What is the condition of these bearings?

These are new, standard size connecting rod bearings from ACL. They are designed to meet or exceed original equipment specifications for the listed BMW engines.

Do these bearings come with installation instructions?

While specific instructions are not included in the packaging, it is critical to refer to the manufacturer's official service manual for your specific BMW model. This will detail proper installation procedures, torque specifications, and oil clearance measurements.

What if my crankshaft journals are worn or have been machined?

This is a standard size bearing set. If your crankshaft journals have been machined undersize, you will need to order the corresponding undersize bearings from ACL to ensure proper oil clearance and engine longevity.

Specifications

Brand: ACL
Part #: 6B1490H-STD
UPC: 9315726278246

ACL BMW M20/M50/M52/M54 - 1919CC 80.0mm Bore 66.0mm Stroke Standard Size Conrod Bearing Set

Name: ACL BMW M20/M50/M52/M54 - 1919CC 80.0mm Bore 66.0mm Stroke Standard Size Conrod Bearing Set
Brand: ACL
SKU: acl-acl-bmw-m20-m50-m52-m54-1919cc-80-0mm-bore-66-0mm-stroke-standard-size-conro-t14-249672
Price: 114.51 USD
Availability: BackOrder

$114.51

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ACL standard size conrod bearing set for BMW M20, M50, M52, and M54 engines. Essential for engine rebuilds.

Key Features

Fits a wide range of BMW M20, M50, M52, and M54 inline-6 engines.
Standard size bearings ensure proper fitment for factory-spec crankshaft journals.
Designed to maintain correct oil clearance between the connecting rod and crankshaft.
Well-built by ACL, a company with a long history in engine bearing manufacturing.
Essential component for engine rebuilds and overhauls.

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About this part

Product Details

When you're rebuilding the engine in your BMW, getting the right internal components is crucial. This set of standard size connecting rod bearings from ACL is built to fit a wide range of popular BMW inline-6 engines, including the M20, M50, M52, and M54 series. These bearings sit between the connecting rod and the crankshaft, allowing them to rotate smoothly while handling the immense forces generated during combustion. Replacing these is a key step in any engine overhaul to ensure proper oil clearance and long-term reliability.

ACL has been making engine bearings for a long time, and this set is made with their experience in mind. They're built to the original equipment specifications for your BMW engine, meaning they'll fit right and perform as expected. The standard size ensures they're a direct replacement for your original bearings, assuming your crankshaft journals are still within factory tolerances. If your crankshaft has been machined, you'll need to check the specific undersize required before ordering.

This set includes all the bearings you'll need for your engine's connecting rods. Make sure to follow the manufacturer's installation instructions carefully, paying close attention to oil clearances and torque specifications, to get the most out of these well-built bearings.