What does the 0.50mm undersize mean for these bearings?

The 0.50mm undersize indicates that these bearings are slightly smaller than standard size. This is necessary when the engine's crankshaft has been machined down by 0.50mm to correct for wear or damage. Using the correct undersize bearing ensures a proper fit and optimal oil clearance.

What is the 'pmax Black racing line' construction?

The pmax Black racing line refers to King's advanced tri-metal bearing material. This construction is engineered for high-performance applications, offering enhanced durability and superior friction reduction compared to standard bearings, especially under high loads and temperatures.

Are these bearings suitable for a daily driver or only race cars?

While part of King's racing line, these bearings offer improved durability and performance that can benefit any engine rebuild. They are well-suited for daily drivers where enhanced reliability and protection are desired, as well as for more performance-oriented builds.

Specifications

Brand: King Engine Bearings
Part #: MB5442XP0.5
UPC: 611500586880

King 07-09 Mazdaspeed 3 L3-VDT MZR DISI (t) Duratec High Performance Main Bearing Set - Size (0.50)

Name: King 07-09 Mazdaspeed 3 L3-VDT MZR DISI (t) Duratec High Performance Main Bearing Set - Size (0.50)
Brand: King Engine Bearings
SKU: king-engine-bearings-king-07-09-mazdaspeed-3-l3-vdt-mzr-disi-t-duratec-high-perf-t14-45736
Price: 108.49 USD
Availability: BackOrder

$108.49

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King Engine Bearings high performance main bearing set for many Ford, Mazda, and Mercury vehicles. Size is 0.50mm undersize.

Key Features

Fits a wide range of Ford, Mazda, and Mercury vehicles with L3 and L3-VDT MZR engines.
Main bearing set is 0.50mm undersize, intended for machined crankshafts.
Features King's pmax Black racing line tri-metal construction for improved performance.
Designed to manage heat and reduce friction in demanding engine applications.
Part number MB5442XP0.5 from King Engine Bearings.

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About this part

Product Details

If you're rebuilding the engine in a wide range of Ford, Mazda, or Mercury vehicles, consider this high-performance main bearing set from King Engine Bearings. These bearings are designed for the L3 and L3-VDT MZR engines, commonly found in models like the Mazda 3, Ford Escape, and Mercury Milan. They are specifically sized at 0.50mm undersize, which is crucial for engines that have been machined to compensate for wear or previous repairs.

This set is part of King's pmax Black racing line, featuring a tri-metal construction that offers improved durability and performance under demanding conditions. The advanced material composition helps manage heat and reduce friction, which is essential for maintaining oil pressure and protecting the crankshaft during operation. These bearings are a solid option for engine builds where reliability and performance are key considerations.