955978 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta o-ring weighing 0.014 kg and listed for 49 applications across the MD, TMD, AQD, TAMD and THAMD families. It carries no build note and no supersession history, so confirm the ring against its groove and order by number.

🚤 Compatibility

• Engine Family: MD, TMD, AQD, TAMD, THAMD

Full model list at the end of this description.

⚙️ Key Features

• 0.014 kg
• 49 applications listed
• Covers MD, TMD, AQD, TAMD and THAMD engines
• Order by part number

🔌 Function

Seals the joint between two faces, squeezed into its groove to hold pressure and keep fluid where it belongs.

⚠️ Common Signs of Failure

• Weeping or seeping at the sealed joint
• Ring hardened, flattened or gone shiny
• Nicks or a nibbled edge from assembly damage
• Swelling from the wrong fluid
• Pressure loss at the seal

🛠️ 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

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B, TAMD122P-C
• Volvo Penta AQD70B, AQD70BL, AQD70CL, AQD70D, AQD70C
• Volvo Penta TAMD162C-C, TAMD162A, TAMD162C, TAMD162C-B
• Volvo Penta TAMD70B, TAMD70E, TAMD70C, TAMD70D
• Volvo Penta MD100A, MD100B, MD100B-CC
• Volvo Penta MD70B, MD70BK, MD70C
• Volvo Penta TAMD60A, TAMD60B, TAMD60C
• Volvo Penta TAMD120A, TAMD120B
• Volvo Penta TAMD165A, TAMD165C
• Volvo Penta THAMD70C, THAMD70B
• Volvo Penta TMD100A, TMD100C
• Volvo Penta TMD120A, TMD120B
• Volvo Penta TMD70C, TMD70B
• Volvo Penta MD120A
• Volvo Penta TAMD102A
• Volvo Penta TAMD103A
• Volvo Penta TAMD121D
• Volvo Penta TAMD163A-A
• Volvo Penta TAMD74A
• Volvo Penta TMD102A
• Volvo Penta TMD121C
• Volvo Penta TMD122A