Description
Product Overview
The mechanical fuel injector relies on a high-pressure oil pump to deliver fuel to open the internal needle valve, completing atomized injection and stabilizing the single-cylinder fuel supply volume. Under long-term high-intensity agricultural operations, high-temperature vibrations on construction sites, and diesel contamination flushing conditions, the needle valve sealing surface wears out, the sealing components age and harden, resulting in fuel leakage, coarse atomized particles, imbalance in fuel supply among cylinders, power loss, and diesel seeping into the engine oil to dilute the lubricating oil. This product has standardized specifications for injection opening pressure, installation thread, and sealing dimensions. Overall replacement for maintenance can restore the equipment's power, and it is suitable for small tractors, micro excavators, and small diesel generator sets for mechanical direct injection diesel engine maintenance.
Core Advantages of the Single Product
Segmental hardening of the black metal cylinder body, resistant to high temperatures, wear, and deformation
Gated quenching metal body, surface treated for high-temperature oxidation resistance, capable of withstanding high-pressure fuel impact for a long time, less prone to rust and deformation in alternating hot and cold engine compartments, reducing high-pressure fuel leakage.
Hexagonal lock screw at the middle section, adjustable torque for disassembly and assembly without damaging the valve body
Integrated external thread combined with hexagonal limit platform, compatible with standard socket wrenches, uniform and controllable tightening torque, avoiding valve body deformation and thread slippage, ensuring the sealing effect of the cylinder cover installation.
Thickened front end copper sealing gasket, preventing gas and fuel leakage
Pre-installed copper flat gasket at the nozzle position, with a soft and moderate texture, after assembly, it tightly fills the gap between the fuel injector and the cylinder cover, providing dual barriers against high-temperature gas backflow and high-pressure diesel leakage outward.
Complete set of sealing accessories, all included in one set without additional purchases
Each set comes with a copper guide flow gasket and a black oil-resistant O-ring, replacing aging sealing components simultaneously, eliminating oil circuit leakage and intake air leakage faults from the source, simplifying the maintenance and supply process.
Hardened carbide micro-hole nozzle, ensuring thorough atomization and reducing carbon deposits and black smoke
Precise micro-hole atomization structure at the head, high-pressure diesel is broken down into uniform and fine oil mist, matching the combustion chamber for complete combustion, reducing carbon accumulation in the cylinder, optimizing fuel consumption and exhaust emissions.
Factory-set pressure calibration for the entire machine, no need for secondary adjustment during installation
Independent on-machine detection of opening pressure, atomization effect, and high-pressure sealing performance of a single nozzle, parameters are unified for the same batch, after replacement, the engine runs smoothly, significantly reducing maintenance and debugging time. List of Accessories
105158-5002 Complete mechanical injector body 1 piece
Pre-installed purple copper sealing gasket 1 sheet
Matching copper guide plate gasket 1 piece
Matching black oil-resistant sealing O-ring 1 piece
Tail transparent plastic dust-proof protection cap 1 piece Applicable scenarios
This product is suitable for medium-sized agricultural tractors with mechanical direct injection fuel supply system, mini wheeled excavators, and small fixed diesel generators. It is applicable for continuous farming in fields, short-distance operations at construction sites, and diesel engines operating in outdoor environments with alternating cold and hot temperatures and dust corrosion. It is used for replacing the injection components of diesel engines.
Product Basic Parameters
Product Name: 105158-5002 Mechanical Direct Injection Injector Assembly
Part Number: 105158-5002
Main Material: Tempered hardened alloy steel housing, tungsten carbide atomizing nozzle, copper sealing gasket, fluororubber sealing O-ring, plastic dust-proof protective cap
Structural Feature: Segmented stepped black metal cylinder body, central hexagonal threaded locking platform, front copper sealing gasket, rear transparent dust-proof protective cover, matching guide flow gasket and sealing rubber ring
Application Conditions: Medium-high pressure mechanical reciprocating injection, cabin high-temperature vibration, diesel with impurities corroding mechanical direct injection diesel engine
Product Status: New and complete injector assembly, factory completed with all sets of bench calibration and testing for atomization accuracy, high-pressure sealingity, and opening pressure
Packaging: Single independent shock-proof hard tube packaging, dust-proof protection at both ends to prevent磕碰 damage to the precise working surface of the nozzle. The accessories are packaged separately in bags， supporting single-piece retail， bulk purchase in boxes， and suitable for cross-border small package logistics.
