Installing the high pressure line between the high pressure pump and the rail for cylinders 1 to 6

WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.

Insert and install the high pressure line (1) .
Tighten the union nuts (arrows) with the special tool 0 495 280 (13 0 140).

TIGHTENING TORQUE SPECIFICATIONS

High pressure line between the rail and the high pressure pump
M14x1.5	tightening torque	33 Nm

Courtesy of BMW OF NORTH AMERICA, INC.