1154158481 6BG1 Engine Injection Pipe

Part number 1154158481 is the original fuel injection pipe provided by ISUZU (Isuzu) for the 6BG1 series diesel engine. This component is a high-pressure fuel injection pipe that connects the fuel injection pump to the fuel injector. Its universal models cover various mainstream medium-sized hydraulic excavators equipped with 6BG1 engines, mainly including Hitachi ZX200-3, ZX220-3, ZX270-3, Komatsu PC200-8, PC220-8 and other 20-22 ton models. As the designated pipeline of the original factory, its unique bending shape, length, and two end interfaces strictly correspond to the layout of specific cylinder sequences on the engine
 

This product is a high-pressure oil pipe made of cold drawn seamless steel pipes. The pipe body is a silver gray metal pipe with a specific curved shape, and the surface is treated with rust prevention. One end is a threaded joint with a sealed conical surface (usually M12 × 1.5), used to connect the fuel injection pump; The other end is a precision spherical sealed end, which is sealed with a dedicated compression nut. The laser engraving "1154158481" on the tube body is the core identification of its original factory identity. Its inner diameter is about 4mm, outer diameter is about 6-8mm, working pressure is as high as 30-50MPa, burst pressure is ≥ 90MPa, and it can withstand high-frequency pressure pulses of the common rail system. Internally polished with mirror finish to ensure smooth fuel flow; Temperature resistance range -40 ℃ to+150 ℃.

Installation specifications (safety first): 1 Release pressure: Before replacement, the fuel injection pump vent screw must be loosened or the engine must be left to stand for more than 24 hours. It is strictly prohibited to operate under pressure. 2. Cleaning: Use a lint free cloth and specialized cleaning agent to wipe the sealing cone and spherical end of both ends of the joint. 3. Alignment installation: First, manually screw the threaded end into the first button of the fuel injection pump to ensure alignment. 4. Torque tightening: Two open-end wrenches must be used to operate in opposite directions, and the two ends should be tightened according to the torque specified in the maintenance manual (usually 25-35 N · m) to avoid twisting the pipe body.