What does the CT-1 coating do?

The CT-1 coating is a dry film lubricant that bonds to the bearing surface. It helps reduce friction and wear, protecting the bearings and crankshaft journals, especially under high load and temperature conditions.

Do I need to machine my crankshaft for these bearings?

Yes, these are 0.25mm oversize bearings. Your crankshaft journals will need to be machined to this specific size to ensure a proper fit and oil clearance.

What is the warranty on ACL bearings?

ACL typically offers a limited warranty on their engine bearings. Please refer to the manufacturer's documentation or contact ACL directly for specific warranty details.

Specifications

Brand: ACL
Part #: 5M1644HC-.25
UPC: 9315726457627

ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Main Bearing Set - CT-1 Coated

Name: ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Main Bearing Set - CT-1 Coated
Brand: ACL
SKU: acl-acl-vw-audi-1781cc-1984cc-0-25-oversized-high-performance-main-bearing-set-c-t14-372696
Price: 152.42 USD
Availability: BackOrder

$152.42

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, 0.25mm oversize for VW/Audi 1.8T engines. Features CT-1 coating for better performance and durability.

Key Features

0.25mm Oversize — Corrects for minor journal wear or allows for a slightly larger radius crankshaft.
CT-1 Coating — A dry film lubricant that reduces friction and wear for improved durability.
High Performance — Built to handle the demands of performance engines.
Direct Fit — Designed to fit VW/Audi 1.8T engines.