Spool FX-350 Upgraded High Pressure Fuel Pumps [S63 Gen 2]

Spool FX-350 Upgraded High Pressure Fuel Pumps [S63 Gen 2]

Spool FX-350 Upgraded High Pressure Fuel Pumps [S63 Gen 2] is a high-pressure fuel-pump upgrade that increases high-pressure direct-injection fuel capacity for tuned engines and ethanol-blend applications. It is intended for performance-focused builds where the fuel system, airflow or drivetrain must support demands beyond the factory configuration.

The product is supplied as an application-specific Spool configuration. Check the engine version, body style and selected package contents before ordering. Correct sizing and professional installation are particularly important for fuel-system and engine-management changes.

Technical details

• Plug-and-play construction with application-specific connections
• Requires ECU calibration before start-up
• Manufacturer lifetime warranty subject to product-specific warranty terms
• Manufacturer SKU or variant code depends on the selected configuration

Available options

• No ethanol sensor, Vehicle has Spool ethanol sensor, Add Spool ethanol sensor
• No 10 µm filter, Add 10 µm filter

Examples of compatible vehicles

• BMW 5-series (model years 2018–2023)
• BMW 8-series (model years 2019–2023)

An upgraded high-pressure pump requires the product-specific ECU calibration changes before the engine is started. Make sure the low-pressure fuel system can also support the selected power level.