Spring-loaded ball check valve, high quality, direct fit for Audi AAN I5 20VT, Audi/Seat/VW 1.8T, Audi 2.7T and many others. CNC-machined billet aluminum housing with stainless steel ball and spring, indestructible replacement for the original plastic valve, OE ref. 035 103 245A.

Reinforced silicone hose connecting the throttle body to the check valve, replacing the cracked and leaking original rubber part on Audi UrS4/S6 AAN engines. Service life equivalent to the vehicle's.

Reinforced silicone breather hose, replacing the cracked original rubber part, connecting the bottom of the intake manifold to the valve attached to the lower block breather hose. Audi B5 A4 1.8T, AEB code, manual transmission.

4-ply high-temperature automotive silicone PRV (pressure regulating valve) elbow, replacing the original rubber elbow, on Audi B6 1.8T. Replaces OEM part no. 06B 103 221 M.

Silicone valve cover breather hose, replacing the cracked original rubber part, direct fit, for Audi B5/B6 1.8T.

Reinforced silicone breather hose replacing the original cracked rubber part, on Audi B6 1.8T AMB mid-production engine.

Fully reinforced silicone valve cover breather hose for Audi TT225 1999-2002 AMU engine code, as well as early APX models. Replaces OEM part number 06A 103 221AA.

Fully reinforced silicone hose for the Y-shaped breather on the transverse 1.8T valve cover, replacing the original rubber part, 20 mm fitting, VW MkIV 1.8T early AWP engine code (1999-2002).

Replacement Y-shaped valve cover breather hose for the original part, 25 mm fitting, VW MkIV 1.8T late AWP code (2003-2005).

Fully reinforced silicone crankcase breather hose, replacing the original cracked and leaking rubber part, for VW New Beetle MkIV 1.8T. Replaces OEM part 06A 103 221 AK.

Silicone crankcase breather hose for Audi 5-cylinder engine, code 7A.

Silicone crankshaft breather hose for Audi 5-cylinder MC engine.