O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55
O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55
Located on the driver side of the cylinder head
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
04-10-2026
O-Ring between thermostat housing and cylinder head
Clip and o-ring sold separately
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
09-03-2026
O-Ring between thermostat housing and cylinder head
Common point of failure or leaking for the cooling system
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
05-02-2026
Ensure a proper seal when installing your new thermostat
2X Entries Into Our F80 M3 Sweepstakes