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$630.95
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks

Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks

Header-Back Exhaust System Type, Dual Single or Dual, 2.5" Exhaust Pipe Size, RWD Drivetrain

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Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
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Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
Flowmaster 17742 American Thunder Exhaust Kit, 1973-87 GM Trucks
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We estimate this item will ship on or before August 10th.
Part # 37817742
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$630.95
$802.85
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Details

Exhaust System Type:
Header-Back
Single or Dual:
Dual
Exhaust Pipe Size:
2.5"
Exhaust Exit:
Dual Split Rear
Sound Level:
Moderate/Aggressive
Muffler(s) Included:
Yes
Muffler Quantity:
2
Muffler Connections:
Single Inlet | Single Outlet
Muffler Type:
Welded Baffle
Drivetrain:
RWD
Exhaust Tip Included:
No
Exhaust Tip Quantity:
0
Exhaust System Material:
Aluminized Steel
Exhaust System Finish:
Natural
Exhaust Pipe Color:
Natural
Muffler Body Shape:
Oval
Muffler Series:
Super 44 Series
Muffler Material:
409 Stainless Steel
Muffler Color:
Grey
Mount Type:
Flanged
Inlet Quantity:
2
Inlet Size:
2.5
Outlet Size:
2.5
Tailpipe Diameter:
2.5"
Catalytic Converter(s) Included:
No
Hardware Included:
Yes
MFG. Part #:
17742
Sold in Quantity:
Kit
GTIN Code:
700042032341
Notes:
Not Legal For Use On Vehicles Originally Equipped With Catalytic Converter

Info

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 manufactured in the USA and 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.

  • Famous Flowmaster Sound
  • Multiple Exit Options
  • Patented Delta Flow Technology
  • Made in the USA

Application

1973-1974 Chevrolet C10 Pickup
1973-1974 Chevrolet C20 Pickup
1973-1974 GMC C15/C1500 Pickup
1973-1974 GMC C25/C2500 Pickup
1975-1978 GMC C15
1975-1978 GMC C25
1975-1986 Chevrolet C10
1975-1986 Chevrolet C20
1979-1986 GMC C1500
1979-1986 GMC C2500

Notes

1973 to 1987 Chevrolet and GMC C10 (1/2 ton) and C20 (3/4 ton) Pickup Trucks, 2 Wheel Drive Only.

Charts

Installation Instructions (PDF)

Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 2 business days for Flowmaster to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Some parts are not legal for use in California or other states with similar laws/regulations

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Q & A

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  • Product guru Jeff K. doesn't just limit his revival tendencies to those of the four wheeled variety. He also likes to leave his mark on motorcycles, giving new life to tired old two-wheelers. Follow along as he tackles a 2004 Kawasaki Vulcan.

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