2003 JEEP WRANGLER TJ  - aFe Power Race- Do Not Load - aFe48-48020-YN - 48-48020-YN| 4WD.com
FREE SHIPPING on Orders Over $50*

2003 JEEP WRANGLER TJ  - aFe Power Race- Do Not Load - aFe48-48020-YN - 48-48020-YN

aFe Power Race- Do Not Load - aFe48-48020-YN

Afe Power | Part Number: AFE48-48020-YN


  • Fitment: Direct Fit


  • 1-1/2" 14-gauge stainless steel mandrel-bent tubing for unrestricted flow
  • Utilizes formed collectors to decrease turbulence and increases exhaust velocity
  • Optimized tube lengths improve flow and performance
  • 100% hand MIG-welded
  • 1/2" thick laser-cut head flanges
  • Constructed of 2-1/2 mandrel-bent stainless steel tubing
  • No catalytic converter
  • Outlets connect directly to OE exhaust
  • Heavy-duty flanges and OE-style gaskets are used to maintain a leak-free seal
  • Not approved for street usage


The Race Twisted Steel long tube headers/Connection Pipes combo for the 2000-2006 Jeep Wrangler (TJ/LJ) with I6-4.0L engine. Designed to replace the extremely restrictive exhaust manifold, the performance Twisted Steel long-tube header is constructed of 1-1/2 inch, 14 gauge, mandrel-bent, stainless steel tubing for strength and durability. The smooth curves and increased diameter of this header helps remove restriction and keeps exhaust gas flowing smoothly for improved performance and durability on and off the trails. In testing, this system resulted in gains up to +2 horsepower and +7 lbs. x ft. of torque, as measured on our in-house dyno. The header comes with a 1/2" thick laser-cut head flange that is designed to match the head port for a leak-free seal. Formed collectors are used on the header to decrease turbulence and increase exhaust velocity for maximum performance. The high-flowing Connection Pipe is designed using 2-1/2 inch mandrel-bent tubing for optimum flow resulting in added horsepower and torque. This system is designed to fit as a combo with all necessary hardware for a hassle-free installation.


Question & Answers

0 Answered question


For over 15 years, Corona, California-based aFe (advanced FLOW engineering) has manufactured high performance exhaust systems, cold air intakes, intake manifolds, turbochargers and more for trucks, Jeeps and SUVs. With an imposing product line of 2,500+ applications, the company CNC machines, CAD designs, 3D scans and tests its innovative systems and components in house. This ensures that off-roaders experience increases in horsepower, engine efficiencies and fuel mileage. Additionally, aFe's lineup of air and fluid filters keeps emissions compliant and the air in your 4x4 clean while tuners and programmers aid in towing performance. Shop Afe Power Now