Dorman 635-786 Engine Rear Main Seal Cover
Rear Main Seal Cover for GM V8 Applications
Dorman 635-786 is a direct replacement engine rear main seal cover built to match the fit and function of the original equipment part. It is made from steel with a metallic gray finish and is engineered for a precise repair on a wide range of GM trucks, SUVs, and performance vehicles.
Compatible With 2014-2025 Chevrolet Silverado 1500, 2014-2025 GMC Sierra 1500, and 2015-2025 Cadillac Escalade applications where the rear main seal cover is required. The Dorman 635-786 also serves other listed Chevrolet, GMC, and Cadillac models across the 2014-2025 range.
- Steel construction for engine sealing service
- Metallic gray finish
- Standard replacement grade
- 14 mounting holes for OE-style attachment
- 2.075 in. inside diameter
- Direct replacement for original equipment fit and function
Detailed Product Overview
This engine rear main seal cover is designed for repair work where the original cover has worn, leaked, or been damaged during service. Dorman 635-786 follows precise design standards and has undergone extensive testing to support proper fit on the engine block. It is a practical replacement for applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, as well as other listed GM platforms including Tahoe, Yukon, Express, Savana, Corvette, Camaro, and select Silverado and Sierra variants. This part cross-references GM OE numbers 12617790 and 12665077 for the same application.
Common Repair Uses
- Rear main seal cover leakage at the engine block
- Damage to the original cover during engine service
- Improper sealing at the rear main seal area
- Fitment issues caused by a worn or distorted OE cover
- Restoration work on GM truck, SUV, and performance engines
Installation Notes and Tips
Verify engine application, mounting-hole layout, and inside diameter before installation. Clean the sealing surfaces thoroughly and inspect the rear main seal area for wear or contamination before fitting the new cover. Use the correct service procedure and torque sequence for the specific vehicle and engine combination. This part includes the cover and bolts as listed in the product data.
Quality Assurance
Dorman manufactures this part as a standard replacement component and subjects it to extensive testing to help ensure it meets precise design requirements for reliable engine repair.
Dorman 635-786 Engine Rear Main Seal Cover
Rear Main Seal Cover for GM V8 Applications
Dorman 635-786 is a direct replacement engine rear main seal cover built to match the fit and function of the original equipment part. It is made from steel with a metallic gray finish and is engineered for a precise repair on a wide range of GM trucks, SUVs, and performance vehicles.
Compatible With 2014-2025 Chevrolet Silverado 1500, 2014-2025 GMC Sierra 1500, and 2015-2025 Cadillac Escalade applications where the rear main seal cover is required. The Dorman 635-786 also serves other listed Chevrolet, GMC, and Cadillac models across the 2014-2025 range.
- Steel construction for engine sealing service
- Metallic gray finish
- Standard replacement grade
- 14 mounting holes for OE-style attachment
- 2.075 in. inside diameter
- Direct replacement for original equipment fit and function
Detailed Product Overview
This engine rear main seal cover is designed for repair work where the original cover has worn, leaked, or been damaged during service. Dorman 635-786 follows precise design standards and has undergone extensive testing to support proper fit on the engine block. It is a practical replacement for applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, as well as other listed GM platforms including Tahoe, Yukon, Express, Savana, Corvette, Camaro, and select Silverado and Sierra variants. This part cross-references GM OE numbers 12617790 and 12665077 for the same application.
Common Repair Uses
- Rear main seal cover leakage at the engine block
- Damage to the original cover during engine service
- Improper sealing at the rear main seal area
- Fitment issues caused by a worn or distorted OE cover
- Restoration work on GM truck, SUV, and performance engines
Installation Notes and Tips
Verify engine application, mounting-hole layout, and inside diameter before installation. Clean the sealing surfaces thoroughly and inspect the rear main seal area for wear or contamination before fitting the new cover. Use the correct service procedure and torque sequence for the specific vehicle and engine combination. This part includes the cover and bolts as listed in the product data.
Quality Assurance
Dorman manufactures this part as a standard replacement component and subjects it to extensive testing to help ensure it meets precise design requirements for reliable engine repair.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Rear Main Seal Cover for GM V8 Applications
Dorman 635-786 is a direct replacement engine rear main seal cover built to match the fit and function of the original equipment part. It is made from steel with a metallic gray finish and is engineered for a precise repair on a wide range of GM trucks, SUVs, and performance vehicles.
Compatible With 2014-2025 Chevrolet Silverado 1500, 2014-2025 GMC Sierra 1500, and 2015-2025 Cadillac Escalade applications where the rear main seal cover is required. The Dorman 635-786 also serves other listed Chevrolet, GMC, and Cadillac models across the 2014-2025 range.
- Steel construction for engine sealing service
- Metallic gray finish
- Standard replacement grade
- 14 mounting holes for OE-style attachment
- 2.075 in. inside diameter
- Direct replacement for original equipment fit and function
Detailed Product Overview
This engine rear main seal cover is designed for repair work where the original cover has worn, leaked, or been damaged during service. Dorman 635-786 follows precise design standards and has undergone extensive testing to support proper fit on the engine block. It is a practical replacement for applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, as well as other listed GM platforms including Tahoe, Yukon, Express, Savana, Corvette, Camaro, and select Silverado and Sierra variants. This part cross-references GM OE numbers 12617790 and 12665077 for the same application.
Common Repair Uses
- Rear main seal cover leakage at the engine block
- Damage to the original cover during engine service
- Improper sealing at the rear main seal area
- Fitment issues caused by a worn or distorted OE cover
- Restoration work on GM truck, SUV, and performance engines
Installation Notes and Tips
Verify engine application, mounting-hole layout, and inside diameter before installation. Clean the sealing surfaces thoroughly and inspect the rear main seal area for wear or contamination before fitting the new cover. Use the correct service procedure and torque sequence for the specific vehicle and engine combination. This part includes the cover and bolts as listed in the product data.
Quality Assurance
Dorman manufactures this part as a standard replacement component and subjects it to extensive testing to help ensure it meets precise design requirements for reliable engine repair.
