Introduction
The Ingersoll Rand 47550997001 39911631 Oil Filter Element combination is suited to structured compressor maintenance where lubrication-system filtration is treated as an essential part of equipment reliability. The 47550997001 reference belongs to the 8,000-hour preventive maintenance family for compatible New Cobra M90–160 air-cooled compressors, while 39911631 identifies a dedicated oil filter element used across a range of Ingersoll Rand compressor applications.
Oil filtration is fundamental to the operation of an oil-injected rotary screw compressor. Lubricant performs several important functions within the machine, including lubrication, cooling, and sealing. As oil circulates, it can collect fine particulate contamination and wear debris. The oil filter helps remove these contaminants before they can continue through the lubrication circuit.
The 39911631 reference is well established in Ingersoll Rand parts documentation and aftermarket cross-reference systems. MANN-FILTER specifically maps Ingersoll Rand OE reference 39911631 to WH 1257, providing an additional identification reference for filter sourcing.
Published application information also demonstrates why correct fitment matters. 39911631 has been identified for EP75 and EP100 rotary screw compressors as well as selected HP, XP, HXP, EPE, and other configurations. Different compressor models can use different oil-filter references even when their overall operating principles are similar.
For maintenance teams, an oil filter should therefore be selected by confirmed part number and machine application rather than by approximate physical dimensions alone. Thread configuration, sealing arrangement, filtration characteristics, pressure capability, and housing design all influence whether a filter is suitable.
One published specification for 39911631 lists a 12 µm inorganic-microfiber filtration medium, 121 mm outside diameter, approximately 299.1 mm total height, 25 bar working pressure, and 54 bar burst pressure. Because these figures come from a filter supplier's application listing, they should be regarded as reference specifications and verified against the intended installation.
The relationship between 47550997001 and 39911631 should also be handled carefully. A maintenance-kit number identifies a particular service configuration, but it does not by itself establish that every individual component reference is interchangeable across all machines in the same compressor family. The machine's serial number and current parts documentation remain the controlling references.
From a maintenance perspective, replacing a contaminated oil filter at the appropriate service point helps maintain clean lubricant circulation. This supports the protection of bearings, rotors, and other precision components that depend on reliable oil flow.
For purchasing departments, using the complete 39911631 part number makes procurement more precise and reduces the risk of confusing the oil filter with visually similar air, coolant, or separator elements. Recording the compressor model and serial number alongside the filter reference further improves traceability.
When correctly matched to the compressor, 39911631 provides a dependable filtration solution for scheduled oil-system maintenance and contributes to the broader objective of maintaining efficient, stable, and reliable industrial compressor operation.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Ingersoll Rand |
| Maintenance Kit Reference | 47550997001 |
| Maintenance Kit Type | 8,000-Hour Preventive Maintenance Kit |
| Maintenance Kit Application | New Cobra M90–160, air-cooled configuration |
| Component Part Number | 39911631 |
| Product Type | Oil Filter Element |
| Primary Function | Compressor oil filtration |
| Filter Cross-Reference | MANN-FILTER WH 1257 |
| Published Filter Media | Inorganic microfibers, 12 µm reference |
| Published Outside Diameter | 121 mm |
| Published Total Height | 299.1 mm |
| Published Body Height | 295 mm |
| Published Working Pressure | 25 bar |
| Published Burst Pressure | 54 bar |
| Published Net Weight | 2.08 kg |
| Thread Reference | UN 1"3/4 Female Bottom 12 |
| Service Interval | Application-specific; verify current maintenance schedule |
| Installation Location | Compressor lubrication / oil circuit |
| Dimensions | Verify against current OEM or approved filter documentation |
| Weight | Verify supplied product and configuration |
| Package Contents | Verify applicable bill of materials |
| Compatibility | Confirm compressor model and serial number before ordering |
The dimensional, pressure, media, thread, and weight figures above are published reference specifications for 39911631 from a filter supplier and should not override current Ingersoll Rand application documentation.
Recommended Companion Models
| Model | Product Name |
| 24172215 | Air Filter Element |
| 54509427 | Air/Oil Separator Element |
| 99289894 | Minimum Pressure Valve Service Kit |
| 47545136001 | Temperature-Sensing Valve Kit |
These are related Ingersoll Rand service references for compressor maintenance. They perform different functions and are not automatically included in or interchangeable with 39911631; applicability should be confirmed against the specific compressor configuration.
Frequently Selected Alternatives
| Model | Product Name |
| 39911615 | Oil Filter Element |
| 54672654 | Oil Filter |
| 39329602 | Oil Filter |
| 54601513 | Oil / Separator Filter Reference |
