21179959 Piston Ring Kit | Genuine Volvo Penta Part

🔧 Product Description

A standard-size piston-ring engine set for Vortec-generation GM 4.3-litre V6 marine engines. The package supplies compression and oil-control rings for all six pistons. Cross-references also list selected 5.7-litre GM marine applications, but an eight-cylinder engine requires the correct V8 package quantity and must not be assumed from the V6 kit count.

🚤 Compatibility

• Engine Family: V
• HP Range: 200-320 HP
• Year Range: Approximately 1996 onward

Full model list at the end of this description.

⚙️ Key Features

• Standard-bore piston-ring engine set
• Complete six-cylinder quantity for GM 4.3L V6
• Used on Vortec-generation engines from approximately 1996 onward
• Cylinder bore and ring-groove dimensions must be measured before installation
• Engine type: GM 4.3-litre / 262 CID V6 Vortec marine petrol engine
• Quantity varies by assembly, most commonly six

📋 Kit Contents

• 6 x top compression rings - kit-only components
• 6 x second compression rings - kit-only components
• 6 x oil-control ring assemblies - kit-only components
• Complete package services one six-cylinder 4.3L engine
• Individual rings are not assigned separate Volvo Penta service numbers within kit 21179959

🔌 Function

Seals combustion pressure above each piston, controls lubricating oil on the cylinder walls and transfers piston heat into the cylinder bores.

⚠️ Common Signs of Failure

• Low compression or excessive crankcase blow-by
• Blue smoke and high engine-oil consumption
• Oil-fouled spark plugs
• Reduced power or poor cylinder balance
• Rings are broken, seized in their grooves or worn beyond specification

🛠️ 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

• 21179959 → Supersedes 3855740

OEM / Related Numbers

• 3855740 earlier number superseded by this part

Other-Brand OEM Numbers

• 3855740 earlier Volvo Penta / OMC reference
• MerCruiser / Quicksilver: 801861T1
• MerCruiser / Quicksilver: 801611

Aftermarket / Verified Equivalents

• Marine Power: MP0009-356
• RECMAR: REC11004

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 5.7GXi-320-R, 5.7GXiE-320-R, 5.7GXiC-320-R, 5.7GXiCE-320-R, 5.7GXiC-J, 5.7GXiC-JF, 5.7GXiCE-JF, 5.7GXiCE-J, 5.7GXiCE-M, 5.7GXiC-P, 5.7GXiCE-P, 5.7GXi-D, 5.7GXi-DF, 5.7GXi-E, 5.7GXi-EF, 5.7GXi-J, 5.7GXi-JF, 5.7GXiE-JF, 5.7GXiE-J, 5.7GXiE-M, 5.7GXiE-MF, 5.7GXiE-P, 5.7GXi-P, 5.7GXi-F, 5.7GXi-FF, 5.7OSXi-D, 5.7OSXi-DF, 5.7GXi-H, 5.7GXi-HF, 5.7OSi-300-J, 5.7OSi-300-JF, 5.7OSiE-300-JF, 5.7OSiE-300-J, 5.7OSi-B, 5.7OSi-BF, 5.7OSi-C, 5.7OSi-CF, 5.7OSi-E, 5.7OSi-EF, 5.7OSi-G, 5.7OSi-GF, 5.7OSXi-B, 5.7OSXi-BF, 5.7OSXi-C, 5.7OSXi-CF, 5.7OSXi-J, 5.7OSXi-JF, 5.7OSXiE-JF, 5.7OSXiE-J, 5.7OSXi-G, 5.7OSXi-GF, 5.7Gi-300-J, 5.7Gi-300-JF, 5.7GiE-300-JF, 5.7GiE-300-J, 5.7GiCE-300-M, 5.7GiE-300-N, 5.7Gi-300-N, 5.7GiCE-300-MF, 5.7GiE-300-P, 5.7Gi-300-P, 5.7Gi-300-R, 5.7GiE-300-R, 5.7Gi-C, 5.7Gi-CF, 5.7GiC-300-J, 5.7GiCE-300-J, 5.7GiCE-300-JF, 5.7GiC-300-JF, 5.7GiC-300-P, 5.7Gi-D, 5.7Gi-DF, 5.7Gi-E, 5.7Gi-EF, 5.7GXiE-N, 5.7GXi-N, 5.7GiE-300-K, 5.7GiE-300-KF, 5.7GiE-300-M, 5.7OSi-D, 5.7OSi-DF, 5.7Gi-F, 5.7Gi-FF, 5.7Gi-G, 5.7Gi-GF, 5.7GL-A, 5.7GL-B, 5.7GL-C, 5.7GL-D, 5.7GL-E, 5.7GiCE-300-P, 5.7GiC-300-R, 5.7GiCE-300-R, 4.3OSi-GF, 4.3OSi-J, 4.3OSi-JF, 4.3Gi-200-R, 4.3GL-E, 4.3GL-EF, 4.3GL-G, 4.3GL-GF, 4.3GL-J, 4.3GL-JF, 4.3GL-P, 4.3GXi-225-R, 4.3GXiE-225-R, 4.3GXiE-M, 4.3GXi-P, 4.3GXiE-P, 4.3GXi-Q, 4.3GXiE-Q, 4.3GXi-F, 4.3GXi-FF, 4.3GXi-G, 4.3GXi-GF, 4.3GXi-J, 4.3GXi-JF, 4.3OSi-F, 4.3OSi-FF, 4.3OSi-G
• Volvo Penta V8-300-A, V8-300-E-A, V8-300-B, V8-300-E-B, V8-300-C-A, V8-300-CE-A, V8-300-C-B, V8-320-C-B, V8-320-CE-B, V8-300-CE-B, V8-320-A, V8-320-E-A, V8-320-B, V8-320-E-B, V8-320-C-A, V8-320-CE-A, V8-225-C-A, V8-225-CE-A, V8-225-C-B, V8-225-CE-B
• Volvo Penta V6-200-A, V6-225-A, V6-225-E-A