This is a genuine TOYOTA replacement bolt, part number 9091002186, engineered for use in the cylinder head assembly of Japanese market vehicles. Maintaining the integrity of the cylinder head seal is crucial for engine performance and longevity. Using OEM-specified bolts like this one guarantees the correct torque specifications and material strength required for this critical engine component. Proper installation of the cylinder head requires specific fasteners that can withstand the high temperatures and pressures within the engine. This TOYOTA bolt is manufactured to meet these demanding requirements, ensuring a reliable seal and preventing leaks. It is essential to replace cylinder head bolts according to manufacturer recommendations or when performing cylinder head service to maintain optimal engine function.
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