What is the difference between standard and Race Series rod bearings?

Race Series bearings are built with a more robust overlay material designed to withstand higher loads and temperatures common in performance applications. They offer improved fatigue resistance compared to standard bearings, which is crucial for modified engines.

Do I need to machine my crankshaft to use these STD size bearings?

The STD size bearings are intended for use with a crankshaft that is still within its original factory specifications. If your crankshaft has been ground undersize due to wear or previous repairs, you would need to select bearings of the corresponding undersize.

What other parts are typically needed when replacing rod bearings?

When replacing rod bearings, it's standard practice to also replace the main bearings, rod bolts, and engine oil. It's also a good time to inspect the crankshaft for any signs of wear or damage. Always refer to the manufacturer's service manual for detailed procedures.

ACL BMW N54/N55/S55B30 3.0L Inline 6 Race Series High Performance Rod Bearing Set

Specifications

Brand: ACL
Part #: 6B1584HX-STD
UPC: 9315726447208

ACL BMW N54/N55/S55B30 3.0L Inline 6 Race Series High Performance Rod Bearing Set

Name: ACL BMW N54/N55/S55B30 3.0L Inline 6 Race Series High Performance Rod Bearing Set
Brand: ACL
SKU: acl-acl-bmw-n54-n55-s55b30-3-0l-inline-6-race-series-high-performance-rod-bearin-t14-517141
Price: 208.61 USD
Availability: InStock

$208.61

In Stock

ACL BMW N54/N55/S55B30 3.0L Inline 6 Race Series High Performance Rod Bearing Set. Built for demanding engine builds.

Key Features

Fits 2011 BMW 1 Series M, 2007-2010 BMW 335i, 2009-2010 BMW 335i xDrive, 2007-2008 BMW 335xi, 2011-2013 BMW 335is, 2008-2010 BMW 535i, 2009-2010 BMW 535i xDrive, 2008 BMW 535xi, 2011-2012 BMW 740i, 2011-2012 BMW 740Li, 2008-2010 BMW X6, and 2009-2016 BMW Z4.
Designed for high-performance BMW N54, N55, and S55B30 3.0L inline-6 engines.
ACL Race Series bearings feature a specialized overlay material for improved fatigue resistance.
STD size is intended for use with a crankshaft within factory specifications.
Helps maintain oil clearance under increased engine loads and temperatures.

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Will this fit your vehicle?

Product Details

Already running headers and a tune on your N54, N55, or S55B30 engine? These ACL Race Series rod bearings are the next piece of the puzzle for a high-performance build. They're designed to handle the increased stress and heat that come with more power, helping to keep your engine running smoothly under demanding conditions. If you're pushing your BMW's 3.0L inline-6 beyond stock, upgrading your rod bearings is a smart move to ensure long-term reliability.

ACL has been making engine bearings for a long time, and this Race Series set is well-built with their experience in mind. They use a specialized overlay material that's tougher and more resistant to fatigue than standard bearings, which is crucial when you're making more horsepower. The STD size means they're meant to be used with a crankshaft that's still within factory specifications. Installing these bearings is a key step for anyone serious about building a reliable, powerful BMW engine.

This set is specifically for the 3.0L inline-6 engines found in a range of BMW models, including the 1 Series M, 135i, 335i, 335is, 535i, and Z4. Make sure to check the full fitment list to confirm compatibility with your specific vehicle. When you're rebuilding or heavily modifying your engine, using quality bearings like these from ACL is essential for peace of mind and performance.