The Shacman Oil-Bathed Air Filter, bearing the precise OEM part number DZ91259190042, is a heavy-duty, two-stage air filtration system engineered to provide superior engine protection in the most demanding and dusty operating environments. This robust component is designed specifically for Shacman commercial trucks, utilizing an oil-bath pre-cleaner followed by a dry paper main filter element to achieve near-total removal of harmful airborne contaminants. Unlike conventional dry filters, the DZ91259190042 employs a viscous oil layer to trap and retain heavy dust particles before they reach the primary filter, significantly extending service life and maintaining optimal engine airflow. This design is critical for vehicles operating in construction, mining, agriculture, and unpaved road conditions where air can contain extremely high concentrations of abrasive silica dust.
As a genuine Shacman component, the DZ91259190042 ensures perfect integration with the truck’s air intake system, maintaining the designed airflow characteristics and protecting the engine from premature wear. The ingestion of unfiltered dust is a primary cause of accelerated cylinder, piston ring, and turbocharger wear, leading to increased oil consumption, loss of power, and costly overhauls. This oil-bath filter acts as the first and most critical line of defense, safeguarding the engine’s longevity and operational efficiency. For fleet managers and owner-operators in harsh climates, the DZ91259190042 is not just a filter; it is an essential investment in engine durability, fuel economy, and reduced total cost of ownership.
| Parameter | Specification |
|---|---|
| OEM Part Number | DZ91259190042 |
| Component Name | Oil-Bathed Air Filter Assembly |
| Brand | Shacman |
| Filtration Type | Two-Stage: Oil Bath Pre-cleaner + Dry Paper Main Filter |
| Efficiency Rating | ≥ 99.5% (Based on ISO 5011 Standards) |
| Air Flow Capacity | Up to 1200 m³/h (Designed for High-Displacement Diesel Engines) |
| Oil Capacity (Sump) | Approximately 1.5 – 2.0 Liters (SAE 30-40 Engine Oil) |
| Primary Filter Element | Pleated Paper Cartridge, Replaceable |
| Housing Material | Heavy-Gauge Steel with Corrosion-Resistant Coating |
| Compatibility | Shacman X3000, F3000, M3000 Series in High-Dust Applications |
The DZ91259190042 operates on a proven two-stage principle. In the first stage, incoming air is drawn into the filter housing and directed through an oil bath. The air makes a sharp turn, forcing heavier dust and debris to be flung into the viscous oil reservoir where they are trapped.
This pre-cleaning stage removes the bulk of the particulate matter, particularly large and abrasive particles. The partially cleaned air then rises through a mesh screen, which removes oil droplets, before entering the second stage.
The second stage consists of a high-efficiency dry paper filter cartridge. This final barrier captures the remaining fine dust, ensuring only clean, contaminant-free air reaches the engine’s intake manifold. This dual approach drastically reduces the load on the paper element.
The oil in the sump is not just a barrier; it is an active cleaning medium. As dust particles impact and mix with the oil, they agglomerate and settle at the bottom of the cup. The correct oil level and viscosity are critical for optimal performance.
Regular maintenance involves draining the accumulated sludge from the oil cup and refilling with fresh oil. This process is far more cost-effective than constantly replacing a clogged dry filter in extreme conditions.
The primary benefit is dramatically reduced engine wear. By preventing abrasive dust from entering the combustion chamber, the filter protects cylinder walls, piston rings, and valve seats. This preserves engine compression and power output over hundreds of thousands of kilometers.
Turbochargers are especially vulnerable to dust. Their high-speed impellers can be eroded by fine particles, leading to imbalance, reduced boost pressure, and eventual failure. The DZ91259190042 provides essential protection for this expensive component.
Clean air also promotes more efficient combustion. With the correct air-fuel ratio maintained, fuel burns completely, leading to better fuel economy, lower emissions, and reduced carbon deposits on injectors and valves.
In extremely dusty environments, a standard dry filter may need weekly replacement. The oil-bath pre-cleaner in the DZ91259190042 extends the service life of the main paper cartridge by a factor of 3 to 5 times or more.
This translates to significantly lower filter element costs and less vehicle downtime for maintenance. The economic advantage over the long term, especially for large fleets, is substantial.
The filter housing is constructed from thick, durable steel to withstand vibration, engine heat, and potential impact. All seams are welded or sealed to prevent air leaks, which would bypass the filtration process entirely.
