Details

MFG. Part #:

91010233

Quality replacement rear main seal for S/B Chevy 400 V-8.

This product is discontinued.
Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Some parts are not legal for use in California or other states with similar laws/regulations

Reviews

Write a Review

Videos & Articles

How to Properly Set Chain Tension - Tech Talk

Learn about the importance of getting the chain tension set correctly, and why it is critical that we get it as near perfect as we can. Walkthrough a basic procedure that effectively and consistently gets the chain tension set properly every time.
A Guide to Installing Adjustable LS Motor Mounts

Follow this step by step guide on how to install adjustable LS motor mounts to set your engine location exactly where you want it.
Finned Valve Cover Installation Guide - 1967 Chevelle

Follow along as Jeff installs Mr. Gasket aluminum finned valve covers and gaskets to his iron-head engine. Learn how to prep the covers for a fresh coat of engine paint!
How to Check Piston to Valve Clearance

A guide on how to check piston to valve clearance to prevent interference. See what tools are used to make this process easier.

Rebuilding Junkyard SBC Vortec Cylinder Heads

Learn how to re-build a junkyard Small Block Chevy. A step-by-step guide on how to select a SBC, machine the valve guide bosses down, and what parts to use to upgrade to your personal liking.
Disassembling Valvetrain Components

Rebuilding an engine? Stay organized by using a valvetrain rocker arm organizer tray while disassembling the valvetrain components. Learn some tips on why you shouldn't mix up lifters if you intend on using them again.
Engine Building Tool Guide

Professional insight on some useful crate engine tools that will improve your engine building experience.