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. This is common during engine rebuilds to correct wear or damage on the crankshaft journals.

What is the advantage of a bimetal aluminum base construction?

A bimetal construction typically uses a steel backing for strength and an aluminum-based overlay for good conformability and embeddability. This combination helps manage heat and provides a durable surface for the spinning crankshaft.

What other parts are typically replaced when installing main bearings?

When replacing main bearings, it's common practice to also replace the connecting rod bearings (rod bearings) and check the condition of the crankshaft itself. New engine oil and a new oil filter are also essential for proper lubrication and performance.

Specifications

Brand: King Engine Bearings
Part #: MB5269AM0.75
UPC: 611500402678

King Engine Bearings VW/Audi Aku/Aqm/Cr/Cy/Jk/Jr/Ky/Ra (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings VW/Audi Aku/Aqm/Cr/Cy/Jk/Jr/Ky/Ra (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-vw-audi-aku-aqm-cr-cy-jk-jr-ky-ra-size-t14-770613
Price: 35.67 USD
Availability: BackOrder

$35.67

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King Engine Bearings Main Bearing Set for VW/Audi engines, size +0.75mm. A well-built replacement for worn main bearings.

Key Features

Fits Audi A4, A4 Quattro, TT, Volkswagen Beetle, Golf, Jetta, and Passat.
Main bearing set sized at +0.75mm for machined crankshafts.
Constructed with a bimetal aluminum base for good wear and thermal properties.
Designed to support the crankshaft and maintain proper engine oil pressure.

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About this part

Product Details

Built with a bimetal aluminum base, this main bearing set from King Engine Bearings is designed to handle the demands of your engine. Main bearings are critical for supporting the crankshaft and ensuring it spins smoothly within the engine block. When they wear out, you can experience issues like low oil pressure or knocking sounds, so replacing them is key to a healthy engine rebuild.

This set is specifically sized at +0.75mm, meaning it's intended for crankshafts that have been machined to this larger diameter during an engine rebuild. The bimetal construction offers good wear resistance and thermal transfer properties, making it a solid option for many VW and Audi applications. It fits a range of vehicles including the Audi A4, Volkswagen Beetle, and Volkswagen Golf, among others.

If you're rebuilding an engine that requires main bearings with a +0.75mm undersize, this set from King Engine Bearings is a reliable choice to get your engine back in good working order.