MSD 85551 Pro-Billet Distributor

Easy-to-adjust mechanical advance with supplied springs and stop bushings

Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the RPM range

Polished steel shaft is QPQ coated and guided by two sealed ball bearings

Advance plate and weights are fine blanked from chromoly steel and QPQ coated for friction reduction

Will not accept a vacuum advance canister

This is our most popular performance distributor. The housing is machined from a billet of 6061-t6 aluminum on a state-of-the-art CNC machine producing exact tolerances. For high rpm stability, a .500 inch Steel shaft is supported by a sealed ball bearing and a long sintered bushing. This shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pick-up mounted in the housing. This high output magnetic pick-up is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pick-up is maintenance free. Just above the pick-up is MSD's adjustable mechanical advance assembly. Different springs and stop bushings are supplied so you can tune an advance curve to match your application.
Brand: MSD, Model: 85551, Color: Red