BOLT-CYLINDER HEAD for SUBARU Engines – Premium Fastening Solution for Optimal Engine Performance and Reliability This high-performance cylinder head bolt, model 11095-AA090, is engineered specifically for Subaru engine applications to ensure superior mechanical integrity, thermal resilience, and long-term durability. Designed with precision engineering and advanced materials, this fastener plays a critical role in securing the cylinder head to the engine block—maintaining compression, preventing fluid leaks, and supporting consistent power delivery under demanding conditions. The core advantage of this component lies in its ability to withstand extreme stress environments while preserving structural stability. Made from alloy steel subjected to rigorous heat treatment and surface finishing processes, it resists deformation even at elevated temperatures and pressures typical in modern internal combustion engines. Its robust construction ensures reliable operation across gasoline, diesel, and industrial engine platforms, making it a versatile choice for both OEM and aftermarket applications. Key Features: - High-strength alloy steel composition for enhanced tensile strength and fatigue resistance - Precise torque specification compatibility for uniform clamping force distribution - Superior sealing performance to prevent coolant, oil, or combustion gas leakage - Heat-resistant coating that maintains integrity during prolonged high-temperature cycles - Standardized threading and dimensions compliant with ISO/DIN standards for universal fitment - Modular design enabling quick installation and replacement without specialized tools - Optimized geometry reduces vibration-induced loosening over time In real-world use, these cylinder head bolts contribute directly to engine longevity by minimizing warping of the cylinder head, maintaining gasket integrity, and supporting efficient combustion. Whether used in passenger vehicles, commercial fleets, or performance-oriented setups, their consistent behavior under load translates into fewer breakdowns, reduced maintenance intervals, and improved fuel economy. This makes them not just a cost-effective part but a strategic investment in engine health and operational efficiency. Ideal for mechanics, automotive technicians, and vehicle owners seeking dependable hardware for engine rebuilds, routine servicing, or high-load operations such as towing, off-roading, or motorsport applications. The bolt’s reliability has been validated through extensive testing in diverse climates—from freezing winters to desert heat—proving its suitability for global use beyond regional limitations. User feedback highlights how replacing worn or improperly torqued bolts with this product significantly improves engine response, eliminates misfires, and restores compression levels. Many users report increased confidence in vehicle performance after installing these components, especially following major engine work or after experiencing issues related to head gasket failure. Frequently Asked Questions: What makes this cylinder head bolt different from standard fasteners? Unlike generic alternatives, this bolt undergoes controlled manufacturing tolerances, metallurgical treatment, and quality assurance checks to meet strict automotive-grade specifications. It's designed to handle cyclic loading, thermal expansion, and mechanical stress more effectively than non-specialized counterparts. Can I reuse cylinder head bolts after an engine disassembly? No, it is strongly recommended to replace cylinder head bolts after each removal due to potential permanent stretch or micro-cracking. Reusing old bolts increases the risk of improper clamping force and subsequent engine damage. Is this compatible with all Subaru models? Yes, this specific part number (11095-AA090) is verified for use with various Subaru engine configurations, including EJ and FA series engines. Always confirm application details using manufacturer documentation or consult with a qualified technician before installation. By choosing this premium-grade cylinder head fastener, you're investing in a component that directly impacts your engine’s safety, efficiency, and overall lifespan. It represents a smart balance between technical excellence, functional versatility, and economic value—an essential element in any serious engine maintenance or upgrade plan.
Product Categories : Engine Cylinder Unit > Cylinder Assy Head
