Additional Crankcase Vent

Aluminum connection point for extra crankcase ventilation with D10 [UNF 7/8x14] thread.
Let's you install an extra breather hose or filter.
Fits in place of the large freeze plug opposite the oil filler cap, at the top of the valve cover/camshaft cover of the 4, 5 and 6 cylinder white block engines as mounted in the Volvo S/V40, S/V90, 850, S/V/C70, etc.
Especially recommended for tuned engines that deliver 400 hp or more and high revving and trackused engines.
As well as for engines that are heavily loaded for a long time and run at higher revs (think of circuit use).