Parts for your 2000 Subaru Legacy-Exhaust mount

2000 Subaru Legacy exhaust mount: what it does and when to replace it

Yes, the 2000 Subaru Legacy uses exhaust mounts. Technical references including the Subaru factory service manual for the BE/BH Legacy (Exhaust section) and Subaru’s electronic parts catalogue (often listing these as “Insulator – Exhaust” or “Cushion – Exhaust”) specify multiple rubber mounts that suspend the front pipe, centre section, and rear muffler from the body.

On this Legacy, the exhaust mounts (also called hangers or insulators) hold the system in the right spot under the car while isolating vibration and noise. They let the exhaust move slightly as the engine rocks and the suspension works, so joints, welds, and flanges aren’t stressed. Keeping the muffler and pipes centred prevents rattles on heat shields, the subframe, and bumper, and helps maintain safe clearances around hot sections.

They’re simple, but they wear. Rubber hardens with heat cycles, sags with age, and can crack or elongate. Typical signs include a droopy tailpipe, a metallic knock over bumps, fresh scuff marks near the exhaust, or a new buzz/drone that wasn’t there before.

As part of routine servicing, it’s smart to check the mounts at every service or at least each 20,000 km. Look for splits, glazing, or stretched holes, and make sure the brackets and studs they slip over aren’t bent or rusty. If one mount is cooked, the rest won’t be far behind, so replacing them as a set on that section of the system keeps things tidy.

Replacement is straightforward:

• Support the exhaust with a jack and wood block before removing any mounts.
• Use silicone spray or soapy water to slip the old rubbers off and the new ones on.
• Swap one mount at a time to keep alignment, and check clearances all around before lowering the car.
• If any hanger brackets are corroded or loose, tidy them up and tighten to the factory spec from the Subaru manual.

For parts choice, OE-style rubber insulators keep cabin comfort closest to stock. Firmer polyurethane mounts can reduce movement on cars with heavier or aftermarket exhausts, but may pass a bit more vibration into the cabin. Avoid solid mounts—they can crack welds and make the ride coarse.

After fitting, start the car, let it heat up, and give the system a gentle shake. If it’s quiet, centred, and not touching anything, the Legacy’s good to go.

Popular questions about 2000 Subaru Legacy exhaust mounts

How many exhaust mounts does a 2000 Legacy have?
Most BE/BH cars use around four to six mounts, depending on trim and whether the system is single or twin outlet. You’ll typically find one near the front/centre section and two around the rear muffler, with some variants using extra supports.

How often should the mounts be replaced?
There’s no fixed interval. Inspect at each service, replace when the rubber is cracked, hard, or stretched, or if there’s knocking or sagging. In Aussie and Kiwi conditions, many last 5–10 years, but heat and towing can shorten that.

Are polyurethane hangers a good upgrade?
They’re handy if the car runs a heavier or performance exhaust, as they limit movement. Expect a touch more vibration at idle or on rough roads. For a comfortable, stock feel, quality OE-style rubber is the safer bet.