This high-efficiency Air/Oil Separator is primarily used in industrial rotary screw air compressors. Its main job is to separate lubricating oil from the compressed air before the air leaves the system.
Product Detail

Donaldson Air Oil Separator P782921 39733793
Sourcing notes
Donaldson Air Oil Separator P782921 39733793 (P782921) is listed as a Donaldson reference in the Oil Filter range for replacement, distribution, and maintenance sourcing.
Precise supports this item with controlled production, sample inquiry handling, MOQ from 200 pieces, and delivery planning of 20 days.
Common cross-reference numbers include 39737473, 39737493, 92740935, and 92871316, helping buyers match OEM and aftermarket requirements.
Key specification fields include Dimensions, Weight, Filtration Efficiency, and Replacement Interval, so buyers can confirm dimensions and operating requirements before ordering.
Procurement and fitment checklist
Before ordering P782921, match the Donaldson reference, Oil Filter type, and cross-reference numbers: 39737473, 39737493, 92740935, and 92871316. This helps avoid replacing a visually similar filter with the wrong sealing size, airflow path, or mounting configuration.
Review the specification fields (Dimensions, Weight, Filtration Efficiency, and Replacement Interval) together with the equipment nameplate, service interval, and installation space. For air, fuel, oil, hydraulic, urea, and separator filters, a small dimension or efficiency mismatch can affect service life.
For wholesale sourcing, confirm sample availability, MOQ of 200 pieces, packaging, label requirements, and delivery planning of 20 days before arranging shipment.
Buyer decision support
Application check
Use P782921 for the Oil Filter application sourcing only after matching the equipment model, installation space, and working environment.
Cross-reference check
Treat 39737473, 39737493, 92740935, and 92871316 as reference numbers, then confirm dimensions, sealing, thread, flow direction, and service interval before replacement.
OEM and private-label supply
For P782921, Precise can discuss samples, stable production, packaging, labeling, and OEM/private-label requirements from MOQ 200 pieces.
Information to send
Send the current part number, product photos, dimensions or drawings, Dimensions, Weight, Filtration Efficiency, and Replacement Interval, quantity, destination market, and packaging request to speed up verification.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions | OD: 219 mm ID: 157 mm L: 250.5 mm Flange Diameter: 288 mm |
| Weight | 3.85 kg |
| Filtration Efficiency | 99.7% |
| Replacement Interval | 4,000 hour |
| Filter Media Brand | H&V; Ahlstrom |
| Packaging | Moisture-proof bag+Cardboard box |
Cross Reference Numbers
This filter is compatible with the following OEM and aftermarket part numbers.
Frequently asked questions
- What is the Precise P782921 Oil Filter?
- Precise P782921 is a heavy-duty Oil Filter engineered to OEM-quality standards as a direct replacement. It is built to match the original dimensions, fit and filtration performance for a no-modification interchange.
- What does Precise P782921 cross-reference to?
- Precise P782921 cross-references to 39737473, 39737493, 92740935, and 92871316, among others. Send us any reference number and we will confirm the exact match.
- What are the specifications of Precise P782921?
- Key specifications of Precise P782921: Dimensions: OD: 219 mm ID: 157 mm L: 250.5 mm Flange Diameter: 288 mm, Weight: 3.85 kg, Filtration Efficiency: 99.7%, Replacement Interval: 4,000 hour, Filter Media Brand: H&V; Ahlstrom. Always confirm these against your machine and operating conditions before ordering.
- What is the minimum order quantity and lead time for Precise P782921?
- Precise P782921 ships at a minimum order quantity of 200 pieces, with distributor and fleet pricing and lead time on request. Contact us with the part number for a quote.
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