Description
Product Overview
The fuel injector sleeve is assembled between the cylinder head and the fuel injector, isolating the high-temperature combustion inside the cylinder and preventing the backflow of gas from burning the precision injector. The sealing ring fills the gap to prevent diesel leakage. Under long-term heavy-duty mining, high-temperature, and high-frequency injection conditions, the sleeve may deform and the rubber ring may age and fail, resulting in uneven fuel atomization, excessive black smoke from the engine, power loss, and diesel seeping into the engine oil to dilute the lubricating oil. This product has a uniform inner and outer diameter and taper size that matches the fuel injector of the corresponding model. It does not require replacing the entire fuel injector and is suitable for large mining equipment, long-distance trucks, and large-power diesel generator sets for mechanical fuel injector maintenance and repair.
Core Advantages of the Single Product
Quenched and tempered alloy steel body, resistant to high temperatures, deformation, and wear
Overall quenching and hardening treatment, mirror-polished inner wall, able to withstand continuous high-temperature radiation and high-pressure fuel scouring inside the cylinder, less prone to rust and deformation in harsh dust conditions, providing long-term protection for the internal precision fuel injector components.
Top conical positioning step, assembly centered without deviation
Upper conical limiting structure, after installing in the cylinder head, fixes the radial position of the fuel injector, avoiding eccentric reciprocating injection and ensuring uniform fuel atomization, reducing local carbon accumulation.
Two matching black fluorosilicone sealing rings, multi-layer sealing to prevent leakage
High-temperature resistant, diesel swelling resistant sealing ring, layered filling of the sleeve and cylinder head gap, double barrier against the upward migration of high-temperature gas and outward leakage of fuel, eliminating the dilution of lubricating oil by diesel.
Clear part number engraved on the metal outer wall, quick verification of model during inventory and maintenance
Laser-engraved 8N1831 identification on the metal outer wall, resistant to diesel soaking and repeated wiping without code loss, quick matching of models for storage, on-site maintenance, and avoiding incorrect installation and sealing failure.
Smooth inner wall without burrs, easy to accumulate carbon and clean
Internal through-hole polishing treatment, less likely to accumulate thick carbon in high-temperature environment, simple maintenance and cleaning in the later stage, prolonging the overall service life of the fuel injector.
Complete set of factory assembly, no need for secondary grinding and correction
The sleeve and sealing rubber ring have precise size matching, after replacement, direct assembly is possible, quickly restoring the heat insulation protection and sealing performance of the fuel injector, shortening maintenance time.
Accessory List
1 piece of 8N1831 metal fuel injector sleeve
2 black oil-resistant fluorosilicone O-rings Applicable scenarios
This product is suitable for large mining excavators with mechanical direct injection single-body injection system, heavy-duty wheeled loaders, long-distance heavy-duty freight trucks, high-power fixed diesel generators. It is applicable to the heavy-duty diesel engine fuel injector protection sealing components replacement in environments with 24-hour continuous heavy load, long-distance freight transportation, high-temperature vibration of engine cabin, and dust and impurity diesel corrosion.
Product Basic Parameters
Product Name: 8N1831 Injector Sleeve Kit
Part Number: 8N1831
Main Material: Tempered hardened alloy steel sleeve, oil-resistant fluororubber sealing ring
Structural Feature: Straight cylindrical main body, conical positioning platform at the top, identification code engraved on the outer wall, matching double-layer sealing rubber ring
Application Conditions: High-temperature radiation in the cylinder, continuous high-pressure injection, impurity diesel corrosion of heavy-duty mechanical direct injection diesel engine
Product Status: New complete set of accessories, factory completed with cooperation clearance, high-temperature, high-pressure sealing durability complete bench test
Packaging: Single-piece independent pipe protection packaging, plastic dust-proof covers at both ends protect the cylinder body's precise inner wall, avoiding transportation bumps and scratches, supporting single-piece retail, bulk purchase in boxes, and compatible with cross-border small package logistics.
