# 20429371 Insulator | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta connector insulator used in D7A engine cable and fuse harnesses. It supports and electrically separates the terminals inside the compatible housing.

## 🚤 Compatibility

-   **Engine Family:** D, TAD, TWD

Full model list at the end of this description.

## ⚙️ 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
-   Engine type: Volvo Penta electronic diesel electrical systems
-   Quantity varies by assembly, most commonly six

## 🔌 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

## 🛠️ Service Notes

-   Note how the insulator sits and which way round it goes before taking it out — its whole job is keeping two things apart, and it only does that fitted correctly
-   Renew rather than reuse anything cracked, crushed, hardened, charred or oil-soaked; a degraded insulator has already stopped doing its job
-   Fit to clean, dry faces with the original fastener arrangement, tightened only to the figure in the workshop manual for your engine — crushing an insulator defeats it
-   Look for why the old one failed, since the heat, chafe, vibration or leak that finished it will do the same to the new one

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   874368 - related receptacle housing
-   3888383 - terminal cover
-   20429872 - related housing
-   20429873 - insulator cover
-   20429993 - pass-through

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP
-   Volvo Penta TAD1341-43GE-B, TAD1341VE, TAD1341GE
-   Volvo Penta TAD1344-45GE-B, TAD1344VE, TAD1344GE
-   Volvo Penta TAD1640-42GE-B, TAD1640VE-B, TAD1640-42VE-C
-   Volvo Penta TAD1342VE, TAD1342GE
-   Volvo Penta TAD1343VE, TAD1343GE
-   Volvo Penta TAD1345GE, TAD1345VE
-   Volvo Penta TAD1350GE, TAD1350VE
-   Volvo Penta D13C6-A MP
-   Volvo Penta TAD1140-42VE
-   Volvo Penta TAD1150-52VE
-   Volvo Penta TAD1170-72VE
-   Volvo Penta TAD1340VE
-   Volvo Penta TAD1346GE
-   Volvo Penta TAD1351GE
-   Volvo Penta TAD1352GE
-   Volvo Penta TAD1353GE
-   Volvo Penta TAD1354GE
-   Volvo Penta TAD1355GE
-   Volvo Penta TAD1360-62VE
-   Volvo Penta TAD1363-65VE
-   Volvo Penta TAD1641VE-B
-   Volvo Penta TAD1642VE-B
-   Volvo Penta TAD1643VE-B
-   Volvo Penta TAD1650VE-B/51VE
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1670-72VE
-   Volvo Penta TWD1663GE

## Details

- **Price:** 31.93 AUD
- **Vendor:** Volvo Penta
- **Type:** Electrical & Wiring
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 31.93 AUD | In stock |

## Images

- 20429371 Insulator | Genuine Volvo Penta Part
- 20429371 Insulator | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20429371-insulator-genuine-volvo-penta)
> Updated: 2026-09-06