OVERVIEW & BENEFITS
Upgrade or rebuild your softwash or pressure washer pump drive with the 5005/216 Gear Box, engineered for reliable power reduction and smooth operation. This Comet OEM-quality gear reduction box takes a 3/4″ engine shaft input and delivers a 6:1 reduction—ideal for matching high-Revs of gas engines to optimal diaphragm pump speeds.
Built with double ball bearings, helical cut gears, an O-ring sealed housing, and an air vent cap, this gearbox ensures quiet, durable performance under continuous use. It’s compatible with a range of Comet diaphragm pumps like MP20, MP30, P48, APS41, APS51, and APS71 using Loopax or equivalent mounts.
Key Features
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Gear Ratio: 6:1—reduces engine speed to optimal pump RPM
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Input Shaft: 3/4″ (engine shaft coupling)
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Compatibility: Comet MP20, MP30, P48, APS41, APS51, APS71 pump models
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Construction: Double ball bearing support, quiet helical gears
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Sealing: O-ring sealed housing to prevent contamination
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Cooling: Integrated air vent cap for cooler operation under load
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Mount Style: Direct-mount configuration matching Comet pumps