China Everlasting Parts Co., Ltd. is one of the most professional manufacturers and suppliers of af4939 primary air filter in China. Welcome to wholesale original and genuine af4939 primary air filter from our factory. Contact us for cheap products and OEM service.
AF4939 Heavy-Duty Primary Air Filter
Premium Intake Protection for Aerial Platforms and Compact Excavators
Engineered as a direct replacement for Fleetguard AF4939, Donaldson P778340, and Baldwin PA3476.
Specifically dimensioned (104mm OD x 264mm Height) for a secure, airtight seal in standard housings.
Optimized for engine protection in Kubota KX series, Genie Z-lifts, and Komatsu forklifts.
High-stability pleated media provides consistent airflow and superior contaminant capture.
Detailed Product Description
Advanced Intake Protection
The AF4939 is a high-performance primary air filter designed to capture microscopic airborne contaminants before they reach the engine's combustion chamber. In compact construction equipment like the Kubota KX71 or Genie Z-34/22, maintaining clean airflow is critical to preventing premature piston ring wear and maintaining fuel efficiency.
Why Professionals Choose AYREST
Our AF4939 utilizes a specialized synthetic-cellulose media blend that balances low air restriction with high dust-holding capacity. Unlike generic alternatives, this filter maintains its structural integrity even under high-vacuum pressure, ensuring that your Komatsu FG15 or Manitou TMT series continues to operate at peak horsepower without air starvation.
Engineered for Diverse Environments
From the dusty job sites of an Ammann roller to the demanding cycles of a Schaffer loader, the AF4939 is built to withstand varied thermal and mechanical stresses. The radial seal design ensures that dust cannot bypass the media, providing a total filtration solution for mixed-fleet operators.
Technical Specifications
| Parameter | Specification Detail |
|---|---|
| Model Number | AF4939 |
| Filter Type | Primary Air Filter |
| Outer Diameter (D1/A) | 104.0 mm |
| Inner Diameter (D2/B) | 63.0 mm |
| End Cap Diameter (D) | 150.0 mm |
| Overall Height (H) | 264.0 mm |
| Media Type | High-Efficiency Cellulose/Synthetic |
Cross Reference
Fleetguard: AF4939 | Donaldson: P778340 | HiFi Filter: SA 10021 | Case IH:200045A1 | Kubota:81574111081
Mann Filter: C 11 004 | Baldwin: PA3476 | SF Filter: SL 8489 | Inline: FA14889 | Bobcat:6682494
Application Industry Fitment
Genie (GS 3384 RT, Z-45/25, Z-60/37), JLG (260 MRT, 400 CRT), Niftylift HR 17 D.
Kubota KX27/71/91, Kobelco SK45 SR, Komatsu FG10-15, Manitou TMT series.
Schaffer 2022-4042, Massey Ferguson 5035/5045, Ammann RW 2900, Dynapac F1430.
Quality and Certification
- Strict Quality Control: Manufactured in accordance with ISO 9001 and industry-leading filtration standards.
- Vibration Resistant: Heavy-duty end caps and inner reinforcement protect against media fatigue in mobile equipment.
- Precision Gaskets: High-grade rubber seals ensure an airtight interface with the air cleaner housing.
Technical FAQ
Q: Is the AF4939 air filter compatible with the Kubota KX71 excavator?
A: Yes, the AF4939 is a precision fit for the Kubota KX71 and several other models in the KX and R series.
Q: Can I use this filter to replace a Donaldson P778340?
A: Absolutely. The AF4939 is a direct technical cross-reference for the Donaldson P778340, offering identical specs.
Q: Which Genie aerial lifts use the AF4939 air filter?
A: It is widely used in Genie GS series (GS 3268 RT) and Z-series articulating booms (Z-34/22 and Z-45/25 J).
Q: How do I know when it is time to replace my primary air filter?
A: Replacement should occur when the restriction indicator triggers or during scheduled maintenance (typically 500-1,000 hours).
"Global Reliability for Compact Industrial Fleets"
- 📈 Volume Discounting: Competitive bulk pricing for parts distributors and maintenance centers.
- 🚢 Reliable Availability: Large inventory maintained for rapid dispatch to global markets.
- 🛠️ Custom Solutions: Private labeling and OEM/ODM manufacturing available upon request.
WhatsApp / Wechat: +86 13328990097
Email: Sales@enginegensetparts.com
Official Website: www.enginegensetparts.com
Hot Tags: af4939 primary air filter manufacturers, wholesale, aftermarket, genuine, original, cheap, OEM, replacement, Air Housing AH8925, Bus Filters, Vehicle Air Filter, AF872, Air Filters, Ingersoll Rand Air Filter
