Gibson Performance Header for 1997-1999 GMC C3500 and C2500 7.4L – Ceramic Coated

Description

The Gibson GP113S-C performance header is engineered to enhance your vehicle’s power and efficiency by increasing airflow and reducing exhaust backpressure. Designed as a direct fit for 1997-1999 GMC C3500 and C2500 trucks with a 7.4L engine, this header replaces the factory manifold using OEM style connections, ensuring a straightforward installation without welding. Its ceramic coating provides superior heat resistance, helping to maintain cooler operating temperatures and improve engine longevity. The header’s mandrel-bent 16-gauge stainless steel tubing ensures durability and optimal exhaust flow, contributing to increased horsepower and torque at low and mid-range RPMs, ideal for street and off-road use.
Backing this performance upgrade are heavy-duty 3/8-inch thick laser-cut port flanges that prevent warping or leaking, along with premium gaskets and hardware for a secure, leak-free seal. The included stainless Y-pipe, which excludes air injection, complements the header to optimize exhaust flow further. Fully compliant with EPA and CARB standards, this header is street legal in all 50 states and will not affect your vehicle’s factory warranty. Its durable construction and high-quality components make it a reliable choice for enthusiasts seeking increased performance without sacrificing legality or warranty coverage.
Gibson’s lifetime limited warranty offers added peace of mind, ensuring long-term satisfaction with your upgrade. Designed for those looking to improve engine breathing and overall vehicle performance, this header is an excellent choice for both daily drivers and off-road adventurers seeking reliable, high-quality exhaust performance enhancements.

Features:

• Heavy-duty 3/8-inch thick laser-cut port flanges prevent warping and leaks

• Made from durable 16-gauge 409L stainless steel tubing for longevity and optimal exhaust flow

