Walker Exhaust 21745 exhaust muffler for the 2009-2013 Subaru Forester H4 2.5L and other vehicles quiets exhaust noise as gas passes through it on the way to the tailpipe.
- Quiet-Flow SS line with 100% stainless-steel heads, shell, bushings, louvered tubes and partitions
- Internal drainage system that reduces moisture collection
- Louvered tubes lower noise levels, and domed heads help reduce radiated noise
- Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion
- Spun-locked heads and spot welds for stability and longer service life
- Acoustic and flow tested design
Quick facts
- Part: Walker Exhaust 21745 exhaust muffler
- Fits: 2009-2013 Subaru Forester H4 2.5L and other vehicles
- Material: Stainless steel
- Condition: New
A louder exhaust note, a rattle or visible rust holes can mean a muffler has worn out. With the engine off and cool, look at the outlet tip for heavy rust or soot streaks, and leave the rest to a shop that can inspect under the car, since a leaking pipe or a loose hanger can make similar noise.
Fits
It is a direct-fit replacement for the 2009-2013 Subaru Forester H4 2.5L, and it is also a muffler for the 2008-2011 Subaru Impreza H4 2.5L.
Specifications
Fit and size
- Quantity per vehicle: 1
- Overall length: 23 in
- Body: 13 in long, 9 in wide, 7 in high, oval shape
- Inlet: 1, offset, 2 bolt welded flange, 1.625 in offset
- Outlet: 1, offset, tip
- Outlet diameter: 2.75 in (outside diameter)
Build and materials
- Type: Reflection muffler
- Material: Stainless steel
- Finish: Natural
- Hanger: included
- Condition: New
- Warranty: Walker limited lifetime warranty
- Country of origin: United States
In the box
One muffler with hanger; the fitment calls for one per vehicle.
Installation notes
- Direct-fit bolt-on replacement with hangers, brackets and pipe routings.
- Does not require specialized fabrication or welding.
Interchange: 44300FG050 · 44300FG180 · 44300FG380 · 44300SC010 · 44300SC030 · 44300SC130 · 44300SC150 · 44300SC152 · 44300SC170 · 44300SC190 · 44300SC191 · 44300SC192
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Will Walker Exhaust 21745 work as a 2012 Subaru Forester muffler on the H4 2.5L?
Yes. Walker Exhaust 21745 is listed for the 2009-2013 Subaru Forester H4 2.5L, a range that includes 2012.
Are Walker Exhaust mufflers like this one made of stainless steel?
Yes. Walker Exhaust 21745 is a Quiet-Flow SS muffler built entirely of stainless steel, down to the bushings and partitions.
What is the outlet diameter on this Quiet-Flow SS muffler?
The single offset outlet is 2.75 in outside diameter and ends in a tip. The inlet is a 2 bolt welded flange with a 1.625 in offset.
Does this Quiet-Flow SS muffler need welding to install?
No. It bolts in place as a direct fit, so specialized fabrication or welding is not required.
Does Walker 21745 replace number 44300SC010?
Yes. 44300SC010 is one of the interchange numbers for Walker Exhaust 21745, along with 44300FG050 and others on the Interchange line.
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