OMNIVALEA Crankcase Breather Pressure Valve VW Transporter T4 LT 2.5 TDI 074129101

This crankcase breather pressure regulator valve controls case pressure and separates oil vapour in the engine ventilation system on the VW Transporter T4 and LT II with the five-cylinder diesel engine (074 family, such as the 2.5 TDI). Moulded from glass-fibre reinforced polyamide (PA-GF30), it replaces a valve whose diaphragm has hardened or split and begun causing oil leaks, rough idle or seals being pushed out by crankcase pressure. It restores correct crankcase ventilation and pressure regulation. Fit the matching diesel engine variant, as petrol and other diesel engines use a different breather.