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Flowmaster

Flowmaster American Thunder Crossmember-Back Exhaust System

1968-1974 Chevrolet Nova with V8 engine. 2.50 inch Stainless Steel Pipes

Part # 817158 Be the first to write a review
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Delta Flow
For the person who is looking for a true dual crossmember-back exhaust system with an moderate to aggressive exhaust tone. With an easy fit in mind, these systems are constructed from 16-gauge 2.50-inch mandrel-bent stainless steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series performance mufflers and includes all hangers and hardware necessary for installation. The tailpipes exit in the factory location behind the rear wheels. The exhaust system delivers a moderate to aggressive exterior sound tone with a moderate interior tone and is best suited for the enthusiast who wants their performance to be heard. Like all Flowmaster exhaust systems, the benefits include improved throttle response, power and mileage. Covered by our Lifetime Limited Warranty.

Features:

  • Super 44 Series Performance Mufflers for Deep Powerful Sound
  • Crossmember-back True Dual 2.50-inch Exhaust System
  • Includes Hangers and Hardware for Installation
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Moderate to Aggressive Exterior Exhaust Tone
  • Does Not Include Header Reducer Cones or Downpipes for Factory Manifolds
  • H-pipe Crossover for Maximum Power
  • Lifetime Limited Warranty

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

2WD/4WD2WD
Brand Flowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)2.5
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualSingle
Sound LevelAggressive / Moderate
System TypeCrossmember-back
Tube Diameter2.5 inch
Tubing Diameter (in)2.5
Type of ExhaustCrossmember-back
UPC700042025626
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817158
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.

Fits 1968-1974 Chevrolet Nova with V8 engine.
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