Gibson Header GP137S-C


Gibson Exhaust GP137S-C

Exhaust Header; For Use With LS Engine; Side Exit; 1-3/4 Inch Primary Tube; 3/8 Inch Think Flange; 50 State Street Legal; Ceramic Coated Steel; With Gaskets/ Hardware



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 Classic Muscle Exhaust System Aggressive Tone



Gibson Header GP137S-C

Every Gibson Performance Header is Dyno-tuned and engineered to deliver more usable Horsepower and Torque at low and mid-range RPM highway speeds. Improves engine’s ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off-road. 50 State Street legal. Meets EPA and CARB requirements. No welding required. Uses OEM style connections.

Gibson Header GP137S-C

Style: Short Tube
Exit Location: Chassis Exit
Primary Tube Diameter (IN): 1-3/4 Inch
Flange Type: 2 Bolt Flange
Flange Thickness: 3/8 Inch
State Legal: 50 State Legal
Color/ Finish: Silver Ceramic Coated
Material: Stainless Steel
Includes Bolts/Studs: Yes
Includes Gaskets: Yes
Welding Required: No

Gibson Header GP137S-C

Gibson Header GP137S-C

  • Stainless Steel 16-Gauge Mandrel Bent Tubing
  • Short Tube Style Header
  • Features Heavy Duty Laser Cut Flanges
  • Improves Engine’s Ability To Breathe And Cooler Operating Engine Temperature
  • Uses OEM Style Connections
  • Premium Gaskets And Hardware
  • No Welding Required
  • Limited Lifetime Warranty



Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to

The installation is very important.

Our Header installers are the best in the industry. The system is completely checked. No rattles, leaks or crooked parts here!

Header Installation & Hookup Available

We all know that the right tools for the right job is very important. At FMS Performance we believe that using the the right tools for header Installation starts with the right installer.

Our technicians have been professionally educated and have completed industry degrees from accredited schools. They also continue their education with a daily practice and updates when available.

FMS has a specialist for each segment of installation. We prefer to supply you with the parts we install but we can install your supplied products as well.

FMS Performance offers and installs cold air intake kits. Installing and custom building performance exhaust systems. Our stores install automotive computer tuners.  headers. superchargers.  tonneau covers.  suspension kits, lowering and lifting. We install shocks and struts. FMS offers complete brake kit or brake service. We mount and balance wheels and tires.

We can help with almost anything truck accessory related. For your convenience you can select the button below for a quote or appointment. Check us out on FaceBook.

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