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Prime-Line MP4051 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – XL-7 Keyway, Opens Clockwise with 90º Rotation, Nickel Finish (1 Set)

4.8 (1) Write Review
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$5.69

$ 2 .99 $2.99

In Stock

About this item

  • REPLACEMENT LOCK – This multipurpose Prime-Line replacement mailbox lock is an easy fix and can easily replace lost or broken mailbox locks. Features 1 cam and an XL-7 key
  • WORKS FOR SEVERAL BRANDS – This replacement mailbox lock work with Dura Steel mailboxes manufactured from January 1967 to October 1975
  • INCLUDES – Replacement lock kit includes a total of 5 zinc-plated steel cams, brass pins, a spring steel locking clip and 2 keys.
  • LOCKING SECURITY FEATURE – This lock has a security feature that prevents the key from being removed when in the unlocked position, which prevents forgetting the key, and ensuring the mailbox is locked every time it’s used.
  • NOTE – This mailbox lock unlocks by turning the included keys in a in the clockwise direction and has a retaining clip


The Prime-Line MP4051 Diecast 5 Pin XL-7 Keyway Mailbox Lock and Key Set makes it easy to secure your mail. It is designed for use with mailboxes manufactured by Dura Steel mailboxes manufactured from January 1967 to October 1975. The mailbox key set comes complete with a 5 pin mailbox lock, 1 cam, and 2 keys. These multi-cam assortments eliminate the need for individual locks. The mailbox key lock set is constructed of diecast, brass, steel, and stamped steel materials. It features a spring steel locking clip. The steel components come finished in a corrosion-resistant zinc-plated finish. The cylinder face comes in a zinc-plated finish. The lock is easy to install with only a few simple tools. Please refer to the line art drawing for dimensions and compare with your needs before purchasing.


Nice insoles though small a bit
Reviewed in the United States on June 25, 2024
Easy to install, suits normal mailboxes european type also. Needed to curb a bit the locking element. Works well.