What does '.25' mean in the part number 5M1643-.25?

The '.25' indicates that these main bearings are undersized by 0.25mm. They are intended for use when the crankshaft journals have been machined down by 0.25mm to account for wear or previous machining.

What is the difference between main bearings and rod bearings?

Main bearings support the crankshaft where it sits in the engine block. Rod bearings connect the connecting rods to the crankshaft, allowing them to rotate.

Do these bearings come with new seals or O-rings?

This product is a set of crankshaft main bearings only. Seals and O-rings are typically sold separately and are not included with this bearing set.

Specifications

Brand: ACL
Part #: 5M1643-.25

ACL VW 4 1588-1715-1780-1984cc 1974-on Engine Crankshaft Main Bearing Set

Name: ACL VW 4 1588-1715-1780-1984cc 1974-on Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-vw-4-1588-1715-1780-1984cc-1974-on-engine-crankshaft-main-bearing-set-t14-631527
Price: 24.05 USD
Availability: BackOrder

$24.05

On Backorder

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

ACL main bearings for VW 1.6L-2.0L engines. This set is undersized by 0.25mm for rebuilding worn crankshafts.

Key Features

Main Bearing Set — Replaces the main bearings that support the crankshaft in your engine.
For VW Engines — Fits 1.6L, 1.7L, 1.8L, and 2.0L VW engines from 1974 onwards.
Undersize .25mm — These bearings are 0.25mm undersize, intended for crankshafts that have been machined to match.
ACL Brand — A well-known name in engine bearings.

This part is designed for 1974-on VW vehicles with 1588cc, 1715cc, 1780cc, and 1984cc engines.

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