The Perkins Air Filter 901-056 is a high-efficiency engine intake air filter designed to prevent dust, dirt and airborne particles from entering diesel engines. It serves as a primary filtration element that protects vital engine components from abrasive contaminants, ensuring cleaner combustion and longer engine life.
This filter is widely used on Perkins 1100 and 1200 series engines and other diesel generator and heavy-duty engine applications. It is also cross-referenced with equivalent part numbers from other brands such as Fleet guard, Donaldson and Caterpillar, making it a versatile choice for mixed equipment fleets.
Where It Is Used
-
Perkins diesel engines (especially 1100 & 1200 series) installed in industrial machinery and generators
-
FG Wilson generator sets and similar generator applications
-
Heavy equipment requiring robust air filtration in dusty or harsh environments
-
Engines where cross-referenced filters like AF27840, P780331, RS4561 or CAT 289-2348 are specified
Key Features
-
High-efficiency filtration: Captures fine dust and contaminants while maintaining airflow for optimal combustion.
-
Durable construction: Rigid filter media and strong end caps resist vibration and pressure changes.
-
Exact fit: Designed to drop into original filter housings without modification.
-
Engine protection: Helps reduce wear on injectors, cylinders and other internal parts.
-
Broad cross-reference compatibility: Works as replacement for multiple OEM part numbers.
Why It Matters
Replacing your air filter at recommended intervals helps maintain engine efficiency, fuel economy and durability — especially in dusty conditions where airborne particles can accelerate engine wear.
