Exhaust Muffler for 2003-2017 Toyota 4Runner & More - Walker 56177

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$216.99
MPN: 56177
Item Package Quantity: 1
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Walker Exhaust Exhaust Muffler Assembly P/N:56177
Walker Exhaust Exhaust Muffler Assembly P/N:56177
$216.99

Quiet the drone and keep your exhaust flowing cleanly with the Walker Quiet-Flow SS Exhaust Muffler Assembly 56177. This direct-fit bolt-on assembly drops in as a replacement for the 2003-2004 Lexus GX470 and the 2003-2017 Toyota 4Runner, with a 2.5" inlet (OD) and a 2.35" outlet (OD). See the Buyer's Guide tab for engine-level fitment.

  • 100% stainless-steel construction: Walker's broad-market stainless body is built to deliver longer life than typical aluminized mufflers, and an internal drainage system reduces moisture collection.
  • Easy to install: A direct-fit bolt-on solution with factory-style hangers, brackets and pipe routings, so no specialized fabrication or welding is required.
  • Built to last: Internal partitions and mechanically joined tubes allow expansion and contraction during 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 while domed heads help reduce radiated noise for factory-style sound quality compared to straight perforated tubes.

Acoustic- and flow-tested for OE-style sound, and backed by Walker's limited lifetime warranty and the exclusive 90-Day Safe and Sound Guarantee.

Interchange: 1742050220

This part cross-references / interchanges with the following part numbers:

1742050220

Frequently Asked Questions

What vehicles does the Walker 56177 muffler fit?

It is a direct-fit replacement for the 2003-2004 Lexus GX470 and the 2003-2017 Toyota 4Runner. Check the Buyer's Guide tab to confirm your exact vehicle and engine.

What are the inlet and outlet sizes?

This assembly has a 2.5" inlet (OD) and a 2.35" outlet (OD).

Is welding required to install this muffler?

No. It is a direct-fit bolt-on solution with factory-style hangers, brackets and pipe routings, so no specialized fabrication or welding is needed.

What is the muffler body made of?

It uses 100% stainless-steel construction, which Walker builds to provide longer life than typical aluminized mufflers, plus an internal drainage system that reduces moisture collection.

Does this muffler come with a warranty?

Yes. It is backed by Walker's limited lifetime warranty and the exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.