McGard

Innovative Security Products

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Theft Protection During Use, Storage and Transit.   

TMB TestedProtect yourself against expensive propeller theft with a McGard propeller lock, featuring the same patented design as our stern drive and outboard motor locks. A free-spinning collar will turn if attacked by gripping tools without loosening the lock. Constructed of naval brass and hardened stainless steel, once installed our propeller lock offers maximum security for 24 hour protection.

» Watch Installation Video

Propeller Locks for Stern Drives  
Photo Stern Drive Fitments Thread Size Part No. Details
  • MerCruiser® Alpha I, Bravo I (Incl. X & XR), TRS, Vazer, OMC Cobra and King Cobra 
 3/4"-16 74039 View
  • All Yamaha
 M18x1.5 74040 View
  • MerCruiser® Bravo III (up to 2003), Blackhawk
 1"-14 74053 View
  • Volvo DP-S (Duo-Prop)
 M22 x 2.0 74057 View
  • MerCruiser® III SSM, IV SSM, V SSM, VI SSM, NXT
 1"-14 74058 View
 
Propeller Locks for Outboard Motors 
Photo Outboard Motor Fitments  Thread Size Part No. Details
  • Mercury/Mariner 70 HP and larger (ex.225 HP 4 stroke before 2005)
  • Mercury Bigfoot 40 HP, 50 HP, 60 HP (4 stroke)
  • Optimax 75 HP and larger
  • Verado 135 HP and larger
  • Johnson/Evinrude 150 HP and larger (2 stroke) (ex. 2014 & up Evinrude E-Tec G2 200HP-300HP motors due to anode cone)
 3/4"-16 74039 View
  • Honda 75 HP and larger
  • Suzuki 40 HP and larger
  • Yamaha 115 HP and larger
  • Johnson/Evinrude 150 HP and larger (4 stroke) 
    (ex. 2014 & up Evinrude E-Tec G2 200HP-300HP motors due to anode cone)
 M18x1.5 74040 View
  • Johnson/Evinrude 40-140 HP (2 stroke) (Some 90 HP & 130 HP may have a 3/4-16 shaft) 
 5/8"-11 74052 View
  • Nissan 40 HP and larger
  • Tohatsu 40 HP and larger
  • Honda 40-50 HP
 M16 x 1.5 74056 View
 

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