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Ford Performance 351W Rear Main Oil Seal

Item 406486
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 351W Engine Rear Main Oil Seal
      • Maintains a Leak-Free Crankshaft Area
      • Also Prevents Contaminants From Entering Your Engine
      • Ideal for High-Performance Applications
      • Durable Synthetic Rubber Construction
      • Professional Installation Recommended
      • Sold Individually


      Maintain a Leak-Free Engine. Keep your 351W engine’s crankshaft area leak-free with the Ford Performance 351W Rear Main Oil Seal. This durable main oil seal is designed to take the high temperatures associated with more performance-oriented driving, maintaining a high-integrity seal around the crankshaft area. This seal will outperform most main oil seals on the market, and is the ideal component for your Mustang build project.

      Durable Build Quality. The Ford Performance 351W Rear Main Oil Seal is constructed from a specialized synthetic rubber compound. This main oil seal is highly resistant to degradation, even in a high temperature environment, and in the presence of oil. This oil seal also features a one-piece construction for superior sealing.

      Professional Installation Recommended. The Ford Performance 351W Rear Main Oil Seal installs in preexisting locations in your Mustang. The installation will require expert-level mechanical knowledge and skills, since installation requires lowering of the engine, as well as dismantling of the transmission. You may also need a number of specialized tools and several hours of work. Consequently, professional installation is recommended.

      Application. The Ford Performance 351W Rear Main Oil Seal fits all Ford Mustang models.

      Application Notes. The Ford Performance Rear Main Oil Seal will fit high-performance 351W engines. This main oil seal is also ideal for use on 351 9.2-inch standard and big bore deck, and 9.5-inch standard and big bore deck engine blocks.


      Ford Performance M-6701-B351

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Main Oil Seal

      Customer Reviews (1)

        Reviews of Ford Performance Engine products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions