ACL Ford/Mazda 4 2.3L DOHC Duratec Standard Size High Performance Rod Bearing Set

When you're building an engine that needs to handle more stress, like in a performance build or if you're just replacing worn parts on your 2004-2009 Mazda 3 or 2003-2008 Mazda 6 with the 2.3L Duratec engine, you need rod bearings that can keep up. These ACL high-performance rod bearings are built to handle increased loads and higher RPMs compared to stock.

ACL uses a specialized overlay material that's designed for improved strength and durability under demanding conditions. The 'HX' designation means these bearings feature a tri-metal construction, which offers excellent embeddability and seizure resistance, crucial for preventing damage when oil flow might be less than ideal. They are manufactured to standard size, meaning they're a direct replacement for your original bearings if your crankshaft journals are still within factory specifications. This attention to material science and construction means you get a well-built bearing that helps protect your engine's rotating assembly.

If your crankshaft journals have been machined undersize during a rebuild, you'll need to select the corresponding undersize bearing set from ACL. Always refer to your vehicle's service manual for proper installation procedures and torque specifications.