{"product_id":"marine-tech-tools-38mm-pin-spanner-wrench-amt0304","title":"M Marine Tech Tools 38mm Pin Spanner Wrench for Yamaha \u0026 SeaStar — 1\/2\" Drive, Stainless, 6 Spare L‑4 Pins","description":"\u003cp\u003e\u003cstrong\u003eThe M Marine Tech Tools 38mm Pin Spanner Wrench (AMT0304) is a stainless‑steel, 1\/2\" drive pin spanner built to lock in under load and deliver reliable 200 ft‑lb minimum yield for Yamaha and SeaStar steering and tilt caps.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis precision tool is designed specifically for marine applications: it fits SeaStar HS5157 steering gland rebuilds, Yamaha V6 four‑stroke center tilt caps, Non‑VMAX Yamaha 2‑strokes 225 hp and up, and Yamaha F150 tilt caps from 2011 onward. The kit includes the wrench body plus six spare L‑4mm pins and replaces OEM tools such as Yamaha YB‑06548 and SeaStar HS5157. Constructed from polished marine‑grade stainless steel and heat treated for strength, the AMT0304 is paced to withstand harsh saltwater environments while giving pro mechanics and weekend boaters repeatable, slip‑free performance.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this spanner hold under high torque?\u003c\/h3\u003e\n\u003cp\u003eThe AMT0304 uses a sleeve‑and‑receiver locking geometry so the outboard’s weight helps seat the tool and prevents kick‑out when you apply heavy torque. With a 1\/2\" square drive it accepts breaker bars, torque wrenches, and impact drivers, allowing you to use full breaker bar leverage without the pins shearing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated to a minimum 200 ft‑lb yield via proprietary material and heat treatment\u003c\/li\u003e\n  \u003cli\u003eRequires the AMT0170 sleeve (sold separately) for locking-in under load\u003c\/li\u003e\n  \u003cli\u003e1\/2\" drive works with standard torque tools and impacts\u003c\/li\u003e\n  \u003cli\u003ePolished stainless body resists corrosion and wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and parts does it fit?\u003c\/h3\u003e\n\u003cp\u003eAMT0304 was engineered to match common Yamaha and SeaStar service points so you don’t need adapters or jury‑rigged setups. It fits multiple Yamaha tilt caps and specific SeaStar steering gland configurations used in rebuilds and maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeaStar HS5157 steering cylinder rebuilds\u003c\/li\u003e\n  \u003cli\u003eYamaha V6 four‑stroke center tilt caps and Non‑VMAX 2‑strokes 225 hp+\u003c\/li\u003e\n  \u003cli\u003eYamaha F150 tilt caps (model year 2011 and newer)\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for Yamaha YB‑06548 and SeaStar HS5157 tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance supplies and spares are included or recommended?\u003c\/h3\u003e\n\u003cp\u003eThe wrench comes with six spare L‑4mm pins so you have replacements on hand for routine shop use. Replacement pins (AMT0050) and the locking AMT0170 sleeve are sold separately, allowing you to restock consumables or upgrade the locking system when needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes wrench body plus six spare L‑4mm pins\u003c\/li\u003e\n  \u003cli\u003eOrder AMT0050 replacement L‑4 pins when spares run low\u003c\/li\u003e\n  \u003cli\u003ePurchase AMT0170 sleeve to enable the lock‑in receiver system\u003c\/li\u003e\n  \u003cli\u003ePolished finish eases cleaning and reduces salt buildup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The AMT0304 is for marine professionals and committed boat owners who service Yamaha outboards and SeaStar steering systems and need a durable, accurate wrench that tolerates heavy use. If you perform steering gland rebuilds, center‑tilt cap servicing, or any job requiring consistent pin engagement and high torque capability, this tool reduces downtime and the risk of stripping caps or kicking out under load. Backed by a Charleston, SC small‑business lifetime warranty, it’s also a good choice for shops that want a long‑lasting, serviceable tool that keeps vessels on the water rather than in the yard.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the AMT0304 include spare pins?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit ships with six spare L‑4mm pins; replacement AMT0050 pins are also available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need anything else to lock the tool under load?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You’ll need the AMT0170 sleeve (sold separately) to engage the sleeve‑and‑receiver lock system.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"M Marine Tech Tools","offers":[{"title":"Default Title","offer_id":48030583095457,"sku":"B017KT4F4A","price":157.12,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/marine-tech-tools-amt0304-front-view.jpg?v=1791406853","url":"https:\/\/canadiansporting.ca\/products\/marine-tech-tools-38mm-pin-spanner-wrench-amt0304","provider":"Canadian Sporting","version":"1.0","type":"link"}