# 21593939 Rubber Cushion Kit | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D13 65-Shore Reversing Gear Mount Rubber Cushion Kit - Part Number: 21593939

  

A genuine 65-Shore elastomer mounting kit used beneath selected D13 marine reversing gears. The cushion isolates gear vibration while supporting driveline alignment and static load.

  

⚙️ Key Features

  

• 65-Shore hardness

• For D13B marine propulsion reversing-gear installations

• Includes cushion and adjustment hardware

• Hardness must match the installation specification

  

📋 Kit Contents

  

• Rubber cushion - 21586050

• Hex nut - 955786

• Lock washer - 847766

• Washer - 120224

• Adjusting screw - 3839410

• Adjusting hex nut - 3839409

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21593939 current 65-Shore cushion-kit reference

  

OEM / Related Numbers:

  

• 21926836 / 21926837 / 21926838 - related reversing gears

• 21609861 / 21575444 - related flexible couplings

• 21575446 - hub

• 21588209 - adapter

  

Aftermarket / Verified Equivalents:

  

• No direct aftermarket equivalent verified

• 3843493 55-Shore and 22596041 60-Shore are other Volvo hardness options, not automatic substitutes

  

🚤 Compatibility

  

Confirmed in Volvo Penta D13B-A MP marine propulsion packages using the related reversing gears.

  

• HP Range: approximately 700HP-1,000HP

• Year Range: approximately 2010s

• Serial Range: reversing-gear weight, ratio and mounting specification controlled

  

🔌 Function

  

The cushion supports the transmission while damping vibration and allowing precise alignment through the adjusting hardware.

  

Common signs of failure:

  

• Rubber cracks or separates

• Gearbox vibration increases

• Mount settles and alignment changes

• Oil contamination softens rubber

• Adjusting hardware corrodes or loosens

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 1171.23 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1171.23 AUD | In stock |

## Images

- 21593939 Rubber Cushion Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21593939-rubber-cushion-kit-genuine-volvo-penta)
> Updated: 2026-07-29