This resurfaced cylinder head is a genuine OEM part for Kawasaki Ultra 150 STX-R 1200 models manufactured between 1999 and 2005. The part number for this cylinder head is 11001-3741. It is ideal for anyone looking to replace a damaged or worn out cylinder head on their personal watercraft. The brand is Kawasaki, a well-known and reputable manufacturer of high-quality watercraft parts. This cylinder head has been resurfaced to ensure it is in excellent condition and ready for use. It is compatible with other parts and accessories for personal watercrafts and can be easily installed to improve the performance of your watercraft.