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Twisted Steel Long Tube Header & Y-Pipe 409 Stainless Steel w/ Cat

Jeep Wrangler (JK) 07-11 V6-3.8L
Part Number: 48-46214-YC

MSRP: $2,724.75


Twisted Steel Long Tube Headers Features:

  • Constructed out of 16-gauge, 1-5/8 IN mandrel-bent stainless steel tubing for unrestricted flow
  • 3-to-1 formed merge collectors decrease turbulence and increase exhaust velocity for maximum performance
  • Optimized tube lengths improve flow and performance
  • 100% MIG-welded construction ensures optimal strength and durability
  • Thick CNC laser cut flanges

Y-Pipe Features:

  • Constructed out of 2-1/2 IN mandrel-bent stainless steel tubing for better flow and added power
  • Connects directly to the aFe Twisted Steel headers
  • Incorporates high-flow, 400 cell catalytic converters for improved flow

Test Results:

  • Produced an astounding +20 HP and +22lbs. x ft. of TQ
Read More

aFe POWER Twisted Steel Long Tube Headers and Y-Pipe Combo are built to produce power. These full length headers and y-pipe combo offer up to +20 HP and +22lbs. x ft. of TQ, as measured on our in house dyno. The headers are constructed of 1-5/8 IN 16-gauge 409 stainless steel tubing with 3/8 IN thick flanges to ensure a leak free seal. To eliminate flow blockage 3-to-1 formed collectors are used on the headers to decrease turbulence and increase exhaust velocity for maximum performance. The high-flowing Y-pipe is designed using 400 cell catalytic converters and 2-1/2 IN mandrel-bent, stainless steel tubing for optimum flow resulting in added horsepower and torque. This system is designed to fit as a combo with all components supplied for a hassle-free installation with no modifications necessary.

Long Tube Headers
Formed Collectors:
3-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.

Optimized Tube Lengths:
Tube lengths are optimized for true pulse control technology which improves flow and performance.

Heavy Duty 3/8 IN Flanges:
3/8 IN thick flanges prevent warpage to ensure a leak-free seal over the life of the vehicle.

Dual High Flow Catalytic Converters:

This system utilizes 400 CPSI (cell per square inch) catalytic converters for maximum flow.

Constructed of mandrel-bent 3 IN stainless steel piping to reduce back pressure and improve flow.

True Merge Collectors:
The y-pipe is designed using 2-1/2 IN stainless steel tubing and utilizes a mitered merge collector to eliminate dead space that can cause turbulence and hinder flow.

409 Stainless Steel Construction:
Constructed out of durable CNC mandrel bent 409 stainless steel tubing for maximum performance, corrosion resistance and strength.

Leak-Free Seal:
High quality OE style flanges and band clamps are used for a complete 360 degree sealing surface.

Hassle-Free Installation:
The performance header and y-pipe are designed to be a true bolt on system with no cutting or modifications required.

Race Disclaimer:
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. To complete the purchase of this item, aFe POWER competition acknowledgement/liability release form must be filled out and submitted.

aFe headers are engineered and manufactured in our Corona, California manufacturing facility.


Vehicle Applications

Year Make Model SubModel Engine Fuel
2007-2011Jeep Wrangler JK V6 3.8L Gas
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MSRP: $2,724.75

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