What does the +0.50mm sizing mean for this bearing set?

The +0.50mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.50mm (approximately 0.020 inches). This is common during engine rebuilds to clean up wear or previous machining on the crankshaft.

What is the construction of these main bearings?

These main bearings feature a bimetal construction with an aluminum base. This type of bearing material is widely used in performance and everyday engines for its good thermal conductivity and ability to handle lubrication effectively.

Do I need to measure my crankshaft before ordering?

Yes, it is highly recommended to measure your crankshaft journals before ordering any bearing set. This ensures you select the correct size, whether it's standard, or an undersize like the +0.50mm offered here, to achieve proper oil clearance.

Specifications

Brand: King Engine Bearings
Part #: MB5237AM0.5
UPC: 611500242526

King Engine Bearings Mitsubishi 4G12 (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Mitsubishi 4G12 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mitsubishi-4g12-size-0-50mm-main-beari-t14-770581
Price: 52.48 USD
Availability: BackOrder

$52.48

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King Engine Bearings Mitsubishi 4G12 main bearing set. Size +0.50mm. Essential for engine rebuilds needing precise clearances.

Key Features

Fits a wide range of vehicles including Dodge Colt, Eagle Summit, Hyundai Excel, Mitsubishi Mirage, and Plymouth Colt.
Designed for Mitsubishi 4G12 engines.
Main bearing set with a +0.50mm (0.020 inch) undersize.
Constructed with a bimetal aluminum base for reliable performance.
Essential component for engine rebuilding and repair.

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About this part

Product Details

If you're rebuilding the engine in a Dodge Colt, Hyundai Excel, or Mitsubishi Mirage from the late 70s through the mid-90s, getting the crankshaft supported correctly is key. This main bearing set from King Engine Bearings is made for the Mitsubishi 4G12 engine and is sized at +0.50mm, meaning it's intended for crankshaft journals that have been machined down by 0.020 inches to account for wear or previous machining. These bearings are constructed with a bimetal aluminum base, a common and reliable material for engine bearings that helps manage heat and lubrication.

King Engine Bearings is a well-known name in engine components, and this set is designed to provide the proper clearances needed for a healthy engine rebuild. The +0.50mm sizing is crucial; using the wrong size bearing can lead to excessive oil pressure, or worse, insufficient oil pressure which can quickly damage your freshly rebuilt engine. Always confirm your crankshaft journal measurements before ordering bearings to ensure you get the correct size for your specific build.