BMW S65/S85 Billet Aluminum Spark Plug Tubes

The OEM S65/S85 spark plug tubes are plastic, and they crack — a common oil-leak point during valve-cover service. These CNC-machined 6061 billet aluminum tubes replace them with a part that won't fail, adding thermal stability and a black anodized finish that resists corrosion. Made in the USA — a natural addition during any valve-cover service or engine refresh.

Key features:

• Material: 6061 billet aluminum, made in the USA
• Enhanced seal: increased contact surface to prevent oil leaks
• Finish: black anodized for corrosion protection
• Precision fit: direct replacement

Kit includes:

• S65: 8 billet spark plug tubes and 16 Viton O-rings
• S85: 10 billet spark plug tubes and 20 Viton O-rings

Not needed with our V2 billet valve covers. The spark plug tubes are built into those covers.

Fits: E9X M3 (S65) / E6X M5/M6 (S85)