What does the 0.25mm undersize mean for my engine rebuild?

The 0.25mm undersize indicates that these bearings are designed to be used when the crankshaft journals have been machined down by 0.25mm. This is a common practice during engine rebuilding to clean up worn or damaged surfaces and restore proper clearances.

What is the King XP performance overlay?

The XP performance overlay is a specialized material used by King Engine Bearings. It's known for being tougher and more resistant to wear compared to standard bearing materials, offering improved durability for performance or rebuilt engines.

Do these bearings come with new main bolts?

This product is a main bearing set and typically does not include new main cap bolts. It is recommended to consult the manufacturer's specifications for your engine to determine if new main cap bolts are required for your rebuild and to obtain the correct torque specifications.

Specifications

Brand: King Engine Bearings
Part #: MB5566XPC0.25
UPC: 611500622083

King Engine Bearings Audi/VW ABL/ ADY/ AHH/ AKS (Size 0.25) Main Bearing Set

Name: King Engine Bearings Audi/VW ABL/ ADY/ AHH/ AKS (Size 0.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-audi-vw-abl-ady-ahh-aks-size-0-25-main-t14-432468
Price: 168.86 USD
Availability: BackOrder

$168.86

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King Engine Bearings Main Bearing Set MB5566XPC0.25 for Audi/VW ABL/ADY/AHH/AKS engines. These are 0.25mm undersize for rebuilding.

Key Features

Main bearing set for Audi/VW ABL, ADY, AHH, and AKS engines.
0.25mm undersize for use with a machined crankshaft.
Features King's XP performance overlay for improved wear resistance.
Designed for proper oil clearance and crankshaft support.

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About this part

Product Details

If you're rebuilding the bottom end of your Audi or VW with an ABL, ADY, AHH, or AKS engine, getting the main bearings right is crucial for a healthy rebuild. This set from King Engine Bearings is designed to be a direct fit for those specific applications, ensuring proper oil clearance and support for your crankshaft.

These main bearings are manufactured to King's XP performance standard, which means they use a specialized overlay material that's tougher and more resistant to wear than standard bearings. They are also 0.25mm undersize, which is important if your crankshaft has been machined down to match this size during the rebuild process. Getting the right bearing size is key to maintaining the correct oil pressure and ensuring the longevity of your engine's rotating assembly.

When you're putting an engine back together, every component matters. King has a solid reputation for making well-built bearings, and this set is no exception. Make sure you have the correct service manual for your specific engine to confirm the installation procedure and any required clearances.