Special discount price: enter JUNE at checkout for 9% off. *
close promo banner icon

cat-back

Flowmaster - American Thunder Cat Back Exhaust System (817662)

$618.02

$807.87

You save: $189.85 (24%) off MSRP

Ships directly from manufacturer
Check to see if this fits your vehicle

This part fits

  1. 1979 Chevrolet Corvette
  2. 1979 Chevrolet Corvette 5.7L V8 cid:350
  3. 1978 Chevrolet Corvette 5.7L V8 cid:350
  4. 1977 Chevrolet Corvette 5.7L V8 cid:350
  5. 1976 Chevrolet Corvette 5.7L V8 cid:350
  6. 1975 Chevrolet Corvette 5.7L V8 cid:350
Authorized Dealer

About this product

Part #: 817662

Flowmaster introduces their new stainless steel American Thunder cat-back system for the 1975-1979 Chevrolet Corvettes with 5.7L, V8 engines. This fully mandrel bent 2.50 system features 50 Series Delta Flow mufflers and 3.00 polished stainless steel tips. As an American Thunder system it will typically produce a moderate interior and exterior sound level with all of the performance benefits that you would expect from Flowmaster. Constructed in durable 409S stainless steel, the system is covered by Flowmaster's Lifetime Limited Warranty. All necessary parts and hardware are included for a great fitting installation. Note: To complete the system for these applications, Flowmaster also offers a direct fit converter, part # 2010036 (49 state legal), and manifold Y-pipe # 81087.

More Details

2WD/4WDRWD
Bullet Point #1Stainless Steel Construction
Bullet Point #2Dyno Tuned For Maximum Performance
Bullet Point #3Patented Delta Flow Technology
Bullet Point #4Lifetime Limited Warranty
Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Rear Exit
Exit StyleTurn Down
Heat ShieldNo
Heat Shield AttachedNo
Inlet Diameter2.5
Inlet Diameter (in)2.5
Inlet Inside Diameter (in.)2.5
MaterialStainless Steel
Muffler Count2
Muffler Part NumberKit Only
Muffler Quantity2
Muffler Series50 Series Delta Flow
Outlet Diameter2.5 in.
Outlet Diameter (in)2.5
Outlet Outside Diameter (in.)3
Single DualDual
Single or DualDual
Sound LevelModerate Sound
System TypeCat-back System
System TypeCat Back
TitleFlowmaster 817662 Cat-Back System 409S - Dual Rear Exit - American Thunder - Moderate Sound
Tubing Diameter2.50 in.
Tubing Diameter (in)2.5
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

Kaelen Lillard

132

Kaelen Lillard
1994 Lexus LS 400
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I wanted the car to have a rumble but not too loud.
Is this your first time buying from this brand? Did you consider other brands?
Yes, I did consider Magnaflow.
View on Kaelen's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
It honestly sounds great
Is this your first time buying from this brand? Did you consider other brands?
No,had a flowmaster on my other truck sounds great
View on Ronnie's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
To make my camaro actually have a little bark.
Is this your first time buying from this brand? Did you consider other brands?
First time
Was it easy to install? Any installation tips that will help others?
Professionally done
Once you've had a chance to use the product, did it meet your expectations?
Yes. Made the car sound amazing.
View on Jarrett's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Needed a new exhaust system because the stock exhaust was completely rusted together
Is this your first time buying from this brand? Did you consider other brands?
First time buying considered magnaflow but more hp in flowmaster
View on Zachary's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
performance header, fabricated test pipe, and a 3" from test pipe back
View on Jacques's build

TOP RATED Flowmaster Exhaust

  • Flowmaster - FlowFX Cat-Back Exhaust System  photo
    MFR# 717871Flowmaster - FlowFX Cat-Back Exhaust System
    $629.95$699.95
    Save $70.00 (10%) off MSRP
  • Flowmaster - FlowFX Cat-Back Exhaust System  photo
    MFR# 717880Flowmaster - FlowFX Cat-Back Exhaust System
    $249.95$277.95
    Save $28.00 (10%) off MSRP
  • Flowmaster - FlowFX Cat-Back Exhaust System  photo
    MFR# 717887Flowmaster - FlowFX Cat-Back Exhaust System
    $459.95$510.54
    Save $50.59 (10%) off MSRP
  • California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

    *Some manufacturer restrictions apply.

    About Flowmaster

    Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

    Benefits of adding this mod

    An upgraded exhaust system is one of the easiest modifications that offers an immediate, noticeable performance improvement. Whether you’re cruising an M3 or modding a diesel truck, an upgraded exhaust will open up the restrictive factory system, allowing your engine to breathe better and deliver peak power! From lighter weight exhaust headers to improved cat-back systems, to better sounding mufflers, modifying your exhaust setup is a great place to express the character of your ride in a unique and cost effective way. Whatever you’re looking for in a modified exhaust system, we can provide the absolute best systems to make your vision a reality.

    shipping-worldwide-jpg

    we ship worldwide!

    Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

    + FREE GROUND SHIPPING ON U.S. ORDERS OVER $99
    International shipping icon
    Have a question? Ask an Expert!

    Finding the best parts can be tricky

    - but not to worry! Our team of experienced American Muscle, JDM, Euro, and off-road tuners are ready to answer your questions (as long as we’re not in the garage wrenching on our own builds).

    chat-iconLive Chat
    Ask our expert tuners anything!
    call_iconCall Us
    1 (800) 959-4304
    featured vehicle testimonial imagequote icon

    Wheelwell wants to be the new online hub for car parts and accessories.

    author testimonial image
    featured vehicle testimonial imagequote icon

    Wheelwell helps you organize all your stuff for your car, I’ve loaded all my cars on Wheelwell and you can see all the parts I’ve put in them and that may help you make a decision with your own build.

    author testimonial image

    Matt Farah

    Smoking Tire / The Drive

    featured vehicle testimonial imagequote icon

    Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

    James M.

    Ford Focus ST

    featured vehicle testimonial imagequote icon

    Your customer service is wonderful. Thank you for taking care of this. My review will express all. Thank you!

    Wallace R

    Chevrolet Silverado 1500