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Vehicle Info NeededACDELCOPART NUMBER: 065-12705663
Rear Main Seal Housing
$9899
Ships on 10/20/2026
Lowest Price GuaranteeRear Main Seal HousingMaterial: Aluminum Length: 15.12 in. Width: 11.25 in. Height: 2.88 in. Gasket Or Seal Included: Yes Inside Diameter (in): 4.53 in. Seal Type: Oil Seal Sold Individually
ACDelco 12705663 Rear Main Seal Housing is designed as an application-specific service replacement that supports proper fit, function, and system integration. Supports dependable engine sealing, airflow, lubrication, valvetrain, or rotating-assembly operation as applicable. Verify vehicle fitment and system configuration before installation.
ACDelco 12705663 Features:
- Application-specific design helps maintain correct fit and function during engine service
- Service sealing component for compatible vehicle repair
ACDelco 12705663 Notes:
- Verify vehicle application, position, and system configuration before installation.
Part TypeRear Main Seal Housing
BrandACDELCO
Package Height2.88
Package Width11.25
Package Length15.12
Weight3.065 PG
Part CategoryReplacement Parts
Product TypeRear Main Seal Housing
Mounting Hole Diameter (In)0.4
Inside Diameter (In)4.53
Mounting Hole Diameter (Mm)10.24
Seal TypeOil Seal
Gasket Or Seal IncludedYes
Mounting Hole Quantity12
Thickness (In)0.42
MaterialAluminum
Thickness (Mm)10.6
Outside Diameter (Mm)131.58
Outside Diameter (In)5.18
Features & Benefits - Bullet 2GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Inside Diameter (Mm)114.95
Features & Benefits - Bullet 3GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features & Benefits - Bullet 4GM regularly updates production and service part designs to integrate new materials and technologies
Part FitmentDirect Fit
Product DescriptionGM Genuine Parts Engine Crankshaft Seal Housings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Weight (Lb)2.57
Grade TypeOE
Features &#38; Benefits - Bullet 1Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Vendor Part Number12705663
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
