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Flowmaster 737857 Signature Series Cat-Back Exhaust System

(2014-2018 Chevrolet Silverado 1500; 2019 Chevrolet Silverado 1500 LD; 2014-2018 GMC Sierra 1500; 2019 GMC Sierra 1500 Limited)

Part of: Flowmaster Signature Series Cat-Back Exhaust System

Other options in this family: Flowmaster 738123 Flowmaster 738173 Flowmaster 737664 Flowmaster 738115 Flowmaster 737918

Manufacturer

Picture for manufacturer Flowmaster

Part Number

737857
6 reviews
Sale Price

$934.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Flowmaster 737857 Signature Series Cat-Back Exhaust System delivers dyno-proven performance gains with a moderate, refined exhaust tone. Engineered for both performance and style, this complete exhaust system features premium materials and precision craftsmanship that sets it apart from stock exhaust systems.

Premium Construction & Finish:

  • Brushed 304 stainless steel construction provides maximum corrosion resistance and a high-end appearance
  • Precision TIG welding ensures superior weld quality, better heat control, and a clean, professional finish
  • Brushed finish removes tooling marks for a cleaner, more refined overall look
  • Black chrome exhaust tips add a stylish, upscale finishing touch

Performance Benefits:

  • Increased horsepower and torque over stock exhaust system
  • Signature Series muffler design produces a moderate performance tone—aggressive enough to be heard, refined enough for daily driving
  • Improved exhaust flow reduces backpressure for measurable power gains

Installation:

  • Installer-friendly design allows for at-home installation with basic hand tools
  • Direct bolt-on fit for specified vehicle applications

Upgrade your vehicle's performance and sound with the quality and craftsmanship that Flowmaster is known for. This Signature Series system combines proven performance technology with premium materials for an exhaust system that looks as good as it sounds.

Products specifications

Fits

2014-2018 Chevrolet Silverado 1500; 2019 Chevrolet Silverado 1500 LD; 2014-2018 GMC Sierra 1500; 2019 GMC Sierra 1500 Limited

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Emission Code

5

Exhaust Pipe Wall Maximum Gauge

16

Exhaust Series

Signature Series

Exhaust Tip Color

Black

Exhaust Tip Connection

Clamp-On

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Rolled Edge

Exhaust Tip Finish

Black Chrome

Exhaust Tip Intercooled

No

Exhaust Tip Material

304 Stainless Steel

Exhaust Tip Quantity

1

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exhaust Tip Wall

Single Wall

Exit Style

Single Out Side

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Diameter

3.00

Inlet Type

Clamp-On

Mount Type

Uses Factory Hangers

Mounting Bracket Included

Yes

Muffler Body Material

304 Stainless Steel

Muffler Body Shape

Oval

Muffler Finish

Natural

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Quantity

1

Muffler Quantity

1

Muffler Type

Absorption

Pipe Color

Silver

Pipe Material

304 Stainless Steel

Product Type

Exhaust System

Sound Level

Moderate

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

1

Tail Pipe Quantity

Single

Tail Pipe Tapered Outlet

Yes

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

These were long enough, unlike the first ones I ordered. Six foot doesn't do the job for even the smallest boats.

Hard to find tire that was discontinued was available at THMotorSports. Happy to have it and overall good shopping experience.

Great translation, excellent price, fast shipping, great buy for a hard to find part.

Wish I purchased for last season, boat steers with one finger now.

Smooth

great service

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