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Lower Unit Lock

Theft Protection In and Out of the Water
McGard outboard lower unit lock bolt is designed specifically for Yamaha lower units and features a stainless steel locking bolt. Simply replace one of the Original Equipment bolts above the propeller with a McGard locking bolt. Once installed our lower unit lock bolt offers 24 hour protection. Constructed of through-hardened stainless steel for maximum security.
A free-spinning collar will turn if attacked by gripping tools without loosening the lock to avoid costly theft. For maximum security, use the Yamaha lower unit lock bolt in conjunction with a McGard outboard motor lock.

YAMAHA LOWER UNIT
Application   
ThreadPart Number

Yamaha F115-F350
L & X* Shaft Engines


*Except F150TXR

Fits most Yamaha
V4 & V6 2 strokes

M10x1.2574059