# 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-   20443761 earlier number superseded by this part
-   3537521 earlier number superseded by this part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

## Details

- **Price:** 5.05 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.05 AUD | In stock |

## Images

- 20708247 O-Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20708247-o-ring-genuine-volvo-penta)
> Updated: 2026-09-06