Upgrade your RX-7’s cooling system with the Vinny Fab Upper Water Neck, a direct replacement for the factory unit—precision-engineered for performance, reliability, and style.

Machined from our Vinny Fab 12 mm thick CNC billet flange, this unit ensures a perfect seal and long-lasting durability. Dual sensor ports, and is available in multiple finishes to suit your build’s look.

Features & Benefits

• Direct Factory Replacement: Bolts straight on with no modifications required.

• 12 mm CNC-Machined Flange: Made in-house for maximum strength and sealing integrity.
  

• Dual Sensor Ports:

  • M12 x 1.25 port for water-level sensor

  • 1/8” NPT port with blanking bung included

• Tube Options: Choose between 16 AN or 38 mm outlet to match your setup.

• Finish Options: Raw / Brushed, Polished, Satin Black, or Textured Black.

• Updated Design: Now clears overdrive pulleys for water pump compatibility.

• Compatibility: Not suitable for twin-turbo setups.

• Note: Radiator cap not included- Made to suit the stock high pressure cap

Precision-built for rotary reliability and clean aesthetics — this is the perfect upgrade for street or track FD3S builds.