Hello all, swapped out my blown radiator for a DENSO 2213426, in my 05 auto coupe. All went well but the new stock cap was not a good fit for this radiator. I did not want to force it, so I cleaned up for the day and will resume tomorrow. I checked the Denso and Rock Auto site for more information, but nothing came up. I'll try a few different caps tomorrow (Stant 13psi) and go from there. Thanks for any help.

 

I replaced mine with a rock auto special too. Are you asking for if the relief pressure is right?

 

Sorry, I was asking about fitment. My stock cap seemed to be a bit smaller than this radiator fill neck. I'll get back to it tomorrow.