RX7 AST Delete Coolant Expansion Tank Twin Turbo

RX7 AST Delete Coolant Expansion Tank Twin Turbo



RX7 AST Delete Coolant Expansion Tank Twin Turbo


TGS Tunings RX7 AST Delete Coolant Expansion Tank Twin Turbo variant is the ideal choice to eliminate the OEM & other aftermarket AST (air separator tank) on the 93+ Mazda FD RX-7 Twin Turbo

Limited time sale hurry and be the first to pre order your twin turbo AST Delete tank

  • Made In Manchester UK
  • Twin Turbo FD3S
  • Replaces both the factory thermostat housing/coolant neck & the air separator tank AST.
  • Billet aluminium filler neck, precision machined & beautifully TIG welded.
  • Simple, 100% direct bolt-on complete with mounting bolts.
  • Works with the factory metric thread water level sensor and factory AST cap.
  • Compact design for twin turbo crossover pipe work.
  • Increased water transfer & air separation.
  • All products are Pressure tested before shipping.
  • 38mm bead rolled coolant pipe inlet

The tank has been tested and works with the DM Motorsports Underdrive water pump pulleys and other makes.

Made on order, Shipping orders normally takes no longer than 48hrs.


These tanks are hand fabricated right here in our workshop based in Stockport, Greater Manchester. Years of experience in modifying and tuning these legendary RX7s has given us the edge over the competition. Each tank is built and tested to make sure it meets our high standards.

Additional information

Weight 1 kg
Dimensions 30 × 23 × 11 cm

Brushed, Polished


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