SHOP ›FUEL ›SPOOL PERFORMANCE FX-350 HIGH-PRESSURE FUEL PUM...
Spool Performance FX-350 fuel pumps pair for BMW S63 F90 M5 M8 X5 M X6 M
SPOOL PERFORMANCE

Spool Performance FX-350 High-Pressure Fuel Pumps (Pair) — S63 (F90 M5 / M8 / X5 M / X6 M)

$5,435.00

Spool Performance FX-350 high-pressure fuel pumps for the Gen2 S63 — a matched pair for the twin-turbo V8's dual-pump direct-injection system. Each is a 390-bar (5,600 psi) pump with a stainless, DLC-coated piston and bore; together about 50% more fuel than the OEM pumps.

What it is

A two-pump kit (one per OEM location), 390 bar. Plug-and-play, lifetime warranty, pairs with Spool's Gen2 DI injectors. Includes both pumps, brackets, an alignment tool, a triple-layer low-pressure line, and a plug-and-play adapter harness + hardline.

Where it fits in the build

High-pressure (DI) side; run it with an upgraded low-pressure in-tank pump and a matching calibration. We tune the engine to the fuel system.

Options

Spool offers a wireless ethanol-content analyzer and a 10-micron inline filter as add-ons — tell us if you want either specced in.

Fitment

Gen2 S63 — F90 M5, F91/F92/F93 M8, F95 X5 M, F96 X6 M. Confirm your chassis in the selector.

Sourcing fueling with the tune? The Fueling Kit — S63 bundles the matched parts + calibration for 8% under à la carte.

Fits engine S63
Fits chassis F10 · F06 · F12 · F13 · F85 · F86 · F90
Category Fuel
Manufacturer Spool Performance
What this is

A Part Recalibration is one focused revision built around the part you just bought. We take logs on your car as it runs now, on your current tune, then make a single full revision so this specific part delivers what it should. Hardware only does its job with a calibration shaped around it.

We bundle that tuning with the part right here, whatever brand the hardware is. If you want a fresh start across all your hardware, a Full Tune is the step up: a new base map, three revisions, and a written report.

This is a bootmod3 calibration. We tune through your own active BM3 license, so you'll need bootmod3 active on your car to load it.

Ships from Boca Raton, FL.

Step up to a Full Tune?

You've added a Part Recalibration to more than one part. At that point a complete tune does more for you: a Full Tune lays down a fresh base map and three revisions so all of your new hardware is dialed in together, with a written report at the end. We can roll your recalibrations into one Full Tune for $395 — below our standalone Full Tune, which starts at $495 for a four-cylinder and $595 for a six.

The Full Tune is a bootmod3 calibration — it loads through your active BM3 license, the same one you confirmed for the recalibration.
WHY WE SHIP SPOOL PERFORMANCE
Spool Performance builds high-pressure fuel pumps for the builds that have outrun what the factory pump can flow. On a big-power direct-injection BMW, fuel supply is often the actual ceiling, and the engine will pull rail pressure long before it runs out of airflow. We ship Spool because their HPFP upgrades are aimed squarely at that ceiling, restoring the supply margin a high-output calibration depends on. This is upper-end fueling hardware — the part you add when the dyno shows the pump, not the turbo, is what is holding the number back.