The NISMO Head gasket has a silicon coating which provides excellent seal qualities. The surface treatment is the quality of that used by the GT500 race machines. *Full metal construction *Special silicon coating for superior sealing *Race proven in Japan Grand Touring Championship Series | Skyline GT-R | BNR32 | RB26DETT | 11044-RRR45 11044-RRR46 | | BCNR33 | RB26DETT | | BNR 34 | RB26DETT | | Stagea | WGNC34 | RB26DET | 11044-RRR45 11044-RRR46 | | Silvia | PS13 | SR20DE | 11044-RR540 | | S14, S15 | SR20DE | 11044-RR540 | | PS13, RPS 13, S14, S15 | SR20DET | 11044-RR541 11044-RR542 | |