6.4778.0
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6.4778.0
How to Install a Drop-In Oil Filter on a Rotary Screw Air Compressor

Kaeser Oil Filter Replacement - 6.4778.0

Kaeser ReplacementSKU: 6.4778.0
Price:
$155.50
Stock:
In Stock

Description

Kaeser Oil Filter Replacement - 6.4778.0

Protect your compressor’s lubrication system and ensure dependable performance with the Kaeser Oil Filter Replacement - 6.4778.0. This high-efficiency oil filter is designed to remove fine contaminants, sludge, and debris from circulating oil, helping maintain clean lubrication, reduce wear, and extend the life of critical compressor components in demanding industrial environments.

  • Advanced Filtration Efficiency – Effectively captures particles and impurities to keep oil clean and protect internal parts from premature wear.
  • Consistent Lubrication Flow – Maintains stable oil circulation and pressure for smooth, efficient compressor operation.
  • Heavy-Duty Construction – Built from premium filter media and durable seals to withstand high pressure and continuous-duty use.
  • OEM-Exact Compatibility – Designed to meet Kaeser specifications for precise fit, secure sealing, and dependable performance.

Keep your compressor running smoothly and reliably with the Kaeser Oil Filter Replacement - 6.4778.0, engineered for superior filtration, long-lasting durability, and consistent protection for your lubrication system.

Why Choose Us?

  • OEM-Equivalent Quality: Our parts meet or exceed OEM standards - at a fraction of the price. You're not paying extra for a logo.
  • Not Just Another Marketplace: We're not just a place to buy parts or oil. We're compressor experts who can provide personalized guidance and reliable support.
  • All Brands, No Restrictions: Unlike many distributors who are tied to OEM agreements, we sell and service parts for all major compressor brands. Can't find what you need? We'll help you get it.
  • USA-Based Support: Talk to real people in Greenville, SC, who know compressors and are ready to help.

Still curious? Learn more about our Inlet to Outlet™ Promise and see why so many customers trust us as their go-to compressor partner.

Other Kaeser Products to Check Out:

In addition to the Kaeser Oil Filter Replacement - 6.4778.0, we have Kaeser Air Filters, Kaeser Oil Filters, Kaeser Separators, Kaeser Oil and more to help you keep your Kaeser Compressor in top shape.

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Frequently Asked Questions

What does this oil filter do?

This replacement oil filter removes wear particles and contaminants from the compressor’s lubrication system. Keeping the oil clean protects bearings, rotors, and internal components so the machine can operate efficiently and reliably.

How often should this oil filter be replaced?

Oil filters on rotary screw compressors are typically replaced every 2,000 operating hours as part of a standard preventative maintenance interval. Units running in harsh or dirty environments may require more frequent changes.

What happens if this oil filter is not replaced on time?

When an oil filter becomes saturated, it can restrict oil flow or allow contaminants to circulate through the system. This leads to higher operating temperatures, reduced lubrication efficiency, and accelerated wear on internal parts.

Is this compatible with my compressor?

This replacement filter fits compressors that specify Kaeser part number 6.4778.0 / 6-4778-1. It is commonly used on Kaeser rotary screw models such as ASD35, ASD40, ASD50, and ASD60 (depending on configuration), along with other Kaeser units that require this filter number. Always match your original part number to confirm compatibility.

How do I know when it’s time to replace the oil filter?

Signs include restricted oil flow, increased operating temperature, visible contamination during inspection, or simply reaching the recommended maintenance interval. Following your machine’s maintenance plan prevents premature wear and downtime.

Is installation difficult?

Most installations are straightforward: shut down the compressor, relieve oil pressure as required, remove the used filter, and install the new one according to your machine’s service instructions. Always follow proper safety and lockout/tagout procedures.

Can this oil filter be used in any compressed air system?

No. This filter should only be used in systems that call for Kaeser oil filter number 6.4778.0 / 6-4778-1. Compressors that specify a different part number require the corresponding filter for proper fit and performance.

Where do these products ship from?

All replacement parts ship from our warehouse in Greenville, South Carolina. Orders go out fast, and our support team is based here too, so you get quick shipping and real help if you need it.