Nitto RB Head Oil Drain (RB20 RB25 RB26)


SKU: NIT-OIL-RBD Categories: , , ,


Nitto RB Head Oil Drain (DOHC)

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.

The kits are anodised in two colours, black or clear, as well as two fitting types, 5/8 push on fitting or -10AN fitting.


  • Billet 6061-T6 Series Aluminium Alloy
  • Hard Anodized Finished
  • Full CNC Profiling
  • No-turn Locking System for Fittings
  • Illustrated Fitting instructions
  • Profiled to allow factory boost and water lines to run across back of cylinder head

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 on any built RB DOHC engine.

Precision CNC machined from billet 6000 series aluminium alloy and finished with hard anodizing, this product will impress the most fastidious of buyers. There is no need for purchasing expensive aftermarket fittings as the Nitto RB Head Drain is supplied with o-ringed fittings that run a receiver groove and grub screw locking system.

These fittings can be installed on either side of the drain allowing hose routing to whatever side of the engine your installation calls for. The kit may be optioned with one of two fittings. a 5/8 push on fitting is available, and, for those that would prefer to utilise the AN style fittings, an optional -10AN fitting is also available.

The head drain is supplied with 304 Stainless Steel mounting bolts and step by step instructions making it an easy to install, well priced, must have product.

RB Head Oil Drain Part Numbers:

  • 5/8 Push on Fitting (NIT-OIL-RBD)
  • -10AN Fitting (NIT-OIL-RBD10)

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