MSL18 Max Air Compressor Pump Replacement without Air Filter, Single-Stage, 4 HP (Electric) #0A12F5

Complete MSL18 Max replacement pump assembly for your air compressor. Includes flywheel. The MSL18 Max is a popular replacement pump for many portable, inline single-stage units with only one line coming from the pump head.

NOTE: Does not include air filter assembly, order separately.

• Splash oil-lubricated pump
• Solid cast iron construction (CNC machined - ISO 9002)
• Slotted feet for easy mounting
• Large Swedish stainless-steel reed valves
• Reversible head: right or left discharge
• Oversized crankcase for large oil capacity
• Maximum pressure 140 PSI
• 18 CFM @ 140 PSI (displaced)

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• HP: 4 HP (electric)
• Stages: Single-Stage, Inline Twin-Cylinder
• Drive: Reciprocating / Oil-Bath
• CFM Delivery: 16.5 cfm @ 40 psi (1,190 RPM) / 13.5 cfm @ 90 psi (1,190 RPM)
• Max PSI: 140 psi
• Material of Construction: Cast-iron with steel sleeves
• Flywheel: 11.81" OD single "A" groove (4L-style)
• RPM: 1,190
• Duty Cycle: 80/20
• Oil Capacity: 0.54 qts.
• Weight: 40 lbs.
• Dimensions (LWH): 12.086" x 5.886" x 11.889"
• Bore & Stroke: 3.0" x 1.85"
• Bolt Pattern: 5.53" front-to-back, 5.886" side-to-side
• Outlet: 1/2" FPT
• Warranty: 1 year for Residential use, 90 days for Commercial use

This pump has a 1/2" female NPT hole for the air filter assembly and a 1/2" female NPT hole for the supply line.

Torque specs:

• Cylinder head: 255 in/lbs.
• Cylinder: 149 in/lbs.
• Flywheel: 149 in/lbs.
• Flange: 80 in/lbs.
• Valve Plate: 35 in/lbs.
• Labyrinth Cover: 14.8 in/lbs.