SKU: 22160713326

COOLANT EXPANSION TANK, ELISE/EXIGE, OEM LOCATION

Sale price$137.67 Regular price$152.97
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 846 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Sharon joswick
West Palm Beach, US
★★★★★ 5
Nice looking for the money
Color: Brown
Nice size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
C
Verified Purchase
Classic 70
San Leandro, US
★★★★★ 3
Small purses.. assorted sizes
Color: Dark Brown
These are useful for teens.. returned too small for me..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
V
Verified Purchase
Violet
Massapequa, US
★★★★★ 5
Tela gruesa y de buena calidad
Super, me gustó mucho, súper amplia y muy chula.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
I
Verified Purchase
i. Coffey
Port Orchard, US
★★★★★ 5
Small but stylish!
Much smaller than anticipated but it’s exactly what I was looking for!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2025
M
martin slanovich
Lexington, US
★★★★★ 5
Canvas crossbody messenger for work, school and travel. Beautiful dark green
This is a great canvas tote messenger crossbody bag. The canvas material ensures that it’s durable and can hold all the things including iPads/laptops and other school/work related items, making this a great school or commuter bag. It’s the perfect size for that type of bag as well as for traveling when you need extra room to carry necessities. I ordered this mainly because I have plenty of fashionable bags, but my husband likes more plain or “gender-free” bags to carry and this one is perfect for boys, men, girls and women and literally anyone needing a satchel to carry their belongings. The crossbody strap is thick and comfortable and creates a super easy wearing experience, where all your things are close and easy to access. I love the dark green color where even though it’s not black/brown it’s still a “neutral” and matches most everything. Overall it’s a great bag at a great price point that could work for most people needing this style/size. If like me you want to jazz it up a bit, there’s plenty of room to hang bag charmies and chains and the canvas is even easy to hotfix rhinestones to. Would also make a good gift and especially if someone is traveling or moving as I love this size for travel to carry all the extras. I’m very happy with the quality, color, size and comfort.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026

recommand products