The oil cup is securely attached with a clamp band and uses a reliable gasket to prevent leaks. The main filter cartridge is housed in a separate, sealed compartment to ensure all air passes through the media.
Mounting brackets are integral to the housing, designed for a secure and rattle-free fit on the Shacman truck’s frame or engine bay. The entire assembly is built to last the lifetime of the vehicle with proper care.
Routine maintenance is straightforward but crucial. The oil cup should be inspected and drained at intervals specified in the Shacman manual, typically every 50-100 engine hours in severe dust, or during regular oil changes.
To service, remove the oil cup, clean it thoroughly with solvent, and refill to the indicated mark with the recommended viscosity of clean engine oil. Never overfill, as this can lead to oil being drawn into the intake.
The main paper filter element should be replaced based on the restriction indicator gauge mounted on the intake system or according to the maintenance schedule. Never tap or blow compressed air on the paper element to clean it.
Most Shacman trucks equipped with this filter have a restriction gauge. This gauge shows the pressure drop across the filter. A reading in the red zone indicates excessive clogging and the immediate need for service.
Visually inspecting the oil cup for an excessive amount of thick sludge is another good indicator. Regular checks prevent the filter from becoming a restriction that can choke the engine, causing power loss and increased fuel consumption.
The DZ91259190042 is specifically designed for off-highway and severe-duty applications. This includes mining and quarrying operations, construction sites, agricultural work, desert driving, and any region with unpaved, dusty roads.
Fleet operators in regions like the Middle East, Africa, Central Asia, and Australia find this filter indispensable. It is also recommended for trucks operating near cement plants, grain handling facilities, or demolition sites.
For on-highway trucks operating in relatively clean environments, a standard dry air filter may be sufficient. However, for mixed fleets or trucks that venture off-road, the oil-bath filter provides a critical safety margin.
The oil-bath system is effective in both hot and cold climates. In freezing conditions, it is important to use the correct oil grade to prevent thickening. The system is less susceptible to moisture-related issues compared to some advanced dry filters.
Its mechanical simplicity is a key advantage in remote areas where replacement paper elements for high-tech filters might not be readily available. Basic engine oil for the sump is universally accessible.
By maintaining a lower average restriction than a heavily loaded dry filter, the DZ91259190042 helps the engine breathe more easily. This reduces pumping losses, directly contributing to better fuel efficiency under load.
Consistent, clean airflow ensures the engine management system can maintain optimal tuning. This avoids the rich fuel mixtures that sometimes occur when the ECU compensates for a perceived air shortage from a dirty filter.
The overall reliability of the engine is enhanced. Avoiding dust ingestion eliminates a major variable that leads to unpredictable breakdowns and expensive, unscheduled repairs, keeping trucks in revenue-generating service.
Every DZ91259190042 filter is manufactured to Shacman’s strict quality standards. The paper filter media is tested for porosity, burst strength, and efficiency. The housing undergoes leak and pressure testing.
Using a genuine Shacman filter guarantees that the airflow characteristics match the engine’s calibration. Non-genuine filters may have different restriction profiles, potentially affecting performance and triggering fault codes.
The fit and finish are precise, ensuring a perfect seal on the truck’s intake piping. This is critical; even a small leak post-filter allows unfiltered air to enter, nullifying all the benefits of the filtration system.
Choosing the genuine DZ91259190042 is choosing engineered protection specifically for your Shacman truck. The design is the result of extensive testing in real-world conditions to provide optimal balance between filtration efficiency and airflow.
Aftermarket or universal oil-bath filters may not have the correct inlet/outlet size, mounting points, or internal baffling. Incorrect installation or fit can lead to performance issues and engine damage.
Investing in this genuine component protects your much larger investment in the engine. It is a relatively low-cost part that plays a disproportionately high role in determining the longevity and profitability of your truck.
The Shacman Oil-Bathed Air Filter, OEM number DZ91259190042, represents the gold standard in engine air filtration for severe-duty applications. Its two-stage oil-bath and paper filtration technology offers unmatched protection against abrasive dust, directly extending engine life and reducing operating costs.
For any Shacman truck facing a dusty environment, this filter is not an option but a necessity. It is a core component of a proactive maintenance strategy focused on maximum uptime and minimum cost per kilometer.
To ensure you are using the correct filtration solution for your specific truck model and operating conditions, please use the contact methods above. Equip your Shacman with the ultimate defense for its heart—the engine.
