21230282 Lock Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Piston-Pin Lock Ring - Part Number: 21230282

A hardened retaining ring installed at each end of the piston pin on selected Volvo Penta D5, D8 and TAD engines. Two rings are normally required per piston to prevent lateral movement of the pin.

⚙️ Key Features

• Genuine Volvo Penta component

• Two normally required per piston

• Hardened spring-steel construction

• Replace whenever removed during engine overhaul

• Direct replacement where part number 21230282 is specified

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21230282 (current catalogued reference)

OEM / Related Numbers:

• 22960905 - D8 piston pin

• 22203232 - D5 or TAD piston pin

• 22720412 and 22222394 - piston-ring kits

• 23228685 and 23228687 - cylinder-liner kits

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta industrial and marine diesel piston assemblies

Typically suits:

• Engine models:

• D8A1-A through D8A6-A MH and MG derivatives

• TAD570VE-B

• TAD571VE-B

• TAD580VE

• TAD581VE

• TAD582VE

• TAD583VE

• TAD841GE

• TAD842GE

• TAD843GE

• HP Range: Engine-rating dependent

• Engine Type: Four- or six-cylinder turbocharged diesel

• Year Range: Piston- and serial-number dependent

🔌 Function

Retains the piston pin within the piston and prevents the pin from contacting the cylinder liner.

Common signs of failure:

• Scoring along the cylinder liner

• Piston-pin movement or knocking

• Broken ring fragments in the sump

• Damaged piston retaining groove

• Severe piston and liner damage

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging