What does the +0.75mm sizing mean for these bearings?

The +0.75mm sizing indicates that these bearings are intended for use when the engine's crankshaft has been machined to be 0.75mm larger in diameter than its original size. This is common during engine rebuilds to account for wear or to true up the crank journals.

What is the advantage of a bimetal aluminum silicon base?

A bimetal construction with an aluminum silicon base offers a good combination of strength and the ability to conform to the crankshaft surface. This helps in maintaining consistent oil film and reducing friction, which is essential for engine longevity.

Do these bearings come with installation hardware?

This product is a main bearing set and typically includes only the main bearings themselves. It does not usually come with additional hardware like main cap bolts or oil seals, which should be sourced separately if needed.

Specifications

Brand: King Engine Bearings
Part #: MB5661SI0.75
UPC: 611500536946

King Engine Bearings Audi/VW Adz/Awt/Apk/Bhp/Bpy/Aks (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings Audi/VW Adz/Awt/Apk/Bhp/Bpy/Aks (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-audi-vw-adz-awt-apk-bhp-bpy-aks-size-0-t14-770893
Price: 35.88 USD
Availability: BackOrder

$35.88

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King Engine Bearings main bearing set for Audi/VW. Features a bimetal aluminum silicon base for durability. Size +0.75mm.

Key Features

Fits a wide range of Audi and Volkswagen vehicles with ADZ, AWT, APK, BHP, BPY, AKS engines.
Features a bimetal construction with an aluminum silicon base for durability.
Main bearing set is sized +0.75mm for use with a machined crankshaft.
Supports the crankshaft and maintains proper oil clearance within the engine block.

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About this part

Product Details

Built with a bimetal aluminum silicon base, this main bearing set from King Engine Bearings is designed for a range of Audi and Volkswagen engines, including models like the A4, Jetta, and Beetle. These bearings are crucial for supporting the crankshaft within the engine block, ensuring smooth rotation and proper oil clearance. This specific set is sized +0.75mm, meaning it's intended for crankshafts that have been machined to a larger diameter, often during an engine rebuild to correct wear or damage.

The bimetal construction offers a good balance of strength and conformability, allowing the bearing to adapt slightly to the crankshaft surface while maintaining its structural integrity. This helps to create a consistent oil film between the bearing and the crank, reducing friction and wear. King Engine Bearings is a well-known name in engine components, and this set is a solid option for rebuilding or repairing your Audi or VW engine.

When installing bearings sized for an undersize or oversize crank, it's important to ensure the crankshaft has been properly machined and cleaned. Always refer to the manufacturer's service manual for the correct installation procedures and torque specifications for your specific vehicle.