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Flowmaster 40 Series Chambered Muffler 2.5" IN (Dual) / OUT(Dual) 425404

Authorized Dealer - 60 Day Free Returns 100% +Feedback
Boost Projects
(58018)
Registered as a business seller
US $99.95
Approximately£74.84
or Best Offer
Condition:
New
More information - About this item condition
More than 10 available60 sold
People want this. 109 people are watching this.
This one's trending. 60 have already sold.
Postage:
Free Standard Shipping.
Located in: San Diego, California, United States
Delivery:
Estimated between Thu, 31 Jul and Sat, 2 Aug to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the delivery service selected, the seller's delivery history and other factors. Delivery times may vary, especially during peak periods.
Returns:
60 days return. Seller pays for return postage.
Payments:
    Diners Club

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Seller assumes all responsibility for this listing.
eBay item number:263529502413
Last updated on 24 Jul, 2025 21:06:59 BSTView all revisionsView all revisions

Compatibility

This part is compatible with 47 vehicle(s)
YearMakeModelTrimEngineNotes
1993ChevroletC1500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993ChevroletC2500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993ChevroletK1500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993ChevroletK2500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993GMCC1500Sierra Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993GMCC1500Sierra Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993GMCK1500Sierra Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1993GMCK1500Sierra Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992ChevroletC1500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992ChevroletC2500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992ChevroletK1500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992ChevroletK2500 SuburbanBase Sport Utility 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992GMCC1500Sierra Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992GMCC1500Sierra Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992GMCK1500Sierra Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1992GMCK1500Sierra Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1991GMCC1500Sierra Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1991GMCC1500Sierra Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1991GMCC2500Sierra Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
1991GMCC2500Sierra Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
Portions of the information contained in this table have been provided by boostprojects

Item specifics

Condition
New
Body Width (in)
9.5
Shape
Oval
Type of Muffler
Chambered
Custom Bundle
No
Inlet Position
Dual
Muffler Type
Chambered
Manufacturer Warranty
3 Year
Inlet Diameter
2.5in.
Body Height (in)
4
Sound Level
Aggressive Sound
Non-Domestic Product
No
Mounting Style
Pipe Connection
Emission Code
5
Outlet Diameter
2.5in.
Color
Black
Fitment Type
Performance/Custom
Manufacturer Part Number
425404
Muffler Series
Original 40 Series
Material
Aluminized Steel
Modified Item
No
California Prop 65 Warning
Cancer & Reproductive Harm- www.P65Warnings.ca.gov
Brand
Flowmaster
Interchange Part Number
Street Chambered Mufflers / 40 Series, For Chevy GMC Dodge Ford Toyota Jeep, For Silverado Sierra Ram F250 F350 Super Duty
Product Type
Street Mufflers
Fitment
Universal
Outlet Position
Dual
Body Length (in)
13
UPC
700042026029

Item description from the seller

Seller business information

I certify that all my selling activities will comply with all EU laws and regulations.
About this seller

Boost Projects

100% positive Feedback263K items sold

Joined Jan 2011
Usually responds within 24 hours
Registered as a business seller
Welcome to our eBay Store..Boost Projects brings the fastest service to the racing enthusiasts by providing whatever you need for your project from the sources of all around the world for Imports, ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable postage cost
5.0
Delivery time
5.0
Communication
5.0

Seller Feedback (57,951)

All ratings
Positive
Neutral
Negative
  • a***b (161)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Sadly I had to return the item because it didn't fit but the shipping was faster than expected and the seller has been great to work with. Thank you!
  • i***n (488)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Very Fast Shipping and sounds great Thanks
  • h***n (21)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Fit perfect sounds good
See all Feedback

Product ratings and reviews

4.9
32 product ratings
  • 31 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Most favourable review

    BMW growl

    My 325i was so quiet, I couldn't tell if I was in 3rd or 5th in town. ( other than tach) 40 series sounds great, no raspy tin can like most imports. Good throaty growl and very little drone at highway speeds.

    Verified purchase: YesCondition: NewSold by: mygarageautoparts

  • Good sound, not super loud.

    Put this one a 2002 Sierra 6.0. Had duals ran out. Sounds great. Good idle rumble. Good under load as well. Not super aggressive but loud enough to hear it. Slight drone with the music off.

    Verified purchase: YesCondition: NewSold by: performance-curve

  • Perfect

    This mufler is just what my husband wanted. Our old flowmaster just got old and time for a new one. This is just what he needed. It's the same as his original and sounds great. Definitely recommend!

    Verified purchase: YesCondition: NewSold by: maxflowmotorsports

  • Love flow master sound but one draw back...

    Love flow master sound but one draw back , I’ve had two where the baffles on the inside came apart and started rattling

    Verified purchase: YesCondition: NewSold by: performance-curve

  • Perfect fit and sound

    Installed today perfect sound on my Tundra I love it

    Verified purchase: YesCondition: NewSold by: partsdriven