MSD 858051 Billet Other sku-990857395 UPC 090127064429

The MSD 858051 billet distributor is listed as Other in Performance Ignition and Electrical (SKU sku-990857395; UPC 090127064429). Its CNC-machined aluminum housing and base come with a steel gear. The polished steel shaft has a QPQ coating and runs in a sealed ball bearing.

The chrome-moly steel advance plate and weights are fine-blanked and QPQ-coated to reduce friction; the weight pins are staked and TIG-welded to the plate. Supplied springs and stop bushings let you adjust the mechanical advance, while nylon pads help the weights move smoothly. The advance assembly can be locked out for a crank-trigger system.

A maintenance-free magnetic pickup and precision reluctor provide trigger signals across the rpm range.