What does 'extra oil clearance' mean for my engine?

Extra oil clearance means there's a slightly larger gap between the bearing and the crankshaft. This allows for a thicker oil film, which helps protect the components from wear, especially in high-RPM or high-load situations common in performance engines.

Are these bearings suitable for a stock engine rebuild?

These are standard size bearings, meaning they are intended for use with a crankshaft that is still within its original factory specifications. The extra oil clearance is beneficial even for stock engines that are driven hard, but they are specifically designed with performance applications in mind.

What other parts are typically needed for a main bearing replacement?

Replacing main bearings usually involves a full engine teardown. You'll likely need new main bearing bolts, engine assembly lube, oil, coolant, and potentially a crankshaft hone or polish if it shows any signs of wear. Always refer to the manufacturer's service manual for a complete list and procedures.

ACL Hyundai G4KF 2.0T Standard Size High Performance w/ Extra Oil Clearance Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1295HX-STD
UPC: 9315726437339

ACL Hyundai G4KF 2.0T Standard Size High Performance w/ Extra Oil Clearance Main Bearing Set

Name: ACL Hyundai G4KF 2.0T Standard Size High Performance w/ Extra Oil Clearance Main Bearing Set
Brand: ACL
SKU: acl-acl-hyundai-g4kf-2-0t-standard-size-high-performance-w-extra-oil-clearance-m-t14-40752
Price: 261.94 USD
Availability: BackOrder

$261.94

On Backorder — Expected to ship by Apr 16, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits Hyundai Genesis Coupe (2010-2014), Sonata (2011-2013), Kia Forte Koup (2010-2013), Kia Forte (2010-2013), Kia Optima (2011-2013), and Kia Sportage (2011-2013).
Standard size bearings designed for the Hyundai G4KF 2.0T engine.
Features extra oil clearance for improved lubrication and protection under high-performance conditions.
High-performance bearing set from ACL, known for engine components.
Includes a full set of main bearings for a complete engine rebuild.

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Will this fit your vehicle?

Product Details

You get a full set of main bearings with extra oil clearance in this kit, which means you're ready to rebuild your engine with a focus on performance and durability. These ACL bearings are specifically made for the Hyundai G4KF 2.0T engine, found in popular models like the Genesis Coupe, Sonata, and Kia Optima. When you're pushing your engine harder, whether it's for track days or just spirited driving, having the right internal components is key to keeping it running smoothly and reliably.

ACL has been around for a while, and they build these bearings to handle the extra stress that comes with a high-performance engine. The 'HX' in the part number signifies their high-performance line, and the extra oil clearance is a smart move for engines that see higher RPMs or are tuned for more power. This extra space allows for a slightly thicker oil film, which helps protect the crankshaft and bearings under heavy load and heat. They are standard size, so they're meant to be used with a crankshaft that's still within factory specifications.

When you're doing an engine rebuild, especially for a performance application, getting the bearing clearances right is critical. These ACL bearings give you a bit more forgiveness in that department. Make sure to follow the manufacturer's installation instructions carefully, as proper assembly and torque are essential for engine longevity.