Your Cart Is Empty
Showing 1 - 7 of of 9

Doug Thorley Headers - THY-505-C

3 Into 1 Header Exit
  • $641.00
  • Free Shipping
  • Ships Between 12/17 - 12/19
  • What Do You Drive?


  • Style:
    Ceramic Coating
  • Part #:
  • Driver Header Exit
  • Y-Pipe assembly must be used on vehicles originally equipped with catalytic converters
  • Will not fit with steering column shifter
  • Header comes equipped with mid-pipe or Y-pipe assembly
  • Tube Size: 1 1/2"
  • Collector Size: 2 1/2"

Have a Question?
Have a Question? Ask a product expert! (800) 874-8888 Live Chat

We’re sorry. The information you have requested is temporarily unavailable.

Doug Thorley Headers Part #THY-505-C Customer Reviews

Average Rating

2 Customer Reviews

Thorley Headers for '89 Toyota V6

Reviewed by robert y (Monument, CO) Reviewed for a 1989 Toyota Pickup — Jul 22, 2010 8:50 AM

Was this review helpful?
Yes   No
28 of 31 people found the following review helpful.

I've had my Thorley Headers installed on my '89 Toyota Pickup for about a week now, and they are fantastic! The sound they make is truly melodious coupled with the FlowMax muffler. It took about five hours to get them on, but well worth the effort. Fitment is perfect. Not only has it increased my MPGs from 18 to 22, I can feel a definite boost in power as well. And this from an engine with almost a quarter of a million miles on it. I would absolutely recommend them to anyone considering this upgrade.

3vze Thorley Headers

Reviewed by jeff c (Los Angeles, CA) Reviewed for a 1994 Toyota 4Runner — Nov 19, 2009 8:47 AM

Was this review helpful?
Yes   No
6 of 14 people found the following review helpful.

These Thorley Headers weigh twice of what my Downy Offroad (RIP) headers weighed due to more robust materials. They are only a week old so time will tell.