A general guideline for preventative maintenance is to replace it every 500-700 operating hours or every 4-5 years
958359 Volvo Penta MD70B/BK/C 4-Stroke 966978
This kit includes the correct key type for the specified engine models
A general guideline is to inspect the belt during every oil change and plan for replacement every 3-5 years or as recommended in your Yanmar service manual
or missing vanes on the impeller itself
Thermostat Kit – Fits Volvo Penta AQD40A, TMD40A, TAMD40B Diesel Engines (Replaces 3831425) 2.5HP A general guideline for preventativeProduct Details This Thermostat Kit Fits Volvo Penta AQD40A, TMD40A, TAMD40B Diesel Engines (Replaces 3831425) is designed for a wide range of Volvo Penta diesel marine engines, including AQD, TMD, and TAMD series models. It operates at a 76C (169F) opening temperature to maintain optimal engine performance in both saltwater and freshwater cooling systems. This kit serves as a direct replacement for Volvo Penta part numbers 3831425, 467014, and