Home » Jeep Exhaust » Headers » Gibson GP400S Stainless Steel Header for 91-99 Jeep® Wrangler YJ, TJ & (Grand) Cherokee XJ, ZJ, WJ with 4.0L I-6 Gasoline Engine

Gibson GP400S Stainless Steel Header for 91-99 Jeep® Wrangler YJ, TJ & (Grand) Cherokee XJ, ZJ, WJ with 4.0L I-6 Gasoline Engine

Catalog #: 17666.101
Gibson Part #: GP400S
Description
Unleash Your Vehicle's Full Power Potential! Every Gibson 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. Will not affect the factory warranty.
Details

Stainless Steel- 409L heavy duty 16ga tubing

  • Mandrel-bent tubing – for optimum airflow and increased Horsepower
  • Heavy duty 3/8" thick laser cut port flanges-no warping or leaking
  • Bolt on installation- no welding required
  • Attaches to the original equipment crossover pipe
  • Air injection & oxygen sensor fittings provided
  • Premium gaskets and hardware
  • OEM style connections
  • 50 state street legal
Installation Notes
Installation Difficulty:
Level 3Advanced
Installation Time: 3-6 hours
  • Features: High Temp Coating
  • Color: Black
  • Motor: 6cyl 4.0L
  • Material: Steel
  • Jeep Wrangler (TJ)

  • 1999 Jeep Wrangler (TJ)
  • 1998 Jeep Wrangler (TJ)
  • 1997 Jeep Wrangler (TJ)
  • Jeep Wrangler (YJ)

  • 1995 Jeep Wrangler (YJ)
  • 1994 Jeep Wrangler (YJ)
  • 1993 Jeep Wrangler (YJ)
  • 1992 Jeep Wrangler (YJ)
  • 1991 Jeep Wrangler (YJ)
  • Jeep Cherokee (XJ)

  • 1999 Jeep Cherokee (XJ)
  • 1998 Jeep Cherokee (XJ)
  • 1997 Jeep Cherokee (XJ)
  • 1996 Jeep Cherokee (XJ)
  • 1995 Jeep Cherokee (XJ)
  • 1994 Jeep Cherokee (XJ)
  • 1993 Jeep Cherokee (XJ)
  • 1992 Jeep Cherokee (XJ)
  • 1991 Jeep Cherokee (XJ)
  • Jeep Grand Cherokee (ZJ)

  • 1998 Jeep Grand Cherokee (ZJ)
  • 1997 Jeep Grand Cherokee (ZJ)
  • 1996 Jeep Grand Cherokee (ZJ)
  • 1995 Jeep Grand Cherokee (ZJ)
  • 1994 Jeep Grand Cherokee (ZJ)
  • 1993 Jeep Grand Cherokee (ZJ)
  • Jeep Grand Cherokee (WJ)

  • 1999 Jeep Grand Cherokee (WJ)
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