4HP Air Compressor Pump 12.7CFM, Replacement Pump Head

Key features

• 4HP 3-Cylinder Pump – 12.7 CFM Heavy-Duty AirflowMatched with a 3KW/4HP motor, delivering 0.36m³/min (12.7 CFM) displacement – 65mm x 3 cylinders for greater air volume. Outperforms twin-cylinder pumps – keeps all your shop air tools running without pressure drop.
• Cast Iron + Aluminum Hybrid Construction – Built for the Long HaulCast iron crankcase with aluminum cylinders – high strength, fast heat dissi-pation, and warp-resi-stant. Extended cylinders increase stroke for faster inflation. Net weight 21kg – heavy enough to stay stable.
• 3 Air Filter Mufflers Included – Quiet & Clean OperationEach cylinder comes with an independent air filter muffler –while reducing noise. Keeps your workshop quieter during long runs. Replace filters every 2-3 months to maintain peak performance.
• Large Crankcase + Leak-Resistant Design – Smooth & ReliableLarge crankcase design ensures stable operation and reduces oil leakage. Fill with compressor oil before first use– oil level to the center of the sight glass red dot. Change oil after 2 weeks, then 6 weeks, then every 4-5 months. Check oil level regularly and top up as needed.
• Industrial-Grade Replacement Pump – Workshops, Garages & MoreIdeal for factories, auto repair shops, workshops, and construction sites. Compatible with 3KW/4HP motors – direct replacement for worn or damaged pump heads. Note: Pulley speed ≤1000r/min – align motor and pump pulleys during installation. Clockwise rotation – reverse if needed.

p>Color: Black Material: Cast iron, aluminum alloy Power source: Electric Cylinders: 65 mm × 3 Maximum working pressure: 0.8 MPa/115 PSI Maximum Speed: 1030 rpm (matched to the machine’s speed) Air Flow Rate: 0.36 m³/min / 12.7 cfm Hose Connection: 19 mm / 3/4 inch Matching Motor Power: 3 kW / 4 HP Gross Weight: 21 kg / 46.29 lbs Packaging Dimensions: 44 × 33 × 38 cm / 17.32 × 12.99 × 14.96 inches Product Description This air compressor features high hardness, tensile strength, and compressive strength, ensuring reliable and worry-free operation. Its powerful heat dissipation capabilities allow the machine to cool down quickly. The air filter and silencer ensure quiet operation. It will be a great tool to help you improve your work efficiency. Precautions 1. Note: The pulley speed should not exceed 1,000 RPM. 2. The unit must be matched to the motor’s power rating. Please check the product specifications before ordering. 3. When installing the pump head, the motor pulley and the pump pulley must be aligned in a straight line. The more precise the alignment, the less vibration there will be. 4. After installing the mounting screws, tighten the belt. If the belt is loose, adjust the

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