820356 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta o-ring listed for 25 applications across the AQ, BB, B, MD, MB and AQD series engines. It is one of three o-rings here that share that same fitment list, so the part number is the only reliable way to identify it.

🚤 Compatibility

• Engine Family: AQ, BB, B, MD, MB, AQD

Full model list at the end of this description.

⚙️ Key Features

• 25 applications across six engine series
• One of three o-rings sharing the same fitment
• Identified by part number rather than by size
• Fuel system sealing ring

🔌 Function

Seals a joint in the fuel circuit by being squeezed into its groove, keeping fuel in and air out.

⚠️ Common Signs of Failure

• Fuel weeping or a fuel smell at the joint
• Air pulled into the fuel system, giving hunting and hard starting
• O-ring flattened, hardened or split on removal
• Staining or damp below the joint after each run

🛠️ Service Notes

• O-rings 820338 at 0.005 kg and 820355 at 0.001 kg share this same fitment list and name, so tell us the joint you are sealing and order by part number
• Renew every o-ring disturbed on the joint

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta AQ115A, AQ115B
• Volvo Penta 100S, 110S
• Volvo Penta AQ165A
• Volvo Penta AQD21A
• Volvo Penta B20
• Volvo Penta BB165A
• Volvo Penta MD21A