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SKU: 4B7267H-STD
ACL Race Series Connecting Rod Bearing Set 4B7267H-STD for Ford Duratec and EcoBoost 1.6L Engines
Engine builders in motorsport rely on ACL Race Series bearings for their ability to handle extreme loads and RPM levels in Ford Duratec and EcoBoost applications. This 4B7267H-STD set stands out in high-stakes racing setups, where consistent oil film strength and heat dissipation prevent failures during prolonged high-output runs. Teams powering Ford Fiesta ST and Focus models through track days and competitive seasons report reliable operation up to 8500 RPM and 900 BHP without compromise.
Designed specifically for performance-modified 1.6L engines, these bearings provide the durability needed for turbocharged EcoBoost builds and naturally aspirated Duratec configurations, making them a direct fit for enthusiasts pushing factory limits.
Vehicle Fitment
This bearing set fits a range of Ford models equipped with the 1.6L Duratec (Zetec-SE) inline-4 DOHC 4-valve engine or the 1.6L EcoBoost inline-4 DOHC 4-valve turbo engine (1596cc displacement). Compatible applications include:
- Ford Fiesta (all trims): 2003-2019
- Ford Fiesta ST: 2014-2019
- Ford Focus (including ST models): 2012-2018
Verify your engine code against Duratec or EcoBoost 1.6L for exact compatibility in turbo or non-turbo variants.
What's Included in the Purchase
- One complete set of 8 tri-metal connecting rod bearings: 4 upper shells and 4 lower shells for a 4-cylinder engine
- Part number: 4B7267H-STD (standard size also available in .025mm and .250mm undersizes)
- Shell part number: 7267H
- Manufactured to micron-level tolerances for precise wall thickness and crush fit
No additional hardware or gaskets are included, this is a direct replacement for stock rod bearings in qualifying Ford engines.
Key Specifications
- Journal Shaft Diameter: 43.985mm minimum to 44.000mm maximum
- Housing Tunnel Diameter: 47.035mm minimum to 47.045mm maximum
- Maximum Bearing Wall Thickness: 1.516mm
- Maximum Bearing Length: 15.30mm
- Recommended Oil Clearance: 0.020-0.025mm per 25mm of journal diameter, plus 0.013mm (total example for 44mm journal: 0.063mm)
- Bearing Type: Tri-metal construction with copper-lead-tin lining (0.3mm thick), nickel barrier (0.001mm), lead-tin-copper overlay (0.013-0.018mm for fatigue resistance), and high-tensile SAE1010 steel backing
- Additional Features: Increased eccentricity for bore distortion adaptation, enlarged ID chamfers for larger crankshaft fillets, no flash plating for better heat transfer and retention
These specs ensure strong hydrodynamic oil film formation at high speeds, with deformable properties that conform to journal shapes under load.
Materials and Construction
Built with a tri-metal design proven in Formula 1 and Supercar engines, the bearings feature a high-strength overlay for seizure resistance and low friction. The copper-lead-tin lining provides excellent embeddability for debris, while the steel backing delivers the backbone for high-RPM stability. A dark tarnished finish (black/brown/blue hues) from the copper overlay enhances performance by avoiding tin migration in hot, loaded conditions no silvery flash plating here, prioritizing function over appearance.
Shipping Details
- Part Weight: 0.258 lbs (0.117 kg)
- Shipping Box Dimensions: Compact packaging suitable for standard engine component shipping (exact dimensions not specified by manufacturer typically 6" x 4" x 1" for similar sets)
Equip your Ford 1.6L build with the ACL Race Series 4B7267H-STD set to maintain peak engine integrity during aggressive tuning and racing demands.
Order now for precision-engineered reliability that keeps you on the podium.
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