Nunsu Aluminum Coolant Housing Filler Neck – For Honda Acura K20Z3 K24 Engines

Replace that brittle plastic coolant neck on your K-series Honda or Acura with this sweet aluminum one from Nunsu Automotive!

It’s built for K20Z3 and K24 engines, and it swivels for easy hose routing.

No drilling or mods needed—just bolt it on.

Each unit is 100% leak tested and comes with a gasket, so you’re ready to roll.

The thermostat opens at 195°F, and the whole thing is backed by a 5-year warranty.

Made of durable silver aluminum, it looks great and lasts way longer than the factory plastic.

If you’re doing a performance build or just want a reliable fix, this is the part for you!