Larsen Supply Company LAR0-3813 Brass Stem Extension

Product Description

The LARSEN SUPPLY COMPANY LAR0-3813 is a brass stem extension designed for faucet and valve repair applications. It connects two 20-point threaded stems, allowing a plumber to extend stem reach when the existing stem falls short of the handle or packing nut position. Machined from brass, this extension provides corrosion resistance and durability in both hot and cold water service. It is a common repair component used when replacing or rebuilding compression-style faucet valves where stem length is a limiting factor.

This stem extension is suited for residential and light commercial plumbing repair work. It is typically installed during faucet rebuilds where the replacement stem does not match the original depth of the valve body, or where a wall-mounted valve requires additional stem length to properly engage the handle trim. Licensed plumbers and experienced DIYers performing faucet stem replacements will find this a straightforward fitment solution.

Key Features

• 20-point threaded connection on both ends for secure stem-to-stem coupling
• Brass construction for corrosion resistance in potable water service
• Provides stem length extension in compression-style faucet valve repairs
• Compact design for use in tight valve cavities

Compatibility

Designed as an OEM-style replacement component for compression faucet stem assemblies requiring a 20-point threaded extension on both ends.

Installation Notes

Installation should be performed by a licensed plumber or qualified tradesperson. Shut off the water supply and relieve line pressure before disassembling any faucet or valve. Hand-thread the extension onto the existing stem to confirm engagement before applying tool force, as cross-threading brass fittings can damage the part. Work must comply with applicable local plumbing codes, including IPC requirements for potable water system repairs.

Technical Specifications

• Thread Size (Both Ends): 20PT
• Material: Brass

Standard Information

• Brand: LARSEN SUPPLY COMPANY
• Manufacturer Part Number: LAR0-3813