What does the '+0.25mm' size mean for these bearings?

The '+0.25mm' indicates that these bearings are 0.25mm undersize compared to the standard factory size. This is typically used when the engine's crankshaft journals have been machined down to a smaller diameter during an engine rebuild to remove wear or damage.

What is the construction of these main bearings?

These main bearings feature a bimetal construction, which means they have an aluminum base. This type of bearing is chosen for its good load-carrying capacity and heat dissipation properties in engine applications.

What engine codes are covered by this bearing set?

This specific main bearing set is designed to fit Audi engines with the following codes: AAN, AAR, AAT, RT, HY, and NG. Always confirm your engine code before ordering.

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Specifications

Brand: King Engine Bearings
Part #: MB601AM0.25
UPC: 611500175718

King Engine Bearings Audi Aan/Aar/Aat/Rt/Hy/Ng (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Audi Aan/Aar/Aat/Rt/Hy/Ng (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-audi-aan-aar-aat-rt-hy-ng-size-0-25mm--t14-771049
Price: 65.69 USD
Availability: BackOrder

$65.69

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Fits 1979-1981 Audi 5000. King Engine Bearings main bearing set, 0.25mm undersize, for AAN/AAR/AAT/RT/HY/NG engines.

Key Features

Fits 1979-1981 Audi 5000.
Main bearing set for Audi AAN, AAR, AAT, RT, HY, NG engines.
Bearings are 0.25mm undersize.
Constructed with a bimetal (aluminum base) design.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine bearings. If you're rebuilding the bottom end of your 1979-1981 Audi 5000, this main bearing set is a key component to get your engine running right.

This set is built with a bimetal construction, using an aluminum base. This design helps manage heat and wear in the crankshaft journals. These bearings are sized 0.25mm undersize, which is important if your crankshaft has been machined to a smaller diameter during a rebuild. Make sure to check your crankshaft's specifications to confirm the correct bearing size needed.