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Flowmaster Original 40 Series Mufflers Part #430402 Customer Reviews

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19 Customer Reviews

Flowmaster 40

Reviewed by Larry B (Garden City, KS) Reviewed for a 1990 Ford F-450/550 — Mar 01, 2014 6:20 AM

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2 of 2 people found the following review helpful.

Best thing I can say about the Flowmaster is that it was made in the USA. Good product; easy install, affordable, got to me in reasonable amount of time. Thanks

flowmaster muffler

Reviewed by Chris T (Logan, OH) Reviewed for a 2011 Dodge Ram — Apr 11, 2012 4:28 AM

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1 of 2 people found the following review helpful.

What a difference this muffler makes. My Dodge sounds great!!

40 Series

Reviewed by Ian M (Sedgwick, KS) Reviewed for a 1999 Pontiac Firebird — Jul 10, 2011 3:32 AM

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4 of 5 people found the following review helpful.

Love the sound of my 40 series. I put it on my 99 Trans Am. Sounds great and turns heads. Love it.

Love it!!

Reviewed by David S (Millersburg, PA) Reviewed for a 2010 Ford F-150 — Jun 30, 2011 6:11 PM

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5 of 7 people found the following review helpful.

This is my third flowmaster system on 3 vechiles from a 90 ranger, to a 99 f150 to a 2010 f150 love them all. Keep up the great work. Installed on a 4.6L dual out sounds awesome very deep rumble.

2007 chevy avalanche 3 INCHES IN AND DUAL 2.5 INCHES OUT.

Reviewed by christopher p (Spring Hill, FL) Reviewed for a 2007 Chevy Avalanche — Feb 07, 2009 4:23 PM

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5 of 13 people found the following review helpful.

I HAD MY 40 SERIES WELD ON AT A LOCAL MECHANICS SHOP, BUT INSTALATION WAS STRAIGHT FOWARD. I LIKE THE SOUND, BUT I THOUGHT IT WOULD BE LOUDER THAN IT WAS. NEXT FLOWMASTER WILL HAVE TO BE A RACE 40 SERIES. I DIDNT NOTICE ANY PERFORMANCE DIFFERENCE EITHER, DONT KNOW IF I WAS SUPPOSE TO THOUGH. OVER ALL WORTH THE 80 BUCKS I SPENT.

Great muffler!

Reviewed by Cody H (Buhl, ID) Reviewed for a 2000 Chevy Silverado — Jan 09, 2009 1:11 PM

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14 of 14 people found the following review helpful.

Sounds great, boosts power, gained almost a mile per gallon. Well worth the money for the Flowmaster quality.

08 GMC SIERRA

Reviewed by Garret B (Nottingham, MD) Reviewed for a 2008 GMC Sierra — Aug 15, 2008 2:15 PM

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6 of 6 people found the following review helpful.

This flowmaster opened up a little more hp and gave me that beautiful flowmaster sound at take off and on through the gears. The only down fall would be the "brown note" when just cruising at highway speeds in overdrive. If you are a daily driver of long distances you might want a little less cab noise. As far as install I kept the passenger side(stock) pipe and bent/fabricated a drivers pipe to match. It took me about 3 hours to bend, weld and hang.

f 150

Reviewed by Brady B (Lewiston, MN) — Jul 24, 2008 10:46 AM

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3 of 3 people found the following review helpful.

it went on easily for me and the truck sounds nice the muffler gives the turck the rumble i wanted

my thunder

Reviewed by hank s (Harrison, OH) Reviewed for a 2003 Ford F-150 — Apr 10, 2008 6:39 AM

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4 of 5 people found the following review helpful.

the flowmaster gives my truck the sound that turns heads when i go by. it also gives it a few more horses, its a great product that i have used on my trucks for years. I highly recommend auto anything for your purchases and the flowmaster thunder for your vehicle. regards hank

2006 F150

Reviewed by Christopher R (Belmont, ME) Reviewed for a 2006 Ford F-150 — Apr 02, 2008 12:59 PM

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3 of 3 people found the following review helpful.

I installed my Flowmaster on a 2006 F150 4X4 5.4L Champions Editoin. It sounds sweet,good rumble,deep tone & when you lug the motor a little it gets super deep toned. I would highly recommend this for anyone looking for a not to over bearing sound.

Flowmaster Original 40 Series Mufflers - 430402

Center Inlet / Dual Outlet
(19)
  • $85.86 - $92.22
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  • Part Size:
    3" inlet/2.5" outlet
  • Style:
    Aluminized
  • Part #:
    430402
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