What does '.5mm undersize' mean for these bearings?

This means the bearings are slightly smaller than standard size. They are designed to be used when the crankshaft journals have been machined down by 0.5mm to account for wear or to achieve specific engine clearances during a rebuild.

What is the Manganx material?

Manganx is a proprietary strengthening process used by King Engine Bearings on their aluminum alloy. It helps to improve the durability and load-carrying capacity of the bearing material.

Are these bearings suitable for a stock engine rebuild?

These bearings are a .5mm undersize, which means they are intended for engines where the crankshaft has been machined to that specific size. If your crankshaft is still at standard size, you would need a standard size bearing set.

Specifications

Brand: King Engine Bearings
Part #: CR4590SM0.5
UPC: 611500587436

King Engine Bearings Volkswagen AMB/BYK/BBX (Size .5mm) Performance Rod Bearing Set

Name: King Engine Bearings Volkswagen AMB/BYK/BBX (Size .5mm) Performance Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-volkswagen-amb-byk-bbx-size-5mm-perfor-t14-714407
Price: 73.34 USD
Availability: BackOrder

$73.34

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Engine Bearings performance rod bearing set for Audi and Volkswagen engines. .5mm undersize.

Key Features

Fits a range of Audi and Volkswagen engines, including AMB, BYK, and BBX.
Features a lead-free composite material that is environmentally safe.
Includes a Manganx strengthened aluminum layer for improved durability.
Constructed with a bi-metal aluminum material.
This set is .5mm undersize, intended for use with a machined crankshaft.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

If you're rebuilding the bottom end of your Audi or Volkswagen engine, getting the right connecting rod bearings is crucial for long-term health. This set from King Engine Bearings is built with a lead-free composite material that's environmentally safe, and it features a Manganx strengthened aluminum layer for improved durability. These bearings are a .5mm undersize, meaning they're designed to be used with crankshafts that have been machined down by that amount to correct for wear or to achieve specific clearances.

King specializes in bearings, and this set reflects that focus. The bi-metal aluminum construction offers a solid foundation for your engine's rotating assembly. They are designed to fit a range of popular Audi and Volkswagen models, including the Audi A3, A4, and TT, as well as the Volkswagen Eos, GTI, and Jetta. Ensure your crankshaft has been properly machined to a 0.5mm undersize before installing these bearings for optimal performance and longevity.