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The CONTINENTAL CONTITECH 20043144 is an L-series positive-drive timing belt designed for synchronous power transmission in light industrial, HVAC, and mechanical drive applications. Constructed from nylon with a fiberglass tension cord, this belt delivers consistent pitch accuracy and resistance to elongation under load. It carries 104 trapezoidal teeth on a 39.0-inch internal length, conforming to the standard L-section designation. Mechanical technicians and HVAC service professionals install this belt type in blower drives, fan assemblies, and other equipment requiring precise, slip-free synchronization between drive and driven components.
This belt fits drive systems designed around the L-section (3/8-inch pitch) standard. It is suited for residential and light commercial equipment where positive-drive timing belts are specified, including blower assemblies, fan drives, and general mechanical drive trains. The 390L belt number identifies it within the L-series family, making cross-referencing to OEM drive specifications straightforward. Install this belt wherever the original equipment specifies a 390L or equivalent L-section timing belt with 104 teeth.
Designed as an OEM-style replacement for drive systems specifying an L-section timing belt with belt number 390L and 104 teeth. Verify drive sheave tooth count, belt section, and center distance before installation.
Timing belt replacement should be performed by a qualified mechanical or HVAC technician. De-energize and lock out the equipment fully before removing any belt guards or covers. Do not force the belt over sheave flanges; adjust center distance to allow proper belt seating, then tension according to the drive manufacturer specification. Inspect sheave teeth and bearings for wear before installing a new belt.
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