Product
Ingersoll Rand 47701891001 Air Filter Element | Replaces 39903281 | 380mm OD for S90–S150, M185, RM185
Official upgrade air filter element for Ingersoll Rand compressors, replacing part 39903281 with full interchangeability. OD ≈380 mm, ID ≈199 mm, height ≈178 mm, 5–10 μm filtration at ≥98% efficiency. Fits SSR S90/S110/S150, M185, RM185i/RM185n. Bulk inquiries welcome.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Product Information
Part number upgrade notice: 47701891001 is the official Ingersoll Rand upgrade for the previous 39903281. Installation dimensions, filtration precision, and service life are identical — the two parts are directly interchangeable. Please order using the new number 47701891001.
| Item | Details |
|---|---|
| Old part number | 39903281 |
| New part number | 47701891001 (official upgrade, direct interchange) |
| Part name | Air Filter Element |
| Brand | Ingersoll Rand |
| Unit | EA |
| Quantity per machine | 1 |
| Recommended replacement interval | 2,000 hours or 1 year, whichever comes first |
Specifications
| Parameter | Value | Notes |
|---|---|---|
| Outer diameter | ≈ 380 mm | Maximum OD of filter body; OEM manufacturing tolerance ±2 mm |
| Inner diameter | ≈ 199 mm | Center mounting bore, matches compressor air inlet |
| Height | ≈ 178 mm | Total height including top and bottom polyurethane end caps; some batches marked 180 mm |
| Filtration precision | 5–10 μm | Ingersoll Rand OEM standard; ≥98% efficiency for particles above 5 μm |
| Filter media | Imported wood pulp filter paper / glass fiber composite | OEM-grade Ahlstrom-level media; high dust holding capacity, low flow resistance |
| Weight | ≈ 1.75 kg | Net weight per element; slight variation between production batches |
| Part type | Air Filter Element | Dry pleated cartridge |
| Quantity per machine | 1 | — |
| Recommended replacement interval | 2,000 hours or 1 year | Whichever comes first |
| Old/new interchangeability | Fully interchangeable | Installation dimensions, filtration precision, and service life are identical |
Dimension note: Outer diameter, inner diameter, and height are measured reference values. OEM manufacturing tolerance is ±2 mm; some batches are marked with a height of 180 mm. Verify against the physical part before installation.
Compatible Ingersoll Rand Models
SSR S Series — Oil-flooded rotary screw compressors (90–150 kW)
| Model | Power range |
|---|---|
| S90 | 90 kW |
| S110 | 110 kW |
| S150 | 150 kW |
SSR M Series — Oil-flooded rotary screw compressors
| Model | Power range |
|---|---|
| M185 | 185 kW |
RM Series — Rotary screw compressors (185 kW)
| Model | Description |
|---|---|
| RM185i | 185 kW, i = fixed speed |
| RM185n | 185 kW, n = variable speed |
Total compatible models: 6 — S90, S110, S150, M185, RM185i, RM185n. All are classic Ingersoll Rand industrial-grade oil-flooded rotary screw compressors in the medium-to-high power range.
Need a 100% exact match? Provide the complete machine serial number and we can verify further.
Pricing and Lead Time
| Item | Old part 39903281 | New part 47701891001 |
|---|---|---|
| Status | Superseded | Active |
| Reference price | ¥1,069 | ¥1,240 |
| Quoted price | ¥1,450 | ¥1,419 |
| Lead time | — | 45 days |
| Unit | EA | EA |
Bulk inquiries supported. Global shipping available.
Product Overview
39903281 is the air filter element used in Ingersoll Rand SSR S Series, M Series, and RM Series rotary screw compressors.
This part number has been officially superseded by 47701891001. The two parts share identical installation dimensions, filtration precision, and service life, and are directly interchangeable without any mounting modifications.
The element uses imported wood pulp filter paper / glass fiber composite media (Ahlstrom level), with filtration precision of 5–10 μm and ≥98% efficiency for particles above 5 μm. It combines high dust holding capacity with low flow resistance — effectively trapping dust to protect the compressor rotor while avoiding excessive pressure drop that drives up energy consumption.
Outer diameter ≈ 380 mm, inner diameter ≈ 199 mm, height ≈ 178 mm, net weight ≈ 1.75 kg. One element is installed per compressor. Recommended replacement: 2,000 hours or 1 year, whichever comes first.
Installation and Maintenance
Replacement interval
OEM recommendation: 2,000 hours or 1 year, whichever comes first. In dusty environments (dusty workshops, construction sites), shorten inspection intervals to monthly.
Signs replacement is needed
- Inlet restriction 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 and other fault causes have been ruled out.
Do not clean and reuse
Dry pleated elements must not be washed or blown with air — cleaning damages the pleat structure and reduces filtration efficiency. Replace with a new element.
Installation steps
- Shut down and lock out/tag out; allow the enclosure to cool.
- Open the inlet-side enclosure panel and loosen the filter housing cover.
- Grip the end cap and remove the old element.
- Inspect the housing interior — if dust traces are present on the clean side, the seal has failed and must be corrected before installing a new element.
- Wipe the sealing surface, insert the new element (inner diameter ≈199 mm aligns with the air inlet), and avoid over-tightening.
- Reinstall the housing cover and confirm the restriction indicator returns to the clean position.
- Restart the unit and confirm inlet restriction returns to normal.
Old and new numbers are directly interchangeable: 47701891001 and 39903281 share identical installation dimensions. No housing replacement or structural modification is required — simply follow the steps above.
FAQ
Q1. What is the new part number for 39903281?
47701891001. It is the official Ingersoll Rand upgrade for the previous 39903281.
Q2. Are 39903281 and 47701891001 interchangeable?
Yes. Installation dimensions, filtration precision, and service life are identical; they are directly interchangeable.
Q3. What are the dimensions of 39903281?
Outer diameter ≈380 mm, inner diameter ≈199 mm, height ≈178 mm (including top and bottom polyurethane end caps). Outer diameter manufacturing tolerance ±2 mm.
Q4. What is the filtration precision of 39903281?
5–10 μm, with ≥98% efficiency for particles above 5 μm.
Q5. What filter media does 39903281 use?
Imported wood pulp filter paper / glass fiber composite media; OEM uses Ahlstrom-level media, high dust holding capacity and low flow resistance.
Q6. Which compressors does 39903281 fit?
Fits 6 models: SSR S Series S90, S110, S150; M Series M185; and RM Series RM185i, RM185n.
Q7. What is the difference between RM185i and RM185n?
i is fixed speed, n is variable speed; both use the same air filter.
Q8. How often should this air filter be replaced?
OEM recommends 2,000 hours or 1 year, whichever comes first. Shorten intervals in dusty environments.
Q9. How many air filters are needed per compressor?
1.
Q10. How do I know when to replace the air filter?
The inlet restriction 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 blown with air; cleaning damages the pleat structure and reduces filtration efficiency.
Q12. How can I be sure it fits my machine?
Provide the complete compressor serial number and we will perform an exact match verification.
Request a Quote
Bulk procurement, export documentation, and global shipping are supported. To receive a fast and accurate quotation, please provide:
- Compressor model (e.g., S110, RM185n)
- Or the complete machine serial number (for 100% exact match verification)
- Required quantity
We respond during business hours.