1318822 Filter Element AS-Air Primary for Caterpillar

The water separator fuel filter is a critical dual-function component specifically designed for diesel fuel systems in heavy construction equipment. It performs two essential

The engine oil filter cartridge is a critical component in the lubrication system of construction equipment engines. Its primary function is to continuously remove contaminants from the engine oil as it circulates. These contaminants include abrasive particles generated during combustion and normal engine operation. By trapping these harmful particles, the filter protects vital engine components—such as crankshaft bearings, camshafts, piston rings, and cylinder walls—from accelerated wear, scoring, and damage. It plays a direct and essential role in maintaining engine health, performance, and longevity.

The heavy equipment engine diesel fuel filter cartridge, or fuel filter element, is a vital component within the engine's fuel system. Its primary role is to clean the diesel fuel before it reaches critical, high-precision components like the fuel injection pump and injectors. It removes solid contaminants (such as microscopic dust, rust, and scale) and, in the case of advanced filters, separates water from the fuel. This protection is essential for preventing wear, corrosion, and blockages, ensuring precise fuel metering, efficient combustion, and reliable engine operation.

The hydraulic oil filter cartridge is an essential component within the hydraulic system of off-road construction machinery, such as excavators, loaders, bulldozers, and cranes. Its primary function is to continuously clean the hydraulic fluid by removing solid contaminants (metal wear particles, dust, seal debris, and other insoluble matter) generated during system operation. This ensures the protection of high-precision components—including pumps, valves, actuators (cylinders and motors), and servo mechanisms—from abrasive wear, jamming, and failure. Maintaining fluid cleanliness is critical for preserving system efficiency, reliability, and the overall lifespan of the hydraulic system.

Our full line of engine parts is built for high-intensity operation. Their excellent durability minimizes unplanned downtime, boosts equipment availability, and keeps your projects on schedule. We aim to constantly innovate and change how the industry looks at replacement parts.
Diesel fuel injectors are critical to the performance and emissions of diesel engines. USTELLA offers a full line of high quality aftermarket fuel injectors and parts for Caterpillar, Komatsu, SANY and XCMG. All the Fuel Injectors meet the performance, emissions, reliability, and durability requirements of the engine. The injector nozzle hole size and shape are manufactured to strict parameters using the latest EDM process and are fully tested with laser optic electronic devices to make sure they are built to the exact specifications. Each USTELLA Injector is engineered for exact precision and durability for long service life.