What does the 0.5mm undersize mean for my engine?

An undersize bearing, like this 0.5mm set, is used when the engine's crankshaft has been machined down to correct for wear or damage. The bearing is made slightly larger to compensate, ensuring the correct clearance between the bearing and the crankshaft.

What is the pmax black racing line?

The pmax black racing line from King Engine Bearings features a tri-metal construction with a special coating. This design is intended to handle higher loads and temperatures, making it suitable for performance applications.

Do these bearings come with installation instructions?

While specific installation instructions are not included, it is recommended to follow the manufacturer's service manual for your specific vehicle. This typically involves ensuring proper crankshaft journal preparation and checking oil clearances with Plastigage.

Specifications

Brand: King Engine Bearings
Part #: MB5566XP0.5
UPC: 611500559365

King Engine Bearings Audi A4 1.8L AEB (Size 0.5) Performance Main Bearing Set

Name: King Engine Bearings Audi A4 1.8L AEB (Size 0.5) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-audi-a4-1-8l-aeb-size-0-5-performance--t14-364866
Price: 81.97 USD
Availability: BackOrder

$81.97

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King Engine Bearings performance main bearing set for Audi and VW 1.8L AEB engines. Size 0.5mm undersize.

Key Features

Fits a wide range of Audi and Volkswagen vehicles with 1.8L AEB engines.
This is a 0.5mm undersize main bearing set, intended for use with a machined crankshaft.
Features King's pmax black racing line construction with a tri-metal material.
Designed for improved performance and durability under higher loads and temperatures.

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Will this fit your vehicle?

About this part

Product Details

If you're rebuilding the bottom end of your Audi or VW 1.8L AEB engine, a solid set of main bearings is crucial for keeping everything running smoothly. This set from King Engine Bearings is their pmax black racing line, meaning they're built for demanding use. They are a 0.5mm undersize, which is important if you're dealing with a worn crankshaft that's been machined to match.

These bearings are constructed with a tri-metal material, offering good durability and performance. The pmax black coating is designed to handle higher loads and temperatures, making them a popular choice for builds that see spirited driving or track time. They fit a range of vehicles, including many Audi A4 and Volkswagen Golf and Jetta models from the 1980s through the early 2000s.

When installing these bearings, make sure your crankshaft journals are clean and properly machined to the 0.5mm undersize specification. It's also a good idea to check your oil clearances with Plastigage to ensure they fall within the manufacturer's recommended range for optimal engine health.