HomeEngine > Cylinder Block ComponentsDorman 635-118 Engine Rear Main Seal Cover
Part #: 635-118

Dorman 635-118 Engine Rear Main Seal Cover

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⚙️ 28 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, E-350 Super Duty, F-250 Super Duty, F-350 Super Duty, E-350 Club Wagon, and Excursion
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Overview of Dorman Engine Rear Main Seal Cover

The Dorman 635-118 Engine Rear Main Seal Cover is designed for reliable sealing and durability in Ford heavy-duty vehicles. Crafted from aluminum, this rear main seal cover ensures a precise fit and long-lasting performance for models like the Ford E-350 Club Wagon and F-350 Super Duty.

  • Constructed from durable aluminum material for strength and corrosion resistance
  • Inside diameter of 5.74 inches for accurate sealing
  • Dimensions: 19 inches in length and 20.25 inches in width for proper fitment
  • Includes rear main seal retainer, rear main seal, and gasket for complete installation
  • Compatible with Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty models

Detailed Product Description

The Dorman 635-118 rear main seal cover is engineered to maintain engine integrity by preventing oil leaks at the rear of the crankshaft. Its aluminum construction offers enhanced durability and resistance to wear compared to standard materials. The included rear main seal and gasket provide a comprehensive solution, reducing the need for additional parts during installation. With precise inside diameter and overall dimensions, this seal cover fits securely on Ford heavy-duty trucks and vans, including the E-350 Club Wagon and F-250 Super Duty.

Common Applications and Problem Solving

  • Prevents oil leaks from the rear main seal area
  • Addresses engine oil contamination and loss issues
  • Eliminates crankshaft seal wear and damage
  • Helps maintain engine oil pressure and performance
  • Reduces risk of engine damage due to oil leakage

Installation Notes and Tips

Ensure the engine surface is clean and free of debris before installation. Use the included gasket and seal retainer to secure the rear main seal cover properly. Verify the inside diameter matches the crankshaft specifications to avoid leaks. It is recommended to inspect the crankshaft for wear or damage during replacement. Proper torque specifications should be followed to prevent warping or seal failure.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for Ford heavy-duty vehicles. The 635-118 rear main seal cover undergoes rigorous quality control to ensure fit and function. Warranty coverage details are available through Dorman and typically include protection against defects in material and workmanship.

BrandDorman
Part Number635-118
Inside Diameter (in)5.74 in
Length (In)19 in
MaterialAluminum
Package ContentsRear Main Seal Retainer; Rear Main Seal and Gasket
Width (in)20.25 in

This part fits 28 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2010FordE-350 Super Duty6.0LV8N/A
2010FordF-250 Super DutyAutomatic6.4LV8N/A
2010FordF-350 Super DutyAutomatic6.4LV8N/A
2009FordE-350 Super Duty6.0LV8N/A
2009FordF-250 Super DutyAutomatic6.4LV8N/A
2009FordF-350 Super DutyAutomatic6.4LV8N/A
2008FordE-350 Super Duty6.0LV8N/A
2008FordF-250 Super DutyAutomatic6.4LV8N/A
2008FordF-350 Super DutyAutomatic6.4LV8N/A
2007FordE-350 Super Duty6.0LV8N/A
2007FordF-250 Super DutyAutomatic6.0LV8N/A
2007FordF-350 Super DutyAutomatic6.0LV8N/A
2006FordE-350 Super Duty6.0LV8N/A
2006FordF-250 Super DutyAutomatic6.0LV8N/A
2006FordF-350 Super DutyAutomatic6.0LV8N/A
2005FordE-350 Club Wagon6.0LV8N/A
2005FordE-350 Super Duty6.0LV8N/A
2005FordExcursion6.0LV8N/A
2005FordF-250 Super DutyAutomatic6.0LV8N/A
2005FordF-350 Super DutyAutomatic6.0LV8N/A
2004FordE-350 Club Wagon6.0LV8N/A
2004FordE-350 Super Duty6.0LV8N/A
2004FordExcursion6.0LV8N/A
2004FordF-250 Super DutyAutomatic6.0LV8N/A
2004FordF-350 Super DutyAutomatic6.0LV8N/A
2003FordExcursionN/A
2003FordF-250 Super DutyAutomaticN/A
2003FordF-350 Super DutyAutomaticN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

3C3Z6G091A

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.