NISMO Engine Oil Cooler Kit For Skyline GT-R BNR34 RB26DETT 21300-RRR40Brand NISMO Series Name Engine Oil Cooler Kit Product Descriptions Aiming at introducing air into the core and improving omission performance, we adopted a compact, superior heat exchange core and new air guide with high airtightness. It enabled optimum layout with good airflow efficiency for each model, realizing high cooling effect Specification: Air cooled type Core: H 140 _ W 294 _ D 50 (mm), 19 steps, made of aluminum Air guide: made of aluminum,