What does 'extra oil clearance' mean for these bearings?

Extra oil clearance means there's a slightly larger gap between the bearing and the crankshaft journal than a standard bearing. This allows for more oil to flow through, which can help with cooling and lubrication, especially in engines that are pushed harder or have higher mileage.

What engine sizes does this bearing set fit?

This ACL main bearing set is designed for the BMW M40 engine, specifically the 1.6L, 1.8L, and 1.9L displacements. It's important to confirm your engine code before ordering.

Do I need any special tools to install these bearings?

While these are direct-fit bearings, proper installation requires specific tools. You'll need a reliable torque wrench to ensure the main caps are tightened to the manufacturer's specifications. It's also highly recommended to consult a service manual for the correct torque sequence and procedures.

Specifications

Brand: ACL
Part #: 5M1538HX-STD
UPC: 9315726432938

ACL BMW M40B16/18 (1.6L / 1.8L / 1.9L) Standard Main Bearing Set w/ Extra Oil Clearance

Name: ACL BMW M40B16/18 (1.6L / 1.8L / 1.9L) Standard Main Bearing Set w/ Extra Oil Clearance
Brand: ACL
SKU: acl-acl-bmw-m40b16-18-1-6l-1-8l-1-9l-standard-main-bearing-set-w-extra-oil-clear-t14-416050
Price: 231.46 USD
Availability: BackOrder

$231.46

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

ACL BMW M40B16/18 (1.6L / 1.8L / 1.9L) Standard Main Bearing Set w/ Extra Oil Clearance. Fits 1996-1999 BMW 318ti and other models.

Key Features

Fits 1996-1999 BMW 318ti, 1996-1998 BMW 318i, 1996-1997 BMW 318is, and 1996-1998 BMW Z3.
Standard size main bearing set with extra oil clearance for improved oil flow.
Designed for BMW M40 engines (1.6L, 1.8L, 1.9L).
Well-built by ACL, a known name in engine components.

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About this part

Product Details

When you're rebuilding or refreshing an M40 engine, especially the 1.6L, 1.8L, or 1.9L variants found in certain BMW models, getting the main bearings right is crucial. This ACL set is built to standard size but includes extra oil clearance. This means a bit more room for oil to flow, which can help keep things cooler and reduce wear, particularly in engines that might see harder use or have accumulated some miles. ACL has been around for a while, and they make well-built engine components.

This set is designed to fit directly into your 1996-1999 BMW 318ti, as well as the 1996-1998 318i, 318is, and Z3 models with the M40 engine. Make sure you have the correct torque wrench and service manual handy when you're ready for installation; proper torque is key for these bearings to do their job effectively.