ARP 200-8438 Washer Kit M12 ID .876 OD chamfer black oxide washer ymm_47 Fits Following Engines: 455 CID
Baker’s notes & crumb story
Description
Fits Following Engines: 455 CID Oldsmobile V8
The change in performance is a noticeable factor: compared in back-to-back runs on the Akrapovič dyno against a BMW M135i using a standard stock exhaust
7 kWat 2550 rpm
Inlet Attachment - Female Threads
2L engines
ARP 200-8438 Washer Kit M12 ID .876 OD chamfer black oxide washer ymm_47 Fits Following Engines: 455 CIDMetric Washer Kit 8740 Chrome Moly M12 x . 876 x 2. 3mm (. 090) (ID x OD x Thickness) Chamfer: Yes