Parts for your 2009 Subaru Outback-Exhaust mount

2009 Subaru Outback exhaust mounts

Exhaust mounts (often called exhaust hangers or insulators) are absolutely fitted to the 2009 Subaru Outback. Technical sources including the Subaru Legacy/Outback 2005–2009 Service Manual (Exhaust System section) and the Subaru Electronic Parts Catalogue (BP/BL/BP9 models, MY2009) list multiple “Insulator – Exhaust” rubber mounts and related brackets (“stays”) supporting the centre pipe and both rear mufflers. Typical Subaru part numbers referenced in these sources include 44022AE000, 44022AE010 and related supersessions, varying by VIN.

On a 2009 Outback, the exhaust mounts’ job is to hold the exhaust system in place while isolating vibration. The rubber insulators let the pipes and mufflers move a little as the engine rocks and the system heats and cools, which stops drumming in the cabin and prevents metal-on-metal contact under the car. Most AU/NZ-spec cars run about six rubber mounts: one around the centre section and two per rear muffler, but the exact count can differ by engine and trim.

Because they live under the car and cop heat, water and road grime, the rubber eventually perishes or stretches. When that happens, the system can sag or shift and start knocking on the subframe, towbar, or body. Common tell-tales include:

• Rattles or thumps over bumps, especially from the rear
• Buzzing at idle that changes when blipping the throttle
• Tailpipe sitting low or off-centre in the bumper cut-out
• Visible cracks, hardening, or oil-soaked rubber insulators

Replacement is straightforward and inexpensive. Always work on a cool exhaust, support the pipe/muffler with a stand or jack, and spritz the old mounts with silicone spray to slide them off the pegs. A 14 mm spanner/socket usually handles the stay bolts if a bracket needs loosening. Fit quality OEM-style rubber (or polyurethane if a firmer feel is desired), ensure the exhaust sits naturally without preload, then snug any bracket bolts to factory torque (around 25 N·m for typical muffler stay-to-body bolts, per Subaru service data). Re-check that there’s adequate clearance all around once the car is back on its wheels.

There’s no fixed interval, but it’s smart to inspect the mounts at every service or 10,000–15,000 km. If one mount has failed, replacing the pair on that muffler side helps keep alignment tidy. Keeping the mounts in good nick reduces stress on joints and flanges and helps the Outback stay quiet and rattle-free.

How many exhaust mounts does a 2009 Subaru Outback have?

Most 2009 Outbacks have about six rubber insulators: one around the centre/mid section and two on each rear muffler. The exact number can vary with engine, market and towbar/bracket fitment. A quick look underneath or a check against the Subaru EPC by VIN will confirm the count.

What are the signs the exhaust mounts need replacing?

Look for rattles or thumps over bumps, a tailpipe that sits low or off-centre, buzzing at idle, or visible cracking/hardening of the rubber. If the exhaust taps the subframe or bumper, the mounts are a prime suspect.

Can they be replaced at home?

Yes, with basic tools. Let the exhaust cool, support the system, lubricate the mounts with silicone spray, then lever them off and slide new ones on. Plan 30–60 minutes on stands for a typical set. If brackets were loosened, torque them correctly and re-check clearances.