King Engine Bearings Tri-Metal Copper Lead Rod Bearing Set

2004–2006 Scion xA / 2004–2006 Scion xB / 2016 Scion iA

CR4349CP0.5

Overview:

The King Engine Bearings Tri-Metal Copper Lead Rod Bearing Set is engineered specifically for Toyota 1NZ-FE and 2NZ-FE engines, making it an ideal upgrade for select Scion and Toyota models. Designed to replace the factory connecting rod bearings, this trimetal bearing set offers enhanced durability and reliability for your engine’s rotating assembly.

Whether you are performing routine maintenance or building a performance-oriented engine, these bearings provide the strength and wear resistance needed to support your vehicle’s powertrain. They are well-suited for daily drivers and enthusiasts seeking dependable engine components that maintain tight clearances and reduce friction under demanding conditions.

Key Features:

This tri-metal rod bearing set incorporates advanced materials and construction techniques to ensure long-lasting performance and protection for your engine’s connecting rods.

• Tri-metal construction featuring a copper-lead alloy layer for excellent conformability and embedability
• Optimized for Toyota 1NZ-FE and 2NZ-FE engines, ensuring precise fit and compatibility
• Superior fatigue resistance to withstand high loads and extended engine operation
• Enhanced wear characteristics to reduce bearing surface degradation over time
• Manufactured to OEM specifications for reliable performance and durability
• Ideal for both stock rebuilds and moderate performance upgrades
• Helps maintain proper oil clearance for optimal lubrication and reduced friction

Construction & Design:

The King tri-metal rod bearings utilize a layered design that combines a steel backing with a copper-lead intermediate layer and a soft overlay. This composition provides excellent load-carrying capacity and the ability to embed small debris, protecting the crankshaft journal from damage. The copper-lead layer enhances conformability, allowing the bearing to adapt to minor imperfections in the crankshaft surface for improved sealing and oil film retention.

Precision manufacturing ensures consistent thickness and tight tolerances, which are critical for maintaining proper bearing clearances and preventing premature wear. This design supports smooth engine operation and contributes to overall engine longevity.

Installation & Fitment:

This rod bearing set is a direct replacement for the factory bearings in the following vehicles equipped with Toyota 1NZ-FE or 2NZ-FE engines:

• Scion xA Base 2004–2006
• Scion xB Base 2004–2006
• Scion iA Base 2016
• Toyota Echo Base 2000–2005
• Toyota Prius Base 2001–2009
• Toyota Prius Touring 2007–2009
• Toyota Prius C models 2012–2019
• Toyota Yaris models 2007–2020

Installation requires standard engine rebuild procedures. These bearings fit precisely into the connecting rod journals and caps without modification. No special machining or tuning is necessary beyond standard engine assembly practices.

What's Included:

• Complete set of tri-metal copper lead connecting rod bearings sized for Toyota 1NZ-FE / 2NZ-FE engines

Ideal For:

This bearing set is perfect for mechanics, rebuilders, and enthusiasts who want to maintain or improve engine reliability during rebuilds or upgrades. It suits daily drivers, light performance builds, and anyone seeking OEM-level quality with enhanced material properties for longer service life.

King Engine Bearings specializes in engine bearings with a strong footprint in performance and racing, developing advanced bearing materials and designs for high-load engines. Builders and racers rely on King for main and rod bearings engineered to handle higher cylinder pressures and sustained RPM without sacrificing reliability.