20708247 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

A genuine sealing O-ring for a Volvo Penta air-conditioning connection identified as M16 x 1.8. It seals the corresponding refrigerant fitting and must be compatible with the system refrigerant and compressor oil.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1380-82GE
• Volvo Penta TAD1180-83VE
• Volvo Penta TAD1381-85VE
• Volvo Penta TWD1683VE

• Engine Family: TAD, TWD

⚙️ Key Features

• M16 x 1.8 connection specification
• Material selected for automotive/marine air-conditioning refrigerant and lubricant exposure
• Profile matches the corresponding A/C fitting groove
• Provides a high-integrity pressure seal through temperature cycling
• Install with the approved refrigerant-compatible lubricant
• Always renew after the joint has been opened

🔌 Function

Seals the M16 x 1.8 air-conditioning connection against refrigerant and oil leakage.

⚠️ Common Signs of Failure

• Refrigerant or oil staining appears at the fitting
• System pressure falls or cooling performance declines
• The O-ring is flattened, cut or swollen
• The joint leaks during pressure or vacuum testing
• Replacement is required whenever the fitting is disconnected

🛠️ 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

• 20708247 → Supersedes 20443761 → Supersedes 3537521

OEM / Related Numbers

• 20443761 earlier number superseded by this part
• 3537521 earlier number superseded by this part

Aftermarket / Verified Equivalents

• DT Spare Parts: 2.76205
• Sampa: 115.A505
• SLP: OR-521

📦 Condition

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