What is the difference between standard (STD) and undersize bearings?

Standard (STD) bearings are meant to be installed when the crankshaft journals are still within their original factory specifications. Undersize bearings are used when the crankshaft has been machined down to correct for wear or damage.

What else might I need when installing main bearings?

When replacing main bearings, it's crucial to have the crankshaft journals measured to ensure they are within tolerance. You'll also need engine assembly lubricant, new main bearing bolts and torque wrench, and potentially a crankshaft seal and gasket set.

How do I know if my engine needs new main bearings?

Signs of worn main bearings often include knocking or rumbling noises from the bottom of the engine, especially under load, and a drop in oil pressure. If you suspect main bearing issues, it's best to have a mechanic inspect the engine.

Specifications

Brand: ACL
Part #: 4M7214A-STD

ACL Chrysler/Jeep V6 3.7L 2001-on Engine Crankshaft Main Bearing Set

Name: ACL Chrysler/Jeep V6 3.7L 2001-on Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chrysler-jeep-v6-3-7l-2001-on-engine-crankshaft-main-bearing-set-t14-630500
Price: 14.72 USD
Availability: BackOrder

$14.72

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ACL Engine Crankshaft Main Bearing Set for Dodge Dakota, Durango, Nitro, Ram 1500, Jeep Commander, Liberty.

Key Features

Fits Dodge Dakota (2004-2010), Dodge Durango (2004-2009), Dodge Nitro (2007-2011), Dodge Ram 1500 (2002-2010), Jeep Commander (2006-2010), and Jeep Liberty (2002-2012).
Designed for Chrysler/Jeep V6 3.7L engines from 2001 onwards.
Standard size (STD) bearings for use with factory-spec crankshafts.
Well-built materials ensure durability and proper function within the engine.
Meets or exceeds OEM specifications for reliable performance.

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About this part

Product Details

ACL uses well-built materials to ensure these bearings can handle the demanding environment inside your engine. They are manufactured to meet or exceed OEM specifications, meaning they'll fit right and perform as expected. Replacing main bearings is a critical part of any engine rebuild or repair, and using a reliable set like this ACL kit helps ensure the longevity of your engine's bottom end. This is a standard size (STD) set, meaning it's intended for crankshafts that are still within their original factory tolerances.

When you're rebuilding or repairing your engine, it's important to have all the necessary parts. Make sure to check your crankshaft for any damage or wear that might require machining before installing new bearings. This set is designed for the 3.7L V6 engine found in many Dodge and Jeep vehicles.