Volvo Penta KAD Tensioner, 95mm diameter.
Tensioners are a common problem if your KAD engine is squealing or shredding a belt.
Some KAD diesel engines use a 70mm tensioner, see part number 861563
Volvo Penta Part No: 3582324 - Two are fitted
For Volvo Penta Diesel Engines: KAD32, KAD42, KAD43, KAD44, KAD300 using 95m diameter tensioners.
For the 70mm version, use part number 861563.