What does 'STD' size mean for these main bearings?

STD stands for standard size. This means the bearings are designed to fit a crankshaft that is still within its original factory specifications. If your crankshaft has been machined undersize, you will need a different bearing size.

What is the PMaxBlack coating used for?

The PMaxBlack coating is a feature that enhances the bearing's ability to handle higher loads. It helps ensure the bearing surface can withstand the pressures generated during engine operation, especially in performance applications.

What is the benefit of the Radialock design?

The Radialock design helps the bearing achieve the correct 'crush height' when installed. Proper crush is essential for the bearing to seat correctly in the engine block or connecting rod, ensuring it stays in place and maintains proper oil clearance.

Specifications

Brand: King Engine Bearings
Part #: MB511XP
UPC: 611500559433

King Alfa Romeo Alfetta/Giulia/Spider/Sport/Sprint (Size STD) Performance Main Bearing Set

Name: King Alfa Romeo Alfetta/Giulia/Spider/Sport/Sprint (Size STD) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-alfa-romeo-alfetta-giulia-spider-sport-sprint-size-std-t14-4359595
Price: 199.78 USD
Availability: BackOrder

$199.78

On Backorder

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

King Alfa Romeo Alfetta/Giulia/Spider/Sport/Sprint (Size STD) Performance Main Bearing Set. Built with tri-metal copper-based material for improved load capacity.

Key Features

Fits Alfa Romeo Alfetta, Giulia, Spider, Sport, and Sprint models.
Standard (STD) size for factory-spec crankshafts.
Features PMaxBlack for superior load capacity.
Includes Radialock design for optimal crush height.
Constructed with a tri-metal copper-based material.

⚠️ 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

If you're rebuilding the engine in your Alfa Romeo Alfetta, Giulia, Spider, Sport, or Sprint, a solid set of main bearings is crucial. These King Performance Main Bearings are built specifically for these classic Alfas, ensuring your engine's crankshaft is properly supported and lubricated. They are designed to handle the demands of performance applications, offering a well-built foundation for your engine build.

King Engine Bearings specializes in creating robust engine bearings, and this set uses a tri-metal copper-based material that's known for its strength and ability to handle significant loads. The PMaxBlack coating further enhances their capacity to manage pressure, while the Radialock design helps achieve the optimal crush height during installation, which is key for proper seating and oil flow. These features work together to provide a durable and reliable bearing surface for your crankshaft.

This set is for standard (STD) size applications, meaning it's intended for crankshafts that are still within their original factory specifications. If your crankshaft has been machined undersize due to wear or previous repairs, you would need a different size bearing. Always confirm your crankshaft dimensions before ordering bearings to ensure a proper fit and function for your engine rebuild.