Spool Stage 3 DIY Low-Pressure Fuel Pump – BMW B58 Gen 1
Spool Stage 3 DIY Low-Pressure Fuel Pump – BMW B58 Gen 1
Spool Stage 3 DIY Low-Pressure Fuel Pump for BMW B58 Gen 1 adds a secondary boost-activated low-pressure pump using Spool's DIY hardware package.
- Genuine Walbro 450 secondary pump
- Billet aluminium pump holder
- Quick-connect fuel hose and fitting package
- Hardware required for the secondary-pump installation
- Selectable secondary-pump activation harness
Secondary Pump Activation: choose Hobbs switch, ReFlex plug-and-play or ReFlex flying-lead activation. All three supplier configurations are separate Shopify variants even though their selling price is identical.
Fitment: supplier/reseller documentation confirms F30/F31/F34 340i and F32/F33/F36 440i B58 Gen 1 applications. Confirm VIN before ordering where fuel-tank hardware differs.
Dispatch: Special order — allow 2–3 weeks.
Product System
- Fuel System
Vehicle Fitment
- BMW 3 Series F30 Lci B58
- BMW 3 Series F31 Lci B58
- BMW 3 Series Gt F34 B58
- BMW 4 Series F32 Lci B58
- BMW 4 Series F33 Lci B58
- BMW 4 Series Gran Coupe F36 Lci B58
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.
Available Options
Secondary Pump Activation
- Hobbs switch secondary pump activation
- Reflex controller - plug and play secondary pump activation
- Reflex controller flying lead secondary pump activation
Supplier Part Numbers
SP-B58-LPDIY-HOBBS, SP-B58-LPDIY-REFLEX-PNP, SP-B58-LPDIY-REFLEX-FLY
Built by Boost & Tune Support
BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.