierra, Base, Sierra Classic |
| 1979 - 1982 | GMC | K1500 Suburban | Base, High Sierra, Sierra Classic, Sierra Grande |
