22171036 Belt Tensioner | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D4-G / D6-G Supercharger Belt Tensioner, part number 22171036. A genuine automatic belt tensioner used in the mechanically driven supercharger system on Volvo Penta D4-G and D6-G marine engines.

🚤 Compatibility

Typically suits:

• Volvo Penta D6-440I-G
• Volvo Penta D6-480I-G
• Volvo Penta D6-380A-G
• Volvo Penta D6-380D-G
• Volvo Penta D6-440D-G
• Volvo Penta D6-480D-G
• Volvo Penta D6-400A-G
• Volvo Penta D6-440A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-320A-G
• Volvo Penta D4-300A-G
• Volvo Penta D6-480A-G

• Engine Family: D
• HP Range: 270-480 HP
• Year Range: Approximately 2016 - current supported applications

⚙️ Key Features

• Spring-loaded automatic tension control
• Factory pulley alignment and belt-load specification
• Designed for the matching supercharger or accessory belt
• Heat- and vibration-resistant bearing construction
• Direct replacement for the specified belt-drive arrangement
• Engine type: 5.5L inline six-cylinder common-rail turbocharged and supercharged marine diesel

🔌 Function

Maintains the correct belt tension and pulley contact as the belt wears and engine temperature changes.

⚠️ Common Signs of Failure

• Belt squeal, flutter or repeated derailment
• Tensioner arm bouncing at idle
• Bearing grinding, roughness or pulley wobble
• Glazed, cracked or rapidly worn belt
• Loss of supercharger, cooling or accessory drive

🛠️ Service Notes

• Renew the belt whenever the tensioner is changed, and check every pulley in the drive for roughness, wobble or a seized bearing at the same time
• Wind the tensioner back with the correct tool on the drive provided for it; do not lever on the arm or on the pulley, and release it onto the belt under control
• Check that the arm swings freely over its whole travel and returns smoothly, and that the mounting face and any dowel or locating pin are clean so the pulley sits square
• Tighten the mounting bolt to the figure in the workshop manual for your engine — an incorrectly tightened tensioner bolt is a common cause of repeat belt failures
• Run the engine and confirm the belt tracks central on every pulley with no flutter of the tensioner arm

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 22171036 → Supersedes 21786692 → Supersedes 21678750 → Supersedes 3847481 → Supersedes 3883784 → Supersedes 3588305 → Supersedes 3582692

OEM / Related Numbers

• 21786692 earlier number superseded by this part
• 21678750 earlier number superseded by this part
• 3847481 earlier number superseded by this part
• 3883784 earlier number superseded by this part
• 3588305 earlier number superseded by this part
• 3582692 earlier number superseded by this part
• 23118554 - D6 supercharger references
• 22914429 - D6 supercharger references
• 23079315 - D4 supercharger reference
• 3847482 - pulley
• 23324914 - drive belt
• 23124025 - support brackets
• 23124005 - support brackets
• 3582971 - support brackets
• 23285088 - supercharger-clutch kits
• 23050163 - supercharger-clutch kits
• 23081928 - supercharger-clutch kits
• 23222774 - spindle

📦 Condition

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