King MB5009AM STD AM Main Bearings Ford Fiesta/Fusion 1.25i Zetec EcoBoost 1.6

Vehicle Fitment

• 2011-2019 Ford Fiesta (S, SE, SEL, SES, FWD, 1.6L I4 Naturally Aspirated Ti-VCT)
• 2014-2019 Ford Fiesta ST (FWD, 1.6L I4 EcoBoost Turbocharged)
• 2019 Ford Fiesta ST Line (FWD, 1.6L I4 EcoBoost Turbocharged)
• 2013-2018 Ford Fiesta Titanium (FWD, 1.6L I4 Ti-VCT / EcoBoost)
• 2013-2014 Ford Fusion (S, SE, SE Hybrid, Titanium, Titanium Hybrid, FWD, 1.6L I4 EcoBoost)
• 2013-2014 Ford Fusion Energi (SE, Titanium, FWD, 1.6L I4 EcoBoost Plug-in Hybrid)

Fitment Notes

• Fits Ford 1.25i Zetec and 1.6L EcoBoost/Ti-VCT inline-4 engines sharing the same main journal diameter - confirm engine code before ordering
• Standard (STD) size - for use on crankshafts at factory main journal diameter; always measure journals before ordering
• AM Series = standard bi-metal aluminum base (SAE-783 equivalent); the softest and most embeddable material in King's range, optimized for low to medium load naturally aspirated and lightly turbocharged passenger car engines
• Does not fit the 1.0L EcoBoost 3-cylinder or 2.0L I4 engines used in other Fiesta or Fusion variants - verify engine displacement and code before ordering
• Ford Fusion 1.6L EcoBoost fitment confirmed for 2013-2014 only - the 2015+ Fusion dropped this engine in North America
• Available in +0.25mm and +0.50mm undersizes under separate part numbers for ground crankshafts

Features

• AM Series standard aluminum-based bi-metal construction (SAE-783 equivalent) - the softest material in King's lineup for maximum embeddability and contamination tolerance
• Superior particle embeddability traps contaminants and protects crankshaft journals from scoring in low to medium load passenger car applications
• Reduces microscopic ferrite peaks on reconditioned journal surfaces for better oil film stability
• Lead-free construction meets current environmental compliance standards
• Full 5-pair set covers all main crankshaft journals in the inline-4 engine
• Tight wall thickness tolerances ensure consistent oil clearance across all 5 main journals
• Ideal OE-replacement choice for stock and mild performance street rebuilds on Fiesta and Fusion 1.6L applications
• Manufactured under IATF 16949 and SAE AS 9100 certified quality control

Specifications

• Part Number: MB5009AM
• Size: Standard (STD)
• Series: AM (Standard Bi-Metal Aluminum Base - OE Replacement)
• Engine: Ford 1.25i Zetec / 1.6L Ti-VCT / 1.6L EcoBoost Inline-4
• Position: Crankshaft Main (Upper and Lower shells)
• Quantity: 5 pairs (10 shells total - full I4 main bearing set)
• Available Sizes: STD / +0.25mm / +0.50mm

Included Components

• 5x Upper Main Bearing Shells
• 5x Lower Main Bearing Shells

Product Description

The King MB5009AM is a standard-size crankshaft main bearing set engineered for the Ford 1.25i Zetec and 1.6L EcoBoost/Ti-VCT inline-4 engines, covering the 2011-2019 Fiesta and 2013-2014 Fusion across all trim levels including the performance-focused Fiesta ST. The AM Series uses King's standard bi-metal aluminum base material - the softest and most embeddable compound in their lineup - making it the ideal OE-replacement choice for low to medium load naturally aspirated and lightly turbocharged passenger car engines where contamination tolerance and journal protection are the primary concerns.

As a standard-size set, the MB5009AM is designed for 1.6L Zetec and EcoBoost crankshafts at factory main journal diameter and installs without modification. It is the go-to choice for OE-replacement rebuilds where the crankshaft is in good condition. Always measure crankshaft journal diameters with a precision micrometer before ordering - undersized variants are available under separate part numbers for reconditioned crankshafts. For higher-output Fiesta ST builds, King's XP or XPC Series in this same application offer race-grade tri-metal construction.