165 Replacement Pump Assembly with Flywheel, Single-Stage, 5 - 6.5 HP #05AD8A

For 5 to 6.5 HP units. 165 Air Compressor Pump with felt air filter to replace the original pump. Flywheel INCLUDED. Simply install the belt and discharge tube, add oil, and run.

Important: Be sure to torque the head bolts down after the first 5 hours of running new pump; this will ensure the head gaskets don't blow out.

Note: New style pump has 1/4" FPT & 1/8" FPT outlet ports in head (your old head may be 1/2" and will need an adapter). Part# 135-40042-SP is the adapter for old pumps with a 3/8" OD discharge tube; Part# 135-40062-SP is the adapter for old pumps with a 1/2" OD discharge tube.

Need oil? Click here for synthetic and synthetic-blend air compressor oil to keep your compressor running like new for years to come.

• HP: 5 to 6.5 HP
• Stages: Single-Stage
• SCFM Delivery: 10.1 CFM @ 90 PSI
• Max PSI: 155 PSI
• Material of Construction: aluminum with steel sleeves
• Flywheel: 12" OD single "A" groove (4L-style)
• RPM: 700 / 1,100 (depending on pulley diameter)
• Duty Cycle: 80/20
• Oil Capacity: 18 oz.
• Weight: 26 lbs.
• Bolt Pattern: 5.75" front-to-back, 5.87" side-to-side
• Outlet: 1/4" FPT (exhaust on the left side of the pump head when looking opposite the flywheel)
• Warranty: 1 year limited for Residential use / 90 days for Commercial use

• Serving Customers Since 1994: For more than 30 years, Master Tool Repair has been a trusted source for air compressor parts, repair kits, and expert guidance.
• Quality Parts: We stock a wide selection of high-quality OEM and aftermarket parts for all major air compressor brands.
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