Lf777 High-Performance Oil Filter for Generators and Engines

• After-sales Service: Yes
• Warranty: /
• Type: Filter
• Model NO.: LF777
• Certification: TUV
• Customization: -
• Level: -
• Size: -
• Weight: -
• Transport Package: /
• Specification: /
• Trademark: Yibolan
• Origin: Shandong, China
• Production Capacity: 50000/Year
• Package Size: 1.00cm * 1.00cm * 1.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

 

What is Fuel Filter Element?

Most heavy-duty trucks use diesel engines. These filter elements primarily remove iron oxide, moisture, and impurities from diesel fuel. Typically featuring two-stage filtration: the first stage is a fuel/water separator that removes water from diesel; the second stage is a diesel fine filter that further removes minute impurities. Some specialized heavy-duty trucks also incorporate natural gas filter elements to accommodate different fuel types.

In truck fuel filtration systems, the coarse filter and fine filter are two-stage series filtration devices. Their core function is to progressively intercept impurities in the fuel, protecting precision components such as the high-pressure fuel pump and injectors. The filtration precision, installation location, and functional roles of these two filters are distinctly different.

4.1. Coarse Fuel Filter (also known as Fuel Pre-filter)
Core Definition: Serves as the first filtration barrier before fuel enters the engine, primarily intercepting large particulate contaminants.
Filtration Precision: Typically ranges between 10-30 microns. Some heavy-duty truck coarse filters achieve 5-micron precision, mainly filtering large-volume contaminants like rust, silt, and gummy hardened deposits from fuel.
Additional Function: Most truck fuel coarse filters integrate a water separator function, separating water mixed into the fuel (water in diesel can cause injector corrosion and fuel pump wear). They also feature a water level sensor that alerts the driver to drain water when the level exceeds the threshold.
Installation Location: Typically located in the fuel line on the outside of the frame, near the fuel tank outlet, for easy daily maintenance and drainage operations.

4.2. Fuel Fine Filter (also called Fuel Microfilter)
Core Definition: Serves as the final filtration barrier before fuel enters the high-pressure fuel pump, intercepting minute contaminants missed by the coarse filter.

Filtration Precision: Significantly higher than coarse filters, typically 2-5 microns, capturing microscopic particles invisible to the naked eye-such as gummy particles and carbon residue in fuel.

Core Function: Directly protects the engine's high-pressure common rail system (including the high-pressure fuel pump and injectors). These components operate with extremely tight tolerances (micron-level), where even minute contaminants can cause severe wear, seizure, and subsequent power loss, increased fuel consumption, or complete engine failure.
Installation Location: Typically mounted adjacent to the engine block, positioned on the fuel line after the coarse filter and before the high-pressure fuel pump.

Core Coordination Logic Between Coarse and Fine Filters
After exiting the fuel tank, fuel first passes through the coarse filter, which intercepts large particles and separates water, reducing the filtration load on the fine filter. It then flows through the fine filter to remove microscopic particles before delivering clean fuel to the high-pressure common rail system. This two-stage filtration forms a progressive "coarse-then-fine" defense, extending the fine filter's lifespan while maximizing protection for precision components.

Supplement: Replacement Interval Differences

Coarse Filter: Due to its high impurity interception rate and required drainage, it has a shorter replacement interval. Typically replaced every 10,000-20,000 km or according to the manufacturer's specified maintenance schedule.

Fine Filter: Featuring higher filtration precision and relatively higher cost, it has a slightly longer replacement interval. Usually replaced every 20,000-40,000 km, with specific intervals following the vehicle maintenance manual.
 

Q: Please briefly introduce Weichai's filter elements. 
 

