Chevy SBC 350 1Pcs Rms 1986-Up P/Side Replacement Oil Pan [Natural] These water pump pulleys are

These water pump pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs

Speedmaster water pump spacers

They are installed between the water pump pulley and the drive flange

This feature is sometimes called an air gap design

Chevy SBC 350 1Pcs Rms 1986-Up P/Side Replacement Oil Pan [Natural] These water pump pulleys areThe oil pan serves as the reservoir for the engine's oil. It is designed to hold the amount of oil that is needed to lubricate the engine when it is running, plus a reserve. The oil pan helps to cool the oil thru its contact with the outside air. Dress up your oil system with a oil pan from PCE.