Nitto Nissan RB DOHC Head Drain -10 AN 223 This is a bare cylinder

This is a bare cylinder head with cam caps

even when cold

heat-treating process for unparalleled performance

- Valve seal set

Nitto Nissan RB DOHC Head Drain -10 AN 223 This is a bare cylinderColor may vary between raw, black or silver. Please contact us if you have a preference. NITTO's oil drain for the Nissan RB20 25 26 head helps alleviate the all too common issue of excessive oil build up in the head area. This problem is especially evident when the engine has a high volume oil pump installed. Whether you look at this product as an oil drain or crankcase pressure relief system, there is no doubt that it is a highly beneficial product