
The Dorch Engineering DS25 is the "Stage 2.5" high pressure fuel pump for the Gen1 B58, replacing the popular DS2. Redesigned from the ground up with a reworked pressure chamber, spring rates and plunger depth, it delivers more flow and even greater reliability while remaining under full control of the DME, just like the factory pump.
Designed to run efficiently at up to 250 bar to make the most of upgraded direct injectors, the kit uses exact OEM hose routing for zero interference when changing coil packs or spark plugs, and includes a 250 bar hardline to connect to the fuel rail – no cutting, bending or crimping required.
Please note:
- Software changes are required to run this pump. Bootmod3, MHD and MG Flasher users can simply select the Dorch pump upgrade when flashing; otherwise a custom WinOLS calibration will be needed.
- Only suitable for Gen1 B58 vehicles up to the 2019 model year – not compatible with 2020-on B58 vehicles.
Features
- DS25 flow potential: up to 750whp on petrol / 550whp on E85
- With the Dorch +40% camshaft (lift kit) upgrade: up to 1000whp on petrol / 770whp on E85
- 250 bar operating pressure
- True plug and play OEM fitment with full DME control
- Exact OEM hose routing – no interference with coil packs or spark plugs
- Kit includes: Dorch HPFP with hardware, Dorch high pressure line, PTFE low pressure line, low pressure hose bracket and plug and play adapter harness
- Dorch Engineering lifetime warranty
- Backed by Dorch Engineering's in-house calibration engineer and technical support
Fitment
- BMW F20 / F21 M140i (inc. xDrive)
- BMW F22 / F23 M240i (inc. xDrive)
- BMW F30 / F31 / F34 340i (inc. xDrive)
- BMW F32 / F33 / F36 440i (inc. xDrive)
- BMW G30 / G31 540i (inc. xDrive) *
- BMW G32 640i GT (inc. xDrive) *
- BMW G11 / G12 740i (inc. xDrive) *
- BMW G01 X3 M40i *
- BMW G02 X4 M40i *
- * Up to 2019 model year (Gen1 B58) only. Not compatible with 2020-on / Gen2 B58 vehicles.