BMW B46 & B48 Spool FX-200 Stage 2 High Pressure Fuel Pump

The Spool FX-200 is a Stage 2 upgraded high pressure fuel pump for BMW B46 and B48 engines that delivers about double the flow of stock.

Why you need it

The stock high pressure pump on the B46/B48 is a major limit when tuning for more power. The FX-200's larger bore roughly doubles flow, giving you the fueling for bigger turbos and higher ethanol blends. It replaces Spool's earlier FX-180 and needs no cutting, splicing or modification.

Fits

• BMW models with the B46 engine
• BMW models with the B48 engine

Features

• About double the flow of the stock pump
• E85 compatible
• 100% plug and play

Good to know

Choose at checkout whether to add the Spool wireless ethanol analyzer kit, use one you already have, or skip it. You can also add the Spool 10-micron filter unit. The pump requires calibration changes, and they must be in the tune before you start the car with the pump installed. Spool can share calibration details with your tuner but does not write custom tunes. Proper low pressure fueling matters on a direct injection system: the high pressure pump is lubricated by fuel, and a weak low side can damage the piston and bore. Plan a low pressure pump upgrade alongside this pump. Professional installation is recommended.