Primary Fuel Filter 4395037 439-5037 FS19754 for Cat C15

Applications:

CATERPILLAR   140 H3176 B 3NL1->3176 B 9WK1->3456345 B II LME365 B II631 E SERIE II69 FAD 40D 350 ED 350 E SERIE IID 400 ED 8 LGRPE ELECT 3412 CGRPE ELECT 3412 STAGRPE ELECT 3412 STA 3GRPE ELECT 3456R 1300 GR 1600 GR 2900 G
FENDT  KATANA 50KATANA 65
FORD  CARGO 1832DC 4x2CARGO 3936M 8x4CARGO 4135D 8X4CARGO 4136D/M 8X4F-MAX 7.3
HAMM  3410341 280-16GRW 280-20GRW 280-24HD 110HD 110HD 110HD 110 PLUS VVHD 110 VVHD 120 VVHD 130HD+ 140 VOHD+ 140 VV/IHD 150 TTHD 90HD 90HD 90HD 90 VOSHD 90 VT-SHD 90 VVS
INGERSOLL RAND  12.250 POWER17.2409.235
KAESER  M 122M 122.1M 123M 250M 270M 350
KALMAR  DCD 200-12 LBDCD 220-12DCE 160-12DCE 330-12DCE 90-6DCF 250-12 LBDCF 80DRF 100DRF 450-60 S5DRF 450-65 S5TR 618 I AL
KASSBOHRER-SETRA  S 411 HDS 411 HD TOP CLASSS 411 HD TOP 415 HS 415 HDH TOP CLASSS 415 HDH TOP CLASSS 415 HDH TOP CLASS

Professional Primary Fuel Filter 4395037 439-5037 FS19754 for Cat C15

Q: How many fuel filters does a C15 cat have?

Caterpillar C15 engines usually have a fuel filter. This filter is a key part of the fuel system. It removes impurities to protect the fuel injection system. In some applications, like construction machinery or generator sets, auxiliary fuel filters may be added. A two-stage filtration system might also be used. But the standard setup is still mainly single.

If multiple filters are found, they may involve additional components. These could include oil-water separators or pre-filters. They are not the main fuel filter itself.

Q: Which fuel filter is primary and secondary?

In the fuel filter system, the distinction between primary and secondary filters is mainly based on filtration accuracy and process sequence. The primary filter is responsible for initial filtration, intercepting larger particle impurities; The secondary filter performs finer filtration to ensure the final cleanliness of the fuel.

The primary filter is usually located at the front end of the fuel system, such as installed at the front end of the fuel pump suction line, or as a built-in filter inside the fuel tank. Its filtration accuracy is low, and it can intercept particles with a diameter greater than 10 microns, playing a role in protecting subsequent components. The secondary filter is generally located near the high-pressure fuel pump or injection system, with high filtration accuracy. It often uses multi-stage filter materials (such as high-density filter paper and felt layer), which can adsorb smaller particles and gum, ensuring that the fuel entering the combustion chamber meets the standards. In diesel engines, the primary filter is often referred to as the coarse filter, while the secondary filter is the fine filter. The two work together to form a two-stage system of "coarse filter → fine filter".

Q: What is the purpose of the primary fuel filter?

The primary fuel filter is a critical component in the fuel system, mainly used to remove larger impurities and particles from the fuel, usually serving as the first filtering barrier.
Its core uses include: firstly, intercepting large-sized impurities, effectively removing particles with a diameter exceeding 100 microns, such as rust, metal debris, etc., to prevent these pollutants from entering the subsequent system;

Secondly, protect precision components and reduce the risk of wear and blockage of key components such as fuel pumps and injectors through initial filtration;

In addition, it can improve system reliability, reduce the burden on the fine filter, ensure stable fuel supply, and is particularly important for maintaining efficient operation in diesel engines.