What does 'undersize' mean for these bearings?

An undersize bearing, like this 0.010 inch set, is used when the crankshaft journals have been machined down. This is typically done to correct wear or damage on the original crankshaft, bringing it back to a usable surface for new bearings.

What is the main function of crankshaft main bearings?

Crankshaft main bearings support the crankshaft within the engine block, allowing it to rotate smoothly. They also absorb the thrust forces generated during engine operation, helping to keep the crankshaft properly aligned.

Are these bearings sold individually or as a set?

This product is a crankshaft main bearing set, meaning it includes all the necessary bearings to replace the main bearings for the crankshaft in your engine. It is designed for a complete replacement of the main bearing positions.

Specifications

Brand: ACL
Part #: 5M8596A-.25

ACL Hyundai G4KC (Theta) 2359cc InLine4 DOHC 4v Engine Crankshaft Main Bearing Set

Name: ACL Hyundai G4KC (Theta) 2359cc InLine4 DOHC 4v Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-hyundai-g4kc-theta-2359cc-inline4-dohc-4v-engine-crankshaft-main-bearing-t14-630460
Price: 20.22 USD
Availability: BackOrder

$20.22

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ACL main bearing set for Hyundai G4KC (Theta) 2359cc engines. Undersize 0.010 inch.

Key Features

Fits Hyundai Genesis Coupe (2010-2012), Sonata (2011-2013), Kia Forte Koup (2010-2013), Forte (2010-2013), Optima (2011-2013), and Sportage (2011-2013).
Designed for G4KC (Theta) 2359cc Inline-4 DOHC 4-valve engines.
Main bearing set is 0.010 inch undersize for use with machined crankshaft journals.
Well-built by ACL, a long-standing manufacturer of engine bearings.

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About this part

Product Details

ACL has been making engine bearings for decades, and this crankshaft main bearing set for your Hyundai or Kia is one of their staples. This set is specifically sized at 0.010 inches undersize, meaning it's meant to be used when the crankshaft journals have been machined down to compensate for wear. These bearings are crucial for proper engine function, providing a low-friction surface between the rotating crankshaft and the engine block to support the crankshaft's weight and absorb thrust forces.

This particular set is built for the G4KC (Theta) 2359cc Inline-4 DOHC 4-valve engine found in various Hyundai and Kia models. ACL uses well-built materials to ensure durability and consistent performance, which is essential for the high-stress environment inside an engine. When you're rebuilding an engine or addressing bottom-end noise, using the correct size and a reputable brand like ACL helps ensure a long-lasting repair.

When installing these bearings, it's important to follow the manufacturer's lubrication and clearance specifications. Cleanliness is also paramount during engine assembly to prevent premature wear. This set is designed to fit right into the specified Hyundai and Kia applications, making it a solid option for your engine build.