The ACL Race Series Con Rod Bearing (Part #4B8172H-STD) is a precision-engineered connecting rod bearing set designed for high-performance engine applications. These bearings provide a critical interface between the connecting rod and crankshaft journal, ensuring smooth rotation and minimal friction under high loads. Designed for reliable performance and long service life, reducing wear and maintaining proper oil clearance. Available in Standard size for direct replacement applications requiring OE clearances. Engineered with strict quality control standards to ensure consistent performance and reliable engine operation.

Applicable to:
- Mazda Mazda 3 MPS, Mazda 6, CX-7 DOHC 16v DISI Turbo (L3-VDT MZR (Duratec))
- Ford Mustang, Focus RS All (2.0L, 2.3L Ecoboost Turbo)