The Hatz 50638300 Secondary Air Filter is a genuine OEM component designed to provide an additional layer of protection in the air intake system of Hatz 3H50 and 4H50 Series diesel engines. This secondary (safety) filter element works in conjunction with the primary filter to prevent contaminants from entering the engine during filter maintenance or in the event of primary filter failure.
Key specifications include:
- OEM Part Number: 50638300
- Application: Hatz 3H50TI, 3H50TIC, 3H50TICD, 4H50TI, 4H50TIC, 4H50TIC-DPF, 4H50TICD engines
- Function: Acts as a backup filter to protect the engine during primary filter servicing
- Dimensions: Length: 344.5 mm; Outer Diameter: 78.5 mm; Inner Diameter: 74.6 mm
- Material: High-quality filter media designed for durability and efficient filtration
This secondary air filter is commonly used in diesel generator systems and industrial equipment powered by Hatz 3H50 and 4H50 Series engines. Its robust construction ensures reliable operation, which is essential for maintaining engine performance and preventing airborne contaminants from causing damage.
Please confirm compatibility with your engine’s build list or documentation before purchase.
This part may fit other engines not listed here.


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