Discover the high-quality Coolant Expansion Tank for DH excavators, including models DH150-7, DH220-7, DH215-7-9, DH225-7-9, DH258, DH300-5-7-9, and DH370-7. This essential spare part ensures optimal engine performance by preventing overheating. Made in Guangzhou, China, with fast delivery and flexible payment options.