Prime Line Products S 4137C 5-pin Tumbler Mailbox Lock

Product Description

The PRIME LINE PRODUCTS S 4137C is a 5-pin tumbler mailbox lock designed as a direct replacement for Jensen General mailbox lock cylinders. The cylinder body is die-cast with a nickel-plated face, brass pins, plated steel cams, and spring steel locking clips. To open, the lock turns 90 degrees counter-clockwise, with the locked position to the left. Lock body length is 19/64 inches and cam length is 13/16 inches. Each unit ships with one lock and two keys. This lock is installed by locksmiths, property maintenance technicians, and knowledgeable DIYers working on residential or commercial mailbox applications.

The S 4137C is suited for residential and light commercial mailbox installations where Jensen General lock cylinders require replacement. Its compact form factor and included keys make it a straightforward swap for worn or damaged original cylinders. The counter-clockwise opening direction and left locked position are factory-set and match the original Jensen General specification, reducing the need for any adjustment during installation.

Key Features

• 5-pin tumbler cylinder for reliable key-controlled security
• Die-cast cylinder body with nickel-plated face for corrosion resistance
• Brass pins and plated steel cams for durable internal operation
• Spring steel locking clips included for secure mounting
• Opens 90 degrees counter-clockwise; locked position is left
• Includes 1 lock and 2 keys per unit

Compatibility

Designed to replace Jensen General mailbox locks. Confirm cylinder dimensions and cam orientation match the existing installation before ordering.

Installation Notes

Installation is typically performed by a locksmith or property maintenance technician. Ensure the mailbox door is accessible and any existing lock cylinder is fully removed before inserting the replacement. Verify the cam orientation and locked position direction prior to securing the locking clips. No special tools are required beyond basic hand tools for most standard mailbox configurations.