{"product_id":"857005a1-mercury-mercruiser-21857005a1-diaphragm-kit-fuel-pump-genuine-quicksilver-oem-part","title":"857005A1 Mercury MerCruiser 21857005A1 Diaphragm Kit Fuel Pump | Genuine Quicksilver OEM Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine Quicksilver Fuel Pump Diaphragm Kit - Part Number: 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver fuel pump diaphragm kit for selected Mercury and Mariner 2-stroke outboards. This kit services the diaphragm-style fuel pump used to draw fuel from the tank and deliver it to the carburettor or fuel system at the correct pressure.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver OEM fuel pump diaphragm kit\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • Replaces earlier 21-42990A10 diaphragm kit reference\n\u003c\/p\u003e\n\u003cp\u003e\n • Used across selected 30 Jet through 225HP Mercury \/ Mariner outboards\n\u003c\/p\u003e\n\u003cp\u003e\n • Helps restore fuel pump pressure and reliable fuel delivery\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 21-857005A1 → Supersedes 21-42990A10\n\u003c\/p\u003e\n\u003cp\u003e\n • 42990A11 related earlier diaphragm reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 42990A10 earlier OEM reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 21857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 21-42990A10\n\u003c\/p\u003e\n\u003cp\u003e\n • 42990A10\n\u003c\/p\u003e\n\u003cp\u003e\n • 42990A11\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Recmar: REC21-42990A10\n\u003c\/p\u003e\n\u003cp\u003e\n • No additional aftermarket equivalent\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ Mariner diaphragm fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 30 Jet applications using diaphragm kit 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 45 Jet - serial 0D000750 to 0G290584\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 65 Jet applications using diaphragm kit 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 105 Jet applications using diaphragm kit 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140 Jet applications using diaphragm kit 21-857005A1\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 30HP 2-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 40HP 2-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 40HP 3-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 40HP 4-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 50HP 3-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 55HP 3-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 60HP 3-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 75HP 3-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 90HP 3-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 100HP 4-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115HP 4-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 125HP 4-cylinder fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-135 fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-6 fuel pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200 DFI applications where 21-857005A1 is specified\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 3.0L carbureted \/ EFI \/ SeaPro applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: 30 Jet through 225HP where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury \/ Mariner 2-stroke outboard\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Diaphragm fuel pump repair kit\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The diaphragm kit renews the flexible fuel pump diaphragm and related components so the pump can draw and deliver fuel correctly.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Hard starting\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine stalls or hesitates under load\n\u003c\/p\u003e\n\u003cp\u003e\n • Fuel starvation at higher RPM\n\u003c\/p\u003e\n\u003cp\u003e\n • Fuel leaking from the pump body\n\u003c\/p\u003e\n\u003cp\u003e\n • Cracked, stiff or torn diaphragm during service\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver part\n\u003c\/p\u003e\n\u003cp\u003e\n • Brand new\n\u003c\/p\u003e\n\u003cp\u003e\n • Supplied in original or equivalent packaging\n\u003c\/p\u003e\n","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":53388146016548,"sku":"21-857005A 1","price":36.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_afe6ee55-3332-491b-a8c8-e7690cb0f7c2.jpg?v=1777212087","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/857005a1-mercury-mercruiser-21857005a1-diaphragm-kit-fuel-pump-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}