855.444.6872 Contact Us Mon-Sat 10a-6p
DRIVEN BY CARE
Home

Flowmaster American Thunder Crossmember-Back Exhaust System 817940

Flowmaster American Thunder Crossmember-Back Exhaust System 817940
Flowmaster American Thunder Crossmember-Back Exhaust System 817940Flowmaster American Thunder Crossmember-Back Exhaust System 817940Flowmaster American Thunder Crossmember-Back Exhaust System 817940Flowmaster American Thunder Crossmember-Back Exhaust System 817940Flowmaster American Thunder Crossmember-Back Exhaust System 817940Flowmaster American Thunder Crossmember-Back Exhaust System 817940Flowmaster American Thunder Crossmember-Back Exhaust System 817940
$1,318.99 ea
NEWARRIVING SOONEstimated Ship Date 05/17/2024 (If Ordered Today)8 Available from HOLLEY PERFORMANCE PRODUCTS as of 04/26/2024
Model: 4016809
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 3
This Flowmaster American Thunder dual exhaust system is specifically designed for 1967-1972 Chevrolet and GMC K10, K15/K1500, K20, and K25/K2500 4wd trucks with V8 engines. The system is perfect for the person looking for an aggressive to moderate interior and exterior sound level. Starting at the crossmember-back, the exhaust comes complete with a built-in H-pipe crossover for better exhaust scavenging, all mandrel-bent 2.50-inch stainless steel tubing, a pair of Super 44 Series performance mufflers, and your choice of three tailpipe exits (Turndown behind rear tires, side exit behind rear tires, or straight out the back under the bumper). The system includes all hardware necessary for installation and is covered by our Lifetime Limited Warranty. Fits both short and long wheelbase trucks.
Features:
  • Crossmember-Back Design Works with Stock Manifolds or Headers, Allowing More Application Options
  • 16-Gauge, 2.50-Inch 409 Stainless Steel Pipes add Durability and Strength
  • Super 44 Mufflers Deliver Increased Performance and an Aggressive to Moderate Sound Level
  • Three Different Tailpipe Exit Options Allow You to Tailor the Look of the Kit to Your Style
  • Mandrel-Bent Pipes Help to Maximize the Exhaust Flow for Better Performance
  • H-Pipe Style Crossover Helps Exhaust Gas Scavenging and Reduces Drone
  • Includes Hangers and Hardware for Installation
  • Lifetime Limited Warranty
Manifold down pipes and header reducers not included. Fits both long and short bed trucks.
Installation Notes:
Manifold down pipes and header reducers not included. Fits both long and short bed trucks.

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
817940_instructions.pdf3.92MB

Videos:

