849791 Tensioner | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta belt tensioner from the Alternator, Charging, Electric Motor, Electric Drives group, weighing 0.168 kg and listed for 27 applications across TAMD and TMD series engines. It is the heaviest of the four tensioners in this range.

🚤 Compatibility

• Engine Family: TAMD, TMD

Full model list at the end of this description.

⚙️ Key Features

• 0.168 kg
• Heaviest of the four tensioners listed here
• 27 applications on TAMD and TMD series engines
• Alternator, Charging, Electric Motor, Electric Drives group

🔌 Function

Takes up slack in the drive belt and holds it at working tension so the alternator is driven without slip.

⚠️ Common Signs of Failure

• Belt squeal on start-up or under electrical load
• Slack that cannot be taken up by adjustment
• Adjuster thread seized, stripped or notchy
• Glazed belt flanks with black dust around the pulleys
• Charging output dropping when load is applied

🛠️ Service Notes

• The other tensioners here are 849408 at 0.100 kg, 849295 at 0.113 kg in the R variant and 849847 at 0.120 kg, so order by part number and engine series
• Renew the belt with the tensioner if it is glazed or cracked and re-check tension after the first hours of running

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
• Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B
• Volvo Penta TAMD102A, TAMD102D
• Volvo Penta TAMD63L-A, TAMD63P-A
• Volvo Penta TAMD72P-A, TAMD72WJ-A
• Volvo Penta TAMD73P-A, TAMD73WJ-A
• Volvo Penta TAMD103A
• Volvo Penta TAMD121D
• Volvo Penta TAMD71B
• Volvo Penta TAMD75P-A
• Volvo Penta TMD102A
• Volvo Penta TMD121C
• Volvo Penta TMD122A