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Exhaust Exhaust Pipes, Systems and Components

Flowmaster

Flow Fx Cat-Back Exhaust System Fits 1999-2007 (Classic Body) GM 1500 4.3L, 4.8L, 5.3L With 143.5 Inch Wheelbase, Single Exit Aggressive To Moderate Sound Flowmaster

$691.95 $649.95 Save $42.00

SKU: F00L 717873

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Description

Part #: 717873

This Flowmaster Flow FX cat-back exhaust system is designed for 1999-2007* (*Classic Body) GM Silverado/Sierra 1500 trucks with 4.3L, 4.8L & 5.3L engines and features 409 stainless steel construction for added durability and 16-gauge mandrel-bent tubing for free unrestricted flow. The compact, oval straight-through Flow FX performance muffler attaches behind the catalytic converter and delivers a moderate, deep and powerful sound with minimal interior resonance.The mandrel-bent stainless tailpipe tucks up high in the undercarriage protecting it from being crushed when traversing rocky terrain. This system uses the factory hanger locations and is finished off with a 4.50-inch black ceramic-coated 304 stainless steel tip embossed with the Flowmaster name. The kit includes detailed instructions and all hardware necessary for a quick and easy installation you can do at home. Covered by our Lifetime Limited Warranty.Increases of 6.7 HP and 6.5 FT/LBS over the stock exhaustSystem produces a nice rumble with minimal internal resonanceLarge 4.50-inch black ceramic coated stainless steel tip offers an aggressive lookIncludes complete hardware and factory styled hangers in stock locations for an easy installationFlowFX straight-through performance muffler delivers a deep tone and improved exhaust flowMandrel-bent 16-gauge 409 stainless steel tubing maximizes exhaust flow with excellent corrosion resistanceLifetime Limited Warranty

Features:

  • Increases of 6.7 HP and 6.5 FT/LBS over the stock exhaust
  • Deep Powerful Tone Inside And Outside The Vehicle
  • System produces a nice rumble with minimal internal resonance
  • Full Stainless Steel Construction
  • Large 4.50-inch black ceramic coated stainless steel tip offers an aggressive look
  • Easy Installation
  • Includes complete hardware and factory styled hangers in stock locations for an easy installation
  • FlowFX "straight-through" performance muffler delivers a deep tone and improved exhaust flow
  • Mandrel-bent 16-gauge 409 stainless steel tubing maximizes exhaust flow with excellent corrosion resistance
  • Lifetime Limited Warranty

Fits 1999-2007 (Classic Body) GM 1500 4.3L, 4.8L, 5.3L with 143.5 inch wheelbase, single exit - Aggressive to moderate sound

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The Flowmaster FlowFX Cat Back exhaust system, MPN 717873, is constructed from durable 409 stainless steel with 16-gauge mandrel-bent tubing and a 4.50-inch black ceramic-coated 304 stainless steel tip, designed for 1999-2007 Classic Body GM Silverado/Sierra 1500 trucks with 4.3L, 4.8L, or 5.3L engines.

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Specifications

BrandFlowmaster
Part NumberF00L 717873

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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