22389528 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta supercharger sealing o-ring is used in the following application: Volvo Penta D8A2-A MP supercharger inlet systems. Seals the supercharger-to-pipe connection against compressed-air leakage while allowing the joint to accommodate normal thermal movement.

🚤 Compatibility

Typically suits:

• Volvo Penta D8A2-A MP
• Volvo Penta D8A4-A MP

• Engine Family: D

⚙️ Key Features

• Genuine OEM elastomer compound
• Correct cross-section and diameter
• Designed for the intended fluid and temperature
• Provides controlled compression in the original groove
• Replace whenever the joint is separated

🔌 Function

Seals the supercharger-to-pipe connection against compressed-air leakage while allowing the joint to accommodate normal thermal movement.

⚠️ Common Signs of Failure

• Oil mist or dirt tracks around the sealed joint
• Hissing under acceleration
• Reduced boost or power
• O-ring flattened, cut, hardened or swollen
• Repeated seal extrusion from misalignment
• Damaged groove or pipe bead preventing proper compression

🛠️ 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 / Related Numbers

• 22393844 - associated supercharger
• 78466702 - current associated connecting pipe
• 22384251 - superseded connecting-pipe reference
• 23123550 - associated supercharger clutch kit
• 22796353 - associated O-ring
• 22909943 - associated O-ring
• 21926626 - associated bracket
• 21617483 - associated bracket

📦 Condition

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