Parts for your 2020 Toyota Prius-Exhaust mount

2020 Toyota Prius exhaust-mount: purpose, checks, and replacement

According to Toyota’s Repair Manual (TIS) for the ZVW50/51 series Prius and the Toyota Electronic Parts Catalog, the 2020 Prius exhaust assembly is supported by rubber insulators (listed as “insulator, exhaust pipe”) along with brackets and hangers. Workshop diagrams in mainstream manuals covering 2016–2022 Prius models echo this layout. So yes—this model definitely uses exhaust-mounts.

These mounts cradle the pipe and muffler, isolating engine and road vibration from the cabin, keeping the catalytic converter and oxygen sensor wiring aligned, and maintaining clearance to the bumper and underbody shields. They also let the system expand and contract with heat without knocking.

For owners in Australia and New Zealand, it’s smart to inspect the exhaust-mounts at every scheduled service or roughly every 20,000 km, especially if the car lives near the coast or tackles corrugated roads. Hybrid start‑stop cycles can amplify movement at idle and shutdown, accelerating wear in tired rubbers.

• A dull thump or clunk at start‑up, shutdown, or over speedhumps
• New rattles from the rear or centre of the car
• The exhaust sitting lower than usual or touching a heat shield
• Visible cracking, glazing, or tearing of the rubber insulators

Replacement is straightforward on a hoist. Support the muffler, mist the hangers with silicone spray, then lever the old insulators off the pegs. Fit quality insulators—genuine Toyota or reputable aftermarket—matching the orientation arrows. Refit any brackets and torque fasteners to spec, then check clearances around the subframe, heat shields and rear skirt.

On ZVW50/51 cars you’ll typically find three to four mounts: two at the rear muffler, one mid‑pipe, and sometimes a front support. Warming new rubbers in hot water makes them slide on more easily. Avoid ultra‑stiff “race” mounts, they can add droning. After impacts—or catalytic‑converter repair—have the mounts and alignment rechecked.

They’re inexpensive parts that protect costlier gear—flex joints, sensors and the cat. A quick check while the Prius is on the lift for tyre rotation or brake service can save a lot of rattles later and keep the cabin calm and quiet on the daily commute.

How many exhaust mounts does a 2020 Toyota Prius have?

Most ZVW50/51 Prius models use three to four mounts: two supporting the rear muffler, one around the mid‑pipe, and occasionally an additional front support. Market variants and aftermarket systems can change the count, so it’s best to check under the vehicle or confirm via the Toyota EPC for your VIN.

When should the exhaust-mounts be replaced on a 2020 Prius?

There’s no fixed interval, replace on condition. Inspect at each service or every 20,000 km. If any insulator is cracked, perished, stretched, or the exhaust is sagging or rattling, fit new ones. Coastal conditions in Australia and New Zealand can shorten service life due to salt and heat.

Can a DIYer replace Prius exhaust-mounts at home?

Yes. With the car safely raised, a support for the muffler, and silicone spray, most owners can swap the rubber insulators in under an hour. If brackets are bent, welds cracked, or clearances are tight near the bumper or heat shields, have a technician finish the alignment and torque checks.