ACL Main Bearings

2020 Toyota GR Supra Inline 6 3.0L

7M1512H-STD

Overview:

The ACL Main Bearing Set is engineered specifically for the Toyota GR Supra 2020 model equipped with the BMW B58B30 and S58B30 3.0L inline 6-cylinder engines. Designed to meet or exceed OEM specifications, these standard size main bearings provide reliable support for the crankshaft, ensuring smooth engine operation and longevity. Ideal for enthusiasts and professional mechanics alike, this bearing set offers a durable solution for engine rebuilds, maintenance, or performance upgrades.

Whether you are restoring your Supra to factory condition or preparing it for spirited driving, ACL main bearings deliver consistent performance and protection under demanding conditions. Their precision manufacturing helps maintain optimal oil clearance and reduce friction, contributing to engine efficiency and durability.

Key Features:

ACL main bearings are crafted with advanced materials and manufacturing techniques to provide dependable engine support. Key features include:

• Precision-engineered to OEM standard dimensions for perfect fitment
• Constructed from high-quality bearing alloys for enhanced wear resistance
• Designed to maintain optimal oil clearance for effective lubrication
• Compatible with BMW B58B30 and S58B30 3.0L inline 6 engines used in the 2020 Toyota GR Supra
• Standard size bearings suitable for engines without crankshaft resizing
• Manufactured under strict quality control to ensure durability and reliability
• Ideal for engine rebuilds, repairs, and performance maintenance

Construction & Design:

ACL main bearings are constructed using premium bearing alloys that balance strength, fatigue resistance, and conformability. The materials are selected to withstand high loads and temperatures typical of modern turbocharged inline 6 engines. The bearing shells feature a smooth surface finish to minimize friction and wear, while maintaining proper oil film thickness for effective lubrication.

Each bearing is precision machined to exact tolerances, ensuring consistent oil clearance and alignment with the crankshaft journals. This meticulous engineering reduces the risk of premature bearing failure and contributes to overall engine reliability.

Installation & Fitment:

These main bearings are designed for direct replacement in the 2020 Toyota GR Supra with the BMW B58B30 or S58B30 3.0L inline 6 engine. Installation requires standard engine disassembly procedures, including removal of the crankshaft main caps. No modifications are necessary when using these standard size bearings, provided the crankshaft journals are within factory specifications.

Proper installation includes cleaning all mating surfaces, checking crankshaft journal condition, and applying assembly lubricant to ensure optimal bearing performance from initial startup. It is recommended to follow the vehicle manufacturer’s torque specifications and assembly procedures during installation.

What's Included:

• Complete set of standard size main bearings for BMW B58B30 and S58B30 3.0L inline 6 engines

Ideal For:

This ACL main bearing set is ideal for Toyota GR Supra 2020 owners performing engine rebuilds, maintenance, or upgrades. It suits professional engine builders, performance enthusiasts, and mechanics seeking reliable, OEM-quality bearings to ensure smooth crankshaft operation and engine longevity.

ACL Race Series is known for performance engine bearings used across motorsports, with rod and main bearing options engineered for durability under high load and heat. Their positioning centers on racing-focused design, metallurgy, and engineering intended to stand up to demanding competition engines.