NAME	Model No.	Matching Engines	Core Features
Coarse Fuel Filters	VG61000070005	Multiple heavy-duty truck engines of Weichai	Genuine original filter with 60,000-kilometer long service life, equipped with anti-counterfeiting marks. It has stable filtration efficiency, reduces the frequency of frequent replacement, and is suitable for long-term heavy-load working conditions.
	VG1246070031	Weichai mainstream commercial vehicle engines	OEM original equipment part, focusing on basic filtration protection. It can effectively intercept large-particle impurities such as rust and sediment, and is suitable for daily short-distance transportation or regular load scenarios.
	Z20140023 / Z20140023A	Weichai WP2.1, WP2.3, WP2.5, WP2.7, WP3.2, WP3.7, WP4.1, WP3 engines	Integrated with fuel-water separator function, which can effectively separate moisture in diesel fuel and avoid corrosion of fuel injection pumps and injectors. It is compatible with various truck models such as Howo and Shacman, with strong versatility.
	611600080112	Weichai WP9H series engines (matching BEIBEN heavy-duty trucks)	Customized for WP9H series engines, specifically intercepting impurities easily generated in the fuel pipeline of this model. It has stable structural performance and is convenient for daily maintenance.

 

 

NAME	Model No.	Matching Engines	Core Features
Fine Fuel Filters	1000422382 (Alternative Part No.: 612630080087)	Weichai WP10 series engines (matching JAC and other vehicles)	Genuine special fine filter for Weichai, with high filtration precision (2-5μm). It can accurately intercept tiny colloidal particles and carbon residue in fuel, directly protecting the high-pressure common rail system.
	1000442956 (Alternative Part No.: 612600081334)	Weichai WD615, WD10G220E21 engines (matching Dayun vehicles, Lonking loaders)	Designed for construction machinery and commercial vehicles, it can cope with fuel filtration needs under complex working conditions such as construction sites and mountain roads. It has excellent compatibility and reliable protection performance for high-pressure fuel pumps.
	1000447498	Weichai WP4, WP6, WP6H, WP10H series engines	It has good cross-reference compatibility (matching SN 70413, FC-38080), with high-quality filter material and tight sealing structure. It can effectively extend the service life of the engine's precision components and is suitable for high-load long-distance transportation.
	1000424916 (Alternative Part No.: 612600081335)	Weichai WD10G series engines (matching  ZL50GN and other construction machinery)	It is equivalent to multiple international brand models (such as  R010017), with high filtration efficiency and strong environmental adaptability. It can stably operate in harsh working environments and effectively protect the fuel injection system.

 

Company Profile

•  Qingdao Yibolan Machinery Equipment Co., Ltd. , established in January 2022 , is located in the beautiful coastal city of Qingdao, China. We specialises in the supply of wear parts and maintenance components for commercial vehicles and construction machinery.

Our product range encompasses
filters, 


leaf springs,


brake pads,


brake blocks,


thrust rods,


brake drums,


clutches,


Construction machinery bucket teeth,track plates,four-wheel drive systems,and fasteners.


Since our inception, we have developed our proprietary parts brand (YIWO), with products compatible withdump trucks,


tractor units,


mixer trucks,


cargo trucks,


excavators,


and bulldozers


from brands including Sinotruk (HOWO, SITRAK), Shaanxi Automobile (Delong, Aolong), FAW , Beiben, Shantui, etc. Our components are renowned for their superior quality and competitive pricing, earning widespread customer acclaim.

Since inception, our annual export volume has reached USD 10 million, primarily serving prominent commercial vehicle and construction machinery parts wholesalers and large fleets across the South Pacific, Africa, the Americas, and Southeast Asia. We remain committed to delivering high-performance, reliable, and cost-effective mechanical components, alongside bespoke solutions tailored to client requirements.

Our company currently operates a 3,000-square-metre warehouse centre, maintaining year-round stock of comprehensive vehicle component sets to meet diverse customer requirements. Additionally, we employ over ten technical engineers with 20 years' experience, providing 24-hour online support. Our core values centre on prioritising customer needs, establishing strong partnerships through precise service and support, and jointly achieving sustainable development. We sincerely welcome global buyers to discuss business opportunities.

 

 

 

FAQ

1.Why should be partner with Qingdao YBL ?
• Quality 
Deliver consistently superior performance and pursue every possible improvement.
•  Agility 
Identify emerging trends and act quickly to acquire new opportunities.
•  Customer Satisfaction
Anticipate customer needs and exceed their expectations.

2. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Western Union;
Language Spoken:English,Chinese

3.How about the delivery time ?
Normally, the delivery time is 7 days if we have stock, and 15-30 working days if we don't. That's also depends on the product requirements and quantity.

4.Are you able to make Non-standard or customized products?
Yes, we can.


Welcome to Join us!
Please Feel Free to Contact us at Your Convenience.