Parts for your 2017 Subaru Xv-Exhaust gasket

2017 Subaru XV exhaust-gasket — what it does and when to replace it

Yes, the 2017 Subaru XV uses exhaust gaskets. Technical documentation confirms it: the Subaru Factory Service Manual for the 2017 XV/Crosstrek (Exhaust section) specifies gaskets at the cylinder-head to exhaust manifold, at the front pipe “donut” joint with spring bolts, and at rear flange joints. The Subaru FAST electronic parts catalogue (Group 44 – Exhaust, model code GP7) also lists multiple exhaust gaskets and associated hardware for these joints.

On this XV, exhaust gaskets keep the exhaust system sealed from the heads right through to the muffler. They prevent leaks that cause ticking noises, exhaust fumes under the bonnet or near the cabin, poor fuel economy, and incorrect oxygen sensor readings. That last point matters: even a small leak upstream can skew trims, trigger a check engine light, and mess with catalytic converter efficiency. Proper sealing also helps keep noise down and protect against hot gas erosion at the flanges.

Best practice is to replace exhaust gaskets any time the joint is disturbed during service, or at the first sign of leakage. For the XV’s front pipe “donut” gasket, inspect the spring bolts and seats