{"product_id":"125018-o-ring-genuine-volvo-penta","title":"125018 O-Ring | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n This is a genuine Volvo Penta O-ring seal in the 29.7 x 3.53 mm size, supplied as the late-design version of the seal for this location. It provides a static sealing joint between mating components on a broad group of classic Volvo Penta petrol and diesel marine engines and their drive assemblies. Because O-rings of the same generic name differ only by section and diameter, confirm the 29.7 x 3.53 mm dimension before ordering.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  AQ, MD, TMD, AD, AQAD, BB, TAMD, MS, B, AQD, MB\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Year Range:\n  \u003c\/strong\u003e\n  Approximately 1970s-1980s\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n Full model list at the end of this description.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  OEM Volvo Penta part number 125018\n \u003c\/li\u003e\n \u003cli\u003e\n  Dimension: 29.7 x 3.53 mm\n \u003c\/li\u003e\n \u003cli\u003e\n  Late-design (later production) version of the seal\n \u003c\/li\u003e\n \u003cli\u003e\n  Fits classic Volvo Penta AQ, MD, TMD, TAMD, AD, BB, MB and MS series marine petrol and diesel engines\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied as a single O-ring\n \u003c\/li\u003e\n \u003cli\u003e\n  System type: Internal clutch, shaft or gear-housing oil seal\n \u003c\/li\u003e\n \u003cli\u003e\n  8 used per assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The O-ring forms a compressed static seal between two mating surfaces or around a shaft or fitting, preventing oil, coolant, fuel or water from escaping the joint. Correct section thickness and inside diameter are essential for the seal to seat and hold pressure.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Weeping or dripping fluid at the joint the O-ring seals\n \u003c\/li\u003e\n \u003cli\u003e\n  Hardened, cracked or flattened rubber that has lost its round cross-section\n \u003c\/li\u003e\n \u003cli\u003e\n  Swollen or softened material from fluid or heat degradation\n \u003c\/li\u003e\n \u003cli\u003e\n  Loss of system pressure or air being drawn into the joint\n \u003c\/li\u003e\n \u003cli\u003e\n  Visible nicks, cuts or extrusion of the ring from its groove during disassembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Always fit a new O-ring — never refit one that has been removed, as it has already taken a set in its groove\n \u003c\/li\u003e\n \u003cli\u003e\n  Clean the groove and both sealing faces and check them for nicks, scoring and corrosion pitting; a damaged groove will leak however good the new seal is\n \u003c\/li\u003e\n \u003cli\u003e\n  Smear the ring with a little clean lubricant compatible with the fluid it seals, then roll it into place by hand so it sits untwisted and fully in its groove\n \u003c\/li\u003e\n \u003cli\u003e\n  Never lever an O-ring over a sharp edge or thread with a screwdriver; use a blunt plastic tool and protect any edge the ring has to pass\n \u003c\/li\u003e\n \u003cli\u003e\n  Assemble the joint squarely and tighten to the figure and sequence given in the workshop manual for your engine — over-tightening extrudes the ring and causes the very leak you were curing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  875628 earlier MS3 gasket kit\n \u003c\/li\u003e\n \u003cli\u003e\n  876400 later MS3 gasket kit\n \u003c\/li\u003e\n \u003cli\u003e\n  850413 MS3 reverse gear, ratio 1.91:1\n \u003c\/li\u003e\n \u003cli\u003e\n  850417 related slip clutch\n \u003c\/li\u003e\n \u003cli\u003e\n  852072 related slip clutch\n \u003c\/li\u003e\n \u003cli\u003e\n  925256 companion O-rings\n \u003c\/li\u003e\n \u003cli\u003e\n  925069 companion O-rings\n \u003c\/li\u003e\n \u003cli\u003e\n  942353 companion O-rings\n \u003c\/li\u003e\n \u003cli\u003e\n  958879 related sealing ring\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔎 Full Model Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ170B, AQ170C, AQ170A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta BB115A, BB115B, BB115C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta BB170B, BB170C, BB170A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta BB260AV, BB260B, BB260C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta MB20A, MB20B, MB20C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TMD40A, TMD40B, TMD40C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ115A, AQ115B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ260A, AQ260B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQAD40B, AQAD40A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQD21A, AQD21B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta MD21B, MD21A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta MS3B, MS3C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta 100S, 110S\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAMD40A, TAMD40B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AD40B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ120B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ125A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ140A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQ165A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta AQD40A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta B20\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta BB140A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta BB145A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta BB165A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta MD30A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta MD40A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAMD30A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TMD30A\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53380956061988,"sku":"9089753","price":48.19,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_0014fcb3-ec03-42f9-b667-2955c6eaad89.png?v=1788053560","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/125018-o-ring-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}