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Doug Thorley Tri-Y Header 1981-1984 Pickup & 4Runner 22R (O2 Sensor & NO Air Injection)(Carb. Only)
Doug Thorley Tri-Y Header 1981-1984 Pickup & 4Runner 22R (O2 Sensor & NO Air Injection) THY-542Y-O-C

Our Price: $459.95

Part Number: 1046024


Doug Thorley Tri-Y Header 1981-1984 Pickup & 4Runner 22R (O2 Sensor & NO Air Injection) THY-542Y-O-C

Doug Thorley Headers THY-542Y-O-C long tube tri-y headers deliver the ultimate in performance and gas mileage for your 1981-1995 Toyota Pickup Truck, 4-Runner. Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. That better exhaust flow produces noticeable gains in horsepower and torque output, while increasing fuel efficiency.

The headers are manufactured using heavy duty 14GA steel tubing, and super flat 3/8 inch head flanges. They are then silver ceramic coated inside and out, which looks great, drastically reduces under-hood temperatures, and creates a strong barrier to protect the headers from the environment.

APPLICATION SPECIFICS: 1981-1984 Toyota Pickup Truck, 4-Runner, 22R motor (Carb. ONLY), O2 sensor in manifold, no air injection, manual Transmission only, 2WD & 4WD.

  • DRIVE: 2WD & 4WD
  • PRIMARY/COLLECTOR: 1 1/2" - 2 1/4"
  • CARB E.O. # D-540-5
  • Includes Gaskets &Studs
  • Does not fit automatic transmission.
  • Fits 5-speed models w/ hydraulic clutch only.
  • For Legality under CARB regulations the connector/Y-pipe assembly must be used on vehicles originally equipped with catalytic converter.

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Note: Images are for illustration purposes only. Images MAY NOT represent the product listed. Please contact Customer Service with any questions or concerns: 928-505-2501.

Average Customer Review: 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
Special Order Goodness October 31, 2016
Reviewer: xylorhiza  
I needed a replacement Thorley header ... quick. The old one on my daily driver cracked and blew out a big hole. I called LCE, and they had one dropped shipped to my door three business days later. It doesn't get much better than that. Even though the swap was Thorley for Thorley, it didn't bolt up at the flange, and I needed a trip to the muffler shop.

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