What does '+1.0mm undersize' mean for these bearings?

This means the bearings are designed to fit a crankshaft that has been machined down by 1.0mm. This is typically done during an engine rebuild to clean up wear or damage on the crankshaft journals. Using these bearings on a standard-sized crankshaft will result in excessive oil clearance and potential engine damage.

What is the bimetal aluminum silicon base construction?

This construction uses a combination of materials. The bimetal layer offers good wear resistance, while the aluminum silicon base provides excellent load-carrying capacity and conformability, which helps maintain oil film integrity under pressure.

Do these bearings come with installation hardware?

This product is for the main bearing set only. Installation hardware, such as main cap bolts or seals, is typically sold separately. Always refer to the manufacturer's installation instructions for a complete list of required components.

Specifications

Brand: King Engine Bearings
Part #: MB5353SI1.0
UPC: 611500423048

King Engine Bearings Ford 281 4.6L Sohc 16V (Size +1.0mm) Main Bearing Set

Name: King Engine Bearings Ford 281 4.6L Sohc 16V (Size +1.0mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-281-4-6l-sohc-16v-size-1-0mm-main-t14-770652
Price: 48.49 USD
Availability: BackOrder

$48.49

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Fits 1991-2011 Lincoln Town Car. King Engine Bearings 4.6L SOHC main bearing set, +1.0mm undersize, made with a bimetal aluminum silicon base for durability.

Key Features

Fits 1991-2011 Lincoln Town Car, 1996-2011 Ford Crown Victoria, and 2006-2011 Mercury Grand Marquis.
Main bearing set for Ford 281 4.6L SOHC 16V engines.
Features a bimetal construction with an aluminum silicon base for durability.
This set is +1.0mm undersize, intended for use with a crankshaft machined to that specification.
Supports proper oil clearance and crankshaft function in the engine's bottom end.

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About this part

Product Details

These main bearings from King Engine Bearings are built with a bimetal aluminum silicon base, a solid choice for rebuilding or refreshing the bottom end of your Ford 4.6L SOHC 16V engine. They are specifically sized at +1.0mm, meaning they are intended for use when the crankshaft journals have been machined down by 1.0mm to clean up wear or damage. This undersize specification is crucial for ensuring proper oil clearance and bearing function after a crankshaft has been reconditioned.

King Engine Bearings is known for making well-built components, and this set is no different. The bimetal construction offers good wear resistance and load-carrying capacity, which is important for the main bearings that support the crankshaft. When you're putting an engine back together, getting the bearing clearances right is key to its longevity and performance, and using a reputable brand like King helps ensure you're on the right track.

This set is designed to fit a range of Ford, Lincoln, and Mercury vehicles equipped with the 4.6L SOHC 16V engine. Make sure to confirm your crankshaft has been machined to a +1.0mm undersize before ordering, as these bearings will not work with a standard-sized or differently machined crankshaft.