VAC Performance Valve Kit, Stainless Steel, 6mm Stem (16 pcs) BMW M42

Precision manufactured for your exacting needs

VAC Forged Stainless Steel Valves are made to exacting standards with precise specifications and are suitable for both performance envelopes on street and full Race vehicles.

They work great in street vehicles for day to day use where engine build up and byproducts can harm typical "race valves", yet these valves have proven their worth on max performance all out race engines, surviving lap after lap, race after race, and even multiple seasons without being replaced!

Our valves feature:

• One piece forged stainless steel design (compared to 2 piece welded valves which typically fail at weld)
• Uses 3 groove keepers/locks *NOT INCLUDED*
• Lightweight engineering; enhance performance and increase valve train component longevity
• Low-friction coated to preserve valve guide bore
• Enhanced resistance to fatigue from heat and high RPM

VAC Tech Tips:

• These valves are a must-have when building a high performance and very high revving engine: They dramatically reduce valve weight and this improves valve train reliability greatly as the valve springs do not have so much mass to control.
• Over-sized valves can help enhance maximum engine output

** Fitment Notes **

• Please measure your valves to confirm if you have 6mm or 7mm stems.
• Early (typically E30) M42 used 7mm stem valves. To be able to fit performance valves such as our 6mm kit; you need to convert your springs, retainers, seals, guides, and valves to use 6mm type. For this reason, we highly recommend sending in your head for our re-work, where we can fit all components and make your head compatible with 6mm valves.