1. Bosch P2056 Oil Filter
Description:
Bosch P 2056 is a spin on engine oil filter designed to refine and clean engine oil before it circulates through the engine and related components. Spin on oil filters like this protect the engine and (if equipped) turbochargers by removing contaminants and particulates, helping to extend engine life and maintain smooth performance. The filter uses a standard 3/4″ 16 UNF threaded connection and ~76 mm diameter typical of many passenger vehicle applications.

2. Bosch P3033 Oil Filter
Description:
Bosch P 3033 is a full flow spin on oil filter that separates dirt and residues from the engine oil to reduce premature oil aging and protect engine components. It typically features a 3/4″ 16 UNF threaded fitting, ~123 mm height, and an internal return check valve to help maintain correct oil pressure. Its size and design make it suitable for various petrol and light duty diesel engines in passenger cars and utility vehicles.

3. Bosch P3050 Oil Filter
Description:
Bosch P 3050 (part number 0 451 103 050) is a spin on filter commonly used on various older European passenger cars (e.g., classic BMW models). It features a 3/4″ 16 UNF thread, roughly 89 mm height, and broad compatibility with engines requiring reliable full flow filtration. Typical bypass valve opening pressure is around 2.2 bar, providing efficient oil circulation and pressure maintenance under normal operating conditions.

4. Bosch P3086 Oil Filter
Description:
Bosch P 3086 is another spin on engine oil filter designed for everyday use in passenger vehicles. It has a 3/4″ 16 UNF threaded connection, approximately 123 mm height, and a ~76 mm diameter. Like others in the Bosch range, it removes contaminants from engine oil, helping to protect critical components and improve engine longevity.

5. Bosch P3105 Oil Filter
Description:
Bosch P 3105 is a spin on oil filter with a compact 85 mm height and standard 3/4″ 16 UNF thread. It includes two non return valves to help ensure oil pressure stays up even during brief low pressure conditions (e.g., cold starts). This filtration element is suitable for smaller engines or applications with limited filter mounting space.

6. Bosch P4026 Oil Filter
Description:
Bosch P 4026 is a full flow spin on filter that protects engine oil from contaminants. It uses a larger 13/16″ 16 UN thread, ~89 mm height, and includes two non return valves to support stable oil pressure. The slightly larger thread makes this filter suitable for applications with heavier oil flow requirements or engines with different mounting standards.

7. Bosch P2003 Oil Filter
Description:
Bosch P 2003 is a classic spin on engine oil filter with a larger body compared with some other filters in this group (roughly 111 mm height and ~94 mm diameter). These dimensions make it common in a range of passenger cars, light trucks, and vans. It typically uses the 3/4″ 16 UNF thread and is often cross referenced with OEM filters for Toyota, Ford, Chrysler, and VW vehicles.

General Function of Bosch Spin On Oil Filters
Bosch spin on filters are designed to trap particulates and contaminants that accumulate in engine oil, ensuring cleaner oil circulates through bearings and other moving parts. Quality filtration helps reduce engine wear, maintain oil pressure, protect turbochargers, and improve overall engine reliability. Many Bosch filters include non return or check valves to help maintain oil pressure when the engine stops, reducing wear at the next start.