ACL Standard Main Bearing Set w/ Extra Oil Clearance

Fits 1988–1994 BMW E30 316i and 1990–1994 BMW E36 316i

Part #: 5M1538HX-STD

Overview

The ACL Standard Main Bearing Set with Extra Oil Clearance is a high-quality engine component designed to support the reliable operation of your BMW's engine. Crafted with precision engineering and premium materials, these bearings are ideal for enthusiasts and professionals seeking durable, high-performance engine parts. They help maintain optimal oil flow and clearance, ensuring your engine runs smoothly under various driving conditions, especially at higher RPMs. Whether you're rebuilding or upgrading your engine, this bearing set provides the foundation for long-lasting performance and engine longevity.

Key Features

Designed with advanced metallurgy and engineering, these main bearings offer consistent performance and durability. The set features extra oil clearance to enhance lubrication and heat dissipation, supporting engine reliability during demanding driving scenarios. Made from high-quality tri-metal materials, these bearings resist wear and deformation, ensuring a tight fit and stable operation. The precise manufacturing process guarantees compatibility with your BMW's engine specifications, making installation straightforward and secure.

Construction & Design

These main bearings are constructed from a tri-metal alloy, combining steel backing with a layer of copper and aluminum, providing excellent wear resistance and thermal stability. The design incorporates engineered oil clearance to optimize lubrication, reduce friction, and extend engine life. The bearings are machined to exact specifications to ensure a perfect fit within your engine block, supporting consistent performance and reducing the risk of engine damage.

Performance & Response

By supporting proper oil flow and reducing metal-to-metal contact, these bearings help maintain engine responsiveness and smooth operation. They are designed to withstand higher RPM conditions, making them suitable for performance applications or extended driving periods. The enhanced oil clearance contributes to quieter engine operation and improved heat management, supporting your vehicle’s overall performance and durability.

Installation & Fitment

These bearings are engineered for direct replacement in compatible BMW engines from the specified years. Proper installation requires standard engine rebuild procedures, including cleaning and precise measurement of bearing clearances. It is recommended to follow manufacturer guidelines or consult a professional mechanic for optimal results.

What’s Included

The package includes a complete set of main bearings with extra oil clearance, designed to fit the specified BMW models and engine configurations. Hardware or additional components are not included.

Ideal For

Perfect for engine rebuilds, performance upgrades, or restoring older BMW models to ensure reliable operation and longevity. Suitable for enthusiasts seeking high-quality, affordable engine bearings that support higher RPM and demanding driving conditions.