SKU: 22160713326

COOLANT EXPANSION TANK, ELISE/EXIGE, OEM LOCATION

Sale price$137.67 Regular price$152.97
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

COOLANT EXPANSION TANK, ELISE/EXIGE, OEM LOCATIONThe Radium remote mounted coolant header tank is commonly required for custom Lotus applications such as engine swaps, turbocharger kits, etc. where the OEM expansion tank is no longer in an ideal location. The main tank is a 2 piece design constructed of CNC 6061 billet aluminum, as shown below. The two halves are bolted together along with a CNC billet aluminum cap receiver which mates to any standard 32mm "Type A" style pressure cap. Coolant header

The Radium remote mounted coolant header tank is commonly required for custom Lotus applications such as engine swaps, turbocharger kits, etc. where the OEM expansion tank is no longer in an ideal location.

The main tank is a 2-piece design constructed of CNC 6061 billet aluminum, as shown below. The two halves are bolted together along with a CNC billet aluminum cap receiver which mates to any standard 32mm "Type-A" style pressure cap.

Coolant header tanks are necessary for applications that utilize a low mounted radiator, such as a V-Mount, for proper air bleeding.

The Radium Engineering tank also has an internal swirl feature, as shown below. Hot pressurized coolant from the cylinder head is sent into the vortex chamber's inlet tangentially and accelerated to a high rate of rotation. This is an old hot rod trick to help aid in deaerating the system.


The Radium Coolant Expansion Swirl Tank features three ports that include -6AN male adapter fittings (not tapered pipe threads) for a positive seal. The lower ports are machined with 10AN ORB threads. For a list of other 10AN ORB adapter fittings that can be used, go HERE. The side port is machined with 6AN ORB threads. For a list of other 6AN ORB adapter fittings that can be used.
Includes:
-Billet Aluminum Coolant Tank Anodized Black
-Aluminum 6AN Male Adapter Fittings Anodized Black
-Nickel Plated Sight Tube Fittings
-Billet Aluminum 32mm Pressure Cap Receiver
-Billet Aluminum Pressure Bleed Nipple
-Laser Cut Aluminum Firewall Mounting Bracket Powder Coated Black
-Aluminum and Stainless Steel Mounting Hardware

Options:
Pressure Caps
The optional Radium pressure caps (sold separately) allow the user to select a range of pressure. The purpose of a high pressure cap is to increase the boiling point in the cooling system providing improved cooling efficiency. Each cap is manufactured from stainless steel with a race proven high pressure valve. This is something to consider when tracking the vehicle in extreme conditions.

The OEM Lotus pressure cap is 1.1 Bar.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22160713326

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hungry
Lexington, US
★★★★★ 5
Keeps my sink area neat and organized
Color: Black, Size: Medium
Really happy with this sink caddy! The 304 stainless steel feels sturdy and looks nice, and the auto drain spout keeps water from pooling on the counter. The divided sections easily hold my sponge, brush, and soap bottle without taking up much space. I also like the removable towel bar and that there was no installation needed. Redy to use right out of the box. Simple, practical, and very useful for keeping the sink area tidy.
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Reviewed in the United States on April 1, 2026
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D.F.
Natrona Heights, US
★★★★★ 4
it is good quality
Color: Black, Size: Medium
this is very sleek and handy. I like how it looks and sits on the counter. One thought the part the holds the dish cloth falls off when I take the dish cloth off. It is a minor issue, however, if there was a way to clip it more secure to the item, this would be ideal. thank yoo
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Reviewed in the United States on May 2, 2026
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Eva ZHANG
Phoenix, US
★★★★★ 5
Most importantly, its drainage system directs water into the tank, keeping it dry.
Color: Black, Size: Medium
This drain rack is small and fits perfectly on the edge of my sink. It's just the right size to hold hand soap and dishcloths, doesn't take up much space, and most importantly, it directs water directly into the sink, keeping it dry and keeping my sink clean and tidy.
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Reviewed in the United States on April 5, 2026
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Kathy Sweatmon
Carnegie, US
★★★★★ 5
Good product
Color: Black, Size: Medium
It is as described, looks neat and tidy on the sink. Just big enough to do what I need it to do. My sink stays dry because the wate goes back int the sink.
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Reviewed in the United States on February 14, 2026
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Ethel White
Chelsea, US
★★★★★ 5
Quality is good.
Color: Black, Size: Medium
A product that works as promised.
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Reviewed in the United States on May 17, 2026

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