March Performance Serpentine 6-Rib Crankshaft Pulley - 7 in Diameter - Short Water Pump - Big Block Chevy COMMANDER-STX-M1-HK High compression race engines require

High compression race engines require "indexing" of spark plugs to prevent contact between piston dome and the ground wire of the spark plugs

Racewire is used by many NASCAR Cup teams and chassis builders

Warning light built in

PERFORMANCES: The ACEA A3 / B4 and API SN standards requires from the lubricant an outstanding detergent / dispersant power

March Performance Serpentine 6-Rib Crankshaft Pulley - 7 in Diameter - Short Water Pump - Big Block Chevy COMMANDER-STX-M1-HK High compression race engines requireProduct Description: Crankshaft Pulley Serpentine 6 Rib 7 in Diameter Hardware Included Aluminum Clear Powder Coat Short Water Pump Big Block Chevy All March Performance pulleys and brackets are manufactured with a unique blend of durability, performance and STYLE!. With over 30 years of aircraft and automotive manufacturing experience you can be assured that our systems will fit perfectly and run true! Quality Materials All kits are machined from