King MB4570MC MC Series Main Bearing Set for Ford EcoBoost 3.5L V6 Standard

Vehicle Fitment

• 2011-2026 Ford F-150 (3.5L EcoBoost V6)
• 2017-2026 Ford Expedition (3.5L EcoBoost V6)
• 2013-2019 Ford Explorer Sport (3.5L EcoBoost V6)
• 2010-2019 Ford Flex (3.5L EcoBoost V6)
• 2013-2019 Ford Taurus SHO / Taurus (3.5L EcoBoost V6)
• 2017-2026 Ford F-150 Raptor (3.5L EcoBoost V6)
• 2016-2026 Ford F-150 Police Responder (3.5L EcoBoost V6)
• 2015-2026 Ford Transit 150/250/350/350HD (3.5L EcoBoost V6)
• 2018-2026 Lincoln Navigator (3.5L EcoBoost V6)
• 2010-2019 Lincoln MKS (3.5L EcoBoost V6)
• 2010-2019 Lincoln MKT (3.5L EcoBoost V6)

Fitment Notes

• Fits Ford EcoBoost 3.5L V6 in both longitudinal (truck/SUV) and transverse (car/crossover) applications
• Standard (STD) size -- verify crankshaft journal size before purchase; oversizes available separately (+0.25mm, +0.75mm)
• 4 pairs included -- covers all main journal positions for the 3.5L V6
• Lead-free construction -- suited for start-stop and hybrid-equipped vehicles
• Verify compatibility of non-King components when used with other brand parts

Features

• King MC Series bi-metal construction
• Steel back with strengthened aluminum alloy substrate
• K-340 nano-composite polymer coating (5-10 microns)
• Solid lubricant and ceramic additives in coating layer
• Lead-free formulation
• Suited for start-stop and hybrid engine operation
• OE-replacement polymer design
• Rigorous multi-checkpoint quality control during manufacturing
• Trusted in aviation and motorsport applications

Specifications

• Application: Ford EcoBoost 3.5L V6
• Bearing Type: Main bearing set
• Series: MC (Bi-Metal Polymer)
• Coating: K-340 nano-composite polymer, 5-10 microns
• Construction: Steel back / strengthened aluminum alloy
• Size: Standard (STD)
• Quantity: 4 pairs
• Lead-free: Yes
• UPC: 611500630750

Included Components

• 4x pairs main bearings (8 individual bearing shells total)

Product Description

The King MB4570MC is an MC Series main bearing set engineered specifically for the Ford EcoBoost 3.5L V6 engine -- one of the most widely deployed twin-turbocharged powerplants in the Ford and Lincoln lineup. The MC Series uses a bi-metal construction of a steel back bonded to a strengthened aluminum alloy substrate, topped with King's proprietary K-340 nano-composite polymer coating applied at 5-10 microns. This coating incorporates solid lubricant and ceramic additives that maintain a protective film on bearing surfaces even during metal-to-metal contact conditions -- making it particularly well-suited for start-stop systems and applications where oil film pressure may momentarily drop during cold starts or restart cycles.

This set covers all main crankshaft journal positions for the 3.5L EcoBoost V6, supplied as 4 pairs in standard (STD) size. It is a lead-free design in compliance with modern environmental and OE replacement standards. The MB4570MC is an OE-replacement application suited for stock rebuilds, high-mileage refreshes, and performance engine builds on the 3.5L EcoBoost platform across F-150, Expedition, Explorer, Flex, Taurus, Transit, Navigator, and Lincoln MKS/MKT applications. Crankshaft journal dimensions should be verified prior to purchase; King also offers oversized variants (+0.25mm, +0.75mm) for journals that have been machined or show wear beyond standard tolerances.