What does '0.50mm undersize' mean for these bearings?

This means the bearings are manufactured to be 0.50mm smaller in diameter than standard size. They are intended for use when the engine's crankshaft journals have been machined down by 0.50mm to correct wear or damage.

What happens if I install undersize bearings on a standard crankshaft?

Installing undersize bearings on a standard-sized crankshaft will result in excessive clearance. This can lead to knocking noises, poor oil pressure, and potential engine damage.

Do these bearings come with new rod bolts?

This product is a set of connecting rod bearings only. New rod bolts are typically sold separately and should be replaced when installing new bearings.

Specifications

Brand: ACL
Part #: 4B1906P-.50

ACL VW 4 1780-1983cc 1983-on Engine Connecting Rod Bearing Set

Name: ACL VW 4 1780-1983cc 1983-on Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-vw-4-1780-1983cc-1983-on-engine-connecting-rod-bearing-set-t14-631905
Price: 14.63 USD
Availability: BackOrder

$14.63

On Backorder

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

Worn connecting rod bearings cause engine noise and damage. This ACL bearing set is a direct fix for VW 1.8L and 2.0L engines.

Key Features

Connecting rod bearing set — replaces worn bearings to restore proper engine function.
0.50mm undersize — for use with a crankshaft machined to this specification.
Direct fit for VW 1.8L and 2.0L engines (1983-on).

This bearing set fits Volkswagen 1.8L and 2.0L engines from 1983 through 1999.

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