TracTuff PR3 Filler Neck – V2

Description

Whether you have added a radiator that does not have a fill point or you are just in need of a higher fill point to aid in burping the sometimes troublesome cooling system, the filler neck for the PR3 (B18C5, B16A, and B16B) cylinder head is an entry-level product that gets it done.

The filler neck starts with a beautifully machined 6061-T6 flange that incorporates a 3D tapered exit port for a seamless transition to 1.25″ tubing and an o-ring groove on the backside for a positive seal against the cylinder head without the hassle of Hondabond. This variant works on engines that do not have a distributor or an Engine Position Module. Choose between standard hose (1.25″ OD) or -16 male flare.

NOTE: The cap bung has a 1/16″ NPT port for connection to an overflow and uses early model Honda radiator caps, such as an 88′-91′ Civic/ CRX or 90′-93′ Integra. If you are using AN lines, I recommend designing the upper radiator hose so that there is droop/ give… so the engine’s movement does not push/ pull on the radiator and fatigue any parts.

The filler neck includes two M6 socket head bolts and an o-ring. The filler is welded so that it sits level when bolted to an engine leaned forward 5.5° (exhaust side). If you have an EPM and need the filler moved, please send an email. If you use a distributor, please look at V1.