Dorman 635-556 Engine Crankshaft Seal Retainer - Front

Engine Crankshaft Seal Retainer for Audi and Volkswagen

Dorman 635-556 is an engine crankshaft seal retainer built to secure the rear main seal on specified Audi and Volkswagen applications. It matches the fit and function of the original retainer on vehicles with a leaking or failed seal retainer caused by seal deterioration.

Compatible With front-position applications on select Audi A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, A7, A7 Quattro, A8 Quattro, Q5, Q7, and Volkswagen Touareg models. This part number, 635-556, is a direct-fit replacement for common OE-style service needs on the rear main seal area.

Key Features

• Engine crankshaft seal retainer for the rear main seal assembly
• Aluminum construction with a natural finish and metallic gray appearance
• Standard replacement grade for OE-style fit and function
• Includes gasket or seal
• Front-position application for listed Audi and Volkswagen vehicles
• Mounting hole quantity: 9
• Mounting hole diameter: 0.25 in.
• Dimensions: 9 in. length, 5.15 in. width, 20 mm depth, 0.24 thickness

Detailed Description

Dorman 635-556 is engineered as a replacement engine crankshaft seal retainer for vehicles where the original rear main seal retainer has leaked or failed. The aluminum body and standard replacement design support proper sealing at the crankshaft area, helping restore the original retention point for the rear main seal. The included gasket or seal supports a complete service repair on the specified front-mounted applications. This part cross-references MAHLE 67947 for the same application.

What It Helps Solve

• Rear main seal leakage at the crankshaft retainer
• Oil seepage from a deteriorated seal-retainer interface
• Damage or failure of the original crankshaft seal retainer
• Service issues caused by worn sealing surfaces
• Repeat leaks after prior seal replacement when the retainer is compromised

Installation Notes and Tips

Verify engine code and front-position fitment before installation. Inspect the sealing surface, crankshaft area, and surrounding components for wear or contamination before assembly. Replace any damaged mating surfaces as needed and follow the vehicle service procedure for torque sequence and seal alignment. Confirm the part number 635-556 against the original retainer before final installation.

Quality Assurance

Dorman manufactures this crankshaft seal retainer as a standard replacement part for specified Audi and Volkswagen applications. It is built to match the fit and function of the original component for service repairs on the listed vehicles.