{"product_id":"cylinder-cap-fsm031-335154-335155-335148-for-johnson-evinrude-25-50-hp-1989-2003","title":"Cylinder Cap FSM031 335154 335155 335148 for Johnson Evinrude 25-50 hp 1989-2003","description":"\u003cstrong\u003eThis Cylinder Cap FSM031 is a replacement cylinder head cap compatible with Johnson Evinrude outboard motors (25-50 hp, 1989-2003) and matches OEM Part# 335154, 335155, 335148.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003eThe Cylinder Cap FSM031 is a critical component for Johnson Evinrude outboard engines, sealing the cylinder head to maintain compression and prevent leaks. Designed for 25-50 hp models from 1989 to 2003, this cylinder cap ensures reliable engine performance during marine use. It directly replaces OEM part numbers 335154, 335155, and 335148.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined to OEM specifications\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant construction for marine environments\u003c\/li\u003e\n\u003cli\u003eDirect replacement for multiple OEM part numbers\u003c\/li\u003e\n\u003cli\u003eEnsures proper cylinder compression\u003c\/li\u003e\n\u003cli\u003eEasy installation with basic tools\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003eJohnson Evinrude 25 hp (1989-2003)\u003c\/li\u003e\n\u003cli\u003eJohnson Evinrude 30 hp (1989-2003)\u003c\/li\u003e\n\u003cli\u003eJohnson Evinrude 40 hp (1989-2003)\u003c\/li\u003e\n\u003cli\u003eJohnson Evinrude 50 hp (1989-2003)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003eReplacement of worn or damaged cylinder caps\u003c\/li\u003e\n\u003cli\u003eOutboard engine rebuilds and repairs\u003c\/li\u003e\n\u003cli\u003eMaintenance of older two-stroke Johnson Evinrude engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e FSM031, 335154, 335155, 335148\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Cylinder Head Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e Two-stroke Outboard\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit my 1992 Johnson 40 hp outboard?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, this cylinder cap is compatible with Johnson Evinrude 25-50 hp models from 1989 to 2003, including the 1992 40 hp.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to replace the gasket when installing?\u003cstrong\u003e A:\u003c\/strong\u003e It is recommended to use a new gasket to ensure a proper seal and prevent leaks.\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":53678089306385,"sku":"ZZ2Z00815","price":55.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/12_08b3c3c6-5b24-42a3-8c5e-81e10fd328fa.jpg?v=1781614663","url":"https:\/\/www.duraforce.com\/products\/cylinder-cap-fsm031-335154-335155-335148-for-johnson-evinrude-25-50-hp-1989-2003","provider":"DURAFORCE","version":"1.0","type":"link"}