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S4K Engine Cylinder Head Fastener

Other Engine Parts
January 03, 2026
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Brief: Let’s dive in — see this solution in action and notice the key moments. This video provides a detailed look at the 5I-7718 Cylinder Head Bolt, showcasing its design, material composition, and installation process for Mitsubishi S4K, CAT 3066, 3064 engines, and 320B excavators. You'll learn how it ensures a tight seal and stability in high-temperature, high-pressure environments.
Related Product Features:
  • Specifically designed for S4K engine models, 3066/3064 engines, and CAT 320B excavators.
  • Made of high-strength, corrosion-resistant alloy steel for long-term durability.
  • Ensures a tight seal and stability between the cylinder head and engine block.
  • Boasts excellent compressive strength and high-temperature resistance for prolonged, high-load operation.
  • Precision machining ensures thread accuracy for easy installation and leak prevention.
  • Capable of withstanding prolonged operation in high-temperature environments.
  • High compatibility with some CAT models and Komatsu equipment.
  • Part numbers include 5I7718, CA5I7718, 34401-11400, and 3440111400.
FAQs:
  • What engine models is the 5I-7718 Cylinder Head Bolt compatible with?
    The 5I-7718 Cylinder Head Bolt is specifically designed for Mitsubishi S4K series engines, CAT 3066 and 3064 engines, and is applicable to CAT 320B excavators. It also has high compatibility with some other CAT models and Komatsu equipment.
  • What material is the 5I-7718 Cylinder Head Bolt made from?
    It is made from high-strength, corrosion-resistant alloy steel, ensuring long-term durability and performance in high-temperature, high-pressure environments.
  • What are the key features that ensure the bolt's reliability?
    Key features include high-strength, corrosion-resistant alloy material, precision machining for accurate threads to prevent leaks, and excellent high-temperature resistance for stable engine operation under prolonged, high-load conditions.
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