Exhaust Flap / Non-Return Valve – Fits Volvo Penta 290, SP and DP Series (Replaces 852644) 4HP If the roller is seized

If the roller is seized and does not spin freely when launching or retrieving your boat

kit fits inside existing housing What’s in the Box

Disconnect the boat's battery before beginning work

let it cool

durable plastic resistant to cuts and abrasions

Exhaust Flap / Non-Return Valve – Fits Volvo Penta 290, SP and DP Series (Replaces 852644) 4HP If the roller is seizedProduct Details This Exhaust Flap Non Return Valve is a crucial component designed to prevent water from flowing back into the engine through the exhaust system. It is engineered for a direct fit on a range of Volvo Penta sterndrives, including the 290, 290DP, SP A through SP E, and DP A through DP C series models. This part serves as a direct replacement for Volvo Penta part number 852644 and interchanges with aftermarket references such as Repower