ACL Main Bearing Set

Fits 2003–2023 Toyota 4Runner, 2005–2015 Tacoma, 2003–2013 Tundra with 1GR-FE V6 Engine

Part #: 4M8263H-.25

Overview

The ACL .25mm Oversized High Performance Main Bearing Set is engineered for Toyota vehicles equipped with the 1GR-FE V6 engine, including the 4Runner, Tacoma, and Tundra models spanning from 2003 to 2023. Designed for high-performance applications and engine rebuilds, this bearing set helps ensure optimal engine stability, durability, and smooth operation under demanding conditions. Whether you're restoring a stock engine or building a performance-oriented setup, these bearings provide the reliability and precision needed for extended engine life. This set is ideal for enthusiasts and professional mechanics seeking to enhance engine longevity and performance. The .25mm oversized design supports engine rebuilds that require bearing clearance adjustments, helping maintain proper oil clearance and reducing wear over time. Crafted with high-quality materials, these bearings are built to withstand high temperatures and pressures, making them suitable for both daily driving and performance use.

Key Features

This high-performance main bearing set offers several key benefits:

• Manufactured from durable, high-quality bearing materials for long-lasting wear resistance
• Precisely engineered to support .25mm oversize crankshaft journals for optimal fitment
• Designed to improve engine stability and reduce the risk of bearing failure
• Supports high-temperature operation and maintains consistent oil clearance
• Engineered for easy installation during engine rebuilds or repairs
• Compatible with a range of Toyota trucks and SUVs equipped with the 1GR-FE V6 engine

Construction & Design

These main bearings are crafted with advanced materials and precision machining to ensure a perfect fit and reliable performance. The bearings feature a robust construction designed to handle the stresses of high-performance driving and extended engine operation, providing excellent heat dissipation and wear resistance.

Installation & Fitment

Designed for straightforward installation during engine rebuilds, these bearings require proper clearance measurement and fitting. It is recommended to follow manufacturer specifications and torque settings for optimal results.

What’s Included

This set includes all necessary main bearings for the engine rebuild, ensuring comprehensive coverage for the crankshaft journals. Hardware or additional components are not included and should be sourced separately if needed.

Ideal For

This product is perfect for automotive enthusiasts, professional rebuilders, and mechanics aiming to restore or enhance the performance and durability of their Toyota 1GR-FE V6 engine. It is especially suitable for high-mileage engines requiring oversize bearings or performance upgrades.