Parts for your 2020 Subaru Xv-Exhaust gasket

2020 Subaru XV exhaust gasket: what it does and when to replace it

Yes, the 2020 Subaru XV uses exhaust gaskets. Subaru’s factory Service Manual for the GT-series XV (FB20 engine) and the Subaru Electronic Parts Catalogue (EPC/FAST) both list multiple “gasket – exhaust” items at the joints between the front exhaust manifold/pipe, centre pipe, and rear muffler. Those sources also specify replacing disturbed crush and flange gaskets during reassembly to maintain a proper seal. So the exhaust-gasket is absolutely relevant on this model, and it’s considered a normal wear-and-service item whenever an exhaust joint is separated.

On the XV, exhaust gaskets sit between the mating faces of pipes and flanges to keep the system sealed. They stop exhaust leaks that can make the car sound tinny, allow fumes under the car, and skew oxygen-sensor readings that affect fuel economy and drivability. Subaru typically uses a crush “donut” style gasket on spring-bolt joints and multi-layer steel or graphite/metal ring gaskets on flat flanges. A healthy gasket helps the XV stay quiet, efficient, and compliant with emissions rules.

Good practice on this Subaru is to replace exhaust gaskets any time the joint is undone—such as during muffler swaps, centre pipe work, or catalytic/front pipe service—exactly as the Service Manual calls out. Go with quality OEM-spec parts, renew the spring bolts/nuts if they’re corroded, and don’t smear sealant on donut or MLS gaskets unless Subaru documentation specifically allows it. After fitting, tighten hardware evenly to the factory torque spec and recheck for leaks once the system has heat-cycled. During routine servicing, a quick look for soot marks at flanges, a whiff of exhaust odour around the car, or a light tick on cold start is worthwhile.

• Ticking or puffing noise near the engine or underfloor, especially on cold start
• Sooty deposits around flange joints
• Exhaust smell near the cabin or under the vehicle
• Slight loss of low-end torque or poorer fuel economy
• Check engine light tied to O2 sensor or fuel trim issues

Popular questions about 2020 Subaru XV exhaust gaskets

Does the 2020 Subaru XV have more than one exhaust gasket?

Yes. The XV typically uses a crush-type gasket at a spring-bolt joint and flat gaskets at other flanged connections between the front pipe, centre pipe, and rear muffler. The Subaru EPC lists these as separate service items for the model.

How often should exhaust gaskets be replaced on a 2020 Subaru XV?

They’re replaced as needed—most often whenever the joint is separated for other work, or if there’s a confirmed leak. There’s no fixed kilometre interval, but if a joint is disturbed, fit a new gasket as per the Service Manual.

Can exhaust paste be used instead of a new gasket on the XV?

Not recommended. Subaru’s procedure expects a new gasket of the correct type. Sealants can interfere with proper seating on donut and MLS gaskets and may not withstand heat and movement over time.