Quiet the drone and keep exhaust flowing where it belongs with the AP Exhaust Exhaust Muffler Assembly (P/N 20057) — an AP EXHAUST muffler assembly that installs as a direct-fit replacement for the 2009-2013 Subaru Forester [H4-2.5L] and the 2008-2011 Subaru Impreza [H4-2.5L].
Built to route spent exhaust gases from the engine to the tailpipe while dampening combustion noise, this assembly helps restore proper exhaust flow and sound control when the original muffler rusts through, rattles, or develops leaks.
- Direct-fit assembly: Designed to replace the factory muffler on the listed Subaru applications.
- Noise control: Dampens exhaust sound as gases pass from the engine toward the tailpipe.
- Country of origin: Made in the United States.
- Ships as one unit: Package quantity is one; the listed applications use one per vehicle.
If a corroded, leaking, or noisy muffler is the cause of your loud exhaust, this replaces it. Always confirm fitment for your vehicle before ordering.
Frequently Asked Questions
What vehicles does the AP EXHAUST muffler assembly 20057 fit?
It is a direct-fit replacement for the 2009-2013 Subaru Forester [H4-2.5L] and the 2008-2011 Subaru Impreza [H4-2.5L]. Confirm fitment for your vehicle before ordering.
What does this muffler assembly do?
It routes exhaust gases from the engine toward the tailpipe while dampening combustion noise, helping control exhaust sound on the listed applications.
How many do I need per vehicle?
The listed applications use one per vehicle, and this listing ships as a single unit. Package quantity is one.
What are signs my muffler may need replacing?
Common signs include a louder or droning exhaust, rattling from internal corrosion, visible rust-through, or an exhaust leak. Diagnose the cause before replacing.
Where is this muffler assembly made?
The country of origin is the United States.
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