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Flowmaster American Thunder Cat-Back Exhaust System 17473

Flowmaster American Thunder Cat-Back Exhaust System 17473
Flowmaster American Thunder Cat-Back Exhaust System 17473
$1,244.99 ea
NEWARRIVING SOONEstimated Ship Date 07/16/2025 (If Ordered Today)5 Available from HOLLEY PERFORMANCE PRODUCTS as of 06/28/2025
Model: 4005019
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
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For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster® Cat-back exhaust system provides. The American Thunder exhaust system is constructed from mandrel-bent 2.50-inch aluminized steel flowing into a specially designed Super 40™ Series muffler for a moderately aggressive exterior tone and a moderate interior tone. The system finishes with dual 2.50-inch tailpipes and polished 3.00-inch stainless steel tips, and your choice of tailpipe exits either straight out the back for a muscular look, or exiting behind the rear wheels which is ideal for towing. The system uses the factory hanger locations for an easy installation and is covered by our 3-year Limited Warranty. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Comes with our 3-year Limited Warranty. For those who prefer full stainless steel construction and a Lifetime Limited Warranty, check out exhaust system part# 817473. Notes: Fits Fits 4-wheel drive only with extended cab/short bed configuration.
Features:
  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Aluminized Steel Tubing
  • Moderately Aggressive Exterior Exhaust Tone
  • Dyno Tuned for Maximum Performance
  • Super 40 Series Performance Muffler
  • Uses the Factory Hanger Locations
  • Polished 304 Stainless Steel Tips
  • Quick and Easy Installation
  • 3-year Limited Warranty
Fits 1993-1995 Chevrolet Silverado and GMC Sierra 1500 truck with 5.0L or 5.7L engine, using a 3.00-inch inch flanged catalytic converter. Fits 4 wheel drive only with extended cab/short bed configuration.
Installation Notes:
Fits 1993-1995 Chevrolet Silverado and GMC Sierra 1500 truck with 5.0L or 5.7L engine, using a 3.00-inch inch flanged catalytic converter. Fits 4 wheel drive only with extended cab/short bed configuration.
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance 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. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
17473_instructions.pdf3.29MB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Chevrolet C1500 Base 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Base 1995 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Cheyenne 1993 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Cheyenne 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Cheyenne 1995 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Silverado 1993 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Silverado 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet C1500 Silverado 1995 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Base 1994 5.0L / 305 / V8
5.7L / 350 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Base 1995 5.0L / 305 / V8
5.7L / 350 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Cheyenne 1993 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Cheyenne 1994 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Cheyenne 1995 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Silverado 1993 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Silverado 1994 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
Chevrolet K1500 Silverado 1995 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SLE 1993 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SLE 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SLE 1995 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SLT 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SLT 1995 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SLX 1993 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SL 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra SL 1995 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC C1500 Sierra 1993 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SLE 1993 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SLE 1994 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SLE 1995 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SLT 1994 5.0L / 305 / V8 With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SLT 1995 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SLX 1993 5.0L / 305 / V8
5.7L / 350 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SL 1994 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra SL 1995 5.7L / 350 / V8
5.0L / 305 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.
GMC K1500 Sierra 1993 5.0L / 305 / V8
5.7L / 350 / V8
With 3.00 Flanged Cat Converter. Extended cab/Short bed - 4 Wheel Drive only.

Specifications:

2WD/4WD 4WD
California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series American Thunder
Exit Position Dual Out Rear / Dual Out Side
Heat Shield No
Inlet Diameter (in) 3
Material Aluminized Steel
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Super 40 Series
Outlet Diameter (in) 2.5
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Cat-back
Tip Diameter (in) 3
Tip Quantity 2
Tubing Diameter (in) 2.5
Warranty Time 36 Months

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