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 and global shipping supported.
- 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 two share identical installation dimensions, filtration accuracy, and service life, and are directly interchangeable.
Please use the new number 47701891001 when ordering.
1. Product Information
| Item | Details |
|---|---|
| Old Part Number | 39903281 |
| New Part Number | 47701891001 (official upgrade number, directly interchangeable) |
| 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 |
2. Specifications
| Parameter | Value | Notes |
|---|---|---|
| Outer Diameter | ≈ 380 mm | Maximum outer diameter of filter body; OEM manufacturing tolerance ±2 mm |
| Inner Diameter | ≈ 199 mm | Center mounting bore diameter, matches compressor air intake specification |
| Height | ≈ 178 mm | Total height including upper and lower polyurethane end caps; some batches marked as 180 mm |
| Filtration Accuracy | 5 ~ 10 μm | Ingersoll Rand OEM standard; filtration efficiency ≥ 98% for particles above 5 μm |
| Filter Media | Imported wood pulp filter paper / glass fiber composite | OEM-grade Ahlstrom-class media, high dust holding capacity, low flow resistance |
| Weight | ≈ 1.75 kg | Net weight per filter; slight variation between production batches |
| Part Type | Air Filter Element | Dry pleated filter cartridge |
| Quantity per Machine | 1 | — |
| Recommended Replacement Interval | 2,000 hours or 1 year | Whichever comes first |
| Old/New Interchangeability | Fully interchangeable | Identical installation 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 with height 180 mm. Verify against the actual part before installation.
3. Compatible Ingersoll Rand Models
S Series — SSR S Series Oil-Flooded Screw Compressors (90–150 kW)
| Model | Power Range |
|---|---|
| S90 | 90 kW |
| S110 | 110 kW |
| S150 | 150 kW |
M Series — SSR M Series Oil-Flooded 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 of 6 compatible models: S90, S110, S150, M185, RM185i, RM185n.
All are classic Ingersoll Rand industrial oil-flooded screw compressors, in the medium-to-high power range.
Need 100% accurate matching?
Provide the compressor's full machine serial number and we can verify further for you.
4. Pricing & Lead Time
| Item | Old Number 39903281 | New Number 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.
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 two share identical installation dimensions, filtration accuracy, and service life, and are directly interchangeable without any modification to the installation structure.
The filter uses imported wood pulp filter paper / glass fiber composite media (Ahlstrom-class), with filtration accuracy of 5 ~ 10 μm and filtration efficiency ≥ 98% for particles above 5 μm. It combines high dust holding capacity with low flow resistance — effectively capturing dust to protect the main rotor while avoiding excessive resistance that could increase energy consumption.
Outer diameter ≈ 380 mm, inner diameter ≈ 199 mm, height ≈ 178 mm, net weight per unit ≈ 1.75 kg. Each compressor uses 1 element. Recommended replacement: 2,000 hours or 1 year, whichever comes first.
6. Installation & 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.
Indicators for Replacement
- 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 continues to decline after ruling out other causes.
Do Not Clean and Reuse
Dry pleated filter 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; wait for the enclosure to cool;
- Open the intake-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 addressed before installing a new element;
- Wipe the sealing surface, install the new element (inner diameter ≈199 mm aligned with the intake), and avoid over-tightening;
- Reinstall the housing cover and confirm the resistance indicator returns to the clean position;
- Restart the unit and confirm intake resistance has returned to normal.
Old and new numbers are directly interchangeable: 47701891001 and 39903281 have identical installation dimensions. No housing change or structural modification is required — simply install following the steps above.
7. Frequently Asked Questions
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. They share identical installation dimensions, filtration accuracy, and service life, and can be directly interchanged.
Q3. What are the dimensions of 39903281?
Outer diameter approx. 380 mm, inner diameter approx. 199 mm, height approx. 178 mm (including upper and lower polyurethane end caps). Outer diameter manufacturing tolerance ±2 mm.
Q4. What is the filtration accuracy of 39903281?
5 ~ 10 μm, with filtration efficiency ≥ 98% for particles above 5 μm.
Q5. What filter media does 39903281 use?
Imported wood pulp filter paper / glass fiber composite media; OEM uses Ahlstrom-class media, high dust holding capacity, 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 the interval in dusty environments.
Q9. How many air filters are needed per compressor?
1.
Q10. How do I know when the air filter needs replacement?
The intake resistance indicator turns yellow and remains in the yellow zone after shutdown.
Q11. Can 39903281 be cleaned and reused?
No. Dry pleated filter elements cannot be washed or blown with air; cleaning damages the pleat structure and reduces filtration efficiency.
Q12. How can I confirm it will fit my machine?
Provide the compressor's full machine serial number and we can perform a precise matching verification for you.
8. Request a Quote
Bulk purchasing, export documentation, and global shipping are all supported.
To provide a fast and accurate quote, please include:
- Compressor model (e.g., S110, RM185n)
- Or full machine serial number (for 100% accurate matching verification)
- Required quantity
We will respond during business hours.