Customer
Reviewed in the United States on September 23, 2023
have used these on quite a few SBF with headers. only gaskets ive ever used that have not leaked. even with high rpm offroading where the headers are glowing red and the exhaust is flexing alot i have never had them leak. when i take my headers off, i debate reusing them because they are usually still look fine.might need slightly longer bolts because they are thicker than standard gaskets
DIY guy
Reviewed in the United States on June 9, 2023
Instantly solved a leaky header gasket on my 65 Mustang (with GT40P heads). Pricey but worth it.Update: Definitely not reusable, as the gasket sticks to the surface and gets destroyed when removing. Going to try copper next.
lms0341
Reviewed in the United States on October 9, 2023
I would highly recommend these gaskets. I installed a custom set of headers on my car and burned through two sets of other gaskets after they developed leaks. Remflex was recommended by a local old school exhaust guy and once I installed them and torqued the header bolts, no leaks. I didn't even have to go back and re-tighten after getting the engine up to temp.
Miguel Lott
Reviewed in the United States on October 23, 2023
The first time I bought these, they came.... and I was shocked!! These products are made from a material I am already familiar with from my work. The material is called Grafoil and is used in the industrial valve industry, for the stem packing and end seals. 2000 psi rating on these valves... Remflex uses a screen material internally to hold the shape, but this material will conform to nearly any imperfection this side of hitting the header flange with a sledge hammer. I used them once when I had to remove my headers to drop the transmission, and they sealed so well, I bought another set and the collector gaskets when I ordered a new engine. I just installed the headers today and same results. The collector gaskets will be installed next weekend. I am sure they will seal up just like flange gaskets. I bought aluminum collector gaskets last time, and they were horrible. Leaked on literally 2/3rds of the entire surface.
Ryan
Reviewed in the United States on July 21, 2021
I changed to these gaskets after issues with OEM and standard replacements, and haven’t had an issue since. Install was easy, follow their directions. Very happy with the purchase.
Dan ro
Reviewed in the United States on February 24, 2020
Good buy
Jason F.
Reviewed in the United States on July 15, 2018
First off I love these gaskets. The only thing is I wish you could save them. I bolted them up and had to unbolt my header about a month later. The gasket fell apart. But I still give it 5 stars because they seal up my Mac long tubes on my mustang which no other gaskets would do.
Jacob Smith
Reviewed in the United States on June 18, 2015
Seem nice. A little thick, pushed my headers out a bit. Assuming they seal and don't leak, they should be perfect.