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  • 1991-1999 Jeep Wrangler YJ/TJ I6-4.0L Twisted Steel Headers by aFe Power (48-46201) - Modern Automotive Performance
  • 1991-1999 Jeep Wrangler YJ/TJ I6-4.0L Twisted Steel Headers by aFe Power (48-46201)

    Save 11% with code "VET11"

    aFe Power

    1991-1999 Jeep Wrangler YJ/TJ I6-4.0L Twisted Steel Headers by aFe Power

    PART# AFE 48-46201
    We Price Match!

    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 623.19   $ 655.99
    You Save 5% ($ 32.80)



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    aFe Power’s new Twisted Steel header delivers an astounding 7hp and 9lbs. x ft. torque while outflowing the factory exhaust manifold. The header is constructed of 1.5” 14-gauge 409 SS tubing with a 1/2” thick head flange to ensure a leak free seal. To eliminate dead space that can cause turbulence and hindering flow that formed collectors are prone to produce, a true merged collector and optimized tube lengths are used for true pulse control technology improving flow and performance. 100% hand TIG-welded construction ensures optimal 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. All components are supplied for a hassle-free installation with no modifications necessary.

    Mitered Collectors:

    Mitered collectors extend the tube length into the flange which decreases turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.

    Tig-Welded:

    100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.

    1/2" Thick Head Flange:

    A 1/2" thick head flange is used for maximum strength and durability. The flange design is identical to the head port and is machined flat for a leak-free seal.

    409 SS Construction:

    This header is constructed of durable CNC mandrel bent 14-gauge 409 stainless steel tubing for maximum performance, corrosion resistance and strength eliminating cracking.

    Premium Gasket:

    A premium intake/exhaust flange gasket with aluminum fire rings is provided for a leak-free seal. The gasket is port matched for a perfect seal.

    aFe Power’s new Twisted Steel header delivers an astounding 7hp and 9lbs. x ft. torque while outflowing the factory exhaust manifold. The header is constructed of 1.5” 14-gauge 409 SS tubing with a 1/2” thick head flange to ensure a leak free seal. To eliminate dead space that can cause turbulence and hindering flow that formed collectors are prone to produce, a true merged collector and optimized tube lengths are used for true pulse control technology improving flow and performance. 100% hand TIG-welded construction ensures optimal 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. All components are supplied for a hassle-free installation with no modifications necessary.

    Mitered Collectors:

    Mitered collectors extend the tube length into the flange which decreases turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.

    Tig-Welded:

    100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.

    1/2" Thick Head Flange:

    A 1/2" thick head flange is used for maximum strength and durability. The flange design is identical to the head port and is machined flat for a leak-free seal.

    409 SS Construction:

    This header is constructed of durable CNC mandrel bent 14-gauge 409 stainless steel tubing for maximum performance, corrosion resistance and strength eliminating cracking.

    Premium Gasket:

    A premium intake/exhaust flange gasket with aluminum fire rings is provided for a leak-free seal. The gasket is port matched for a perfect seal.

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    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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