# 21308512 Insulating Bushing | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Starter and Alternator Insulating Bushing - Part Number: 21308512

  

An electrically insulating mounting bushing used to isolate the designated fastener or component while maintaining correct alignment and controlled clamping.

  

⚙️ Key Features

  

• Correct OEM bore and outside diameter

• Provides electrical isolation

• Reduces vibration and metal-to-metal contact

• Designed for the assigned mounting position

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• Current OEM reference: 21308512

  

OEM / Related Numbers:

  

• 21308512

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

• D6-280A-A starting-system installations

• D6-350A-A

• D6-370A-C

• D8A2-A MP

• D11C1-A MP

  

🔌 Function

  

The bushing isolates the mounted hardware and supports correct alignment under engine vibration.

  

Common signs of failure or damage:

  

• Cracked or split insulation

• Electrical shorting or loss of isolation

• Loose or misaligned component

• Heat or arc marks

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 29.52 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 29.52 AUD | In stock |

## Images

- 21308512 Insulating Bushing | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21308512-insulating-bushing-genuine-volvo-penta)
> Updated: 2026-08-02