celebrated for its reliability and efficiency

They are NOT compatible with OEM connecting rods or crankshafts

The BMW M50 / S50 intake manifold is shown above

For over 15 years

N63 / S63 Fire Ring Set 03055-TD8R-S celebrated for its reliability and5150 AutoSport Fire Ring Set for N63 S63 BMW Engines Compatible with OEM Head Gaskets 5150 AutoSport Fire Rings are designed to enhance head gasket sealing in high performance BMW engines. Compatible with OEM head gaskets, these rings provide a superior seal for forced induction and high compression applications. Available in sets of six or eight, they help prevent head gasket failure under extreme conditions. Compatible with OEM head gaskets for a