Ingersoll Rand 47701891001 Air Filter Element | Replaces 39903281 | 380mm OD

Product Overview

The 39903281 air filter element has been officially superseded by part number 47701891001. Both share identical installation dimensions, filtration performance, and service life, allowing direct interchange without any modification to the housing or intake system.

Manufactured with imported wood pulp filter paper / glass fiber composite media (Ahlstrom grade), this element delivers 5–10 μm filtration with ≥98% efficiency for particles above 5 μm. The high dust-holding capacity and low flow resistance protect the compressor rotor while keeping energy consumption in check.

Specifications

• Old Part Number: 39903281
• New Part Number: 47701891001 (official upgrade, direct replacement)
• Brand: Ingersoll Rand
• Outer Diameter: ≈380 mm (manufacturing tolerance ±2 mm)
• Inner Diameter: ≈199 mm
• Height: ≈178 mm (some batches labeled 180 mm)
• Filtration Rating: 5–10 μm; ≥98% efficiency for particles above 5 μm
• Media: Imported wood pulp filter paper / glass fiber composite (Ahlstrom grade)
• Weight: ≈1.75 kg per element
• Type: Dry pleated cartridge air filter element
• Quantity per Compressor: 1 element
• Recommended Replacement: 2000 hours or 1 year, whichever comes first

Compatible Ingersoll Rand Models

This element fits six industrial rotary screw compressor models:

• SSR S Series: S90 (90 kW), S110 (110 kW), S150 (150 kW)
• SSR M Series: M185 (185 kW)
• RM Series: RM185i (185 kW, fixed speed), RM185n (185 kW, variable speed)

To confirm 100% fitment, provide the complete compressor serial number and we will verify compatibility.

Installation & Maintenance

Replacement interval: 2000 hours or 1 year, whichever comes first. In dusty environments, inspect monthly.

Signs replacement is needed:

• Intake resistance indicator enters the yellow zone and remains there after shutdown.
• Dust traces visible on the clean side of the filter housing.
• Discharge volume drops persistently with no other fault identified.

Do not clean and reuse: Dry pleated elements cannot be washed or air-blown. Cleaning damages the pleat structure and reduces filtration efficiency. Always replace with a new element.

Installation steps:

1. Shut down and lock out the compressor; allow the enclosure to cool.
2. Open the intake-side panel and loosen the filter housing cover.
3. Grip the end cap and remove the old element.
4. Inspect the housing interior. Dust on the clean side indicates a seal failure — address before installing the new element.
5. Wipe the sealing surface, insert the new element (≈199 mm ID aligns with intake port), and avoid over-tightening.
6. Reinstall the housing cover and confirm the resistance indicator returns to the clean position.
7. Restart the compressor and verify intake resistance is normal.

Pricing & Lead Time

• Old Part 39903281: superseded, no longer available
• New Part 47701891001: active, reference price ¥1,240; quoted price ¥1,419; lead time 45 days

Batch inquiries and global shipping supported.

FAQ

Q1. What is the new part number for 39903281?
47701891001. It is the official Ingersoll Rand upgrade for the older 39903281.

Q2. Are 39903281 and 47701891001 interchangeable?
Yes. Installation dimensions, filtration performance, and service life are identical. Direct interchange is possible.

Q3. What are the dimensions?
OD ≈380 mm, ID ≈199 mm, height ≈178 mm (including polyurethane end caps). OD tolerance ±2 mm.

Q4. What is the filtration rating?
5–10 μm, with ≥98% efficiency for particles above 5 μm.

Q5. What filter media is used?
Imported wood pulp filter paper / glass fiber composite (Ahlstrom grade) for high dust-holding capacity and low flow resistance.

Q6. Which compressors does it fit?
Six models: SSR S90, S110, S150; M185; RM185i; RM185n.

Q7. What is the difference between RM185i and RM185n?
i indicates fixed speed, n indicates variable speed. Both use the same air filter element.

Q8. How often should it be replaced?
2000 hours or 1 year, whichever comes first. Shorten the interval in dusty environments.

Q9. How many elements per compressor?
One.

Q10. How do I know when to replace it?
The intake resistance indicator turns yellow and remains in the yellow zone after shutdown.

Q11. Can 39903281 be cleaned and reused?
No. Dry pleated elements cannot be washed or air-blown; cleaning damages the pleat structure and reduces efficiency.

Q12. How can I confirm fitment?
Provide the complete compressor serial number and we will perform a precise compatibility check.

Request a Quotation

We support batch procurement, export documentation, and global shipping. To receive an accurate quotation, please provide:

• Compressor model (e.g., S110, RM185n) or complete serial number for 100% fitment verification
• Required quantity

We respond during business hours. OEM/ODM inquiries welcome.