What is the difference between standard size and undersize rod bearings?

Standard size bearings are meant to be used with a crankshaft that is within factory specifications. Undersize bearings, like 0.010" or 0.020" undersize, are used when the crankshaft journals have been machined down to correct for wear or damage.

Do these rod bearings come with installation instructions?

While these bearings are designed for a direct fit, it is always recommended to refer to the manufacturer's installation instructions or a reputable service manual for proper lubrication and torque specifications.

What is the primary benefit of using high-performance rod bearings?

High-performance rod bearings are built to withstand higher loads and RPMs than standard bearings. They offer improved oil clearance and lubrication, which is crucial for engine longevity when the engine is pushed harder.

2004-2009 Mazda 3 Rod Bearings | ACL 4B8170H-STD

Name: ACL Ford/Mazda (L3) Duratec 2.3L Standard Size High Performance Rod Bearing Set
Brand: ACL
SKU: acl-acl-ford-mazda-l3-duratec-2-3l-standard-size-high-performance-rod-bearing-se-t14-16269
Price: 55.92 USD
Availability: InStock

ACL Ford/Mazda (L3) Duratec 2.3L Standard Size High Performance Rod Bearing Set

$55.92

Only 5 left in stock

Fits 2004-2009 Mazda 3. ACL high performance rod bearings for the Duratec 2.3L engine. Standard size.

Key Features

Fits 2004-2009 Mazda 3 and 2003-2008 Mazda 6.
Designed for the Duratec 2.3L engine.
Standard size bearings, suitable for factory or reconditioned crankshafts.
High performance rod bearing set from ACL.
Helps reduce friction and ensure proper lubrication in the engine's bottom end.

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Product Details

Doing an engine rebuild on your 2004-2009 Mazda 3 with the Duratec 2.3L engine? These high-performance rod bearings from ACL are a solid choice for ensuring proper lubrication and reducing friction in the bottom end. They are designed to handle increased loads and higher RPMs, making them a popular upgrade when you're looking for improved engine reliability under demanding conditions.

ACL has been making engine bearings for a long time, and these are well-built with a focus on performance. They're a standard size, meaning they're meant to be used with a crankshaft that's still within factory specifications. If your crankshaft has been machined undersize due to wear or damage, you'd need a different size bearing. These are designed to fit right into the connecting rods and crankshaft journals, making installation straightforward as part of a larger engine build.

When you're putting an engine back together, especially one that's going to see more spirited driving, using good bearings is critical. These ACL bearings are a popular option for Mazda 3 owners looking to get the most out of their Duratec 2.3L. Make sure to follow the manufacturer's lubrication and torque specifications during installation for best results.