MSD - Replaces GM HEI Distributors that use a 4-Pin ignition module. Exhaust Gas Temperature is a

Exhaust Gas Temperature is a critical indicator of the performance of a typical racing engine

Seat Bracket - Pro Bracket - Side Mount - Adjustable - Aluminum - Black / Red Anodized - Each

5 in ID - 10 in Length - 275 lb/in Spring Rate - Steel - Black Powder Coat - Each

Fitting - Adapter - 90 Degree - 10 AN Male to 1/2 in NPT Male - Aluminum - Black Anodized - Each

All driving jackets are assembled with heavy-duty

MSD - Replaces GM HEI Distributors that use a 4-Pin ignition module. Exhaust Gas Temperature is aMSD answers the need for a strong, accurate and high performance HEI with our Pro Billet HEI. The distributor is supplied with our Digital HEI Module and Coil so there is plenty of spark energy combined with improved dwell and timing control.