(7) E Hub Plates (OEM = 5)

Male Fitting Selection:a

Both end ports are machined with 8AN ORB (3/4-16 female) threads

These kits are perfect for various performance-oriented uses

these bearings improve engine efficiency and power output while offering superior protection against bearing "spinning" under stress

Cylinder Head O-Ringing Service, 6-Cylinder BMW Engines Series 1 (7) E Hub Plates (OEM5150 AutoSport Cylinder Head O Ring Installation Service for 6 Cylinder BMW Engines O ringing an engine cylinder head for high performance, high boost turbo applications provides several mechanical advantages. These advantages primarily focus on improving the engine's sealing capabilities and durability under extreme conditions. Price includes head resurfacing and wash. Key mechanical benefits of O ringing an engine cylinder head: 1. Superior Sealing: