What does 0.50 oversized mean for these bearings?

This means the bearings are manufactured to be slightly larger than standard size. This is typically used when the engine's crankshaft journals have been machined down (ground undersize) during a rebuild. You must match the bearing size to the crankshaft journal size.

What is the Manganx material?

Manganx is a strengthened aluminum alloy used by King Engine Bearings. It's part of their bi-metal construction, designed to offer durability and reliable performance for engine bearings.

Are these bearings environmentally safe?

Yes, the manufacturer states that the composite material used in these bearings is lead-free and environmentally safe.

King Engine Bearings BMW B58B30A (Size 0.50 Oversized) Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB7779SM0.5
UPC: 611500591501

King Engine Bearings BMW B58B30A (Size 0.50 Oversized) Main Bearing Set

Name: King Engine Bearings BMW B58B30A (Size 0.50 Oversized) Main Bearing Set
Brand: King Engine Bearings
Price: 68.06 USD
Availability: InStock

$68.06

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King Engine Bearings main bearing set for BMW B58B30A engines. Size 0.50 oversized. Built with Manganx strengthened aluminum.

Key Features

Fits BMW B58B30A engines, 0.50 oversized.
Constructed with Manganx strengthened aluminum alloy.
Bi-metal aluminum material.
Lead-free and environmentally safe composite.
Specialized main bearing set from a bearing specialist.

⚠️ 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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Will this fit your vehicle?

Product Details

Built with a Manganx strengthened aluminum alloy, this main bearing set from King Engine Bearings is designed for BMW B58B30A engines. These bearings are 0.50 oversized, which is important to consider when rebuilding or servicing your engine. King specializes in bearings, focusing on supplying well-built components for engine builds.

The Manganx material offers a bi-metal aluminum construction that is lead-free and environmentally safe. This construction aims to provide durability and reliable performance for the critical main bearing journals. When you're working on an engine that requires precise tolerances, using bearings from a specialist like King can make a notable difference.

This set fits a wide range of BMW models equipped with the B58B30A engine, including vehicles like the 340i, 540i, and X5. Always ensure you have the correct oversized specification for your crankshaft before installation.