Ingersoll Rand 47701891001 Air Filter Element | Replaces 39903281 | 380mm OD for S90–S150, M185, RM185

Product Overview

Part 39903281 has been officially superseded by 47701891001. Both share identical mounting dimensions, filtration performance, and service life, allowing direct interchange without any modification to the housing or intake structure.

The filter element uses imported wood pulp filter paper / glass fiber composite media (Ahlstrom-grade), delivering 5–10 μm filtration with ≥98% efficiency for particles above 5 μm. It combines high dust-holding capacity with low flow resistance — effectively protecting the compressor rotor while avoiding excessive energy consumption.

Dimensions: OD ≈380 mm, ID ≈199 mm, height ≈178 mm, net weight ≈1.75 kg. One element per compressor. Recommended replacement: 2,000 hours or 1 year, whichever comes first.

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 >5 μm
• Media: Imported wood pulp filter paper / glass fiber composite (Ahlstrom-grade)
• Weight: ≈1.75 kg per element
• Type: Dry pleated air filter element
• Quantity per compressor: 1
• Replacement interval: 2,000 hours or 1 year, whichever comes first
• Interchangeability: Fully interchangeable with 39903281

Compatible Ingersoll Rand 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)

Total 6 models. For 100% accurate matching, provide the complete compressor serial number and we will verify.

Installation & Maintenance

Replacement indicators

• 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 continuously drops with no other cause identified.

Do not clean and reuse

Dry pleated elements cannot be washed or blown with air — cleaning damages the pleat structure and reduces filtration efficiency. Replace with a new element.

Installation steps

1. Shut down and lock out/tag out; 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; correct before installing the new element.
5. Wipe the sealing surface, insert the new element (ID ≈199 mm aligned with the intake), and avoid over-tightening.
6. Reinstall the cover and confirm the resistance indicator returns to the clean position.
7. Restart the unit and verify intake resistance is normal.

Pricing & Lead Time

• Old part 39903281: superseded, no longer active.
• New part 47701891001: active, reference price ¥1,240, quoted price ¥1,419 per piece.
• Lead time: 45 days.
• Unit: EA (each).

Bulk inquiries welcome. Global shipping available.

FAQ

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

Q2. Can 39903281 and 47701891001 be interchanged?
Yes. Mounting dimensions, filtration performance, and service life are identical, allowing direct interchange.

Q3. What are the dimensions of 39903281?
OD ≈380 mm, ID ≈199 mm, height ≈178 mm (including upper and lower polyurethane end caps). OD manufacturing 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 media, Ahlstrom-grade, high dust-holding capacity and low flow resistance.

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

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

Q8. How often should this air filter be replaced?
Every 2,000 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?
When the intake resistance indicator turns yellow and remains yellow after shutdown.

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

Q12. How can I confirm compatibility with my machine?
Provide the complete compressor serial number for precise matching verification.

Request a Quotation

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

• Compressor model (e.g., S110, RM185n)
• Or complete compressor serial number for 100% accurate matching
• Required quantity

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