21096684 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta O-ring used in D13 marine cooling-system pipe and service-kit assemblies. The seal is fitted at the designated coolant connection and is included in several D13C repair kits, making it a critical renewal item whenever the joint is opened.

🚤 Compatibility

• Engine Family: D

Full model list at the end of this description.

⚙️ Key Features

• Coolant-compatible elastomer seal for D13 marine engines
• Correct section and diameter for the original pipe/housing groove
• Included in applicable D13 cooling-system repair kits
• Resists coolant, pressure and repeated heat cycles
• One O-ring supplied; pipe, housing and clamp are separate
• Engine type: Volvo Penta D13 marine diesel

🔌 Function

Seals the coolant joint against pressure loss and air entry while allowing normal thermal expansion between the mating components.

⚠️ Common Signs of Failure

• Coolant seepage at the joint
• O-ring flattened, cut or hardened
• Cooling-system pressure loss
• Air entering the circuit and causing unstable temperature
• Repeated leakage caused by a dirty or damaged groove

🛠️ Service Notes

• Always fit a new O-ring — never refit one that has been removed, as it has already taken a set in its groove
• Clean the groove and both sealing faces and check them for nicks, scoring and corrosion pitting; a damaged groove will leak however good the new seal is
• Smear the ring with a little clean lubricant compatible with the fluid it seals, then roll it into place by hand so it sits untwisted and fully in its groove
• Never lever an O-ring over a sharp edge or thread with a screwdriver; use a blunt plastic tool and protect any edge the ring has to pass
• Assemble the joint squarely and tighten to the figure and sequence given in the workshop manual for your engine — over-tightening extrudes the ring and causes the very leak you were curing

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20443754 - Earlier Volvo Group cross-reference associated with the same seal size

OEM / Related Numbers

• Volvo 20443754

Other-Brand OEM Numbers

• VOE21096684

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-C MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C5-A MP, D13C2-A MG, D13C1-A MG
• Volvo Penta D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH