Valvetronic Designs BMW G8X Flange Gasket

70mm Stainless Steel Downpipe Gasket • S58 Twin-Turbo Inline-6

OE Cross Reference: BMW 18308053348 (18 30 8 053 348)

A leak-free exhaust starts with a proper seal. The Valvetronic Designs 70mm Stainless Steel Flange Gasket is a direct-fit replacement for the downpipe flange connection on S58-powered BMW M models. Whether you're installing new downpipes, swapping exhaust components, or servicing your current setup, this gasket ensures a tight, reliable seal that holds up to high exhaust temperatures and boost.

Features

• Stainless Steel Construction: Built to withstand extreme heat and repeated heat cycles without breaking down.
• 70mm Diameter: Precision-sized for the downpipe flange on the S58 platform.
• Leak-Free Seal: Prevents exhaust leaks that can cause ticking noises, lost performance, and check engine lights.
• Direct Fit: Designed to work with Valvetronic Designs downpipes and exhaust systems as well as factory components.

Fitment

• BMW G80 M3 / G82 M4 / G83 M4 Convertible
• G87 M2
• BMW F97 X3M / F98 X4M

Tip: Always install a new gasket when removing or replacing exhaust components for the best seal.

📩 Questions or fitment confirmation? customerservice@valvetronic.com

Orders are processed same or next business day. Shipping times vary depending on the product, shipping service, and whether freight shipping is required. While we ensure all inventory levels are current and accurate, they can change due to logistics and inventory feeds. Standard shipping typically takes 3-7 business days, but some items may require additional time depending on their origin. Feel free to call us anytime for the latest status of your order.