Comet 209139A Go Kart Torque Converter Driven Clutch 7/8" Bore 40 Series

This Comet 209139A Go Kart Torque Converter Driven Clutch is a driven clutch compatible with for Comet torque converters and references part number(s) 209139A, 209139, and 464778.

Product Overview

The Comet 209139A Go Kart Torque Converter Driven Clutch 7/8 inch Bore 40 Series is a high-performance mechanical component designed for medium-range torque converter systems. Engineered for vehicles powered by 8 HP to 18 HP engines, this driven pulley acts as a critical speed and torque regulator by reacting to engine load and rotational speed. Constructed with heavy-walled stamped steel, it provides a durable and reliable solution for off-road go-karts, mini bikes, and utility vehicles.

Key Features & Performance

• Designed for 40 Series torque converter systems to optimize low-end torque and high-end speed
• Features a 7/8 inch bore with a 3/16 inch keyway for secure jackshaft mounting
• Constructed from heavy-walled stamped steel to withstand demanding off-road conditions
• Utilizes a symmetrical design to ensure consistent belt alignment and smooth shift transition
• Supports an engagement range of 1600 to 3300 RPM for responsive acceleration

Fitment & Compatibility

• for Comet 40 Series torque converters
• for Briggs engines with horizontal shafts
• for Honda engines and clones with horizontal shafts
• for Kohler engines with horizontal shafts
• for Robin engines with horizontal shafts
• for Tecumseh engines with horizontal shafts

Common Uses

• Replacing a worn or slipping 40 Series driven clutch on yard karts and mini bikes
• Upgrading utility or recreational vehicles to a torque-sensitive drive system
• Restoring proper shifting and belt tensioning in off-road vehicles

Technical Specifications

• Product Type: Driven Clutch
• Part Number(s): 209139A, 209139, 464778
• Brand Compatibility: for Comet
• Bore Size: 7/8 inch
• Keyway: 3/16 inch
• Outside Diameter: 7-1/2 inches
• Belt Type: Symmetrical (7/8 inch top width)
• Engine Compatibility: 8 HP to 18 HP

Frequently Asked Questions

Q: How do I verify if this driven clutch fits my vehicle? A: You should verify that your jackshaft has a 7/8 inch diameter and uses a 3/16 inch keyway, and that your system is a 40 Series torque converter using a 7/8 inch top width symmetrical belt.

Q: What orientation should this driven clutch be installed in? A: This 40 Series symmetrical driven clutch is designed to mount inboard on the jackshaft with the tension spring facing toward the engine.