Genuine Volvo Penta belt for Volvo Penta D4.-D6 inboard engines.It is found on Volvo Penta Inboard engines: D4-300A-A/A-C/A-D/A-E/D-A/D-C/D-D/D-E/D-F D6-400A-E/A-F D6-435D-A/D-C/D-D/D-E/D-F/I-A/I-C/I-D/I-E/I-SC-FHis characteristics : Outer perimeter: 1440mm Thickness: 21mm The 21405493 ensures optimal performance and durability. Designed for efficiency and longevity.