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, and RM185n.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
⚠️ Part Number Upgrade Notice
47701891001 is the official Ingersoll Rand upgrade number for the older 39903281.
The mounting dimensions, filtration accuracy, and service life are identical, allowing direct interchange.
Please order using the new number 47701891001.
1. Product Information
| 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 Compressor | 1 EA |
| Recommended Replacement Interval | 2,000 hours or 1 year, whichever comes first |
2. Specifications
| Parameter | Value | Notes |
|---|---|---|
| Outer Diameter | ≈ 380 mm | Maximum outer diameter of filter body; OEM tolerance ±2 mm |
| Inner Diameter | ≈ 199 mm | Center mounting bore diameter, matches compressor air inlet |
| Height | ≈ 178 mm | Total height including polyurethane end caps; some batches marked 180 mm |
| Filtration Accuracy | 5 ~ 10 μm | Ingersoll Rand OEM standard; ≥98% efficiency for particles >5 μm |
| Filter Media | Imported wood pulp 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 variations between production batches |
| Part Type | Air Filter Element | Dry pleated cartridge |
| Quantity per Compressor | 1 EA | — |
| Recommended Replacement Interval | 2,000 hours or 1 year | Whichever comes first |
| Old/New Interchangeability | Fully interchangeable | Identical mounting dimensions, filtration accuracy, and service life |
Dimension Note: Outer diameter, inner diameter, and height are measured reference values. OEM manufacturing tolerance ±2 mm; some batches marked 180 mm height. Verify against actual part before installation.
3. Compatible Ingersoll Rand Models
S Series — SSR S Series Oil-Injected Screw Compressors (90–150 kW)
| Model | Power Range |
|---|---|
| S90 | 90 kW |
| S110 | 110 kW |
| S150 | 150 kW |
M Series — SSR M Series Oil-Injected Screw Compressors
| Model | Power Range |
|---|---|
| M185 | 185 kW |
RM Series — RM Series Screw Compressors (185 kW)
| Model | Notes |
|---|---|
| RM185i | 185 kW, i = fixed speed |
| RM185n | 185 kW, n = variable speed |
Total 6 compatible models: S90, S110, S150, M185, RM185i, RM185n.
All are classic Ingersoll Rand industrial oil-injected screw compressors in the medium-to-high power range.
Need 100% exact match?
Provide the compressor's full serial number and we can verify for you.
4. Pricing and Lead Time
| Item | Old No. 39903281 | New No. 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 welcome. Worldwide shipping available.
5. Product Overview
The 39903281 is an air filter element used in Ingersoll Rand SSR S Series, M Series, and RM Series screw compressors.
This part number has been officially superseded by 47701891001. The mounting dimensions, filtration accuracy, and service life are identical, allowing direct interchange without any installation modifications.
The element uses imported wood pulp paper / glass fiber composite media (Ahlstrom-grade), with filtration accuracy of 5 ~ 10 μm and ≥98% efficiency for particles >5 μm. It combines high dust holding capacity with low flow resistance — effectively capturing dust to protect the main rotor while avoiding excessive pressure drop that increases energy consumption.
Outer diameter ≈ 380 mm, inner diameter ≈ 199 mm, height ≈ 178 mm, net weight ≈ 1.75 kg per element. One element per compressor. Recommended replacement every 2,000 hours or 1 year, whichever comes first.
6. Installation and Maintenance
Replacement Interval
OEM recommends 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
- Air intake 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 with no other fault found.
Do Not Clean and Reuse
Dry pleated elements cannot be washed or air-blown — 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 intake-side enclosure panel; loosen the filter housing cover.
- Grip the end cap and remove the old element.
- Inspect the housing interior — if dust traces are on the clean side, the seal has failed and must be addressed before installing the new element.
- Wipe the sealing surface; install the new element (align the ≈199 mm ID with the air inlet); do not over-tighten.
- Replace the housing cover; confirm the restriction indicator returns to the clean position.
- Restart the unit and confirm intake restriction is back to normal.
Old and new numbers are directly interchangeable: 47701891001 and 39903281 share the same mounting dimensions. No housing change or structural modification is required — simply follow the steps above.
7. FAQ
Q1. What is the new part number for 39903281?
47701891001. It is the official Ingersoll Rand upgrade number for the older 39903281.
Q2. Are 39903281 and 47701891001 interchangeable?
Yes. Mounting dimensions, filtration accuracy, and service life are identical, allowing direct interchange.
Q3. What are the dimensions of 39903281?
Outer diameter ≈ 380 mm, inner diameter ≈ 199 mm, height ≈ 178 mm (including polyurethane end caps). Outer diameter tolerance ±2 mm.
Q4. What is the filtration accuracy of 39903281?
5 ~ 10 μm, with ≥98% efficiency for particles >5 μm.
Q5. What filter media does 39903281 use?
Imported wood pulp paper / glass fiber composite media; OEM uses Ahlstrom-grade media with high dust holding capacity and low flow resistance.
Q6. Which compressors does 39903281 fit?
Six 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 element.
Q8. How often should this air filter be replaced?
OEM recommends 2,000 hours or 1 year, whichever comes first. Shorten in dusty environments.
Q9. How many air filters does one compressor need?
1 EA.
Q10. How do I know when to replace the air filter?
The intake 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 air-blown; cleaning damages the pleat structure and reduces filtration efficiency.
Q12. How can I confirm it fits my machine?
Provide the compressor's full serial number and we can perform an exact match verification.
8. Inquiry
Bulk procurement, export documentation, and worldwide shipping are supported.
For a fast and accurate quotation, please provide:
- Compressor model (e.g., S110, RM185n)
- Or full serial number (for 100% exact match verification)
- Required quantity
We will respond within business hours.