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Vacuum Oil Purifier with Complete Accessories The Vacuum Oil Purifier is a high-performance industrial oil purification system designed to remove solid particles, moisture, dissolved water, and air from lubricating oil, hydraulic oil, transformer oil, and other industrial fluids. Supplied with complete accessories, this purification unit provides an efficient solution for oil maintenance, oil regeneration, and contamination control in demanding industrial applications. With a processing capacity of 50 liters per minute, it is suitable for workshops, equipment maintenance centers, power plants, hydraulic systems, and other facilities that require reliable oil purification. Technical Specifications Product Type Vacuum Oil Purifier Accessories Complete Accessories Included Flow Rate 50 L/min Working Pressure 0.6 MPa Vacuum Level ≤ -0.095 MPa Residual Water Content 5–10 ppm Residual Air Content ≤ 0.2% First-Stage Filtration 100 μm Second-Stage Filtration 10–20 μm Third-Stage Filtration 1–3 μm Voltage 380 V AC Frequency 50 Hz Phase Three Phase Motor Power 36 kW Heating Power 24 kW Control System PLC Control Efficient Vacuum Dehydration and Degassing The purifier operates with a vacuum level of ≤ -0.095 MPa, creating an effective environment for removing moisture and air from contaminated oil. After treatment, the residual water content can be reduced to approximately 5–10 ppm, while the residual air content is controlled to ≤ 0.2%. This helps improve oil cleanliness and reduce the negative effects of moisture and air on lubrication performance, hydraulic components, pumps, valves, bearings, and other critical equipment. Three-Stage Precision Filtration The Vacuum Oil Purifier uses a three-stage filtration process for progressive contaminant removal. The first stage uses a 100-micron filter to capture larger solid particles and protect the downstream filtration system. The second stage provides 10–20 micron filtration for finer contamination control. The third stage uses a high-precision 1–3 micron filter to remove very small particles and achieve a higher level of oil cleanliness. This multi-stage design supports stable purification performance and helps protect critical components from particulate contamination. Powerful Heating and High Processing Capacity Equipped with a 24 kW heating system, the purifier provides effective heating during the oil treatment process. Controlled heating helps improve moisture separation and supports efficient vacuum purification. With a 50 L/min flow rate and 0.6 MPa working pressure, the system is designed for high-capacity industrial oil purification and continuous maintenance applications. PLC Automatic Control The system features PLC control for organized and automated operation. Its electrical configuration is 380 V AC, 50 Hz, three phase, with a 36 kW motor. PLC-based operation helps simplify system management, improve process consistency, and reduce the need for frequent manual adjustments during purification. ...

Diesel Engine Oil Filter P550938

Part Number:P550938
Part Type:Oil Filter
Brand:Donaldson Replacement
MOQ:60pcs
  • Details

Donaldson P550938 Oil Filter Cross Reference | Heavy Duty Engine Oil Filter



The P550938 oil filter is an aftermarket replacement option for professional buyers seeking dependable engine oil filtration products for maintenance, repair, and parts distribution. With a range of cross-reference numbers, it helps wholesalers, filter retailers, and aftermarket service providers identify potential replacement options and manage their product sourcing needs.

Our replacement filter program supports bulk purchasing, competitive wholesale quotations, and OEM/ODM cooperation. Whether you supply maintenance workshops, equipment owners, or regional parts dealers, our team can help you check part numbers and confirm product specifications before ordering.



P550938 Oil Filter Product Specifications

Parameter Specification
Part Number P550938
Product Type Engine Oil Filter / Lube Filter
Brand Reference Donaldson Replacement
Filter Style Cartridge
Outer Diameter (OD) 4.80 in (122 mm)
Inner Diameter (ID) 2.24 in (57 mm)
Length 5.24 in (133 mm)
Minimum Order Quantity 60 pcs
Customization OEM/ODM options subject to confirmation


Donaldson Oil Filter Cross Reference and Lookup

Looking for a Donaldson Oil Filter Cross Reference? P550938 is associated with multiple alternative part numbers used in the engine filtration aftermarket. These references help purchasing teams search supplier catalogs, compare existing inventory, and identify potential replacement products.

Our cross-reference information includes brands and part numbers supplied for this product. Use it as a starting point for your Donaldson Oil Filter Lookup, then verify the specific equipment model and filter design before purchase. Cross-reference listings do not automatically guarantee interchangeability in every application.

