Parts for your 2016 Lexus Is-Exhaust mount

2016 Lexus IS exhaust-mounts (exhaust hangers): purpose, servicing and when to replace

Exhaust-mounts are absolutely used on the 2016 Lexus IS. Lexus/Toyota technical references—namely the Lexus IS (GSE/AVE/NRE30 series) Repair Manual, Exhaust Pipe section, and the Toyota/Lexus Electronic Parts Catalogue (Group 17, Exhaust)—list multiple “insulator, exhaust pipe support” components (often called exhaust hangers or rubber mounts) supporting the front pipe, centre section and rear mufflers. These rubber insulators are common to IS200t/300/350 and IS300h variants, with brackets and insulators positioned to control height and alignment of the system.

On this model, the exhaust-mounts suspend the pipework and mufflers from the underbody while isolating engine and road vibration. That means less drone in the cabin and reduced stress on welds and flanges. They also let the system move a little as it heats and cools, so nothing binds or bangs against the body, guards or heat shields.

As part of routine servicing, it’s smart to inspect the exhaust-mounts whenever the vehicle is up on a hoist—ideally at every major service or around each 40,000–60,000 km. Look for perished rubber, surface cracking, elongation of the holes, or mounts that sit twisted because the rubber has softened. Any of those can let the exhaust sag, contact the subframe, or knock over bumps, especially on cold start when the engine rocks a touch more.

Replacement is straightforward: support the exhaust, unbolt the hanger brackets if required, and slip the old insulators off the pegs. A spritz of silicone spray helps. Refit new OEM-quality rubber insulators (or a reputable equivalent), check bracket condition and heat-shield clearance, and torque any bracket fasteners to the service manual spec. On higher‑kilometre cars, replacing mounts in pairs or across an axle line keeps the system sitting square.

For owners chasing sharper response, stiffer polyurethane hangers exist, but they can add noise and harshness. For most daily-driven 2016 IS sedans, fresh OE-style rubber is the sweet spot for comfort and longevity. If there’s a rattle after replacement, re-check clearances at the tunnel, crossmember, rear valance and undertray, and confirm the tips are centred in the bumper cut-outs.

• Typical symptoms of tired mounts: cold-start rattle, knocking over speed bumps, sagging muffler, or visible cracks in the rubber.
• Best practice: inspect at service time, replace at the first signs of perishing, and verify clearances with the car at ride height.

How many exhaust-mounts does a 2016 Lexus IS have?

Most 2016 IS variants use several rubber insulators from the front pipe to the rear mufflers—commonly two around the centre/rear sections and one or two at the tail silencers per side. Exact count varies with engine and market exhaust layout, but expect 3–6 mounts across the system.

What are the signs an exhaust-mount needs replacing on a 2016 IS?

Tell-tales include a dull knock over bumps, a rattle on cold start, the muffler sitting off-centre, or rubber that’s cracked, stretched, or shiny from contact. If a mount has let go, the exhaust can sit low, tap heat shields, or stress a joint.

Are polyurethane exhaust hangers a good idea for a Lexus IS?

They can firm up support and help with clearance on modified systems, but they usually transmit more vibration. For a stock 2016 IS used day-to-day, quality rubber mounts provide the best NVH balance while still controlling movement.