Macht Schnell 6-Point Harness Steel Submarine Bracket - BMW E46 / E82 1M / E9X M3

A 6-point racing harness requires a sub-strap mounting point below the seat to route the crotch (submarine) belt — without it, a 6-point harness functions as a 4-point, leaving the lower body unrestrained in a frontal event. The Macht Schnell 6-Point Harness Steel Submarine Bracket provides that mounting point for the BMW E46 3-Series and M3, E82 1M, and E9X M3, bolting to factory floor locations with no drilling or permanent modification required.

Laser-cut from high-strength steel and powder-coated for corrosion resistance, the bracket is designed specifically for the floor geometry of these BMW platforms to position the sub-strap at the correct angle for proper harness geometry. Works with 5-point and 6-point harnesses. Pairs with the Macht Schnell Competition Liteweight Floor Mounts and Bolt-In Harness Receptacles for a complete race seat setup on these chassis.

Brand: Macht Schnell
Fitment: BMW E46 3-Series/M3 (1999–2006), E82 1M (2011), E9X M3 (2008–2013)
Function: Submarine (sub-strap) mounting point for 5 and 6-point racing harness
Material: High-strength steel, laser-cut, powder-coated
Installation: Bolts to factory floor locations — no drilling
Harness compatibility: 5-point and 6-point
Pairs with: Macht Schnell Competition Liteweight Floor Mounts + Bolt-In Harness Receptacles