BMW S58 G80 M3, G82 M4, G87 M2 & X3M Spool Stage 3 DIY LPFP Kit

The Spool Stage 3 DIY low pressure fuel pump kit adds a second in-tank pump to S58 BMW models with a true drop-in install.

Why you need it

The stock low pressure pump is the first thing to run short when an S58 is tuned hard or run on ethanol. Spool's kit needs no drilling or cutting of the fuel bucket: a three-piece bracket locks into the factory tank assembly, and the supplied hoses tee into the factory fuel line with the included fittings, so it is very DIY-friendly.

Fits

• BMW G80 M3 (S58)
• BMW G82 & G83 M4 (S58)
• BMW G87 M2 (S58)
• BMW F97 X3 M (S58)
• BMW F98 X4 M (S58)

Features

• No drilling or cutting of the fuel bucket
• Three-piece bracket that locks into the factory tank assembly
• Tees into the factory fuel line with included fittings and hoses
• Choice of Walbro 450 or Walbro 525 pump
• Three activation harness options

Good to know

Add your vehicle's year, model or VIN in the order notes so the correct tank bracket is supplied; the bracket may differ from the photos. The Walbro 450 covers most street, drag and high-performance builds; the 525 is for higher power and should be paired with a PWM harness, since its current draw can overload a standard relay. Harness choices: Reflex flying lead (ground trigger on Aux 2), Reflex plug-and-play (power and ground, may also work with Rev2 BM3), or the Spool Hobbs switch, which uses the included 10 psi switch for boost activation without a controller. A supporting tune is required.