What is the main difference between Race Series and OEM bearings?

ACL Race Series bearings are built with higher tensile strength materials and unique overlay formulations to withstand greater loads and heat than standard OEM bearings. This makes them ideal for performance engines or rebuilt engines that will be pushed harder.

Do these bearings come with assembly lubricant?

This set includes the main bearings only. It is critical to use a quality assembly lubricant on the bearing surfaces and crankshaft journals during installation to ensure proper oil film formation and prevent damage.

What if my crankshaft journals are worn or machined?

These are standard size bearings. If your crankshaft journals have been machined undersize, you will need to order the corresponding undersize ACL bearings to ensure proper clearance and oil film.

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

Specifications

Brand: ACL
Part #: 5M8174H-STD
UPC: 9315726455685

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

Name: ACL 03+ Ford/Mazda 4 2.0L/2.3L DOHC Duratec Standard Size Race Series Main Bearing Set
Brand: ACL
SKU: acl-acl-03-ford-mazda-4-2-0l-2-3l-dohc-duratec-standard-size-race-series-main-be-t14-348266
Price: 127.74 USD
Availability: InStock

$127.74

Only 2 left in stock

Fits 2003 Ford Focus. ACL Race Series main bearings are built for performance and durability.

Key Features

Fits 2003 Ford Focus.
Standard size main bearing set for 2.0L and 2.3L DOHC Duratec engines.
ACL Race Series bearings feature a high-strength construction with 200,000 psi tensile strength.
Unique overlay formulation offers excellent conformability and fatigue resistance.
Designed to handle increased loads and heat in performance applications.
Helps maintain a consistent oil film for reduced wear and improved engine life.

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Fits this vehicle

Ford Focus 2003

Product Details

200,000 psi tensile strength puts these ACL Race Series main bearings well above stock hardware. If you're rebuilding the engine in your 2003 Ford Focus with the 2.0L or 2.3L Duratec engine, these bearings are a solid choice for enhanced durability. They're designed to handle the increased loads and heat that come with performance applications, ensuring your engine's crankshaft stays properly supported.

ACL uses a unique overlay formulation in their Race Series bearings. This advanced material is engineered to provide excellent conformability to the crankshaft journal while also offering superior resistance to wear and fatigue. This means they can maintain a consistent oil film even under demanding conditions, which is crucial for preventing damage and maximizing the lifespan of your engine rebuild. They are manufactured to standard size, so they're a direct replacement for your original bearings if your crankshaft journals are still within factory specifications.

When installing these main bearings, it's important to ensure your crankshaft journals are clean and within the specified tolerances. Proper lubrication during assembly is also key to their performance and longevity. If your crankshaft has been machined or is out of spec, you'll need to order the appropriate undersize bearings instead.