What is the difference between standard and undersize bearings?

Standard size bearings are meant to be used when the crankshaft journals are still within their original factory specifications. Undersize bearings are used when the crankshaft journals have been machined down to remove wear or damage.

Do these bearings come with installation instructions?

While these bearings are a direct fit for the specified vehicles, it is always recommended to consult the official BMW service manual for detailed installation procedures and torque specifications.

What else might I need when replacing main bearings?

When replacing main bearings, it's common practice to also inspect and potentially replace rod bearings, piston rings, and engine seals. Ensure you have the correct assembly lube and follow the manufacturer's torque sequence precisely.

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Specifications

Brand: ACL
Part #: 6M1581HX-STD
UPC: 9315726469835

ACL BMW S85B50 5.0L V10 Standard Size Main Bearings

Name: ACL BMW S85B50 5.0L V10 Standard Size Main Bearings
Brand: ACL
SKU: acl-acl-bmw-s85b50-5-0l-v10-standard-size-main-bearings-t14-719913
Price: 361.97 USD
Availability: BackOrder

$361.97

On Backorder

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

Fits 2006-2010 BMW M5. ACL standard size main bearings for the S85B50 5.0L V10 engine. Ensures proper crankshaft support.

Key Features

Fits 2006-2010 BMW M5.
Standard size main bearings for the S85B50 5.0L V10 engine.
Supports the crankshaft and maintains proper oil clearance.
Well-built by ACL for reliable engine performance.
Essential for engine rebuilds and replacements.

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About this part

Product Details

This is a set of standard size main bearings from ACL, designed specifically for the high-performance S85B50 5.0L V10 engine found in the 2006-2010 BMW M5. Main bearings are crucial components that sit between the crankshaft and the engine block, supporting the crankshaft as it spins. When these bearings wear out, they can lead to increased engine noise, reduced oil pressure, and eventually, catastrophic engine failure. ACL is known for making well-built engine components, and these bearings are made to handle the demands of a powerful V10 engine.

This set includes all the standard size main bearings you'll need for a complete engine rebuild or replacement. Proper installation is key to ensuring the longevity and performance of your engine, so it's recommended to follow the manufacturer's service manual for detailed instructions.