Radium Fuel Surge Tanks for External Pumps 20-0081 HVFST High Volume
Radium Fuel Surge Tanks for External Pumps 20-0081 HVFST High Volume is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
MASSIVE RANGE
Over 20,000 performance & automotive SKUs for European, JDM, American, Korean and more
NATIONWIDE FAST SHIPPING
Quick dispatch across Australia with reliable tracked delivery
AUSSIE SUPPORT & EXPERTISE
Local customer service and technical assistance from our team of enthusiasts
A fuel surge tank (FST) is designed to prevent fuel starvation to the engine on vehicles with inadequate fuel tank baffling. The FST fuel pump(s) feed the fuel rail(s). The volume of fuel inside the surge tank acts as a buffer to always keep the FST pump supplied with fuel. This volume is maintained by the main fuel tank's pump as well as the fuel returning from the fuel pressure regulator. Excess fuel in the surge tank is returned back to the vehicle's main fuel tank.
The surge tank also provides a quick and easy way to upgade any standard fuel system with a compact size. This is an excellent fueling solution for vehicles installing large demand power upgrades such as forced induction.
All RADIUM FSTs Include:
-Extruded and Machined 6061 Aluminum 1.5 Liter Canister
-Removeable O-Ring Sealed Billet 6061 Aluminum Caps
-Anodized and Laser Engraved
-6AN Feed and Return Fittings (High Volume FST uses -8AN)
-Stainless Steel Hardware
-Factory Pressure Tested Before Shipment
-Lifetime Warranty on all Radium components
FST for External Fuel Pumps
Radium Engineering "pumpless" FSTs were designed for users that already have a secondary external fuel pump. It provides a reservoir from which an external pump can draw from. It features a single or dual anodized aluminum pick-up tubes rather than an integrated internal fuel pump. Thus, this FST model does not include a bulkhead wiring adapter so it is not suited to be used with a fuel pump inside of it. This surge tank is most effective when mounted vertically, however it can be tipped up to a 45 degree angle. Radium does not recommend mounting this surge tank horizontally, as the pick-up may be prone to drawing in air pockets.
The High Volume fuel surge tank (HVFST) is an ideal option for very high flow external fuel pumps requiring a large reservoir and feed line. It must be mounted as near vertical as possible. A mounting bracket is not needed with the HVFST.
All external pump fuel surge tanks require a "lift pump" to supply them with fuel. Excess fuel is then routed back to the OEM fuel tank or fuel cell. The pump feeding the engine, then draws it's fuel from the surge tank, with excess returning from the regulator back to the surge tank.
Can I return a product after install?
Once a product has been installed, used or fitted it is no longer returnable.
How long do I have to return a product?
Customers have 7 days inclusive from the day they receive their order to lodge a “Return Request” with ModsDirect. If the return form is approved (notification by email) the item must then be returned within 21 days. All returns must be trackable.
Please note that exchanges, refunds or credits will NOT be processed until the returned product(s) is received by ModsDirect.
Where do items need to be returned to?
After submitting a “Return Request” form, ModsDirect will be in touch via email to confirm details for return.
How do I return items?
All returns must be returned to ModsDirect by courier or post. All returns must be trackable. In some instances, ModsDirect may offer a return label.
What about restocking fees?
All returns will incur a fee of 15%. This is to cover fees incurred by ModsDirect for payment processing and handling. We are at the mercy of paying for services used at our website regardless of whether the order remains completed or reversed.
Who pays for return shipping?
All return shipping costs are the responsibility of the customer. However, if a customer has received the incorrect product, ModsDirect will cover return fees and provide a courier pickup at no cost to the customer.
Exchange, Credit or Refund?
If a customer requests a return, they may be eligible for either an exchange, credit or refund based on the nature of the return and product availability. If refunding, moneys will be returned to the customer via the original payment gateway used at checkout.
Can I drop a return off to ModsDirect?
Sorry, no in-store return option is presently available.
I damaged the packaging during unboxing, can I still return?
Unfortunately not. All packing materials must be in resalable condition for a return. Some minor damages such as a neat cut of a package seal may still be eligible for return. Please include a photo of the packaging with your Return Request form.
By purchasing from ModsDirect you agree to the Return Policy outlined above.
The “Vehicle Fitment” tab found on ModsDirect product listings are to be used as a guide ONLY. ModsDirect does not take responsibility for any misinformation on the Vehicle Fitment tab. The customer must ensure proper and correct fitment on their vehicle prior to ordering. If any errors are found in any product, you are encouraged to inform ModsDirect by clicking here.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.


