[dre99gsx]

Just replaced my Z4 fuel pump with a new OEM unit. While I was at it, did some snooping. Turns out the Z4 fuel pumps are made by TI Automotive. Same company used by Walbro. Peeked my interested since I bought a Walbro 450lph pump to replace my current pump (having fuel issues at full boost), and had to do a double take when I noticed the OEM pump looked just like a Walbro unit!

I was surprised when this pump was able to supply enough fuel for my 2JZ swap, around 500whp with 45% Duty cycle at 7krpm (72psi fuel pressure). That's actually quiet impressive for an OEM fuel pump, but it shows these vehicles have enough fuel delivery for forced induction.

The casing is almost identical to the Walbro 450lph F90000267 pump in diameter and length, albeit slightly shorter. The 450lph is an E85 compatible high flow high power usage pump, but also high current draw.

Part #s on the pump: BMW 1614 7165175 , DE 7 50049 01, 061520187 120

It seems like the WALBRO TI AUTOMOTIVE TIA400-2 F90000262 FUEL PUMP 400LPH HIGH PRESSURE (UNIVERSAL) is an exact match in dimensions. Pump is rated at 500hp+. Has same electrical connector as well.