Flowmaster 430402 40 Series Muffler - 3.00" Center In / 2.50" Dual Out - Aggressive Sound

by Flowmaster

Product Features

• Durable fully welded 16 gauge alumInized steel
• Aggressive and powerful exterior exhaust tone
• Notable Interior resonance
• Excellent street, strip and off road application
• No Internal packIng to blowOut

Product Details

Data Sheet [118kb PDF]

• Item Weight: 10 pounds
• Shipping Weight: 10.4 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B000182DO2
• Item model number: 430402
• Average Customer Review: 4.0 out of 5 stars  See all reviews (4 customer reviews)
• Amazon Best Sellers Rank: #12,093 in Automotive (See Top 100 in Automotive)
  • #32 in Automotive > Performance Parts & Accessories > Exhaust System > Mufflers
  • #38 in Automotive > Replacement Parts > Exhaust & Emissions > Mufflers

Product Description

The OrigInal 40 Series muffler delivers an aggressive exterior and Interior tone. If you're lookIng for that origInal, Flowmaster sound this is the muffler is for you. Constructed of 16 gauge alumInized steel and fully MIG welded for maximum durability.

Customer Reviews

Most Helpful Customer Reviews

2 of 3 people found the following review helpful:

2.0 out of 5 stars Not what I was looking for, August 31, 2010

By 

Kyle Caraway - See all my reviews

This review is from: Flowmaster 430402 40 Series Muffler - 3.00" Center In / 2.50" Dual Out - Aggressive Sound (Misc.)

After a lot of research, I was originally going to go with the 50 series, but I ended up second guessing it and choosing the 40 at the muffler shop. I knew that was the wrong decision for my 4.3L V6 Chevy S-10 on the way home. The sound from the outside at idle and with a blip of the throttle is deep and mellow. I wouldn't call it overly loud at idle, and I actually did get some complements on the sound. Where I never quite got on board with it was the resonance inside the cab. It is hard to describe, but while cruising, the constant "bwwahhhhh" sound was just the right pitch to get on my nerves in that small space. I was late to a friend's house once, so I was rushing to get there. When I arrived, he told me that he heard me come around the bend a mile up the road! This was reinforced by the fact that several people have told me through the years that they could always hear me coming and I experienced it myself when people returned the truck after borrowing it. If I had it to do over again, I'm would definitely have gone with something quieter for sure. Something that didn't make it so that you have to yell to be heard by your passenger and had a better sound at cruising speeds or while under load. On the other hand, if you've got a teenager, and you want to know when they come and go, get these! Part of my issues could have been due to the small truck that it was on, and the fact that the muffler had to be located directly behind the passenger seat. Just to be thorough, I had a single pipe into the 40, and two coming out. The pipes exited straight out the back, on either side of the license plate (halfway between the edge of the plate and the corner of the bumper).

4.0 out of 5 stars good sound through the throttle, July 15, 2011

By 

george - See all my reviews

This review is from: Flowmaster 430402 40 Series Muffler - 3.00" Center In / 2.50" Dual Out - Aggressive Sound (Misc.)

I had a 40 series on my 03 Dodge 2500 Hemi and it sounded great. From idle to wide open it was a good growl with a good bark when you hit it. You can definitely hear the motor all the time. I had my system replaced and went with a 50 series and I think its alot quieter in the cab and out. If you like to hear your motor through the throttle get the 40, if you want a little sound but still cruises quiet get the 50.

5.0 out of 5 stars muffler, October 11, 2010

By 

barbbec - See all my reviews

Amazon Verified Purchase

This review is from: Flowmaster 430402 40 Series Muffler - 3.00" Center In / 2.50" Dual Out - Aggressive Sound (Misc.)

MY GRANDSON WAS VERY PLEASED WITH THE FLOWMASTER I ORDERED WE RECEIVED IT ON FRI 10/08/10 AND HE HAD IT INSTALLED ON SAT 10/09/10. THIS PRODUCT WAS 100% AS DESCRIBED AND MY GRANDSON LOVES IT. THANKS FOR THE FAST SHIPPING AND EXCELLANT PRICE.