Description High operating temperatures and repeated thermal cycling cause the plastic cooling flange on the back of your cylinder head to deteriorate over time. This leads to o-ring sealing problems, cracking, and ultimately leaking. This common leaking point is a headache that is easily fixed with our comprehensive Coolant Flange Replacement Kit. Fitment: Make Model Submodel Engine Audi B5 A4 FWD 1.8T Audi B5 A4 Quattro 1.8T Volkswagen Passat B5 4 Motion 1.8T Volkswagen Passat B5 FWD 1.8T Kit includes: • Cylinder Head Cooling Flange • 2 x O-Rings