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Radium Engineering Coolant Tank - Universal 1240 mL

Radium Engineering SKU: RAD20-2270
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This is a pressurized coolant expansion tank rather than an overflow bottle, so it plumbs into the cooling circuit itself. The multi piece body is CNC machined from billet 6061 aluminum around a tall water level window showing 118mm of coolant height, and its two internal chambers connect through crossover passages at the top and bottom. A 6AN ORB (9/16"-18) top port takes hot water in and bleeds air naturally, a 10AN ORB (7/8"-14) bottom port returns coolant to the water pump suction, and a second 10AN ORB port can be run to the highest point in the engine. The billet receiver accepts a Type A radiator cap, and the included anodized aluminum bracket offers five threaded positions per side so the tank can be raised or lowered across 26mm.

Specifications

Type Universal pressurized coolant expansion tank
Capacity 1240 mL
Material CNC billet 6061 aluminum; anodized aluminum bracket; stainless steel hardware
Ports 1 x 6AN ORB (9/16"-18) top; 2 x 10AN ORB (7/8"-14) bottom; 1/4 in aluminum pressure bleed barb
Cap Type A radiator cap receiver; 32mm import style cap sold separately
Size 139mm W x 97mm D x 193mm H (without lower fittings)
Mounting Anodized aluminum bracket, 4 height positions over 26mm; stainless hardware included
Quantity 1
Part Number 20-2270
Warranty 1 year limited

Documents: Installation Instructions (PDF)

Shipping

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  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
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Returns

  • 30-day returns on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee, buyer pays return shipping, and original shipping is not refunded. All waived if the item is defective or we made the error.
  • Installed or used parts cannot be returned. Confirm fitment before you install.
  • Product images may be representative. The part number and specifications in the listing are what ships.
  • Special orders and custom items are final sale.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy
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