Reviewed By jeff c (Los Angeles, CA) Reviewed for a 1994 Toyota 4Runner —11/19/2009 8:47 AM
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.
Reviewed By Scott B (Albuquerque, NM) Reviewed for a 1989 Toyota 4Runner —9/5/2012 8:44 PM
Sound great. Easy to install. I can tell the engine runs with less effort. But be warned that the cheaper painted finish won't last more than 3 hours. They smoked like crazy until every bit of paint was burned down to bare metal. Maybe the higher-priced coating option is better, but I couldn't justify the much, much higher price. In the end, the headers do what they should - increase hp when you want it, and give a little extra mpg when you take it easy on the gas pedal.
Reviewed By Fred S (International falls, MN) —5/16/2017 11:22 AM
the manifolds l got were cast iron l was hoping for the stainless steel welded ones But maybe next time they are forever cracking on the triton 5.4 the cast ones fit perfect I'am very happy with them Thanks Fred