978548 V-Belt | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta v-belt listed at 2 x 1225 mm — two belts running together — weighing 0.195 kg for 33 applications across AQ, TD, TWD, BB, TID and B engines, superseding 966798. The paired 1225 mm length is what identifies it.

🚤 Compatibility

• Engine Family: AQ, TD, TWD, BB, TID, B, TAD, MD, MB, AQD

Full model list at the end of this description.

⚙️ Key Features

• 2 x 1225 mm — a paired belt length
• Fits 33 applications across AQ, TD, TWD, BB, TID and B engines
• 0.195 kg
• Supersedes 966798

🔌 Function

Carries drive from the crankshaft pulley to an engine-driven accessory as a pair of belts sharing the load.

⚠️ Common Signs of Failure

• Squealing from the front of the engine on start-up or under load
• One belt visibly slacker or running deeper in its groove than the other
• Cracks across the back of a belt, or glazed and shiny flanks
• Black belt dust building up under the pulleys
• Charge warning light flickering, or the alternator falling behind

🛠️ Service Notes

• Renew both belts together — a new belt run against a worn one takes almost all the load and will not last
• Belt 978552 is published just 1 g away at 0.194 kg with no length given, so the two cannot be separated by weight — order by number

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 978548 → Supersedes 966798

OEM / Related Numbers

• 966798 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta AQ115A, AQ115B
• Volvo Penta 100S, 110S
• Volvo Penta TD100G-85, TD100G
• Volvo Penta TID100K, TID100K-87
• Volvo Penta AQ165A
• Volvo Penta AQD21A
• Volvo Penta B20
• Volvo Penta BB165A
• Volvo Penta MD21A
• Volvo Penta TAD1030V
• Volvo Penta TD1030VE
• Volvo Penta TWD1030ME
• Volvo Penta TWD1031VE