Mahle Hydraulic Oil Filter PI8311DRG40

This PI8311DRG40 replacement hydraulic oil filter element is manufactured as an exact, direct-fit substitute for the original MAHLE filter, designed to deliver robust contaminant control and seamless integration into your existing MAHLE filter housing. It provides essential protection for hydraulic and lubrication systems by effectively removing solid particles from the fluid stream, thereby minimizing component wear, maintaining system efficiency, and reducing costly unplanned downtime.

This element is constructed from high-quality stainless steel wire mesh, offering 40-micron surface filtration with a sharp separation boundary. As a surface filter, it reliably captures particles larger than its rated size on the outer surface, providing consistent and predictable filtration performance. With a flow direction from outside to inside, this design promotes even contaminant loading across the entire filter surface, maximizing dirt-holding capacity while maintaining low flow resistance.

• Direct OEM Replacement: Engineered as an exact match for the original MAHLE part number PI8311DRG40, ensuring perfect compatibility and reliable system operation.
• Cleanable and Reusable Wire Mesh Media: The stainless steel wire mesh construction can be cleaned and reused, offering extended service life and reduced consumable costs.
• Outside-In Flow Direction: Promotes uniform contaminant loading across the entire filter surface, maximizing dirt-holding capacity while maintaining low pressure drop and stable flow characteristics.
• Excellent Chemical Compatibility: Compatible with a wide range of hydraulic oils, including phosphate esters, water-glycol emulsions, and various synthetic and mineral-based fluids.

The PI8311DRG40 Replacement Hydraulic Oil Filter Element is specifically designed for use in hydraulic and lubrication systems where MAHLE filtration components are specified. Its primary applications include:

• Industrial Hydraulic Systems: Power units, presses, injection molding machines, and machine tools.
• Lubrication Circuits: Circulating oil systems for bearings, gears, compressors, and turbines.
• Suction and Coarse Filtration: Ideal for installation at pump inlets or as a coarse filter ahead of finer filtration stages, as well as for filtering highly viscous media.
• Cooling Lubricant Filtration: Used as a safety filter in cooling lubricant circuits.
• Steel and Power Plants: Hydraulic systems and lubrication stations in steel mills and power generation facilities.
• Marine and Offshore: Hydraulic systems in marine environments where corrosion resistance is critical.

Huahang Filter is dedicated to engineering replacement parts that meet or exceed original specifications for fit, form, and function. Operating from our modern 26,000㎡ ISO-certified facility, we ensure every component delivers the consistent performance, reliability, and compatibility demanded by industries worldwide.

• Precision Engineering for Guaranteed Compatibility: We meticulously replicate all critical dimensions, sealing profiles, and performance characteristics to ensure a perfect, leak-free installation in your MAHLE filter housing, guaranteeing optimal system integrity from first use.
• High-Quality Stainless Steel Wire Mesh Media: We utilize premium stainless steel wire mesh that provides excellent filtration efficiency, corrosion resistance, and durability. The wire mesh media is cleanable and reusable, offering extended service life and reduced consumable costs.
• Rigorous Quality Assurance & Process Control: Our vertically integrated manufacturing and strict quality management systems ensure each filter offers verified particle capture efficiency and structural durability to withstand system pressure cycles. 
• Global Supply Chain and Technical Expertise: With extensive experience serving international markets, we combine scalable production with deep application knowledge, ensuring reliable product availability and tailored support for your specific operating environment.
• Value-Driven Solution Provider: As a focused manufacturer, we deliver OEM-level performance and protection at a competitive cost, offering excellent lifecycle value and supporting cost-effective, proactive maintenance strategies.

Q: Is this a genuine MAHLE filter?
A: This is a high-performance direct replacement element manufactured by Huahang Filter. It is engineered to provide equivalent fit, filtration efficiency, and performance to the original MAHLE PI8311DRG40 part. The part number is used for reference and identification purposes only.

Q: How can I confirm this filter will fit my specific housing?
A: This product is a direct cross-reference for the OEM part number PI8311DRG40. The surest method is to verify that this exact number is listed in your equipment's service manual, parts guide, or is printed on the filter currently installed in your system. Additionally, you may confirm critical dimensions: 247mm height, 47.5mm outer diameter, and 25.5mm mounting diameter.

Q: What is the filtration efficiency of this element?
A: This element provides 40-micron absolute surface filtration. As a surface filter, it offers a sharp separation boundary, capturing 100% of particles larger than 40 microns on the filter surface while allowing smaller particles to pass. The filtration media is optimized to meet or exceed the performance of the original MAHLE specification.

Q: Can this filter be cleaned and reused?
A: Yes. The stainless steel wire mesh construction is designed to be cleanable. Depending on the contaminant type and operating conditions, the element can be cleaned using methods such as backflushing, ultrasonic cleaning, or solvent rinsing. Proper cleaning and inspection can extend the service life and reduce consumable costs.

Q: Is this filter compatible with synthetic and fire-resistant hydraulic fluids?
A: Yes, the standard stainless steel wire mesh construction is compatible with a wide range of hydraulic fluids, including mineral oils, phosphate esters, water-glycol emulsions, and various synthetic oils. For specialty fluids or extreme conditions, please verify compatibility with your fluid manufacturer or contact our technical support team.

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