Tight connection: As the key component connecting the engine cylinder head and cylinder block, the cylinder head bolt bears a high fastening force. It securely fixes the cylinder head to the cylinder block, ensuring a tight fit between the two, preventing gaps during engine operation, avoiding high-temperature and high-pressure gas leakage, maintaining proper internal engine pressure, and supporting efficient engine performance.Superb craftsmanship: Manufactured using advanced forging technology, the bolt features a dense and uniform internal structure, enhancing material strength and toughness. Precise thread machining ensures a secure fit with the nut or threaded hole, reducing the risk of thread wear and loosening. A specialized heat treatment process optimizes mechanical properties and improves fatigue resistance.Durable construction: Resistant to damage and designed for long service life.High-quality material: Constructed from premium metal for reliable performance.Name: Engine Cylinder Head Bolt Kit Part Number: ES72434 HBK928 90910-A2011 Fitment: Fits 2009–2010 Fits CT200h 2011–2017 Fits 2009–2020 Fits Matrix 2009–2014 Fits iM 2017–2018 Fits Prius 2010–2020 Fits Prius V 2012–2018 Fits Prius Plug-In 2012–2015 Fits Prius P 2017–2020 (For Engine: 2ZRFE, 2ZRFXE, 1.8L L4 DOHC) Color: Black Material: Metal Package Contents: 10 pcs x Engine Cylinder Head Bolt Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by ±1–3 cm.