Fuel-It Stage 2 LPFP In-Tank Fuel Pump Upgrade Kit for BMW Z4 E89 35i N54 (2008-2016) - Walbro/TI Automotive 450 F90000274 Plug & Play Low Pressure Pump, E85 Ethanol Safe - Optional 525 Hellcat F90000285 - Drop-In Fuel Pump Module/Basket

Fuel-It Stage 2 in-tank fuel delivery module for BMW Z4 E89 35i - ethanol safe, direct-fit performance upgrade

Unlock consistent fuel supply for your tuned Z4 with this complete in-tank assembly from Fuel-It. Built around the TI Automotive Walbro F90000274 pump and available with the higher output F90000285 option, this drop-in unit increases flow, stabilises low-side pressure under boost and supports ethanol blends without drama. Ideal for N54-powered Z4 35i drivers seeking a dependable, high-flow solution for remapped or hard-driven cars.

We run this hardware on customer cars and it just works - strong delivery, quiet operation and verified reliability. Every assembly is flow tested before dispatch so you can fit with confidence.

Why choose this upgrade

• Direct-fit in-tank module - no cutting, no wiring hacks, no headaches
• Ethanol safe construction - E85 ready and suitable for ethanol blends
• Higher flow than stock - maintains low-side pressure for tuned setups
• Includes enlarged fuel lines and fresh filter for optimum supply
• Each unit is bench tested and verified prior to shipping

Pump options and part numbers

• Included: TI Automotive Walbro 450 - Part No. F90000274
• Optional upgrade: TI Automotive Walbro 525 - Part No. F90000285

Build options

• New Build - Brand new BMW bucket assembly fitted with a new Walbro 450 and new filter. No core payment required. Eligible for a $150 core refund when you return your original bucket.
• Rebuild - Send us your stock unit to be refurbished with the upgraded pump to avoid a core deposit. Ships within 72 hours of receiving your bucket.
• Trade-in - Limited availability on Z4 assemblies. A $300 core deposit is charged and refunded when we receive your original unit. Contact us to confirm current stock.

Core return guidance

• Returned cores must be standard and undamaged. The original pump does not need to function.
• Refund schedule after you receive your Stage 2 kit:
  • Within 2 weeks - full core refund
  • Within 3 weeks - $250
  • Within 4 weeks - $200
  • Over 4 weeks - $150
• All Stage 2 assemblies are professionally rebuilt OEM buckets and may show signs of disassembly. Every unit is flow tested before dispatch.
• Higher output pumps draw additional current. If your EKP controller is weak it may overheat or shut down and could need replacement.

Compatibility

• BMW Z4 E89 35i - 01/2008 to 08/2016
• N54 twin-turbo applications in the E89 Z4 35i

Fitment check

We will confirm suitability before shipping. Add your UK number plate or last 7 of the VIN at checkout and we will verify compatibility for your Z4 35i.

Installation and support

Professional fitting recommended. MJ Modifications offers expert installation in Warwickshire - request a quote at info@mjmodifications.co.uk.

Tip: a tank lock ring tool makes the job quicker and cleaner.

Real-world results

We have fitted this Fuel-It assembly on multiple Z4 35i builds. Feedback has been excellent - stronger low-side supply, clean fuelling on ethanol blends and great reliability on mapped cars. It is a trusted upgrade for owners who want worry-free fueling with room to grow.

Manufacturer and warranty

Supplied by Fuel-It with manufacturer warranty.

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