STM Water Pump Bypass with -16ORB for Evo 8/9 (EVO89-WPB) BC Brian Crower increased from the factory 29

increased from the factory 29 spline bars

46042CSL 1990 to 1999 FWD DSM Front (Right) Slotted (Cryo-Treated) 126

• Premium Steel top rings with Napier second ring

• Crank material forged alloy steel

Part Number: 6B1140H-STD

STM Water Pump Bypass with -16ORB for Evo 8/9 (EVO89-WPB) BC Brian Crower increased from the factory 29The billet STM Evo 8 9 water pump bypass plate features a 16 ORB outlet. It was designed by the STM team and used in several STM race cars over the years when installing an electric water pump for various reasons. In most cases, when it comes to high reving Evos, the water pumps tend to fail. Using this plate in conjunction with an electric pump removes one more failure points, allowing you to choose water flow rotation and gain control over water