Parts for your 2006 Toyota Highlander-Exhaust mount

2006 Toyota Highlander exhaust mount — what it does and when to replace it

Yes, the 2006 Toyota Highlander uses exhaust mounts (also called exhaust hangers or insulators). Toyota’s Repair Manual for the XU20-series Highlander and the Toyota Electronic Parts Catalogue list several “Insulator, Exhaust Pipe Support” pieces along the front pipe, centre section and rear muffler. Aftermarket catalogues from Walker and Dorman also enumerate direct-fit rubber hangers for the 2001–2007 Highlander platform. So, an exhaust mount is absolutely relevant to this model.

The exhaust mounts are small but crucial rubber pieces that suspend the exhaust system from the underbody. Their job is to isolate vibration, keep the pipe and muffler correctly aligned, and allow a bit of movement as the drivetrain twists. On a Highlander, healthy mounts mean less cabin buzz, no clunks over bumps, and the tailpipe sitting neatly in the bumper cut-out. When the rubber perishes or stretches, the exhaust can sag, knock on the body or subframe, or stress the flanges and welds.

As part of regular servicing, it’s smart to inspect these mounts annually (or every 10,000–15,000 km). Heat, road grime and age can harden or crack the rubber, especially near the rear muffler. Replacement is straightforward with basic tools, and genuine-spec rubber insulators maintain the correct ride height and NVH balance Toyota intended.

• Signs it’s time: thumping or rattling over bumps, visible sagging, split/cracked rubber, melted tailpipe trim, or exhaust tips sitting off-centre.
• Quick check: while the car’s safely raised, support the exhaust with a jack and wood, then push/shake gently—excessive movement or a hollow “clack” hints at tired mounts.
• Replacement tips: work on a cool exhaust, support the pipe, spray silicone/soapy water on the pegs, swap one mount at a time to keep alignment, and re-check clearances to the heat shields and rear bumper.
• Hardware and torque: inspect brackets and bolts for rust, tighten to Toyota’s spec from the repair manual after the mounts are seated.
• When to choose new mounts: if the rubber is oil-soaked, heat-hardened, or elongated, replace—don’t try to “shim” them.

Keeping the Highlander’s exhaust mounts fresh protects the catalytic converter flanges and muffler welds, curbs cabin vibration, and stops annoying knocks. It’s a low-cost job that pays off in comfort and longevity.

Popular questions

How many exhaust mounts are on a 2006 Toyota Highlander?

Most 2006 Highlanders have multiple rubber insulators—typically two to three around the rear muffler area and one or more supporting the mid/front sections. The exact count can vary with engine and exhaust layout. A quick underbody look or checking the Toyota EPC for your VIN will confirm the positions.

Can they drive with a broken exhaust mount?

It might still drive, but it’s not ideal. A failed mount lets the exhaust sag and swing, which can cause banging, strain joints, crack welds, or melt nearby trim. If a mount’s torn or missing, it’s best to sort it promptly to avoid bigger—and costlier—exhaust repairs.

What does a worn exhaust mount sound like?

Common giveaways are dull thuds or clunks over bumps, a buzz at idle, or a rattle at certain revs as the pipe taps a crossmember or heat shield. If the tailpipe looks off-centre or low, that visual clue often pairs with the noise.