Sustained high oil temperature is one of the quickest ways to shorten the life of an RB26DETT. The NISMO Engine Oil Cooler Kit (part number 21300-RRR30) is the model-specific air-cooled package developed for the Nissan Skyline R33 GT-R (BCNR33). NISMO designed the kit around a compact 19-row aluminum core and a dedicated air guide so incoming air is directed through the cooler rather than spilling around it.
The core measures 140 mm high by 294 mm wide by 50 mm deep and is paired with an aluminum air guide that requires assembly with rivets. Feed and return lines are stainless-mesh hoses with #10 fittings already installed, and the kit includes an oil-filter bracket plus the mounting hardware needed to complete the installation. The goal is a higher cooling effect with an efficient layout that suits the R33 front end when the correct bumper is fitted.
This R33 kit is specified for cars equipped with the NISMO front bumper (62022-RS596 / 62022-RN596). It is not presented as a universal fit for every stock R33 bumper opening, so bumper compatibility should be confirmed before purchase. Once installed, the additional oil cooling capacity helps protect bearings, turbos, and oil itself during track work, high-boost driving, or hot-weather use.
At Terra Firma Automotive, we supply this genuine NISMO Engine Oil Cooler Kit as the factory-developed cooling upgrade for R33 GT-R owners who want the correct BCNR33 package rather than a generic core and homemade lines. Choose Terra Firma Automotive for authentic NISMO hardware engineered for the RB26DETT.
- Genuine NISMO Engine Oil Cooler Kit
- Part Number: 21300-RRR30
- Air-cooled 19-row aluminum core
- Core size: 140 mm H × 294 mm W × 50 mm D
- Aluminum air guide (assembly / rivet type)
- Stainless-mesh feed and return hoses
- #10 hose fittings pre-installed
- Includes oil-filter bracket
- Includes mounting hardware
- Designed to improve oil-temperature control under load
- Specified for NISMO front bumper 62022-RS596 / 62022-RN596
- Protects RB26 internals and turbo oil during hard use
- Model-specific NISMO layout for BCNR33
- Trusted NISMO performance component
- Available from Terra Firma Automotive
Questions & Answers
Have a Product Question?
Be the first to ask a question about this part.