Parts for your 2001 Toyota Crown-Exhaust mount

2001 Toyota Crown exhaust mount: what it does and when to replace it

Yes, the 2001 Toyota Crown uses exhaust mounts (often called exhaust hanger insulators). This is confirmed by Toyota’s Electronic Parts Catalogue for the S170-series Crown (e.g., JZS171/173, UZS171), which lists multiple “Insulator, Exhaust Pipe” components and support brackets along the system, and by the factory repair manual procedures for exhaust removal/installation that specify detaching and refitting the hanger insulators. Reputable aftermarket catalogues likewise show rubber exhaust hangers for the 2001 Crown.

On this model, exhaust mounts are the small but crucial rubber isolators that suspend the exhaust from the body. They let the exhaust move with engine torque and road bumps while keeping it centred under the car. By absorbing vibration, they help prevent cabin buzz, protect welds and flanges from stress, and stop the mufflers and pipes from knocking on the floorpan, heat shields, or rear subframe.

With age, heat and road grime, the rubber can harden, crack, or stretch. When that happens, the exhaust can sag or shift, leading to rattles over bumps or a dull thud on take-off. Left too long, a failed mount can stress other components, pull on oxygen sensor wiring, or cause premature fracture at joints.

• Tell-tale signs: exhaust sits lower than normal, visible cracks or perishing in the rubber, metallic rattles, thumps under load, or fresh contact marks on the pipe or shields.
• Service tip: during routine servicing (at least every 20,000–30,000 kilometres), inspect each hanger and bracket from the front pipe to the tail. Replace in pairs or as a set if multiple look tired.

Replacement is a straightforward driveway job for most Crowns:

1. Let the exhaust go completely cold. Support the system with a jack and a timber block to relieve load on the hangers.
2. Spray silicone lube on the old rubber mounts. Lever them off the pegs, dedicated exhaust-hanger pliers make it easier.
3. Check brackets for cracks and fastener looseness, tighten to spec if needed.
4. Fit new quality rubber insulators (OEM-style hardness works best), then remove the support and confirm clearances all round.

A quick clean of the hanger pegs and a dab of silicone spray will help future inspections. Owners who’ve lowered their Crown or fitted larger mufflers should be extra fussy about mount condition and clearances to avoid knocks and heat soak.

• How many exhaust mounts does a 2001 Toyota Crown have and where are they?
  Most S170 Crowns use several rubber hanger insulators: typically one near the front pipe/rear of the catalytic section, one around the centre resonator, and two near the rear muffler(s). Exact count varies with engine and market spec, but expect three to five mounts spaced to keep the system level and isolated.
• What are the common symptoms of worn exhaust mounts on a Crown?
  A lowered exhaust stance, knocks over speed humps, dull thuds on acceleration or when shifting from Reverse to Drive, and fresh scuffing on heat shields are classic signs. Visual checks often reveal cracked, perished, or elongated rubber insulators.
• Can universal hangers be used, or should owners stick with OEM-style mounts?
  Universal rubber hangers can work if matched for thickness, hole spacing, and durometer. However, OEM or OEM-equivalent mounts generally fit better and keep the exhaust sitting at the right height and angle, reducing the chance of contact or drone.