Made to mount on top of hard boost pipe
Made to mount on top of hard boost pipe
Made to mount on top of hard boost pipe. Vacuum port on top.
Replace your lost blanking cap on your Forge Splitter valve (FMDVSPLTR)
Creates a aggressive BOV sound. Only fits HKS BOV
Creates a "Whoosh" noise instead of a whistle. Simple install on all HKS BOV's
Converts factory diverter valve into a blow-off valve
Add a touch of audial excitement without compromising your daily comfort
This product was last offered at the strikethrough price on
09-29-2026
Replace your lost blanking cap on your Forge Splitter valve (FMDVSPLTR and FMBSPLTR)
Full replacement kit for es1832445
Used to seal the valve to the new adapter flange
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
06-13-2026
Replaces the failure-prone factory diaphragm for rock-solid boost control