B&M Racing & Performance brings you this billet aluminum speedometer port block-off plug that fits GM TH350, TH350c, Powerglide, Muncie M-20, and Aisin AY6 transmissions. This plug is used to block the mechanical speedometer gear port when upgrading to an electronic speedometer and includes a replaceable Buna-N-rubber o-ring. It features a black Mil-Spec anodized finish for long-lasting good looks, even in harsh conditions. Comes with hardware and instructions for a quick and easy installation.

Features

Billet Aluminum Construction with Engraved B&M Logo

Protects Your Transmission from Contaminants during use or storage

Replaceable O-ring seal for leak prevention and simple maintenance

Perfect for Electronic Speedometer Conversions

Mil-Spec Black Anodized Finish for long lasting good looks

Includes Stainless Steel Hardware for Superior Corrosion Resistance