This premium standard-size (STD) ACL Race Series Big End Conrod Bearing Set (Part No. 8B8091H-STD) is explicitly engineered for high-performance and competitive motorsport applications. Designed to meet the brutal demands of high-RPM, high-load environments, this kit provides unmatched durability and reliability for premium Toyota and Lexus V8 quad-cam platforms.

Whether you are rebuilding a naturally aspirated street cruiser, setting up a high-boost forced induction setup, or preparing a dedicated drift/race engine, ACL Race Series bearings offer the rugged metallurgy needed where standard factory components fail. Featuring advanced tri-metal copper-lead F781 construction, these bearings provide superior fatigue strength, exceptional thermal conductivity, and precise oil clearance tolerances required to protect your crankshaft assembly under immense load.

Official Engine Application Fitment

This big end bearing set fits the following popular Toyota & Lexus quad-cam V8 engine platforms:

• 1UZ-FE: 4.0L V8 DOHC 32v (1989–2004) – Found in Toyota Soarer, Celsior, Crown, and Lexus LS400/SC400.
• 2UZ-FE: 4.7L V8 DOHC 32v (1998–2011) – Found in Toyota Land Cruiser, Tundra, Sequoia, and Lexus LX470.
• 3UZ-FE: 4.3L V8 DOHC 32v (2000–2010) – Found in Lexus LS430, GS430, and SC430.

ACL Race Series Advanced Features

• High-Strength Tri-Metal Design: Formulated with ACL's legendary F781 material layer arrangement to absorb maximum load impacts while defending against high-friction wear.
• Hardened Steel Backing: Greatly improves bearing retention within the connecting rod tunnel, reducing the risk of bearing rotation or spinning under extreme RPM stresses.
• Optimized Crush & Tight Tolerances: Ensures a perfect, secure fitment block with meticulous oil film maintenance across the journal surfaces.
• Enlarged Chamfers: Fully accommodates large-radius performance crankshaft fillets without binding or tracking issues.

Technical Specifications

• Bearing Type: Connecting Rod / Big End Bearings Set
• Sizing Profile: Standard Size (STD)
• Material Grade: Tri-Metal F781 Copper-Lead Composition
• Manufacturer Part Number: 8B8091H-STD
• Engine Configuration: V8 32-Valve DOHC

Note: This is a Standard (STD) sizing kit. Always verify your crankshaft journal dimensions, tunnel alignments, and target oil clearances on your build bench during engine mockup assembly prior to final installation.