What is the size of these main bearings?

These main bearings are standard (STD) size. This means they are intended for use with a crankshaft that has not been machined undersize or oversize.

What is PMaxBlack technology?

PMaxBlack is King Engine Bearings' proprietary technology designed to increase the load capacity of the bearings. This helps them withstand higher stresses in performance or heavy-duty applications.

What does Radialock mean for these bearings?

Radialock refers to King's design that helps maintain the optimal crush height of the bearing. Proper crush is essential for the bearing to seat securely in the engine block and transfer heat effectively.

King Engine Bearings Ford V8 351ci 5.8L 400ci 6.6L 16V (Size STD) Performance Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB5505XP
UPC: 611500532078

King Engine Bearings Ford V8 351ci 5.8L 400ci 6.6L 16V (Size STD) Performance Main Bearing Set

Name: King Engine Bearings Ford V8 351ci 5.8L 400ci 6.6L 16V (Size STD) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-v8-351ci-5-8l-400ci-6-6l-16v-size-t14-4355607
Price: 101.90 USD
Availability: BackOrder

$101.90

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 MB5505XP main bearing set for Ford V8 351ci/400ci engines. STD size. Features PMaxBlack for superior load capacity.

Key Features

Fits 49+ vehicle make/model combinations.
Main bearing set for Ford V8 351ci (5.8L) and 400ci (6.6L) 16V engines.
Standard (STD) size for use with factory-spec crankshafts.
Features PMaxBlack technology for superior load capacity.
Incorporates 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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Will this fit your vehicle?

Product Details

When you're rebuilding the bottom end of your Ford V8, you want main bearings that can handle the job. This set from King Engine Bearings includes the main bearings you need for Ford 351ci (5.8L) and 400ci (6.6L) engines. These bearings are built with a tri-metal copper-based material for solid performance.

King has been specializing in bearings since 1960, focusing on making them as strong as possible. These bearings feature their PMaxBlack technology, which helps them handle higher loads without issue. They also incorporate Radialock design, which helps maintain the optimal crush height for a secure fit. This set is standard size, meaning it's meant for crankshafts that are still within their original specifications.

This set fits a wide range of Ford vehicles, including popular models like the Ford Bronco and F-150, as well as the De Tomaso Pantera. Make sure to check the full fitment list to confirm compatibility with your specific application.