Continental Contitech 20042707 Cogged V-belt 3L 39 in

Product Description

The CONTINENTAL CONTITECH 20042707 is a fractional horsepower cogged V-belt designed for light-duty power transmission in HVAC, refrigeration, and general mechanical drive applications. Manufactured from high traction rubber, this belt features a cogged (notched) construction that increases flexibility, reduces heat buildup, and improves grip on smaller-diameter sheaves. It carries a 3L section profile with an outside length of 39.0 inches and an internal length of 38.30 inches. The cogged design makes it well-suited for high-cycle drives where a conventional wrapped belt would generate excess heat or slip under load.

This belt is used in residential and light commercial equipment including HVAC air handlers, evaporator coil fans, furnace blower assemblies, small compressors, and shop equipment running fractional horsepower motors. The 3L section is a standard fractional horsepower profile, making it a common replacement belt across a wide range of belt-driven fan and blower systems. HVAC technicians and general maintenance professionals routinely stock 3L-series belts for scheduled maintenance and emergency replacements on single-phase blower drives.

Key Features

• Cogged (notched) construction improves flexibility and reduces heat on small-diameter sheaves
• High traction rubber compound provides reliable grip under load
• Abrasion resistant and ozone resistant for extended service life
• Wide operating temperature range: -40 degrees F to 284 degrees F (-40 C to 140 C)
• 3L section profile fits standard fractional horsepower sheaves
• Outside length of 39.0 inches with 38.30-inch internal length for consistent tensioning

Compatibility

Designed as an OEM-style replacement for fractional horsepower belt-driven fans, blowers, and light mechanical drives using a 3L section sheave. Belt number 3L390 is a widely recognized standard designation for this size and section.

Installation Notes

Belt replacement on belt-driven blower assemblies should be performed by a qualified HVAC technician or mechanical maintenance professional. Always disconnect and lock out electrical power to the unit before removing belt guards or accessing the drive assembly. Adjust motor position or tensioning hardware to relieve tension before removing the old belt, and verify proper sheave alignment and tension after installing the new belt. Do not force the belt over sheave flanges using a tool, as this can damage the belt cords.