(In the name of Allah, the Most Gracious, the Most Merciful) Peace, mercy, and blessings of Allah be upon you, Dear brothers, we offer you H1 engines with an 8-month electronic warranty. We also offer you the refurbishment of factory engines with the same warranty. The refurbishment involves changing the entire internal gasket of the engine with original spare parts, including bearings (fixed and moving), lifters, piston rings, valve seals, pistons, gasket set, and so on. Manufacturing defects are generally addressed. H1 defect: overheating. This is addressed by widening the water circulation path through the head and installing a high-pressure pump. We also offer free checks and inspections of consumable parts that can damage the engine if not replaced, and we inform the customer about them... Naturally, we check the cooler, radiator, and all consumable parts.