Parts for your 2016 Toyota Prius-Exhaust gasket

2016 Toyota Prius exhaust-gasket: what it does, and when to replace it

Based on Toyota’s technical literature for the ZVW50-series (2016) Prius—namely the factory Repair Manual procedures and the Toyota Electronic Parts Catalogue—an exhaust-gasket is absolutely used on this model. The documentation shows a multi-layer steel exhaust manifold gasket at the cylinder head, plus crush/donut gaskets at key pipe joints in the front exhaust assembly. That means the 2016 Toyota Prius is very much designed to run with exhaust-gaskets in place.

On this hybrid, the exhaust-gasket has a simple job that matters heaps: seal hot exhaust gases so they don’t leak. A tight seal keeps noise down, prevents exhaust odour entering the cabin, protects oxygen sensor readings, and helps the catalytic converter do its job. With the petrol engine cycling on and off, a tidy seal also avoids false air sneaking in and confusing the fuel trims, which can nudge fuel economy the wrong way.

While exhaust-gaskets aren’t a routine “every-service” item, they should be inspected whenever the exhaust is disturbed—say, if the manifold is removed, a catalytic converter or front pipe is replaced, or there’s any hint of a leak. Any time a joint is separated, plan on fitting a new gasket