# 20429873 Insulator Cover | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Engine Connector Insulator Cover - Part Number: 20429873

  

Genuine Volvo Penta insulator cover used with electrical connector housing 20429872. It protects and retains the terminal insulator at the rear of the engine harness connector.

  

⚙️ Key Features

  

• Original keyed Volvo Penta harness component

• Protects and locates electrical terminals or cable insulation

• Used in sealed engine wiring assemblies

• Must match the original connector family and pin arrangement

• Inspect seals and terminals during replacement

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20429873 - current Volvo Penta electrical-harness reference

  

OEM / Related Numbers:

  

• 20429872 - matching housing

• 20429371 - connector insulator

• 20429993 - pass-through

• 3888383 - related terminal cover

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta sealed engine wiring-harness systems

  

Typically suits:

  

• Engine / equipment models:

• D7A 285F

• D6-300A-G

• D6 G-generation wiring installations

• Volvo Penta industrial harnesses listing the part

  

• Engine Type: Volvo Penta electronic diesel electrical systems

• Year / Serial Range: Harness, connector keying and engine serial-number dependent

  

🔌 Function

  

Supports, insulates, retains or seals the engine wiring harness at the assigned connector or pass-through position.

  

Common signs of failure:

  

• Intermittent electrical or sensor fault

• Water or corrosion inside the connector

• Broken locking or retaining feature

• Harness abrasion at the opening

• Loose or pushed-back terminals

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 8.75 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 8.75 AUD | In stock |

## Images

- 20429873 Insulator Cover | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20429873-insulator-cover-genuine-volvo-penta)
> Updated: 2026-07-29