Parts for your 2017 Honda Accord-Exhaust gasket

2017 Honda Accord exhaust gasket — purpose, care, and when to replace

Yes, the 2017 Honda Accord uses exhaust gaskets. Honda’s factory service information for the 2013–2017 Accord (Helm service manual, Exhaust System section) and Honda Genuine Parts diagrams for the 2017 Accord (both 2.4L four-cylinder and 3.5L V6) show exhaust manifold-to-cylinder head gaskets as well as pipe “donut”/ring gaskets at the front pipe and catalytic converter joints. These sources confirm the part is fitted and serviceable on this model.

On this Accord, the exhaust gasket’s job is simple but important: it seals the high‑temperature joints so exhaust doesn’t leak, the oxygen sensors get accurate readings, and the cabin stays free of fumes. Up front there’s a multi‑layer steel (MLS) or graphite-style gasket at the manifold or manifold-catalyst interface, and further back there are crush-type ring gaskets (often called donuts) where the spring‑bolted flanges meet. Over time, heat cycling, corrosion, and a few knocks over rough Kiwi or Aussie roads can flatten or crack these seals.

They’re not a scheduled replacement item, but they should be renewed any time an exhaust joint is disturbed or if there are signs of a leak. A tidy replacement keeps the engine running sweet, reduces noise, and protects the catalytic converter by preventing false O2 readings from a lean condition.

• Watch for: a ticking noise on cold start that quietens warm, sooty marks around flanges, a whiff of exhaust near the bonnet, reduced fuel economy, or a check‑engine light related to O2 or catalyst efficiency.
• When replacing: always use new gaskets and, for spring‑bolt joints, consider new springs/bolts. Clean mating faces, align the pipes without strain, and torque to the specs in the Honda manual for your engine (2.4L vs V6 differ). No sealant unless Honda specifies it.
• After fitting: recheck for leaks after a couple of heat cycles, and make sure hangers and rubbers support the system evenly so the new gasket isn’t stressed.

Costs are reasonable: a typical donut gasket is inexpensive, and manifold gaskets are modestly priced, expect around A$150–A$450 (NZ$160–NZ$500) fitted depending on engine, hardware condition, and shop labour.

Does a 2017 Honda Accord have an exhaust gasket, and where is it?

It does. There’s a gasket at the manifold or manifold‑catalyst joint up front, and ring (donut) gaskets at the spring‑bolted flanges further down the system. Both the 2.4L and V6 have them as shown in Honda’s service and parts documentation.

Is it safe to drive with a leaking exhaust gasket?

Short hops might seem fine, but it’s not recommended. Exhaust leaks can let fumes creep towards the cabin, skew O2 sensor readings, trigger warning lights, and over time can harm the catalytic converter. Best to get it sorted promptly.

How often should the exhaust gasket be replaced?

There’s no fixed kilometre interval. Replace any time the joint is taken apart, if there’s a leak, or when corrosion or flattening is evident. Using new hardware and proper torque helps the new gasket last longer.