ACL Race Series Connecting Rod Bearing Set
Part #: 4B8172H-STD
Overview
The ACL 4B8172H-STD Race Series Connecting Rod Bearing Set is a standard-size performance bearing set designed for select Ford 2.0L and 2.3L EcoBoost engines as well as the Mazda 2.3L MZR DISI Turbo. ACL Race Series bearings use tri-metal construction and performance-oriented bearing geometry for increased durability and reliable oil control in stock rebuilds, modified engines, and high-performance applications.
Key Features
- Fits select Ford 2.0L EcoBoost engines
- Fits select Ford 2.3L EcoBoost engines
- Fits Mazda 2.3L MZR DISI Turbo / L3-VDT
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Standard-size (STD) bearings
- Standard oil clearance
- Complete set for 4 connecting rods
- ACL Race Series construction
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Tri-metal bearing material
- Hardened steel backing
- Performance-oriented bearing geometry
- Identical upper and lower bearing halves
- Designed for performance and high-load engine applications
Construction & Design
ACL Race Series bearings combine tri-metal construction with hardened steel backing and precision manufacturing to provide the strength, durability, and dimensional consistency required in performance engines. The 4B8172H-STD uses identical bearing halves and maintains standard oil clearance for engines using standard-size rod journals.
Installation & Fitment
Engine Families: Ford EcoBoost / Mazda MZR
Engine Sizes: 2.0L / 2.3L Turbo
Bearing Type: Connecting Rod
Series: ACL Race Series
Size: Standard (STD)
Oil Clearance: Standard
Material: Race Series Tri-Metal
Shaft Diameter: 2.0465"–2.0472"
Housing Bore: 2.1662"–2.1667"
Maximum Wall Thickness: 0.0591"
Maximum Width: 0.669"
Vehicle applications include select Ford Ranger, Mustang EcoBoost, Focus ST/RS, Explorer, Edge, Fusion and Maverick models equipped with compatible 2.0L or 2.3L EcoBoost engines, along with Mazda MZR 2.3L turbo applications. Current application data includes the Ford Ranger 2.3L EcoBoost through 2026 and Mustang EcoBoost through 2026.
What's Included
- 4 upper connecting rod bearing halves
- 4 lower connecting rod bearing halves
- Complete bearing set for all 4 connecting rods
Ideal For
Ideal for Ford 2.0L/2.3L EcoBoost and Mazda 2.3L MZR performance builds requiring a standard-size ACL Race Series connecting rod bearing set with standard oil clearance.
