Quiet the exhaust and keep your Honda Civic breathing freely with the Walker Quiet-Flow SS Exhaust Muffler Assembly 54668. It drops in as a direct-fit bolt-on replacement for the 2006-2011 Honda Civic, with a 1.75" (OD) inlet and 2.25" (OD) outlet, so no cutting, welding, or specialized fabrication is required.
Corrosion-resistant stainless steel: A 100% stainless-steel body delivers longer life versus aluminized mufflers, while an internal drainage system helps reduce moisture collection.
Easy to install: A direct-fit bolt-on design with factory-style hangers, brackets, and pipe routings for straightforward installation.
Built to last: Internal partitions and mechanically joined tubes allow expansion and contraction through temperature changes to minimize distortion, while spun-locked heads and OE-style spot welds add stability.
Premium acoustic control: OE-style louvered tubes lower noise levels and OE-style domed heads help reduce radiated noise for factory-style sound quality compared with straight perforated tubes. Acoustic- and flow-tested for OE-style sound.
Backed by Walker's limited lifetime warranty and 90-Day Safe and Sound Guarantee. See the Buyer's Guide tab for engine-level fitment on the listed 2006-2011 Honda Civic applications.
Interchange: 18307SNAA01 · 18307SNEA01 · 18307SNEA11
This part cross-references / interchanges with the following part numbers:
What vehicles does the Walker 54668 muffler fit?
It is a direct-fit replacement for the 2006-2011 Honda Civic. Check the Buyer's Guide tab to confirm the engine-level fitment for your specific vehicle.
What are the inlet and outlet sizes?
This muffler assembly has a 1.75" outside-diameter inlet and a 2.25" outside-diameter outlet, as listed in the Walker specifications.
Is welding required to install this muffler?
No. It is a direct-fit bolt-on replacement with OE-style hangers, brackets, and pipe routings, so no specialized fabrication or welding is needed.
What is the muffler body made of?
The Quiet-Flow SS body is 100% stainless steel, which Walker states delivers longer life versus aluminized mufflers, and it includes an internal drainage system to reduce moisture collection.
What warranty comes with this muffler?
It is backed by Walker's limited lifetime warranty and the 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
