{"product_id":"volvo-438","title":"Volvo Penta D3 STD Piston Ring Kit 30731740","description":"\u003cp\u003eVolvo Penta 30731740 is a genuine OEM piston ring kit used in select Volvo Penta D3 marine diesel engine applications. Current dealer and parts-catalog references consistently identify it as an active Volvo Penta piston ring kit, and the strongest schematic support places it directly in the D3-110I-A engine parts diagram as the piston ring kit associated with the crankshaft, connecting rod, and piston assembly. Aftermarket cross-reference listings also describe this part as the \u003cstrong\u003estandard-size (STD)\u003c\/strong\u003e ring kit for early D3 applications up to serial number \u003cstrong\u003e2003004563\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Volvo Penta OEM part number \u003cstrong\u003e30731740\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eIdentified in Volvo Penta D3 engine schematic references as \u003cstrong\u003ePiston Ring Kit\u003c\/strong\u003e, object key \u003cstrong\u003e31\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommonly cross-referenced as the \u003cstrong\u003eSTD\u003c\/strong\u003e piston ring kit for early Volvo Penta D3 diesel engines.\u003c\/li\u003e\n\u003cli\u003eCurrent cross-reference listings associate it with D3 serial range \u003cstrong\u003eup to and including 2003004563\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDealer weight reference lists it at approximately \u003cstrong\u003e0.054 kg\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe strongest supportable fitment for 30731740 is within early Volvo Penta \u003cstrong\u003eD3\u003c\/strong\u003e marine diesel applications. Current cross-reference listings consistently associate it with \u003cstrong\u003eD3-110I-A, D3-110I-B, D3-110I-C, D3-130A-A, D3-130I-A, D3-130A-B, D3-130I-B, D3-130A-C, D3-130I-C, D3-160A-A, D3-160I-A, D3-160A-B, D3-160I-B, D3-160A-C, D3-160I-C, D3-190A-B, D3-190I-B, D3-190A-C, and D3-190I-C\u003c\/strong\u003e, with serial coverage shown as \u003cstrong\u003eup to and including 2003004563\u003c\/strong\u003e. Because piston and ring specifications can vary by serial break and size group, final fitment should always be confirmed against the exact Volvo Penta engine diagram and serial number.\u003c\/p\u003e\n\u003ch2\u003eSerial Number Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eMatch Volvo Penta part number \u003cstrong\u003e30731740\u003c\/strong\u003e to your engine serial number before ordering. The strongest current references point to early D3 engines up to serial number \u003cstrong\u003e2003004563\u003c\/strong\u003e, so serial verification matters here more than it does with many general service parts.\u003c\/p\u003e\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cp\u003eA piston ring kit is typically replaced during engine rebuild work, piston service, or whenever compression loss, oil consumption, blow-by, or cylinder-related wear points to worn rings. On a D3 engine, this is not usually a casual maintenance item, but rather a component replaced during deeper internal engine service. This service guidance is an inference supported by the part's location in the piston and crankshaft assembly schematic.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eConfirm the exact engine serial range and ring size requirement before ordering, especially when working on an engine that may have had prior internal machining or piston replacement. Because current cross-reference listings describe 30731740 as a \u003cstrong\u003estandard-size\u003c\/strong\u003e ring kit, it is important to verify that the engine still requires STD rings before installation.\u003c\/p\u003e\n\u003ch2\u003eAlternate\/Superseded Part Numbers\u003c\/h2\u003e\n\u003cp\u003eThe reviewed sources continue to list \u003cstrong\u003e30731740\u003c\/strong\u003e as the active Volvo Penta OEM number. Current aftermarket cross-reference listings also associate it with \u003cstrong\u003eRM30731740\u003c\/strong\u003e as a compatible reference number, but that is an aftermarket cross-reference rather than a Volvo Penta supersession.\u003c\/p\u003e\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eWith piston ring kits, the easy mistake is matching only by engine family and skipping the serial break or ring size. On early Volvo Penta D3 engines, checking both the serial number and whether the engine is still on standard bore usually saves a lot of hassle before teardown turns into parts delay.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43563997528100,"sku":"30731740","price":207.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/cbd3e090-29b7-4d4b-8a3b-1b1f5819138b.png?v=1776471189","url":"https:\/\/marisolmarine.com\/products\/volvo-438","provider":"Marisol Marine Company","version":"1.0","type":"link"}