GFB 5703 Atmospheric Blow Off Valve Trumpet with 38mm Filter Mount

The GFB 5703 universal atmospheric trumpet with filter mount is an outlet trumpet for atmosphere-venting blow off valves (BOVs). It is made for drivers whose BOV vents to atmosphere for sound and who drive in dirty environments. It gives a louder, more distinctive blow-off sound than a regular hose barb outlet.

Key Features:

• Trumpet-style outlet that enhances the blow-off sound
• Includes a 38mm (1.5") section for mounting a suitable filter (filter sold separately)
• With a filter fitted, helps keep dust, sand, mud and other debris out of the BOV

Fitting a filter to the trumpet protects an atmosphere-venting BOV without giving up its sound.