Brand Cross-Reference Part Number(s)
Baldwin P7233
Clark Equipment C04593
Fleetguard LF16043
Hengst E714H D561
HiFi Filter SO 10047
John Deere JXRE509672 RE530656 RE538245 RE509672
Kohler GM48731
Liebherr 11212420
Mann HU12015x
Racor PFL5524
Sakura EO-76010
SDMO 330560626 330361848
Wix 51370


Key Benefits of a Heavy Duty Engine Oil Filter


Support Cleaner Engine Oil

Engine oil carries lubricant through moving components while collecting particles generated during operation. A suitable oil filter helps capture contaminants from the oil stream and supports the lubrication system. Selecting the correct replacement helps maintenance teams follow the equipment manufacturer's filtration requirements.

Designed for Replacement and Maintenance Programs

The cartridge-style P550938 replacement offers a practical option for professional maintenance and aftermarket parts supply. Its published dimensions help buyers compare product listings and plan replacement stock. Always confirm the complete filter design and service requirements for the intended application.

Practical Wholesale Sourcing

With an MOQ of 60 pieces, this product is intended for B2B purchasing rather than one-piece retail orders. Consolidating orders can help distributors plan stock, simplify purchasing, and serve recurring customer demand. Contact us to discuss order quantities, packaging options, and current lead times.

OEM Oil Filter Change and Custom Made Oil Filter Options

For buyers managing private-label products or specific sourcing requirements, OEM/ODM cooperation may be available subject to technical review and order confirmation. If you need a Custom Made Oil Filter, provide the required dimensions, application, filter media requirements, drawings, or a sample. Our team can review the request and confirm which customization options are feasible.


Why Choose Our Premium Oil Filter Supply?

01. Replacement Identification Support

Share the part number, equipment model, or existing filter details so our team can help review the requested replacement.

02. B2B-Focused Order Service

Our supply model serves wholesalers, retailers, filter shops, and aftermarket service providers looking for repeatable sourcing.

03. OEM/ODM Cooperation

Discuss private-label packaging or product customization based on confirmed technical requirements and order conditions.

04. Multiple Filter Categories

Source oil, fuel, air, hydraulic, fuel-water separator, breather, and air-oil separator products through one supplier.

05. Direct Quotation Assistance

Send your target quantity and part number to receive a quotation based on current supply conditions.


Frequently Asked Questions


How do I perform a Donaldson Oil Filter Lookup for P550938?

Search by part number P550938 and compare the reference numbers, dimensions, filter style, and equipment application. If you are unsure, send our team the machine model and a photograph of the existing filter for review.

Can I use a cross-reference number instead of P550938?

The listed numbers are potential cross-reference options, but compatibility depends on the actual application and filter specifications. Confirm the replacement with the equipment manufacturer's requirements before installation.

What is the MOQ for the P550938 replacement oil filter?

The stated minimum order quantity is 60 pieces. Contact us for pricing based on your quantity, packaging needs, and destination market.

Can you supply a Premium Oil Filter under our own brand?

OEM/ODM requests can be reviewed according to product specifications, labeling requirements, packaging, and order volume. Send your target specifications and branding requirements so we can evaluate feasibility.

What information should I provide to request a quotation?

Please provide the part number, order quantity, delivery destination, and any packaging or customization requirements. If you need application verification, include the equipment model and existing filter details.


Customer Feedback

★★★★★

James Wilson

Wholesale Parts Buyer

Verified customer feedback to be added: comments about part-number confirmation, quotation response, and wholesale order coordination.

★★★★★

Daniel Carter

Aftermarket Service Supplier

Verified customer feedback to be added: comments about replacement identification, product specifications, and purchasing support.

★★★★★

Andrew Mitchell

Filter Distribution Buyer

Verified customer feedback to be added: comments about bulk purchasing, communication, and long-term supplier cooperation.


Company Introduction

CHINA EVERLASTING PARTS CO., LIMITED is a supplier of aftermarket filtration products serving business customers in international markets. Our main product categories include air filters, air cleaner filters, air dryers, ventilation filters, breather filters, oil filters, fuel filters, hydraulic filters, fuel-water separators, air-oil separators, and filter assemblies.

We support B2B sourcing requirements for retailers, wholesalers, filter shops, and aftermarket service providers. OEM and ODM inquiries are welcome, subject to product feasibility, specifications, and order requirements. Our goal is to help customers identify suitable replacement filters, organize purchasing information, and develop practical long-term supply relationships.


Contact Information

CHINA EVERLASTING PARTS CO., LIMITED

Product Inquiry: P550938 Diesel Engine Oil Filter Replacement

WhatsApp / WeChat: +86 18965520297

WhatsApp / WeChat: +86 18144082725

Email: Sales@filters-king.com

Send us your part number, required quantity, and destination market to request a wholesale quotation.



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