ACL 5M8174HX-STD Race Series Main Bearing Set for 2003+ Ford and Mazda 2.0L/2.3L DOHC Duratec Engines

ACL 03+ Ford/Mazda 4 2.0L/2.3L DOHC Duratec Standard Size Race Series Main Bearing Set

The ACL 5M8174HX-STD Race Series Main Bearing Set is engineered for 2003 and newer Ford and Mazda 2.0L and 2.3L DOHC Duratec engines. Manufactured to standard size specifications, this main bearing set supports reliable crankshaft operation in performance-oriented street and competition applications. ACL’s Race Series bearings are designed to provide consistent fitment, dependable oil control, and durable performance under demanding engine conditions.

Each bearing is produced with a high-strength construction and performance-focused material technology to help withstand elevated loads and operating temperatures. The bearing design promotes stable crankshaft support while helping maintain proper oil clearance when installed with a correctly prepared engine block and crankshaft. The standard-size configuration is intended for applications using crankshaft journals that remain within the original factory specifications.

Use the ACL part number 5M8174HX-STD to verify compatibility with your engine build before ordering. This set fits the 2003 Ford Focus listed in the available fitment data and is intended for select Ford and Mazda Duratec engine applications. Professional installation is recommended, including inspection of crankshaft journals, housing bores, bearing clearances, and lubrication passages. Always confirm the applicable engine code, model year, and required bearing size during assembly.

What’s Included: One ACL Race Series standard-size main bearing set. Installation hardware, gaskets, seals, and other engine components are not included unless specifically stated.

Features:

• Race Series Construction: Designed for demanding street performance and competition engine applications.
• Standard Size Fitment: Intended for crankshaft journals and engine blocks maintained within original factory specifications.
• High-Strength Bearing Material: Helps support reliable performance under increased engine loads and operating temperatures.
• Duractec Application Coverage: Fits select 2003 and newer Ford and Mazda 2.0L and 2.3L DOHC Duratec engines, including the 2003 Ford Focus listed in the available fitment data.

Fitments:
2003 Ford Focus ZX3

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1