Parts for your 2004 Subaru Forester-Exhaust mount

2004 Subaru Forester Exhaust Mount (Hanger/Insulator)

Yes, the 2004 Subaru Forester uses exhaust mounts (often called exhaust hangers or insulators). This is confirmed by Subaru’s 2003–2008 Forester Service Manual in the Exhaust System section and the Subaru electronic parts catalogue for SG-series Forester, both of which show multiple rubber hanger insulators supporting the mid-pipe and rear muffler. So an exhaust-mount is absolutely relevant on this model.

The exhaust mounts on a 2004 Forester do a simple but vital job: they suspend the exhaust from the body while isolating vibration. Those chunky rubber insulators keep the muffler and pipes at the correct height and angle, stop metal-on-metal contact, and reduce booming and rattles in the cabin. They also protect welds, flanges and the manifold by allowing a bit of movement as the system heats, cools and flexes on bumpy roads.

On an SG Forester there are typically four to five mounts, depending on trim and towbar/bracket fitment. They sit on brackets near the centre pipe and around the rear muffler. Over time, the rubber can harden, crack, stretch, or even tear, especially if the vehicle does regular off-road work or tows.

As part of routine servicing, it’s smart to inspect the exhaust mounts yearly or every 20,000 km. Look for perished rubber, elongated holes, shiny contact marks on the exhaust or body, and a tailpipe that sits off-centre. If the exhaust knocks over bumps, squeaks on start-up, or there’s extra drone at certain revs, tired mounts are a usual suspect.

• Replacement tips: let the exhaust cool fully, support it with a jack stand, and spray silicone lubricant on the old insulators to slide them off the pegs.
• Fitting new mounts: install like-for-like OEM-style rubber for factory comfort, or quality polyurethane for a firmer, longer-lasting hold if you’re okay with a touch more vibration.
• After install: recheck tip clearance to the bumper and suspension arms, and make sure there’s no contact at idle or under rev blips.

Many techs replace mounts in pairs around the muffler to keep the system sitting square. If one has failed, the others are often not far behind. It’s a low-cost fix that can save a muffler, gasket, or O2 sensor from premature grief.

Popular questions about 2004 Subaru Forester exhaust mounts

How many exhaust mounts does a 2004 Forester have?
Most SG Foresters run four to five mounts: usually one or two around the mid-pipe and two or three at the rear muffler. Exact count can vary with trim, towbar hardware and exhaust options. A quick look under the car will confirm what’s fitted.

What are the signs my exhaust mounts need replacing?
Common clues include knocking over bumps, a tailpipe that’s sitting low or off-centre, extra cabin drone, and visible cracking or stretching of the rubber. Any metallic contact marks on the body or subframe also point to sagging mounts.

Can polyurethane mounts be used instead of rubber?
Yes. Polyurethane hangers are popular for longevity and a firmer hold, handy if the car tows or runs a heavier aftermarket system. Expect slightly more transmitted vibration at idle compared with OEM-style rubber, which many owners still prefer for everyday comfort.