Idler Pulley – Fits Volvo Penta D4/D6 (Replaces 21280913, 3848896) 305HP as the internal design and

as the internal design and pressure ratings differ

Product Type Thermostat Kit Installation Direct replacement (removal and installation with common tools) Temperature Rating 140°F (60°C) Housing Material Metal Operating Temperature 140°F (60°C) opening temperature Included Components Gasket and seal What’s in the Box

and a water hose needed to fully service the transom assembly and maintain watertight integrity

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as they can degrade the fabric and waterproof coating

Idler Pulley – Fits Volvo Penta D4/D6 (Replaces 21280913, 3848896) 305HP as the internal design andProduct Details This aftermarket Idler Pulley Fits Volvo Penta D4 D6 Marine Diesel Engines (Replaces 21280913, 3848896) is designed for reliable compressor belt tensioning. It is compatible with specific Volvo Penta D4 series models (D4 260, D4 300) up to serial number 2004017297 and D6 series models (D6 350, D6 370, D6 400, D6 435) up to serial number 2006032252. This component is a direct interchange for Volvo Penta part numbers 21280913, 3848896,