21301848 Piston Ring Kit | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta standard piston ring set for one 84mm-bore D2 piston. Four kits are required for a complete four-cylinder engine. This is the matching ring pack for piston kit 21301841.

🚤 Compatibility

• Engine Family: D, TMD, TAMD, MD
• HP Range: 55-75 HP
• Year Range: Approximately early 2000s onward

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta OEM piston ring kit
• Correct current part number 21301848
• Supersedes earlier ring-kit reference 3584123
• Standard 84mm-bore three-ring pack

📋 Kit Contents

• Top compression ring - supplied under kit number 21301848 - quantity 1; no separate Volvo service number published
• Second compression ring - supplied under kit number 21301848 - quantity 1; no separate Volvo service number published
• Oil-control ring - supplied under kit number 21301848 - quantity 1; no separate Volvo service number published

🔌 Function

The compression rings seal cylinder pressure and transfer heat, while the oil ring controls the lubricating film on the liner.

⚠️ Common Signs of Failure

• Excessive oil consumption
• Blue exhaust smoke
• Rings stuck in carboned grooves
• Incorrect oversize or standard ring set selected

🛠️ Service Notes

• Check the end gap of each ring in the bore it will run in and compare it with the figure in the workshop manual for your engine; a worn or rebored cylinder changes it
• Fit the rings the right way up — where a face is marked or the section is stepped, that face goes towards the piston crown, and an oil control ring's expander must be fitted without overlapping its own ends
• Use a ring expander rather than levering rings on with a screwdriver, and open them only as far as they need to go; cast rings snap and the groove edges nick easily
• Stagger the ring gaps round the piston as the manual for your engine directs, so that no two gaps line up
• Oil the rings, bore and compressor lightly, enter the bore with a ring compressor, and never force the piston in — if it resists, back it out and find out why

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21301848 → Supersedes 3584123

OEM / Related Numbers

• 3584123 earlier number superseded by this part
• 21301841 related piston kit

Other-Brand OEM Numbers

• Kolbenschmidt: 800108110000

Aftermarket / Verified Equivalents

• Recmar: REC21301848
• Specialist replacement: 3584123

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 2003, 2003TB, 2003TB SOLAS, 2001AG, 2001B, 2001BG, 2003T, 2002AG, 2002B, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002
• Volvo Penta D2-55, D2-55B, D2-55C, D2-55D, D2-55E, D2-75, D2-75B, D2-75C, D2-75F, D2-60F
• Volvo Penta MD22A, MD22L
• Volvo Penta TMD22A, TMD22B
• Volvo Penta D2003AG
• Volvo Penta TAMD22P-B