Nissan RB Twin Cam Double Head Drain Oil & Coolant

RB Double Head drain kit

This well-engineered piece of gear is specifically designed to maximize fluid flow out of the back of the Nissan RB Twin Cam cylinder head where it needs it most. Everyone has seen an aftermarket head drain, but this ticks all the boxes, this new PRP unit allows oil drainage to the left or the right or both, which works well for the dry-sump user.

More importantly, water flow, a dire must for all race, semi grout and full grout filled block applications that still run a wet head. The PRP head drain kit allows you to run a -10 line out of the back of the head to a swirl or header tank system, which dramatically improves water flow and temperature equalization throughout the cylinder head.
The PRP head drain kit does allow you to block any option that is not required, you are also able to run -6, -8, -10 fittings in any of the ports to suit your setup.

** This kit was updated in early 2022 to include a double water drain as well as double oil, meaning there is both water and oil provisions to both sides of the unit to aid with water gallery access to billet blocks and also can be used as water access fitting for turbo or heater core circulation, photos have not been updated to show new 4th fitting port**

The kit comes with:
Billet Head drain available in Red, PRP Purple, Black, Silver.
2 x -10 AN fittings one long one short both with a genius inner 12mm Allen key hex design.
2 x -10 port-style inner hex bung.
bolt and o ring kit.

The sealing O-rings are an off shelf size, 27mm x 2mm and 21mm x 2mm