AMC oil pump gears outfitted with hydro relief grooves increase you distributor/camshaft gear life as well as the life of your oil pump cavity. We start with a set of standard AMC oil pump gears, correct any surface irregularities and CNC mill relief grooves into the idler gear. More info on this in our products section in the Bulltear forum. Comes with spirng, plunger and gasket.
All “HRC” gears are machined dry and no foreign solvent used to damage gears or cause oil integrity issues. Fits AMC V8 67-91 290 304 343 360 390 401
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