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Walker RV Mufflers 21470

Muffler, Mega-Flow RV, 3 1/2 in. Inlet/3 1/2 in. Outlet, Steel, Natural, Each

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Manufacturer's Part Number: 21470
Part Type: Mufflers
Product Line: Walker RV Mufflers
Summit Racing Part Number: WLK-21470

UPC: 086387214704
Case Shape: Round
Inlet Diameter (in): 3.500 in.
Inlet Quantity: One
Inlet Location: Center
Outlet Diameter (in): 3.500 in.
Outlet Quantity: One
Outlet Location: Center
Internal Construction: Perforated tube
Muffler Material: Steel
Muffler Finish: Natural
Case Length (in): 31.000 in.
Case Outside Diameter (in): 7.000 in.
Overall Length (in): 37.000 in.
Outlet Style: Straight tip
Quantity: Sold individually.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Increase fuel economy and performance with these Walker RV mufflers. Their proven performance helps you tackle steep climbs with increased engine power when it's needed most, and the RV mufflers' flow-through design reduces engine backpressure without affecting acoustics.

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Most Helpful Reviews Review this Product

4 Customer Reviews for Dynomax Performance 21470 - Walker RV Mufflers

Average Customer Review

5 Star

(3)

4 Star

(1)

3 Star

(0)

2 Star

(0)

1 Star

(0)
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Like it

Summit RacingSummit Racing Verified Purchase

Installed this on my 92 Ford 7.3 IDI Turbo. Working great so far and I like how it sounds

0 of 0 found this review helpful.

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Reviewer: SHERWIN from KS

Date: August 28, 2014

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Walker BTM 21470

Summit RacingSummit Racing Verified Purchase

Perfect straight through replacement for your old stock muffler. Truck sounds way better, but not to loud. Highly recommend. Not a DIY, let your muffler shop install it.

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Reviewer: GARRY from ID

Date: July 28, 2014

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Good product

Summit RacingSummit Racing Verified Purchase

This is a great muffler. I put it on my powerstroke, and it has a excellent deep tone to it, and definitely has less restriction then the stock muffler. It is a good, cheap alternative to 4" exhaust.

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Reviewer: MICHAEL from WA

Date: March 29, 2014

Great muffler

Summit RacingSummit Racing Verified Purchase

Improved flow over stock muffler dramatically. Considerably louder but I like it.

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Reviewer: RICHARD from MT

Date: March 14, 2014

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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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