Flowmaster 17742 American Thunder Header Back Exhaust System
by Flowmaster
SKU ds_BDXN_17742
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Original price
$1,412.43
-
Original price
$1,412.43
Original price
$1,412.43
$1,412.43
$1,412.43
-
$1,412.43
Current price
$1,412.43
Availability:
Only 2 left!
Description
Flowmaster's American Thunder Crossmember-back exhaust system for the 73-87 GM C10/C20, ½ and 3/4 ton, 2WD pickup truck is perfect for the person looking for moderate to aggressive sound levels with all of the performance benefits that you would expect from Flowmaster. This Crossmember-back DOR/DOS (Dual Out Rear, Dual Out Side) system features dual Super 44 Series mufflers, 2.50" mandrel bent aluminized tubing and accommodates both dual and single exhaust crossmembers. This system is routed in a fashion that accommodates both long and short wheelbases with automatic or manual transmissions, and provides adequate clearance for substantially lowered vehicles. The exhaust system is covered by Flowmaster's 3 Year Limited Warranty. This system is not emissions compliant on vehicles that were originally equipped with catalytic converters. Note: This system is not designed as a direct bolt-on and will require the user to fabricate pipes to connect to manifolds or headers.
Resources
Installation InstructionsSpecifications
| Color | Black |
| Description_ASC | Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations |
| Description_ASM | 1973 to 1987 Chevrolet and GMC C10 (1/2 ton) and C20 (3/4 ton) Pickup Trucks; 2 Wheel Drive Only. Not emissions compliant on vehicles originally equipped with a catalyst system. |
| Description_DEF | Exhaust System Kit |
| Description_DES | American Thunder Header Back Exhaust System |
| Description_EXT | American Thunder Header Back Exhaust System; Dual; Dual Rear Same Side Exit; Incl. 2.5 in. Tubing/Super 44 Series™ Mufflers/H-Pipe/Hdw; Tips Not Included; Aluminized Steel; |
| Description_FAB | Dual Out Rear Exit |
| Description_FAB | Dyno Tuned for Maximum Performance |
| Description_FAB | Famous Flowmaster sound |
| Description_FAB | Header Back System |
| Description_FAB | Incl. Hangers and Hardware For Easy Installation |
| Description_FAB | Limited Lifetime Warranty |
| Description_FAB | Made in the USA |
| Description_FAB | Moderate Exterior Exhaust Tone |
| Description_FAB | Multiple Exit Options |
| Description_FAB | Patented Delta Flow Technology |
| Description_FAB | Premium Flowmaster Quality |
| Description_INV | 73-74 GM C10/C20 HEADER BACK AMT |
| Description_KEY | 17742; header-back; american thunder kit; exhaust system |
| Description_LAB | Made In Logo |
| Description_MKT | Flowmaster's American Thunder Crossmember-back exhaust system for the 73-87 GM C10/C20, ½ and 3/4 ton, 2WD pickup truck is perfect for the person looking for moderate to aggressive sound levels with all of the performance benefits that you would expect from Flowmaster. This Crossmember-back DOR/DOS (Dual Out Rear, Dual Out Side) system features dual Super 44 Series mufflers, 2.50" mandrel bent aluminized tubing and accommodates both dual and single exhaust crossmembers. This system is routed in a fashion that accommodates both long and short wheelbases with automatic or manual transmissions, and provides adequate clearance for substantially lowered vehicles. The exhaust system is covered by Flowmaster's 3 Year Limited Warranty. This system is not emissions compliant on vehicles that were originally equipped with catalytic converters. Note: This system is not designed as a direct bolt-on and will require the user to fabricate pipes to connect to manifolds or headers. |
| Description_MKT | This American Thunder exhaust system was specially designed for 1973-1974 Chevrolet and GMC C10 and C15 1/2 ton and 3/4 ton 2wd trucks and is perfect for the person looking for moderate to aggressive interior and exterior sound levels. The crossmember-back exhaust system comes complete with a built-in H-pipe crossover, all mandrel-bent 2.50-inch aluminized steel tubing, a pair of Super 44 Series performance mufflers and your choice of tailpipe exits. Either dual out rear under the bumper for a muscular look or dual out the sides behind the rear tires for that classic truck look. The system includes all hardware necessary for installation and is designed to accommodate both long and short wheelbases, with either an automatic or manual transmission and provides adequate clearance for substantially lowered vehicles. The exhaust system is covered by our 3-year Limited Warranty. Notes: Does Not include exhaust tips, header reducer cones or downpipes for factory manifolds. |
| Description_SHO | Exhaust System Kit |
| Exhaust Series | American Thunder |
| Exhaust Type | Dual |
| Exit Position | Dual Rear Same Side |
| Exit Style | Straight |
| height | 17.7 |
| Inlet Diameter | 2.500 in. |
| Inlet Inside Diameter | 2.500 in. |
| length | 63.9 |
| LTL | N |
| Material | Aluminized Steel |
| Mount Type | Flanged |
| Muffler Count | 2 |
| Muffler Series | Super 44 |
| Muffler Type | Welded Baffle |
| Outlet Diameter | 2.500 in. |
| Outlet Outside Diameter | 2.500 in. |
| Shape | Oval |
| Single or Dual | Dual |
| Sound Level | Moderate/Aggressive |
| System Type | Header Back |
| Tail Pipe Diameter | 2.500 in. |
| Tip Diameter | N/A |
| Title | Flowmaster 17742 Header-back 409S - American Thunder Kit - DOR/S - Mod/Agg Sound |
| Tubing Diameter | 2.500 in. |
| Tubing Material | Aluminized Steel |
| WARNING CA Proposition 65 | No |
| weight | 77.55 |
| width | 15.8 |
