SpeedFactory Upper radiator filler neck 16AN (Honda B16A/B16A1/B16A2/B18C6/B18C5/B18C engines)
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SpeedFactory Upper radiator filler neck 16AN.
This SpeedFactory upper coolant fill neck is specifically designed for Honda B-Series engines. The component changes the highest point of the cooling system, making filling and system air bleeding significantly easier when using an aftermarket, custom, or tucked radiator. Constructed from high-quality aluminum, it features a laser-cut head flange to ensure a precise and reliable fit.
Features:
- Simplifies filling and air bleeding of the cooling system
- Ideal for use with aftermarket, custom, or tucked radiators
- Constructed from high-quality aluminum
- Features a laser-cut head flange for a perfect fitment
- Designed for Honda B-Series engines (B16A/B16A1/B16A2/B18C6/B18C5/B18C)
- Equipped with a -16AN hose end configuration
Note: requires the SpeedFactory high-pressure radiator cap (SKU: SF-06-079) for installation.

