What vehicles does P550367 fit?

BELARUS  MTZ 2022MTZ 2522 DWMTZ 3022 DW
BOMBARDIER  300 MP
CLAAS  LEXION 440LEXION 440XERION 3000
DETROIT  40 SERIES

Precision Detroit Diesel Oil Filter P550367 5241840501 901-115 10000-51228

Q: What filters does Detroit Diesel use?

Detroit Diesel engines use filters of different specifications depending on the engine model and purpose (such as generator sets, trucks, ships, etc.). Common types of filters include diesel filters, oil filters, air filters, etc. The specific model needs to match the engine model.

Q: How does an oil filter work in a diesel engine?

The oil filter in diesel engines is a key component of the lubrication system. Its core function is to filter impurities in the engine oil, ensuring that the lubricating oil entering the moving parts of the engine remains clean, thereby reducing wear and extending engine life.

Working Principle

The operation of the oil filter is based on pressure driven filtration and safety bypass mechanism, and the specific process is as follows:
1. Oil suction and entering the filter
When the engine is running, the oil pump extracts oil containing impurities such as metal debris, carbon particles, and gum from the oil pan, and sends it at a certain pressure into the inlet of the oil filter.

2. Filter through filter paper
Under pressure, the engine oil pushes open the check valve and flows through filter paper (usually a folded high-density fiber material). Impurities are trapped on the surface or internal pores of the filter paper, while clean engine oil enters the central pipe through the filter paper and ultimately returns to the main oil passage of the engine through the oil outlet, lubricating key components such as the crankshaft, connecting rod, and camshaft.

3. Accumulation of impurities and changes in pressure difference
As the usage time increases, impurities gradually accumulate on the filter paper, leading to an increase in flow resistance and an increase in pressure on the outside of the filter paper.
4. Emergency opening of bypass valve
When the filter paper is severely clogged and the pressure difference reaches the set threshold, the bypass valve automatically opens, allowing unfiltered oil to flow directly into the engine. This is to prevent engine damage caused by complete blockage leading to lubrication interruption - although dirty oil is provided at this time, basic lubrication is guaranteed.

Check valve prevents backflow

After the engine is turned off, the check valve closes to prevent the oil in the filter from flowing back to the oil pan, ensuring that the oil pressure can be quickly established during the next cold start, achieving "instant lubrication"

Q: Where is the oil filter on a Detroit engine?

"Detroit Diesel" typically refers to engines produced by Detroit Diesel, a subsidiary of General Motors (GM), or its affiliated brands, widely used in commercial vehicles, heavy-duty trucks, ships, and industrial equipment. The location of the oil filter in these engines differs slightly from that in passenger cars but follows general principles.

The oil filter of Detroit engines (such as common heavy-duty truck models like DD13 and DD15) is typically located at the front or side of the engine, near the oil pump and main oil passage area. Specific characteristics are as follows:
• Common locations: Top front or front side of the engine, for easy maintenance;
• Installation method: Mostly a spin-on filter, secured to the filter housing via threaded connections;
• Identification features: Typically a cylindrical metal casing, labeled "Oil Filter" or with a brand logo
• Operation Instructions: Before replacement, drain the old oil and remove it using a dedicated wrench.

Due to layout differences among various models (such as DD6, DD8, DD13, DD15), the most accurate method is to consult the maintenance manual for the corresponding vehicle model.