Tial 50MM BOV Mount Adapter, BMW 335i Surface finish: Choice of polished

Surface finish: Choice of polished / brushed

GT4202R units also

BMW 3 Series E90/E91/E92/E93 PRE-LCI (Non-M / Non-diesel)

Adapter -4AN male flare to 1/8" BSP male for oil adapter on British oil fittings to AN/JIC -4 flare

Oil return (oil drain) flange (for GT15 through GT35R) with integrated 5/8" male slip-on barb

Tial 50MM BOV Mount Adapter, BMW 335i Surface finish: Choice of polishedBlow off valve mounting adapter. Mounts (1) Tial 50mm BOV in original location on BMW 335i pre throttle body chargepipe (boost pressure pipe). Custom machined to have OEM fit onto stock chargepipe. Replaces the stock plastic black bypass valve. Atmospheric vent for blow off valve sound and holds boost more reliably than stock valve (stock chargepipe has (2) of these so we recommend replacing both valves, so order 2 units. Also since you are using this