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Filter PL420 can't replace filters PL421

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Fuel Filter Manufacturer & Supplier from China OEM & ODM • Spin-on & Inline Fuel Filters • MOQ 60 pcs Filters King is a professional manufacturer and supplier of high-quality fuel filters from China. We specialize in OEM & ODM services, offering spin-on, inline, and fuel water separator filters with low MOQ and worldwide shipping. Find the perfect filter for your equipment and ensure reliable engine performance. Fuel Filter Key Features Our fuel filters are designed to deliver high performance, long-lasting durability, and reliable protection for your engines. Explore the key features that make our filters compatible with top brands and ideal for a wide range of applications. Icon Feature Description Wide Compatibility Compatible with Baldwin, Donaldson, Fleetguard, Mann, Parker, Wix, and more. Premium Material ISO-certified materials, heat-resistant and corrosion-resistant for long life. High Efficiency Precision filter design extends engine life and reduces failure rates. Fast Delivery Global shipping with low MOQ of 60 pcs, ideal for wholesalers and retailers. Explore Fuel Filter Types Spin-on Fuel Filter Easy to replace whole cartridge, ideal for cars, trucks, and machinery. Inline Fuel Filter Installed in fuel line, compact design suitable for motorcycles and small engines. Fuel Water Separator Separates water and contaminants from diesel fuel to protect engines. Request Quote Cartridge Fuel Filter Replaceable filter element with fixed housing, suitable for heavy machinery. Applications of Fuel Filters Our fuel filters are trusted in multiple industries to ensure clean fuel delivery, prevent engine damage, and extend equipment life. Explore the key applications below: Automotive & Trucks Protects passenger cars, commercial vehicles, and trucks by ensuring clean fuel injection and engine efficiency. Construction Machinery Used in excavators, loaders, bulldozers, and other heavy equipment to prevent costly downtime. Agricultural Equipment Reliable filtration for tractors, harvesters, and farming machinery, ensuring smooth operation in tough conditions. Marine Engines Specialized filters to separate water from fuel, protecting boat and ship engines from corrosion and failure. Generators & Industrial Engines Ensures stable power supply by keeping diesel generators and industrial engines free from contaminants. Contact Us Looking for high-quality fuel filters or need a custom solution? Get in touch with our team today. We are ready to support your business with reliable products and fast service. CHINA EVERLASTING PARTS CO., LIMITED WhatsApp/Wechat: +86 18965520297 WhatsApp/Wechat: +86 18144082725 Email: Sales@filters-king.com Website: www.filters-king.com

Filter PL420 can't replace filters PL421
2019-06-21

In the past, the PL420 was used as the first primary filter for the fuel tank girders. There is no pressure. The common rail is pressurized, and the PL420 is under negative pressure.


Before the appearance of the electronic pressure pump, the transparent cup is very safe, there is no pressure damage to the transparent cup, but with the advent of the electronic pressure pump, the engine's two coarse filters change from negative pressure to 4 positive pressures or even greater pressure. The old-fashioned PL420 transparent cup has the risk of oil leakage.


Some OEMs changed the PL420 on the engine to the PL421 without a cup. However, some OEMs did not consider this problem. They still loaded the PL420. (There are now Delong) there are design risks.


It is recommended to use the filter PL421 for models equipped with an electronic pump.


Filters PL420 and PL421, we can provide, if you need, please feel free to contact us.


Filters PL420 and PL421

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