STM Water Pump Bypass with -16ORB for Evo 8/9 (EVO89-WPB)

The 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 speed.

Vehicle Fitment:
2003-2006 Mitsubishi Lancer Evolution VIII-IX

Recommended Vibrant ORB to AN fittings:
• -16ORB to -10AN (16838)
• -16ORB to -12AN (16842)
• -16ORB to -16AN (16845)
• -16ORB to -20AN (16847)

Features:
• 6061 billet aluminum
• -16AN ORB port
• Stainless bolts included
• USA Made

Purchase Includes:
(1) Water Pump Bypass (EVO89-WPB)
(5) M8x1.25×12 Bolts (5MM Head) (STM-11509599)
Also Available:
STM Block Off without ORB

Notes:
Redesigned in November 2024, now made in-house at STM from billet aluminum.

Previous Part Numbers: STM-EVO89-WPBO-10AN, STM-EVO89-WPBO-12AN, STM-EVO89-WPBO-16AN

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