ONFiL Filter Manufactory | Premium Filtration Solutions for Industrial Engines

About ONFiL

Ruian ONFiL Filter Manufactory, based in Ruian City, Zhejiang Province, China, is an industry-leading manufacturer and supplier of high-performance oil filters, fuel filters, air filters, and air dryers.

With a commitment to innovation and precision engineering, ONFiL delivers filtration solutions trusted by global clients across heavy machinery, transportation, and industrial sectors.

Industry-leading manufacturer since 2003

Exports to over 60 countries

Certified quality control & testing protocols

20+

Our Products

High-performance filtration solutions designed for reliability, longevity, and optimal engine protection. Compatible with major OEMs including Onfil, Fleetguard, Perkins, Scania, and Volvo.

Oil Filter – ONF-OF205

High-efficiency pleated media for extended service life. Compatible with Perkins 1100/1300 series.

• Filtration: 10–15 microns
• Burst Pressure: 800 psi
• Bypass Valve: 15 psi
• OEM Equivalent: Fleetguard LF9000

Fuel Filter – ONF-FF308

Water-separating diesel fuel filter for Scania and Volvo engines.

• Water Separation: >95%
• Flow Rate: 300 L/hr
• Micron Rating: 5–7 μm
• OEM Equivalent: Scania 1440346

Air Filter – ONF-AF501

Heavy-duty dry element air filter for mining and construction equipment.

• Efficiency: 99.5% @ 3μm
• Dust Holding Capacity: 1.2 kg
• Flow: 1200 m³/h
• OEM Equivalent: Donaldson P550600

Air Dryer – ONF-AD100

Desiccant-type air dryer for commercial vehicle brake systems.

• Dew Point: -40°C
• Flow Capacity: 600 L/min
• Regeneration: Pressure swing
• OEM Equivalent: Bendix 222150

Hydraulic Filter – ONF-HF220

Beta ratio tested for critical hydraulic systems in industrial machinery.

• Beta (x): ≥200 @ 10μm
• Max Pressure: 350 bar
• Media: Micro-glass fiber
• OEM Equivalent: Pall HC8314F

Spin-On Oil Filter – ONF-OS150

Compact design for tight engine compartments. Anti-drain back valve included.

• Diameter: 85 mm
• Height: 190 mm
• Thread: 3/4-16 UNF
• OEM Equivalent: Mann W902/90

Dual-Stage Fuel Filter – ONF-DF400

Two-stage filtration with pre-filter and final water separator.

• Stage 1: 30μm pre-filter
• Stage 2: 2–5μm final
• Water Detection: Visual indicator
• OEM Equivalent: Cummins FS19613

Cabin Air Filter – ONF-CA100

Activated carbon filter for truck cabins, removing dust, odors, and pollutants.

• Dimensions: 300x200x30 mm
• Filtration: PM2.5 & VOCs
• Airflow: 800 m³/h
• OEM Equivalent: Mercedes 906 470 01 48

Transmission Filter – ONF-TF330

High-flow filter for automatic transmissions in heavy-duty vehicles.

• Flow Rate: 250 L/min
• Micron Rating: 10–15 μm
• Bypass: 3 bar
• OEM Equivalent: ZF 4660000117

Coolant Filter – ONF-CF120

Extended-life coolant filter with organic acid technology (OAT) compatibility.

• Capacity: 200,000 km
• Additive: SCOH & Nitrite
• Thread: M24x1.5
• OEM Equivalent: Detroit Diesel 23533605

Why Choose ONFiL?

We combine innovation, quality, and service to deliver unmatched filtration performance.

Zero Defect Policy

We operate under a strict "zero defect, zero complaints" quality objective across all production stages.

Industry Standards

All products meet or exceed ISO, SAE, and OEM specifications through rigorous testing protocols.

Global Support

Serving customers in over 60 countries with responsive technical and logistics support.

Continuous Innovation

Investing in R&D and advanced materials to deliver next-generation filtration technology.

Latest News

Nov

2023

New Testing Machine Installed

With the best combination of raw materials and the most sophisticated manufacturing processes available, ONFiL products are featured with high performance, zero leakage, non-pollution, and long life. All products undergo extensive testing to meet industry standards.

Oct

2025

Automechanika Shanghai 2025 – Booth 4.1K59

Our factory will participate in Automechanika Shanghai from November 26th–29th, 2025. We welcome all industry partners and friends to visit our booth at 4.1K59.

Nov

2024

Automechanika Shanghai 2024 – Booth 6.1H18

ONFiL exhibited at Automechanika Shanghai from December 2nd–5th, 2024. Our booth at 6.1H18 showcased the latest filtration innovations for commercial vehicles and industrial engines.

Frequently Asked Questions

Are ONFiL filters compatible with OEM specifications?

Yes, all ONFiL filters are engineered to meet or exceed original equipment manufacturer (OEM) performance standards for filtration efficiency, flow, and durability.

What quality certifications do you hold?

Our manufacturing processes comply with ISO 9001 standards. All products undergo rigorous testing for burst pressure, filtration efficiency, and structural integrity.

Can you produce custom filter designs?

Yes, we offer OEM/ODM services and can develop custom filtration solutions based on technical drawings, samples, or performance requirements.

What is your minimum order quantity (MOQ)?

MOQ varies by product type, but we are flexible and can accommodate trial orders for new customers. Contact us for specific details.

How do you ensure consistent quality across batches?

We implement a full-process quality control system, including raw material inspection, in-process checks, and 100% final testing for critical parameters like seal integrity and pressure resistance.

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ONFiL Filter Manufactory – Precision Filtration for Industrial Excellence