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
Chevrolet K10 Pickup Base 1967 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet K10 Pickup Base 1968 5.3L / 327 / V8
5.0L / 307 / V8
6.5L / 396 / V8
Chevrolet K10 Pickup Base 1969 5.3L / 327 / V8
5.0L / 307 / V8
5.7L / 350 / V8
6.5L / 396 / V8
Chevrolet K10 Pickup Base 1970 6.6L / 402 / V8
5.0L / 307 / V8
5.7L / 350 / V8
Chevrolet K10 Pickup Base 1971 6.6L / 402 / V8
5.0L / 307 / V8
5.7L / 350 / V8
Chevrolet K10 Pickup Base 1972 6.6L / 402 / V8
5.0L / 307 / V8
5.7L / 350 / V8
Chevrolet K20 Pickup Base 1967 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet K20 Pickup Base 1968 5.0L / 307 / V8
6.5L / 396 / V8
5.3L / 327 / V8
Chevrolet K20 Pickup Base 1969 5.0L / 307 / V8
5.7L / 350 / V8
6.5L / 396 / V8
5.3L / 327 / V8
Chevrolet K20 Pickup Base 1970 5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 402 / V8
Chevrolet K20 Pickup Base 1971 5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 402 / V8
Chevrolet K20 Pickup Base 1972 5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 402 / V8
GMC K15/K1500 Pickup Base 1967 4.6L / 283 / V8
5.3L / 327 / V8
GMC K15/K1500 Pickup Base 1968 6.5L / 396 / V8
5.0L / 307 / V8
5.3L / 327 / V8
GMC K15/K1500 Pickup Base 1969 6.5L / 396 / V8
5.7L / 350 / V8
5.0L / 307 / V8
GMC K15/K1500 Pickup Base 1970 6.6L / 402 / V8
5.7L / 350 / V8
5.0L / 307 / V8
GMC K15/K1500 Pickup Base 1971 6.6L / 402 / V8
5.7L / 350 / V8
5.0L / 307 / V8
GMC K15/K1500 Pickup Base 1972 6.6L / 402 / V8
5.7L / 350 / V8
5.0L / 307 / V8
GMC K25/K2500 Pickup Base 1967 5.3L / 327 / V8
GMC K25/K2500 Pickup Base 1968 5.0L / 307 / V8
5.3L / 327 / V8
6.5L / 396 / V8
GMC K25/K2500 Pickup Base 1969 5.7L / 350 / V8
5.0L / 307 / V8
6.5L / 396 / V8
GMC K25/K2500 Pickup Base 1970 5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 402 / V8
GMC K25/K2500 Pickup Base 1971 5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 402 / V8
GMC K25/K2500 Pickup Base 1972 5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 402 / V8

Specifications:

California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series American Thunder
Exit Position DOR/S
Heat Shield No
Material 409 Stainless Steel
Mount Type Uses New Hangers (Included)
Muffler Body Length (in) 13.5
Muffler Color Black
Muffler Finish Painted
Muffler Inlet Diameter (in) 2.5
Muffler Inlet Location Offset
Muffler Material 409S Stainless Steel
Muffler Outlet Diameter (in) 2.5
Muffler Overall Length (in) 19.5
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series Super 44
Muffler Shape Oval
Muffler Type Reflection
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Crossmember-back
Tip Style Not Included
Tubing Diameter (in) 2.5
Tubing Material 409S Stainless Steel

Reviews:

Write a Review
* Your Name:
* Email (This will not be displayed)
* Rating:
Comments:

Ask a question about

Flowmaster American Thunder Crossmember-Back Exhaust System 817940:
Reason for Inquiry:

Related Products

Hooker 1963-1982 Chevrolet Corvette Side Tube 65284HKR
Hooker 1963-1982 Chevrolet Corvette Side Tube 65284HKR
Model: 1028296
Condition: NEW
$1,021.99 ea
Pypes Crossmember Back w/X-Pipe Exhaust System 70-74 F-Body Split Rear Dual Exit 2.5 in Intermediate And Tail Pipe Street Pro Mufflers/Hardware Incl Tip Not Incl Exhaust SGF11S
Pypes Crossmember Back w/X-Pipe Exhaust System 70-74 F-Body Split Rear Dual Exit 2.5 in Intermediate And Tail Pipe Street Pro Mufflers/Hardware Incl Tip Not Incl Exhaust SGF11S
Model: 3170526
Condition: NEW
$1,068.99 kt
Hooker 1963-1974 Chevrolet Corvette Side Tube 50735-1HKR
Hooker 1963-1974 Chevrolet Corvette Side Tube 50735-1HKR
Model: 1002066
Condition: NEW
$971.99 ea
Scott Drake 1971-73 Mustang Exhaust (Mach1 Dual Exhaust Sys 2.25", Requires Mach1 Tips) D1ZZ-5257-TRK
Scott Drake 1971-73 Mustang Exhaust (Mach1 Dual Exhaust Sys 2.25", Requires Mach1 Tips) D1ZZ-5257-TRK
Model: 3149743
Condition: NEW
$717.99 ea $597.05
16.8%
Flowmaster American Thunder Cat-Back Exhaust System 17234
Flowmaster American Thunder Cat-Back Exhaust System 17234
Model: 3140053
Condition: NEW
$922.99 ea
Muscle Cars & Classics 2024