Mr. Gasket
Rear Main Seal High Vacuum Fits Chevrolet Small Block with two-piece rear main seal. Recommended for use with external vacuum pump Mr Gasket
SKU: M00S 1971
Description
Part #: 1971
This Mr. Gasket Rear Main Seal is made from Viton Rubber. This style of rubber can handle high temperature like silicone rubber, but with superior abrasion resistance.It's durability and design make it recommended for applications that have high engine vacuum, like racing engines that utilize external vacuum pumps for crankcase evacuation.Repairs That Leaky Rear Main SailVitonandregRubber Offers Both Abrasion Resistance and High Temperature ToleranceUpgrade for Rope Seal Equipped Cars or Silicone Rubber Main SealsDetails:Emission Code: 5Material: VitonRear Main Seal Style: Two PieceWarranty: Manufacturer's Limited 90 Day Warranty
Features:
- Repairs That Leaky Rear Main Sail
- Viton Rubber Offers Both Abrasion Resistance & High Temperature Tolerance
- Upgrade for Rope Seal Equipped Cars or Silicone Rubber Main Seals
Fits Chevrolet Small Block with two-piece rear main seal. Recommended for use with external vacuum pump.
Fitment
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Specifications
| Brand | Mr. Gasket |
| Part Number | M00S 1971 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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