• Ceramic coating provides heat resistance up to 1300 degrees Fahrenheit

• Includes high-quality gaskets and hardware for secure installation

• Uses OEM style connections for easy, welding-free installation

• Mandrel bent tubing enhances exhaust flow and performance

• Stainless Y-pipe included, without air injection, for improved exhaust flow

• Street legal and compliant with EPA and CARB regulations

• Backed by a lifetime limited warranty for peace of mind

Fitment:
Chevrolet C2500 Base 1996
Chevrolet C2500 Base 1997
Chevrolet C2500 Base 1999
Chevrolet C2500 Cheyenne 1996
Chevrolet C2500 Cheyenne 1997
Chevrolet C2500 Cheyenne 1998
Chevrolet C2500 LS 1999
Chevrolet C2500 Silverado 1996
Chevrolet C2500 Silverado 1997
Chevrolet C2500 Silverado 1998
Chevrolet C2500 WT 1998
Chevrolet C2500 Suburban Base 1997
Chevrolet C2500 Suburban Base 1998
Chevrolet C2500 Suburban Base 1999
Chevrolet C2500 Suburban LS 1997
Chevrolet C2500 Suburban LS 1998
Chevrolet C2500 Suburban LS 1999
Chevrolet C2500 Suburban LT 1997
Chevrolet C3500 Base 1996
Chevrolet C3500 Base 1997
Chevrolet C3500 Base 1999
Chevrolet C3500 Cheyenne 1996
Chevrolet C3500 Cheyenne 1997
Chevrolet C3500 Cheyenne 1998
Chevrolet C3500 LS 1999
Chevrolet C3500 Silverado 1996
Chevrolet C3500 Silverado 1997
Chevrolet C3500 Silverado 1998
Chevrolet K2500 Base 1996
Chevrolet K2500 Base 1997
Chevrolet K2500 Base 1999
Chevrolet K2500 Cheyenne 1996
Chevrolet K2500 Cheyenne 1997
Chevrolet K2500 Cheyenne 1998
Chevrolet K2500 LS 1999
Chevrolet K2500 Silverado 1996
Chevrolet K2500 Silverado 1997
Chevrolet K2500 Silverado 1998
Chevrolet K2500 WT 1998
Chevrolet K2500 Suburban Base 1997
Chevrolet K2500 Suburban Base 1998
Chevrolet K2500 Suburban Base 1999
Chevrolet K2500 Suburban LS 1997
Chevrolet K2500 Suburban LS 1998
Chevrolet K2500 Suburban LS 1999
Chevrolet K2500 Suburban LT 1997
Chevrolet K3500 Base 1996
Chevrolet K3500 Base 1997
Chevrolet K3500 Base 1999
Chevrolet K3500 Cheyenne 1996
Chevrolet K3500 Cheyenne 1997
Chevrolet K3500 Cheyenne 1998
Chevrolet K3500 LS 1999
Chevrolet K3500 Silverado 1996
Chevrolet K3500 Silverado 1997
Chevrolet K3500 Silverado 1998
GMC C2500 Sierra SL 1996
GMC C2500 Sierra SL 1997
GMC C2500 Sierra SL 1998
GMC C2500 Sierra SL 1999
GMC C2500 Sierra SLE 1996
GMC C2500 Sierra SLE 1997
GMC C2500 Sierra SLE 1998
GMC C2500 Sierra SLE 1999
GMC C2500 Sierra SLT 1996
GMC C2500 Sierra SLT 1997
GMC C2500 Sierra SLT 1998
GMC C2500 Sierra SLT 1999
GMC C2500 Suburban Base 1997
GMC C2500 Suburban Base 1998
GMC C2500 Suburban Base 1999
GMC C2500 Suburban SLE 1997
GMC C2500 Suburban SLE 1998
GMC C2500 Suburban SLE 1999
GMC C2500 Suburban SLT 1997
GMC C2500 Suburban SLT 1998
GMC C2500 Suburban SLT 1999
GMC C3500 Sierra SL 1996
GMC C3500 Sierra SL 1997
GMC C3500 Sierra SL 1998
GMC C3500 Sierra SL 1999
GMC C3500 Sierra SLE 1996
GMC C3500 Sierra SLE 1997
GMC C3500 Sierra SLE 1998
GMC C3500 Sierra SLE 1999
GMC C3500 Sierra SLT 1996
GMC C3500 Sierra SLT 1997
GMC C3500 Sierra SLT 1998
GMC C3500 Sierra SLT 1999
GMC K2500 Sierra SL 1996
GMC K2500 Sierra SL 1997
GMC K2500 Sierra SL 1998
GMC K2500 Sierra SL 1999
GMC K2500 Sierra SL 2000
GMC K2500 Sierra SLE 1996
GMC K2500 Sierra SLE 1997
GMC K2500 Sierra SLE 1998
GMC K2500 Sierra SLE 1999
GMC K2500 Sierra SLE 2000
GMC K2500 Sierra SLT 1996
GMC K2500 Sierra SLT 1997
GMC K2500 Sierra SLT 1998
GMC K2500 Sierra SLT 1999
GMC K2500 Sierra SLT 2000
GMC K2500 Suburban Base 1997
GMC K2500 Suburban Base 1998
GMC K2500 Suburban Base 1999
GMC K2500 Suburban SLE 1997
GMC K2500 Suburban SLE 1998
GMC K2500 Suburban SLE 1999
GMC K2500 Suburban SLT 1997
GMC K2500 Suburban SLT 1998
GMC K2500 Suburban SLT 1999
GMC K3500 Sierra SL 1996
GMC K3500 Sierra SL 1997
GMC K3500 Sierra SL 1998
GMC K3500 Sierra SL 1999
GMC K3500 Sierra SLE 1996
GMC K3500 Sierra SLE 1997
GMC K3500 Sierra SLE 1998
GMC K3500 Sierra SLE 1999
GMC K3500 Sierra SLT 1996
GMC K3500 Sierra SLT 1997
GMC K3500 Sierra SLT 1998
GMC K3500 Sierra SLT 1999