What does '0.025 inch undersize' mean for these bearings?

This means the bearings are manufactured to be 0.025 inches smaller in diameter than a standard-sized bearing. They are designed to be used when the crankshaft journals have been machined down to this specific undersize during an engine rebuild to correct wear or damage.

Are these bearings sold individually or as a set?

This is a set of connecting rod bearings. You will receive enough bearings to replace all connecting rod bearings on your engine.

What is the primary function of connecting rod bearings?

Connecting rod bearings are crucial components that sit between the connecting rod and the crankshaft. Their main job is to reduce friction and wear in this high-stress area, allowing the crankshaft to rotate smoothly within the engine.

ACL BMW 1.6/1.8/1.9L Z3 Engine Connecting Rod Bearing Set

Specifications

Brand: ACL
Part #: 4B1490H-.025

ACL BMW 1.6/1.8/1.9L Z3 Engine Connecting Rod Bearing Set

Name: ACL BMW 1.6/1.8/1.9L Z3 Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-bmw-1-6-1-8-1-9l-z3-engine-connecting-rod-bearing-set-t14-631837
Price: 76.38 USD
Availability: BackOrder

$76.38

On Backorder

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

Fits 1996-1999 BMW 318ti. ACL 1.6/1.8/1.9L connecting rod bearings, 0.025 inch undersize, for engine rebuilds.

Key Features

Fits 1996-1999 BMW 318ti, 1996-1998 BMW 318i, 1996-1997 BMW 318is, and 1996-1998 BMW Z3.
Set of connecting rod bearings for 1.6L, 1.8L, and 1.9L BMW engines.
Bearings are 0.025 inch undersize, intended for use with a machined crankshaft.
Well-built by ACL, a known manufacturer of engine components.
Designed to manage friction and wear in the engine's rotating assembly.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

Already running a built engine or planning a rebuild? This set of connecting rod bearings from ACL is a key component for ensuring your BMW's 1.6, 1.8, or 1.9L engine runs smoothly and reliably. These bearings sit between the connecting rod and the crankshaft, controlling friction and wear in a critical part of the engine's rotating assembly. Because they are specifically sized at 0.025 inches undersize, they are intended for use when the crankshaft journals have been machined down to match this size during an engine rebuild.

ACL has been making engine bearings for a long time, and this set is well-built for the job. They are designed to handle the pressures and temperatures found in performance or rebuilt engines. When you're rebuilding an engine, getting the bearing clearances just right is crucial for longevity and performance, and using bearings that are the correct size for your machined crankshaft is a big part of that. This set ensures you have the right components for that precise setup.