GFB Blow Off Valve Filter

GFB’s 5711 foam filter is designed to protect atmosphere-venting BOVs that operate in dirty environments. Made in Australia by Uni Filter for GFB, the 5711 features a foam filter element with an internal steel reinforcement, and will keep the dirt, sand, mud, and other muck out of your BOV!

The large filter area is specifically sized to ensure minimum restriction to the blow off valve operation. Don’t underestimate how much air a BOV dumps in a very short amount of time – the tiny 25mm breather filters that other brands use significantly strangle the flow capacity of the BOV.

Supplied with a stainless steel clamp, the 5711 filter can be installed onto any 38mm/1.5” BOV outlet, including our 5703 trumpet and 5238 recirc outlet.