Radium Engineering Fuel Hanger Surge Tank (Regulated) - BMW E9x 3-Series N54/N55 (Pump Not Included)

The Radium Engineering Fuel Hanger Surge Tank for the BMW E90/E91/E92/E93 3-Series (N54/N55) is a drop-in surge tank that installs inside the factory fuel tank, opposite the OE pump, to eliminate fuel starvation during hard driving and support high-horsepower pump upgrades. It holds one or two high-flow aftermarket pumps and can be configured as a built-in-regulator deadhead system or converted to a return-style setup. E85-compatible. Pump not included.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy