King Engine Bearings Bi-Metal Aluminum Main Bearing Set

2004–2006 Scion xA / 2004–2006 Scion xB / 2016 Scion iA with Toyota 1NZ-FE / 2NZ-FE Engines

MB5394AM

Overview:

The King Engine Bearings Bi-Metal Aluminum Main Bearing Set is engineered specifically for Toyota and Scion models equipped with the 1NZ-FE and 2NZ-FE engines. This main bearing set features a durable bimetal construction with an aluminum base, designed to provide reliable performance and enhanced engine protection. Ideal for daily drivers and enthusiasts alike, these bearings help maintain engine integrity under normal and elevated operating conditions.

Whether you are performing routine maintenance or rebuilding your engine, this main bearing set offers a high-quality solution that meets or exceeds OEM standards. It is a trusted choice for owners of Scion xA, xB, and iA models from the specified years, ensuring proper fitment and long-lasting durability.

Key Features:

This main bearing set combines advanced materials and precise manufacturing to deliver dependable engine support:

• Bimetal construction with an aluminum base for optimal strength and wear resistance.
• Designed specifically for Toyota 1NZ-FE and 2NZ-FE engines, ensuring exact fitment and compatibility.
• Manufactured to meet or exceed OEM specifications for durability and performance.
• Provides excellent load-carrying capacity to support crankshaft rotation and reduce friction.
• Precision machining ensures consistent clearances for reliable oil film formation and engine longevity.
• Ideal for engine rebuilds, repairs, or upgrades requiring main bearing replacement.

Construction & Design:

The King Engine Bearings main bearing set features a bimetal design with an aluminum base layer that offers a balance of strength and flexibility. This construction helps absorb engine vibrations and thermal expansion while maintaining a smooth surface for crankshaft rotation. The aluminum base provides excellent heat dissipation, reducing the risk of bearing failure under demanding conditions.

Each bearing is precision-machined to tight tolerances, ensuring proper oil clearance and fitment. This attention to detail supports consistent oil film formation, which is critical for minimizing wear and extending engine life. The bimetal design also enhances resistance to fatigue and scoring, making these bearings a reliable choice for both stock and mildly modified engines.

Installation & Fitment:

This main bearing set is a direct replacement for factory bearings in compatible Toyota and Scion engines. It installs using standard procedures during engine rebuilds or repairs and fits the following models and years:

• 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 (various trims) 2012–2019
• Toyota Yaris (various trims) 2007–2020

No modifications to the engine block or crankshaft are required when installing this bearing set. It is designed for straightforward replacement using OEM procedures and tools.

What's Included:

• Complete set of bi-metal aluminum main bearings for Toyota 1NZ-FE / 2NZ-FE engines

Ideal For:

This main bearing set is ideal for:

• Owners performing engine rebuilds or overhauls on compatible Toyota and Scion models.
• Technicians seeking reliable, OEM-quality main bearings for maintenance or repair.
• Enthusiasts looking to maintain engine durability and performance in daily-driven vehicles.
• Anyone requiring a direct-fit bearing set engineered for the 1NZ-FE and 2NZ-FE engines.

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.