Description

Muffler – Original 40 – 2.5 in Dual Inlet – 2.5 in Dual Outlet – 13 x 9.5 x 4 in Oval Body – 19 in Long – Steel – Black Paint – Universal – Each

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors. Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

About FLOWMASTER

Flowmaster started out over 30 years ago, developing mufflers and exhaust systems for race cars to reduce noise without impacting power output. Today, Flowmaster has become one of the most respected names in the automotive aftermarket. With a full line of exhaust systems and components available for a huge selection of vehicles, they are known for systems that deliver an aggressive sound and noticeable power increases over stock.

Reviews

There are no reviews yet.

Be the first to review “FLOWMASTER 40 Series Performance Muffler 425404”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    QUARTER MASTER Starter Reverse Mount 114260

    SKU: QTR114260
    Product information
    • Weight10.87 lbs
    • Dimensions10.9 × 6.8 × 6.4 in
    • Color

      Natural

    • Finish

      Natural

    • Quantity

      Each

    • Weight

      10 lbs

    • Cat 3.5

      Starters

    Details...
    Original price was: $512.00.Current price is: $465.14.Add to cart
    Original price was: $512.00.Current price is: $465.14.
    Quantity Only 7 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    RANCHO Shock Bushing RS980

    SKU: RAN980
    Product information
    • Weight0.09 lbs
    • Dimensions6.2 × 5.2 × 1.35 in
    • Quantity

      Pair

    • Material

      Polyurethane

    • Color

      Red

    • Finish

      Natural

    • Shape

      Hourglass

    Details...
    Original price was: $17.09.Current price is: $14.86.Add to cart
    Original price was: $17.09.Current price is: $14.86.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    LOKAR 350-V Rect LED Boot Indicator/Boot CINB-1764

    SKU: LOKCINB-1764
    Product information
    • Weight0.83 lbs
    • Dimensions8.75 × 6.2 × 2.15 in
    • Quantity

      Kit

    • Mounting Location

      Floor Shifter Bezel

    • Application Specific

      Yes

    • Style

      Bezel Style

    • Shift Pattern

      PRND21

    Details...
    Original price was: $146.25.Current price is: $132.95.Add to cart
    Original price was: $146.25.Current price is: $132.95.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    TAYLOR/VERTEX Weather Proof Toggle Switch 1018

    SKU: TAY1018
    Product information
    • Weight0.125 lbs
    • Dimensions5.95 × 3 × 0.85 in
    • Color

      Natural

    • Quantity

      Each

    • Material

      Aluminum

    • Finish

      Natural

    • Intended Application

      Universal

    Details...
    Original price was: $16.00.Current price is: $13.71.Add to cart
    Original price was: $16.00.Current price is: $13.71.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    TERAPUMP Battery Powered Transfer Pump TRFA01 20175

    SKU: TER20175
    Product information
    • Weight1.553 lbs
    • Dimensions14 × 6 × 3.5 in
    • Material

      Plastic

    • Color

      Gray / Red

    • Finish

      Natural

    • Quantity

      Each

    • Manual / Electric

      Electric

    Details...
    Original price was: $90.19.Current price is: $81.99.Add to cart
    Original price was: $90.19.Current price is: $81.99.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    Ti22 PERFORMANCE 600 Chain Master Link TIP3872

    SKU: TIP3872
    Product information
    • Weight0.035 lbs
    • Dimensions4.05 × 2.6 × 1.2 in
    • Material

      Steel

    • Color

      Gold

    • Finish

      Coated

    • Quantity

      Each

    • Type

      Master Link

    Details...
    Original price was: $16.79.Current price is: $13.99.Add to cart
    Original price was: $16.79.Current price is: $13.99.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HALTECH Haltech Stand Alone IC-7 Classic Dash Kit HT-067014

    SKU: HTHHT-067014
    Product information
    • Weight8.075 lbs
    • Dimensions14.65 × 14.3 × 12.9 in
    • Product Line

      iC-7 Classic

    • Quantity

      Kit

    • Fittings Included

      Yes

    • Universal Dash Kit Included

      Yes

    • Data Logger

      Yes

    Details...
    Original price was: $2,156.25.Current price is: $1,875.00.Add to cart
    Original price was: $2,156.25.Current price is: $1,875.00.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HOWE Spindle Impala Mod Left RP970L

    SKU: HOWRP970L
    Product information
    • Weight15.315 lbs
    • Dimensions13.55 × 13.15 × 9.8 in
    • Quantity

      Each

    • Variant

      Yes

    • Mounting Style

      GM B-Body

    • Variant Group

      Spindles44

    • Variant Column

      Driver / Passenger Side

    Details...
    Original price was: $210.45.Current price is: $191.32.Add to cart
    Original price was: $210.45.Current price is: $191.32.
    Quantity Only 7 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HOWE Throw Out Hyd. Coupler For 8288 8290

    SKU: HOW8290
    Product information
    • Weight0.22 lbs
    • Dimensions3.65 × 1.7 × 0.9 in
    • Material

      Steel

    • Color

      Zinc

    • Finish

      Plated

    • Quantity

      Kit

    • Fitting A End 1 Size

      1/8 in NPT

    Details...
    Original price was: $36.74.Current price is: $33.40.Add to cart
    Original price was: $36.74.Current price is: $33.40.
    Quantity Only 9 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WINTERS Quick Change Gears 8532

    SKU: WIN8532
    Product information
    • Weight6.625 lbs
    • Dimensions8.9 × 4.9 × 1.9 in
    • Spline

      10.0

    • Set Number

      32

    • Gear 1 Tooth Count

      19.0

    • Gear 2 Tooth Count

      27.0

    • 4:12 Ring And Pinion Low Ratio

      2.9

    Details...
    Original price was: $128.16.Current price is: $116.51.Add to cart
    Original price was: $128.16.Current price is: $116.51.Add to wishlist

    36