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