What is the main purpose of main bearings?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while handling the forces generated during combustion.

What does 'STD' size mean for these bearings?

STD refers to the standard size bearing. This means it's designed to fit a crankshaft and main housing that have not been machined or modified from their original factory specifications.

Are these bearings suitable for high-performance engines?

These bearings are designed for medium-load engines. For high-performance or racing applications, you may need to consult King Engine Bearings' performance series bearings.

Specifications

Brand: King Engine Bearings
Part #: MB5661SI
UPC: 611500536915

King Engine Bearings Volkswagen AMB/BYK/BBX Silicon Bi-Metal Aluminum Main Bearing Set - Size STD

Name: King Engine Bearings Volkswagen AMB/BYK/BBX Silicon Bi-Metal Aluminum Main Bearing Set - Size STD
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-volkswagen-amb-byk-bbx-silicon-bi-meta-t14-4375039
Price: 35.88 USD
Availability: InStock

$35.88

Only 6 left in stock

King Engine Bearings main bearing set for Audi and VW. Silicon bi-metal aluminum construction for medium-load engines.

Key Features

Fits 14+ vehicle make/model combinations including Audi A3, A4, TT, and Volkswagen Beetle, Jetta, Passat.
Silicon bi-metal aluminum construction.
Standard (STD) size.
Designed for medium-load engines.
Lead-free and environmentally safe composite.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

King Engine Bearings has been specializing in making top-notch bearings since 1960, focusing on supplying the best available. This main bearing set, part number MB5661SI, is built with a silicon bi-metal aluminum material. It's a standard size set designed for medium-load engines, fitting a wide range of Audi and Volkswagen models like the Audi A3, Volkswagen Jetta, and Audi TT.

The bi-metal aluminum construction offers a good balance for everyday driving conditions. This set is also lead-free, making it an environmentally safer choice. It's a well-built component for rebuilding or repairing your engine's bottom end.