Volvo Penta D3 STD Piston Ring Kit 30731740
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Volvo 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 standard-size (STD) ring kit for early D3 applications up to serial number 2003004563.
Key Features
- Genuine Volvo Penta OEM part number 30731740.
- Identified in Volvo Penta D3 engine schematic references as Piston Ring Kit, object key 31.
- Commonly cross-referenced as the STD piston ring kit for early Volvo Penta D3 diesel engines.
- Current cross-reference listings associate it with D3 serial range up to and including 2003004563.
- Dealer weight reference lists it at approximately 0.054 kg.
Engine Compatibility
The strongest supportable fitment for 30731740 is within early Volvo Penta D3 marine diesel applications. Current cross-reference listings consistently associate it with D3-110I-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, with serial coverage shown as up to and including 2003004563. 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.
Serial Number Fitment Notice
Match Volvo Penta part number 30731740 to your engine serial number before ordering. The strongest current references point to early D3 engines up to serial number 2003004563, so serial verification matters here more than it does with many general service parts.
When This Part Needs Replacement
A 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.
Installation Notes
Confirm 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 standard-size ring kit, it is important to verify that the engine still requires STD rings before installation.
Alternate/Superseded Part Numbers
The reviewed sources continue to list 30731740 as the active Volvo Penta OEM number. Current aftermarket cross-reference listings also associate it with RM30731740 as a compatible reference number, but that is an aftermarket cross-reference rather than a Volvo Penta supersession.
Parts Desk Insight
With 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.
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Shipping information
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Returns & warranty
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