{"product_id":"30-72961-mercury-mercruiser-bearing-t12505-genuine-quicksilver-oem-part","title":"30-72961 Mercury MerCruiser Bearing T12505 | 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 Ball Bearing - Part Number: 30-72961\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver ball bearing used in selected Mercury outboard crankcase applications and MerCruiser belt-driven sea water pump assemblies. This bearing supports the rotating shaft inside the specified pump or crankcase assembly, helping maintain smooth rotation and correct load support.\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 ball bearing\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 30-72961\n\u003c\/p\u003e\n\u003cp\u003e\n • Replacement for selected Mercury and MerCruiser water pump \/ crankcase bearing locations\n\u003c\/p\u003e\n\u003cp\u003e\n • Cross-references with Sierra 18-1398\n\u003c\/p\u003e\n\u003cp\u003e\n • Also associated with earlier Mercury 30-20861 bearing reference\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 • 30-72961 → Supersedes 30-20861\n\u003c\/p\u003e\n\u003cp\u003e\n • 30-20861 earlier OEM ball bearing 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 • 30-72961\n\u003c\/p\u003e\n\u003cp\u003e\n • 72961\n\u003c\/p\u003e\n\u003cp\u003e\n • T12505 bearing reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 30-20861\n\u003c\/p\u003e\n\u003cp\u003e\n • 20861\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 • Sierra: 18-1398\n\u003c\/p\u003e\n\u003cp\u003e\n • GLM: 21625\n\u003c\/p\u003e\n\u003cp\u003e\n • Mallory: 9-43220\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 3.5HP to 9.8HP outboard crankcase \/ bearing applications\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser belt-driven sea water pump shaft bearing 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 \/ pump models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 7.5HP outboard - serial 5206550 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 7.5HP outboard - serial 7125388 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 7.5HP outboard - serial 8057545 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 7.5HP outboard - serial 9217756 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 9.8HP outboard - serial 5206550 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 9.8HP outboard - serial 7127388 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 9.8HP outboard - serial 8057545 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 9.8HP outboard - serial 9217756 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury Merc 7.5J - serial 85A1101 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ MerCruiser 3.5HP to 9.8HP small outboard bearing applications where 30-72961 is specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 470 2BBL Mercury 224 I\/L4 - 1980-1982, serial 5520115 to 6218036\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 470 MIE Mercury 224 I\/L4 - 1980-1981, serial 5520115 to 6218036\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 280 TRS GM 350 V8 - 1975-1976, serial 4176250 to 4770199\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser belt-driven sea water pump assemblies using bearing 30-72961\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser sea water pump shaft bearing applications using Sierra 18-1398 equivalent\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury small outboard and MerCruiser petrol sterndrive \/ inboard water pump applications\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Ball bearing \/ crankcase or belt-driven sea water pump bearing\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 bearing supports shaft rotation inside the pump or crankcase assembly, reducing friction and keeping rotating parts aligned under load.\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 • Growling or grinding from pump assembly\n\u003c\/p\u003e\n\u003cp\u003e\n • Excessive shaft play\n\u003c\/p\u003e\n\u003cp\u003e\n • Water pump leakage due to shaft movement\n\u003c\/p\u003e\n\u003cp\u003e\n • Bearing roughness during pump rebuild\n\u003c\/p\u003e\n\u003cp\u003e\n • Corrosion or seizure after water intrusion\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":"NTN","offers":[{"title":"Default Title","offer_id":53388120260900,"sku":"116741S","price":20.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_b9444ab0-6e8f-49b2-a79d-42e142083182.jpg?v=1777211253","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/30-72961-mercury-mercruiser-bearing-t12505-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}