21407026 Belt | Genuine Volvo Penta Part

🔧 Product Description

A dedicated drive belt used to operate the compressor on selected Volvo Penta D4-260 and D6-350/D6-370 marine diesel engines. It is separately specified from the main alternator and power-steering belt.

🚤 Compatibility

• Engine Family: D
• HP Range: 260-370 HP

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta compressor belt
• Designed for the original compressor pulley arrangement
• Correct belt length and rib profile
• Replace if glazed, cracked or contaminated
• Engine type: D4 four-cylinder or D6 inline-six turbocharged marine diesel

🔌 Function

Transfers crankshaft drive to the engine-mounted compressor.

⚠️ Common Signs of Failure

• Belt squeal or slipping
• Visible cracking or rib damage
• Compressor does not operate correctly
• Glazed belt surface
• Frayed edges or rubber debris
• Repeated belt loss caused by pulley misalignment

🛠️ Service Notes

• Release the tensioner or adjuster and roll the belt on by hand; never lever a belt over a pulley flange, which cuts the cords and cracks the belt
• Check the belt is seated fully in every groove and that the pulleys line up before turning the engine over
• Inspect the pulleys, idlers and tensioner whenever a belt is changed — a worn or wobbling pulley will destroy a new belt quickly
• Tension it by the method and to the figure given in the workshop manual for your engine, then run up and recheck, as belts settle after the first period of running
• Keep oil, fuel and coolant off the belt, and carry a spare of the correct type aboard

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21407026 → Supersedes 3583963 → Supersedes 3584433

OEM / Related Numbers

• 3583963 earlier number superseded by this part
• 3584433 earlier number superseded by this part
• 21405493 - belt used on specified D4-300 and D6-435 configurations

Aftermarket / Verified Equivalents

• Recmar: RM21407026

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-370A-C, D6-350A-A, D6-350A-B, D6-370D-E, D6-370D-B, D6-370A-F, D6-370D-A, D6-370D-C, D6-370D-D, D6-370A-D, D6-370A-E, D6-370D-F, D6-370A-B
• Volvo Penta D4-260A-B, D4-260A-A, D4-260A-C, D4-260A-D, D4-260A-E, D4-260A-F, D4-260D-B, D4-260D-C, D4-260D-D, D4-260D-E, D4-260D-F