N52 (3.0L NA I6) and N55 (3.0L turbo I6) across 1/3/5 Series, X3/X5, Z4, and related models. 1× rear main seal installer tool (hardware not included; reuse OE bolts if applicable). Most BMW rear mains arePTFE style—install dry (no oil/grease on lip or bore).
This precision driver is sized for8.0 mm valve stems and0.500″ (12.7 mm) guide bosses, matching the OEM style used on GM LS/LT, modern Hemi, Ford 7.3 “Godzilla,” and more. Gen III Hemi V8 – 5.7L, 6.1L, 6.4L Hemi (2003+) Chrysler/Dodge Identical (very close fit) 7.94 mm stem (0.3125″); ~12.6–12.7 mm guide Uses LS1-like positive seals; early Hemi applications often use a hat seal on intake Mopar seals: 8.0 mm stem Viton seals are available.
25 mm, 30 mm, 35 mm, 40 mm, 50 mm male + female dimple dies. Swap in the dimple dies and draw the flare with the driver/press (or a vise with the correct hole size). Punch the pilot hole with your knockout set.