TracTuff PRB/ PRC Billet Water Neck w/ Fill Pot

TracTuff PRB/ PRC Billet Water Neck w/ Fill Pot


It's not a swirl tank, it may look like one but its not... this is the little brother to the swirl tank, the fill pot! 

Water does not spin and the inlet/ out configuration does not help to separate air. The fill pot is easier to make and as a result, less expensive, so if you just want a point to fill the cooling system... this is for you! Pretty compact and several customers have said the oem hose can still work once trimmed, assuming you select the correct outlet position.

The fill pot starts with a beautifully machined 6061-T6 flange that incorporates the largest port possible within the OEM gaskets footprint as well as a 1/2" NPT water bypass port and machined o-ring groove for the OEM gasket. You can chose from a list of options to make the product as unique as your project; including outlet position, accessory ports for aftermarket sensors and/ or turbo and wastegate feeds, and radiator cap bung types. 

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 billet neck has a 1/2" NPT port on the bottom side so you can choose to reconnect the factory water bypass hose (hose fitting option) or you can delete it (plug option), I recommend you keep it but its entirely up to you! Tank is welded so that it sits level when bolted to an engine with a 15° lean backwards (exhaust side) or an 8° lean forward (intake side).