{"product_id":"74040-marine-propeller-lock-set-for-yamaha-honda-suzuki-m18-x-1-5-thread-size","title":"74040 Marine Propeller Lock Set for Yamaha Honda Suzuki M18 x 1.5 Thread Size","description":"\u003cstrong\u003eThis Marine Propeller Lock Set is a propeller nut locking system compatible with Yamaha, Honda, and Suzuki outboard motors and matches OEM Part# 74040.\u003c\/strong\u003e \u003ch2\u003eProduct Overview\u003c\/h2\u003e The 74040 Marine Propeller Lock Set secures the propeller and nut against loosening and theft on marine outboard engines. Engineered for Yamaha, Honda, and Suzuki lower units, this locking set uses a matched locking tab and retainer to maintain proper torque. The 74040 Marine Propeller Lock Set provides peace of mind for boaters who want reliable propeller retention. \u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eThreaded M18 x 1.5 design matches common propeller shaft dimensions on Yamaha, Honda, and Suzuki outboards\u003c\/li\u003e \u003cli\u003eIncludes locking tab, retainer nut, and necessary hardware to create a positive mechanical lock\u003c\/li\u003e \u003cli\u003eCorrosion-resistant construction withstands saltwater and freshwater marine environments\u003c\/li\u003e \u003cli\u003eSimple installation requiring basic hand tools — no drilling or shaft modification needed\u003c\/li\u003e \u003cli\u003ePrevents propeller nut from backing off under torque, vibration, and reversing thrust\u003c\/li\u003e \u003cli\u003eDeters propeller theft by requiring a specific key or tool for removal (check kit contents)\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eYamaha outboard motors with M18 x 1.5 thread propeller shaft\u003c\/li\u003e \u003cli\u003eHonda outboard motors with M18 x 1.5 thread propeller shaft\u003c\/li\u003e \u003cli\u003eSuzuki outboard motors with M18 x 1.5 thread propeller shaft\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eCommon Uses\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSecuring propellers on bass boats, runabouts, and offshore fishing rigs\u003c\/li\u003e \u003cli\u003eReplacing missing or damaged locking hardware during propeller changes\u003c\/li\u003e \u003cli\u003eInstalling on high-torque outboards where prop slippage is a concern\u003c\/li\u003e \u003cli\u003eAdding theft deterrence when the boat is moored or trailered unattended\u003c\/li\u003e \u003cli\u003eRoutine maintenance item during annual lower unit service\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 74040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M18 x 1.5\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this set require a special tool for installation? \u003cstrong\u003eA:\u003c\/strong\u003e Installation typically uses the standard propeller wrench and socket; some kits may include a security key for the locking nut, so check included hardware.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this lock fit a Yamaha F150 4-stroke outboard? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, if the propeller shaft has M18 x 1.5 threads. Always verify your specific model year shaft thread size, as some engines may vary.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53679666430225,"sku":"ZZ3A00750","price":94.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_2b712922-30e2-41d8-8172-2377b342d9cb.jpg?v=1781652270","url":"https:\/\/www.duraforce.com\/products\/74040-marine-propeller-lock-set-for-yamaha-honda-suzuki-m18-x-1-5-thread-size","provider":"DURAFORCE","version":"1.0","type":"link"}