Master Lock 387 Trailer King Pin Lock

The Master Lock No. 387 High Security King Pin Lock secures the king pin of semi-trailers, RVs and other fifth wheel trailers to prevent theft and deter break-in's. Including an integrated padlock (No. 5), this locking device renders bolt cutters useless and the high-grade aluminum is lightweight while providing high security.

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Master Lock Semi-Trailer Lock For Use with Trailer King Pins 387 - 32948531

King Pin Lock Installation

Master Lock Keyed Alike King Pin Locks - Toy Hauler/Trailer Locks w/BumpStop Technology - 387NKA-4 : Automotive

Master Lock: The Rest Of The Story

Secures the king pin of semi-trailers, RV's, and other fifth wheel trailers. Solid, cast aluminum alloy withstands physical attacks. Featuring the

Master Lock Key Lock - Red, 387NKA, 1-Pack

1166] Novice-Level Security: Master Lock No. 387 Kingpin Lock

Trailer Coupler Locks at

387 TRAILER COUPLER LOCK King Pin Lock Semi-Trailers RV and Fifth Wheel Trailer

R201319 Meritor_NA

Universal Trailer Coupler Lock (378DAT) by Master Lock. Fit to 2-5/16 (59mm) trailer coupler. The Master Lock No. 378DAT features a 2-5/16in (59mm) trailer coupler lock, designed to resist rust and corrosion. Fit to 2-5/16 trailer coupler. The Master Lock No. 378DAT features a 2-5/16 trailer coupler lock, designed to resist rust and corrosion. The advanced locking mechanism provides resistance to picking and prying.

Master Lock 378DAT Trailer Coupler Lock