No thicker than a stock pump. Gears with fewer, but larger, teeth provide increased oil volume for both supply and return sides of the pump. Supply gears are 99% wider than stock and standard S&S oil pumps. Increased scavenging capacity results in: Less oil in the crankcase; Less oil in carryover; Equipped with a stock length oil pump drive shaft; Everything in the "pump only" kits; Oil pump drive shaft gear; Oil pump pinion shaft gear; Steel breather gear and shim kit.
Standard style covers have feed and return holes in the stock locations. The universal cover has a number of oil feed and return option, allowing maximum flexibility for custom applications.
Fitment: Pump Kit w/Gear