What does the STDX sizing mean for these bearings?

The STDX designation indicates a specific undersize for the main bearings. This sizing is crucial for proper clearance and oil film thickness within the engine's crankshaft journals. Always confirm the required bearing size for your specific engine build before ordering.

What is PMaxBlack technology?

PMaxBlack is a proprietary technology developed by King Engine Bearings. It's designed to enhance the bearing's ability to withstand higher loads, making it suitable for performance applications or engines that experience significant stress.

What is the benefit of the Radialock feature?

The Radialock feature is designed to help maintain the correct crush height of the bearing. Proper crush height is essential for ensuring the bearing stays securely in place within its housing and maintains optimal oil clearance.

King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size STDX) Performance Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB5280XPSTDX
UPC: 611500567490

King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size STDX) Performance Main Bearing Set

Name: King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size STDX) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-prod-v8-4-6l-5-4l-size-stdx-perfo-t14-260682
Price: 167.94 USD
Availability: BackOrder

$167.94

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 main bearing set for Ford 4.6L/5.4L V8 engines. Features PMaxBlack for superior load capacity.

Key Features

Fits a wide range of Ford, Lincoln, and Avanti vehicles with 4.6L and 5.4L V8 engines.
Features King's PMaxBlack technology for superior load capacity.
Includes Radialock feature for optimal crush height.
Constructed with a tri-metal copper-based material for durability.
This is a performance main bearing set, sized STDX.

⚠️ 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

King Engine Bearings has been specializing in engine bearings since 1960, focusing on supplying the highest quality bearings available. This performance main bearing set, part number MB5280XPSTDX, is built for Ford V8 engines with 4.6L or 5.4L displacements. It's a solid option for rebuilding or upgrading the bottom end of a wide range of Ford, Lincoln, and even Avanti vehicles, including popular models like the Ford Crown Victoria, Expedition, and Mustang.

This bearing set utilizes King's PMaxBlack technology, which is designed to handle superior load capacity, making it a strong choice for engines that see demanding use. The Radialock feature helps ensure optimal crush height, a critical factor for proper bearing seating and performance. The tri-metal copper-based material offers a well-built foundation for reliable engine operation under various conditions.

When rebuilding your Ford V8, using a well-made main bearing set like this from King Engine Bearings is essential for ensuring the longevity and performance of your engine. This set is specifically sized STDX, so be sure to confirm this is the correct size for your engine build.