What does the '+0.75mm' size mean for these bearings?

The '+0.75mm' indicates that these bearings are designed to fit crankshaft journals that have been machined undersize by 0.75mm. This is common when repairing worn or damaged crankshafts to ensure proper oil clearance and fit.

What are these bearings made of?

These bearings feature a bimetal construction with an aluminum silicon base. This material is selected for its ability to handle significant loads and resist wear in demanding engine conditions.

Do I need to machine my crankshaft to use these bearings?

Yes, if your crankshaft journals have wear or damage, they typically need to be machined to a specific undersize, such as +0.75mm, to be compatible with these bearings. Always consult your engine's service manual for proper machining specifications.

Specifications

Brand: King Engine Bearings
Part #: CR6778SI0.75
UPC: 611500475191

King Engine Bearings Audi Acz/Aah/Ack/Aej/Asn/Ltr (Size +0.75mm) Connecting Rod Bearing Set

Name: King Engine Bearings Audi Acz/Aah/Ack/Aej/Asn/Ltr (Size +0.75mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-audi-acz-aah-ack-aej-asn-ltr-size-0-75-t14-770076
Price: 56.51 USD
Availability: BackOrder

$56.51

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Fits 1997-2005 Audi A4. King Engine Bearings connecting rod bearing set, size +0.75mm, for engine rebuilds.

Key Features

Fits 1997-2005 Audi A4.
Connecting rod bearing set for engine rebuilding.
Size is +0.75mm, designed for machined crankshaft journals.
Constructed with a bimetal, aluminum silicon base for durability.
Designed for Audi engine codes ACZ, AAH, ACK, AEJ, ASN, LTR.

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About this part

Product Details

If you're rebuilding the engine in your 1997-2005 Audi A4, especially if you're dealing with worn connecting rod journals, a set of precision-sized bearings like these from King Engine Bearings is essential. These are connecting rod bearings, which sit between the crankshaft and the connecting rod, allowing them to rotate smoothly while handling the forces of combustion. This specific set is sized +0.75mm, meaning it's designed to fit crankshaft journals that have been machined down by 0.75mm to clean up wear or damage.

King Engine Bearings uses a bimetal construction with an aluminum silicon base. This material is chosen for its good load-carrying capacity and wear resistance, which is crucial for the high-stress environment inside an engine. The +0.75mm sizing is important because it ensures a proper oil clearance when used with a crankshaft that has been machined to that specific undersize. Getting the oil clearance just right is key to proper lubrication and preventing premature wear on both the bearings and the crankshaft.

When you're rebuilding an engine, using bearings that are precisely sized for the machined crankshaft journals is critical. These King bearings are made to fit specific Audi engine codes like ACZ, AAH, ACK, AEJ, ASN, and LTR, ensuring they are the correct shape and size for those applications.