Parts for your 2022 Subaru Outback-Exhaust gasket

2022 Subaru Outback Exhaust Gasket: What It Does, and When to Replace It

Yes, the 2022 Subaru Outback uses exhaust gaskets. This is confirmed by Subaru’s Factory Service Manual (via Subaru Technical Information System), which details manifold-to-head gaskets and joint gaskets in the exhaust, and by the official Subaru Genuine Parts Catalogue listing multiple exhaust gaskets for both the 2.5 FB25 and 2.4T FA24 engines. So the exhaust gasket is absolutely relevant to servicing this model.

On the Outback, exhaust gaskets seal the joins where hot gases exit the engine and flow through the system. They sit between the cylinder head and manifold, at the front pipe (including the donut/crush gasket), and—on turbo XT variants—around the turbo and downpipe. Their job is to keep the system gas-tight so the car stays quiet, emissions stay clean, sensors read correctly, and performance and fuel economy don’t take a hit.

As part of routine servicing, it pays to keep an ear out for a sharp ticking on cold start, sniff for exhaust smell under the bonnet or near the firewall, and look for sooty marks at flanges. Any of these can point to a tired gasket. While Subaru doesn’t set a fixed replacement interval, gaskets are typically single-use: replace them whenever an exhaust joint is undone (manifold work, catalytic/front pipe work, or turbo/downpipe removal). Using fresh, OEM-quality MLS (multi‑layer steel) or specified crush gaskets is the go.

When fitting, clean the mating surfaces, align studs carefully, and follow the factory torque sequence. Avoid sealants unless Subaru specifically calls for one—most exhaust gaskets are designed to seal dry. After the first proper heat cycle, a torque check on accessible fasteners can help keep things snug. If the vehicle sees lots of short trips or towing, check those joints a bit more often, as thermal cycling is harsher.

• Common leak signs: ticking noise, fumes in cabin, black soot at flanges, poor fuel economy, or a check engine light due to skewed O2 sensor readings.
• Turbo models have extra gaskets at the turbo inlet/outlet—always renew these when disturbed, along with any specified crush washers and hardware.
• If fasteners are rusty, replace them