SKU: 31121640976

FST-R, TI AUTOMOTIVE E5LM, PUMP NOT INCLUDED

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Description

FST-R, TI AUTOMOTIVE E5LM, PUMP NOT INCLUDEDRADIUM DOES NOT OFFER A WARRANTY ON ANY FUEL PUMPS! FUEL PUMPS CAN BE RETURNED IN UNUSED CONDITION WITHIN 30 DAYS OF PURCHASE. SEE TERMS AND CONDITIONS FOR MORE INFORMATION. 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 feeds 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

RADIUM DOES NOT OFFER A WARRANTY ON ANY FUEL PUMPS! FUEL PUMPS CAN BE RETURNED IN UNUSED CONDITION WITHIN 30 DAYS OF PURCHASE. SEE TERMS AND CONDITIONS FOR MORE INFORMATION.

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 feeds 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 (lift) pump as well as the fuel returning from the fuel pressure regulator.

In the case of the FST-R, the regulator is built in to the surge tank and is recirculating fuel internally. Excess fuel in the surge tank is returned back to the vehicle's main fuel tank.

Installing a surge tank is also an easy way to upgrade the fuel pump of a vehicle without opening or modifying the OEM fuel tank.

Need help selecting a fuel pump configuration for your vehicle?

RADIUM FST-R FEATURES
-Full CNC aluminum construction with O-ring sealed interfaces
-Anodized for compatibility with all fuel types
-Integrated adjustable fuel pressure regulator with 1:1 vacuum reference
-Interchangeable regulator orifice sizes to match output of different pumps
-Nickel-Plated Electrical Connector with 24" Flying Leads
-Assembled with stainless steel hardware
-Three 6AN male fittings

RADIUM FST-R
The FST-R (Fuel Surge Tank–Regulated) is an all new design that houses a single internal fuel pump and has an integrated fuel pressure regulator machined into the top cap. The high-flow regulator is adjustable and features interchangeable orifice sizes. This revolutionary idea eliminates the need for an external fuel pressure regulator along with the extra fittings and hoses. This simplifies the installation, reduces overall cost, reduces weight, and eliminates potential leak points in the fuel system. Furthermore, this system permits cooler fuel temperatures as the fuel is not returning from the hot engine bay. Like all Radium fuel surge tanks, this universal product can be used on any fuel injected application and is compatible with all fuel types. Additional details on the design of the FST-R can be found here.

The FST-R can be configured with all 39mm fuel pumps from many leading manufacturers. Note: The FST-R is not available in dual-pump configurations. If the pump is purchased as part of the FST-R, the surge tank will come fully assembled and will be pressure tested for leaks and ready to be installed. If the pump is purchased elsewhere, some assembly will be required.

Please see the MORE DETAILS tab on this page (above) for additional info on plumbing a FST-R.

The side port is the regulated pressure output and is plumbed directly to the fuel rail(s). No additional fuel pressure regulator is required. Pressure adjustment is done using the adjustment screw located on the top cap of the regulator unit. A vacuum line hooks up to the nipple on the FST-R to achieve 1:1 vacuum reference. Note: returnless fuel systems commonly use a constant fuel pressure. In this case, the vacuum reference hose is not required.

The FST-R is no taller than a standard fuel surge tank with hoses installed.

Two interchangeable orifices are included with calculated flow diameters to match the fuel pump flow to the regulator. Furthermore, this added precision will resist diaphragm flutter and optimize pressure stability.


A fuel pressure gauge is needed in order to set and monitor fuel pressure and should be located along on the output line or at the fuel rail. The Radium universal fuel pressure gauge is perfect for this duty. Shown above is the gauge with the optional in-line Tee fitting.

For the 20-0368-00 Ti Automotive E5LM FST-R, a 20-0598 check valve is included to prevent backflow, as shown above.

Shipping Notes
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Exchange/Return Notes
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SKU: 31121640976

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A Place for Us is a heart-felt story of love, redemption and second chances.
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Reviewed in the United States on August 12, 2025
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★★★★★ 5
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Oh! 15 gold stars for this one! This book is so poignant and so very brave and authentic! This book is a permission for us to choose what we will and will not accept in our relationships. This book is more than hope, this book is determination! Pure driven determination to not settle, but to go to the mat to have our life the way we want we want it. I cannot over recommend this book. Thank you, Patricia Grayhall! Keep writing!
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Reviewed in the United States on June 8, 2025
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Cecilia Lim
Battle Creek, US
★★★★★ 5
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Format: Paperback
A Place for us is a beautifully crafted and deeply moving love story about two women--one American, one British--who first meet in their youth and reconnect decades later. At its core, the novel portrays their struggle to navigate restrictive immigration laws in pursuit of a life together. Their journey highlights the urgent need to protect and legalize same-sex marriage, especially at a time when such rights feel increasingly precarious. A timely and relevant read.
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Reviewed in the United States on August 14, 2025
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Maggie May
Belleville, US
★★★★★ 5
So good
Format: Paperback
RATING : ⭐️⭐️⭐️⭐️⭐️ SPICE: 🔥🔥 Hot damn Hannah did it again .if you want to read more sapphic romance, this one will absolutely blow your mind! Bryce and Daisy were everything I wanted and more! Fake dating will always be the superior trope, but when it’s forced proximity grumpy x sunshine and the grumpy one is secretly head over heels for the sunshine one, well I’m a damn puddle on the floor! I still can’t decide if I loved Bryce or Daisy more, but I do. Know this might just be my favorite book Hannah has ever written. ☀️ Fake Dating ☀️ Grumpy x Sunshine ☀️ Forced Proximity / Roommates ☀️.Tattoo Artist / Teacher ☀️ So much pining I love Bryce so much. She is a total hard shell but she has such a gooey inside and she showed it so well with Daisy. This whole setup was fantastic, Daisy needs a place to stay so Bryce gets volunteered to give up her spare room. Daisy think Bryce doesn’t like her, but then you get to Bryce’s POV and you realize how down bad she has it for Daisy. Then Daisy proposes the fake date and OMG the tension. The longing. The secret tattoos. I loved every bit of these two figuring each other out. Watching Bryce absolutely melt for Daisy was just so so good. This may be a slow burn, but when it burns…. It’s an inferno. And the tattoo parlor scene is imbedded in my brain forever. Just everything about this made me happy and I will forever love Cherry Peak, these characters and this series! Now bring on Darren!
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Reviewed in the United States on January 10, 2025
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Kristee Cat
Omaha, US
★★★★★ 5
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Format: Paperback
“Calling Daisy Mitchell mine is a dream that I never planned on coming true but always hoped would.” Gahhh my first FF and I’m hooked! Thank you Hannah! Daisy and Bryce are as opposites as can be, one is pure sunshine and the other is as icy as can be but they couldn’t be more perfect for each other! I love the slow burn with all the sexual tension as they pretend to date while living together. Love the way they take care of each other, the love and admiration so evident in the way they touch and look at each other. Their nicknames for each other is just so cute and perfect! I love these two so much! Such a great addition to the Cherry Peak series! We get more of Johnny, who happens to be Daisy’s twin and I just can’t get enough of him either, he’s just so fun. And of course we get to see more of the rest of gang. Love these found family and I can’t wait for more!
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Reviewed in the United States on January 19, 2025

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