The Iseki 621151000800 Main Bearing, Standard size, is an authentic OEM component designed for optimal performance and durability in Iseki engines. This genuine main bearing ensures precise fitment and reliable operation, crucial for maintaining engine integrity and longevity. Manufactured to Iseki's stringent quality standards, it provides essential support for the crankshaft, reducing friction and wear. Ideal for replacement during engine overhauls or maintenance, ensuring your Iseki machinery operates efficiently.