TracTuff PR3 Billet Water Neck w/ Swirl Tank

TracTuff PR3 Billet Water Neck w/ Swirl Tank

$379.95 $349.95

Okay B18C5 and B16 engine owners... this is the penical of our water neck offerings! The proven swirl tank.

It all starts with our beautifully machined flange that incorporates a 3D tapered entry port for a seamless transition to the tubing that is routed to the tank. The backside of the flange has an o-ring grove for a positive seal without the hassle of Hondabond. The tank placement has been thoroughly thought out to not only clear the distributor and VTEC solenoid but also has a brace that ties it to the cylinder head for added support and the outlet exits similarly to that found on the B18C1, allowing you to use a GSR upper hose! 

All billet parts are CNC machined from US milled 6061 aluminum. The domestic cap bung has a 1/8" NPT port and the import version has a 1/16" NPT for connection to an overflow. The domestic version uses any early model (late 70's Chevy C10 Pickup w/ 454) cap and the import version uses early model Honda (88'-91' Civic/ CRX and 90'-93' Integra) cap. 

NOTE: Made to Order - Contact for ETA - If you are interested in a specific design that varies from this, please email us at If using AN lines we also recommend designing the upper radiator hose so that there is droop/ give so the engines movement and does not push/ pull on the radiator and fatigue any parts. The filler is welded so that it sits level when bolted to an engine with a 5.5° lean forward (exhaust side).

1/1/19 Update: Due to the stress placed on the braces, from poorly plumbed upper radiator hoses, a plinth can be added to the bracket to help distribute the load and increase strength.