B58 Gen1 DS25 HPFP Upgrade

The Dorch Engineering B58 Gen1 DS25 HPFP Upgrade represents the next generation of high-pressure fuel pumps for the B58 engine, building upon previous successful designs. This Stage 2.5 pump has been completely redesigned and optimized from the ground up, featuring updated external packaging for exact OEM hose routing, eliminating interference during maintenance. Internally, the DS25 pump boasts a re-worked pressure chamber, revised spring rates, and an optimized plunger depth to maximize volumetric efficiency. This results in a more reliable and higher-flowing B58 pump. The pump is designed to operate efficiently up to 250 bar, enabling maximum flow potential from upgraded direct-injection injectors. Software changes are required, with options to simply check a box for pump upgrades when using Bootmod3, MHD, or MG Flasher tuning platforms. Dorch Engineering emphasizes its commitment to quality with a lifetime warranty on their pumps, attributed to their inherent reliability. They also highlight their unparalleled 24/7 customer support from professional engineers and tuners, along with dedicated tuning support from an in-house calibration engineer. The kit includes the HPFP with hardware, a Dorch High Pressure Line, a PTFE Low Pressure Line, a Low Pressure Hose Bracket, and a Plug and Play Adapter Harness. Important Fitment Note: This kit is only compatible with model years up to 2019 and is not compatible with Gen2 B58 vehicles. It fits various BMW models including the 2 Series F22/F23 (2014-2021) M240i/xDrive, 3 Series F30/F31/F34 (2012-2019) 340i/xDrive, 4 Series F32/F33/F36 (2014-2019) 440i/xDrive, 5 Series G30 (2017-2023) 540i/xDrive, and 7 Series G11/G12 (2016+) 740i/xDrive.