My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Mr. Gasket 1971 Rear Main Seal Viton High Vacuum

(GMC G2500 1979-85, K1500 1979-85, C1500 1979-85, K2500 1979-85, Jimmy 1970-85, C3500 1979-85, K2500 Suburban 1979-85, K3500 1979-85 + 129 more models)

Part of: Mr. Gasket Rear Main Seal Gaskets

Other options in this family: Mr. Gasket 29 Mr. Gasket 30 Mr. Gasket 1968 Mr. Gasket 1963 Mr. Gasket 1960

Manufacturer

Picture for manufacturer Mr. Gasket

Part Number

1971
14 reviews
Sale Price

$37.95

In Stock (10+)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Mr. Gasket 1971 Rear Main Seal is a high-performance solution designed to repair leaking rear main seals in classic and performance engines. Constructed from premium Viton® material, this seal offers superior resistance to high temperatures, oil degradation, and harsh engine conditions compared to traditional rope seals or standard rubber seals.

Key Features:

  • Viton® construction for exceptional durability and heat resistance
  • High vacuum rating for reliable sealing performance
  • Direct upgrade replacement for rope seal equipped engines
  • Superior alternative to standard silicone rubber main seals
  • Stops rear main seal oil leaks effectively

This rear main seal is ideal for engine rebuilds, restorations, or repair jobs where a reliable, long-lasting seal is critical. The Viton material maintains its sealing properties even under extreme operating conditions, making it an excellent choice for both street and performance applications.

Products specifications

Fits

GMC G2500 1979-85, K1500 1979-85, C1500 1979-85, K2500 1979-85, Jimmy 1970-85, C3500 1979-85, K2500 Suburban 1979-85, K3500 1979-85, C15/C1500 Pickup 1967-74, C2500 1979-85, K1500 Suburban 1979-85, G25/G2500 Van 1967-74 + 125 more models

Engine Make/Size

Chevrolet Small Block Gen I

Prop 65

No

Rear Main Seal Type

Two Piece

Brand

Mr. Gasket

Category

Engine

Emission Code

5

Engine

Chevrolet Small Block Gen I

Material

Viton

Part Type

Engine Main Bearing Gasket Set

Product Type

Rear Main Seal

Rear Main Seal Style

Two Piece

Sub Category

Gaskets and Sealing Systems

Warning

California Proposition 65

Warranty

Manufacturer's Limited 90 Day Warranty

Weight

0.1

Great prices.

Easy, cheap, reasonable shipping

Great product - prompt service - helpful customer relations - will use them again and recommend them to others

great prices thanks

Fast thats all i gotta say

Ordering went smooth and quickly

quick and easy ordering process

Great choices, quick checkout, great prices compared to competitors

It doesn't get much easier. I liked the PayPal and Amazon check out option. Tracking shipping information was very vague, not having any tracking number or any exact dates around shipping and expected deliver date (other than a window of dates). Overal

Great prices, helpful customer service. Ordered 2 by mistake. And they got it cleared up real fast. Saved over $80 off retail. Will be ordering from the, again!!!!! <br>

The item I ordered shipped the next day. When I have a car on jack stands waiting for something, I can't ask for more.

pleased so far

Dont know yet. Hope item is in stock.

Very good pricing, shipped out next day. Thumbs up!

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy