On several occasions, I had to work on NSX with aftermarket coolant header tank (or Expansion tank) and also asked from many owners regarding the use of aftermarket one. Although they look nice, I saw several issues such as cap not secure enough, leaking coolant due to crack at the welding, design issue with tank expanding under pressure, etc. As far as I know, I have never seen an aftermarket header tank ...
Updated 22-07-2014 at 10:15 AM by Kaz-kzukNA1 (Updated the font)