ACL 6 Bolt 1st Gen DSM Main Bearing Set Eclipse for 1971-06 Mitsubishi 4G63/4G64

ACL 6 Bolt 1st Gen DSM Main Bearing Set Eclipse for 1971-06 Mitsubishi 4G63/4G64

The ACL 6 Bolt 1st Gen DSM Main Bearing Set is an essential component for any enthusiast or professional performing an engine rebuild on Mitsubishi's renowned 4G63 and 4G64 engines. Engineered for durability, these main bearings are designed to optimize performance, reduce friction, and enhance engine longevity. The manufacturing process employs high-quality materials that offer superior strength while maintaining the necessary tolerances for a perfect fit in precision-engineered engine applications.

As part of the core of your engine assembly, main bearings support the crankshaft and play a critical role in maintaining proper oil film thickness under various load conditions. This set is specifically designed for the 6-bolt configuration commonly found in the first-generation DSM (Diamond Star Motors) models. By ensuring optimal alignment and reducing wear, these bearings allow for smoother operation and better overall engine reliability, which is crucial for high-performance applications.

The advanced technology employed in the formulation of these bearings provides excellent resistance against wear and higher thermal stability. As a result, users can expect a performance boost in terms of horsepower and torque, especially during demanding conditions. The ACL 6 Bolt Main Bearing Set has been carefully constructed to meet or exceed the specifications required for high-output engines, ensuring that you can push your performance without sacrificing reliability.

FITMENT: This main bearing set is compatible with the following Mitsubishi engines: 4G63 and 4G64, used from 1971 to 2006. It is specifically designed for models featuring the 6-bolt crankshaft configuration typical in first-generation DSM applications.

Key Features & Benefits

• Precision-engineered for compatibility with 4G63 and 4G64 engines.
• Enhanced durability through high-quality material construction for extended engine life.
• Optimizes oil clearance for better lubrication and reduced friction.
• Improves overall engine performance, offering increased horsepower and torque capabilities.
• Designed to meet or exceed OEM specifications, ensuring a reliable fit and performance.

Shipping. Free on every order, US only. Orders arrive in 2–4 days.

Returns. 30-day returns, except in extreme cases.

Support. Our team is available 24/7 for fitment mismatches or any other reason.

Warranty. Full manufacturer guarantee.