Aeroflow Weld-On Billet Radiator Neck 32mm I.D - AF64-0032 Waterpump There is also the option

There is also the option to purchase new bolts should you want to replace existing or missing hardware

Toyota 4AGZE

TS-19TH66B-T3110

Still maintains good throttle response

Aeroflow Weld-On Billet Radiator Neck 32mm I.D - AF64-0032 Waterpump There is also the optionRaw Finish. Suit Small Radiator Caps These radiator necks from Aeroflow Performance are just what you need when making your custom radiator or header tank system. These radiator fill necks are CNC machined from 6061 aluminium. They feature a large diameter base which eliminates distortion when welding. A female NPT and barb fitting is included with each radiator neck. Available in two styles, large 42mm and small 32mm. Aeroflow Performance radiator