Description
Fits GM TH400 B&M Racing & Performance brings you this billet aluminum speedometer port block-off plug that fits GM TH400 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. Does NOT fit B.O.P (Buick, Oldsmobile & Pontiac) TH-400
