4T6788 Caterpillar hydraulic filter（4T-6788）

Optimized for Caterpillar compact and mid-size machinery hydraulic systems, the 4T6788 filter captures contaminants with precision. Boasting robust dirt-holding capacity, it efficiently removes metal shavings, sludge and fine abrasive particles from hydraulic fluid. By preserving optimal oil cleanliness, it protects precision valves, pumps and cylinders. It ensures low-resistance fluid flow, cuts component wear, and stabilizes hydraulic system performance in high-cycle, heavy-load conditions.

Precision-made to strict dimensional specs, this filter enables direct replacement with no extra modification. For example, it’s fully compatible with a range of Caterpillar machinery and hydraulic systems, including:

It uses high-density glass fiber blend filter media. Thanks to this design, it balances efficient fine particle filtration with excellent hydraulic fluid flow. The durable metal housing offers superior pressure and impact resistance, which withstands intense system vibration and temperature swings in harsh job sites. A premium nitrile rubber seal creates a leak-proof fit, thereby preventing unfiltered fluid bypass and ensuring long-term sealing reliability for continuous operation.

This filter hits over 98% efficiency for particles ≥10 microns. In addition, it keeps hydraulic fluid pure and extends core component service life. Its large dirt-holding capacity lengthens replacement cycles, thus cutting maintenance frequency and downtime, lowering operational costs for compact Caterpillar machinery. It performs consistently in dusty construction, landscaping, and light agricultural work sites.

Designed for Caterpillar compact construction and utility machinery, the 4T6788 hydraulic filter is widely used in small construction, road maintenance, landscaping, and light industrial operations. All in all, it delivers reliable hydraulic system protection, minimizes component wear risks, and supports steady, long-lasting machinery operation during daily heavy-duty use.