Sofima (UFI) ERA51NFC, direct aftermarket replacement. This filter is a direct replacement aftermarket oil filter, precision engineered to match the performance of genuine elements from leading brands including Airfil, Baldwin, Donaldson, Duplomatic, Fai Filtri, Filtrec, HiFi Filter, Ikron, MP Filtri, Mahle, Oxfil, SF Filter, Sofima (UFI), and UFI. Constructed with inorganic microfibre media, it achieves a reliable 12-micron filtration rating, capturing fine particulate that can damage hydraulic pumps, valves, and other critical system components. The filter stands 140 mm tall with a 130 mm outer diameter and features an integrated bypass valve set to open at 1.75 bar, maintaining oil flow during cold starts or if the element becomes clogged. By offering a quality aftermarket alternative, this filter reduces operating costs while delivering the same dependable protection your equipment requires.
Technical properties & cross references
Specifications
| Filtration Media |
Inorganic Microfibers 12 µm |
| Media type |
Inorganic Microfibers |
| Filtration Rating |
12 µm |
| Total Height |
140 mm (5 1/2") |
| Bypass Valve Opening Pressure |
1.75 bar (25 PSI) |
| Outer Diameter |
130 mm (5 1/8") |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| Oxfil |
USD 62.76 |
16 Oct 2026 |
| Hydrafil |
USD 194.95 |
14 Oct 2026 |
| Spare Part Mart |
USD 50.21 |
Today |
Our price of USD 50.21 is 20% to 74% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
Heavy Dust Environments
The 12-micron inorganic microfibre media excels in high-dust conditions, preventing airborne contaminants from entering the oil and causing abrasive wear. This protection extends the service life of pumps, motors, and bearings.
Continuous-Duty Operations
For machinery running around the clock, consistent oil cleanliness is critical. This filter provides dependable filtration, reducing the risk of unplanned downtime and keeping maintenance schedules predictable.
Inventory Consolidation
With cross-compatibility across many major filter brands, a single this filter can replace multiple part numbers. This simplifies stock management for workshops and mobile service vehicles, saving shelf space and ordering time.
Cost-Sensitive Fleets
Aftermarket pricing allows fleet and plant managers to maintain strict oil cleanliness standards without exceeding tight budgets. The filter delivers reliable performance at a fraction of the cost of branded equivalents.
Frequently asked questions
How do I know this filter will fit my machine?
This filter is a direct replacement for oil filters from brands including Airfil, Baldwin, Donaldson, and others listed in the compatibility information. Confirm fitment by comparing the dimensions (140 mm height, 130 mm OD) and filtration rating (12 µm) with your current filter, or cross-reference the original part number with our support team.
What is the filtration efficiency of this filter?
The filter uses inorganic microfibre media with a nominal rating of 12 microns. This effectively captures particles that can cause abrasive wear in hydraulic and lubrication systems, protecting pumps, motors, and valves from premature failure.
What are the physical dimensions and connection details?
The overall height is 140 mm and the outer diameter is 130 mm. The bypass valve opens at 1.75 bar. Please verify that the thread size and sealing surface match your housing to ensure a proper seal and trouble-free installation.
Is this an OEM part?
No, this filter is an aftermarket product manufactured to match the form, fit, and function of the branded equivalents. It is not a genuine OEM part but offers a cost-effective alternative without compromising performance.
How should I install this oil filter?
Installation follows standard procedures. Clean the sealing surface, lubricate the gasket with fresh oil, and spin the filter on until the gasket contacts the base, then tighten as per manufacturer specifications. Always check for leaks after start-up.
What guarantee and shipping options do you offer?
We provide a 30-day money-back guarantee and a price-beat guarantee. Orders are shipped worldwide with tracking, ensuring you receive your filter quickly and with full visibility of the delivery process.