ACL Race Series Main Bearing Set Toyota 1FZ-FE 4.5L 6B7990H-STD

Race-Ready Bearing Support for Toyota Inline Sixes. ACL performance bearings built for strength and oil control in high-performance 1FZ builds. ACL Race Series Main Bearing Set – Toyota 1FZ-FE 4.5L (Standard Size) (Part: 6B7990H-STD) Perfect for naturally aspirated and turbocharged builds requiring robust crankshaft support and excellent wear resistance. Key Features: ✔ Tri-metal composition — improved fatigue resistance over OEM ✔ Designed to maintain oil film under extreme conditions ✔ Suitable for high compression or boosted 1FZ-FE engines ✔ Machined for performance clearances Compatibility: Toyota Land Cruiser 1FZ-FE 4.5L inline-6 (1990–2007) Specs: Bearing Type: Crankshaft Main Size: Standard Set: Full main bearing set