5M1644HC-STD Race Main Bearing Set, Standard, Coated, Audi 3A 1984cc Inline4 SOHC 2v

Name: 5M1644HC-STD Race Main Bearing Set, Standard, Coated, Audi 3A 1984cc Inline4 SOHC 2v
Brand: ACL BEARINGS
SKU: 654-5M1644HC-STD
Price: 117.99 USD
Availability: InStock

^$117⁹⁹

Ships on 09/21/2026

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Audi

Race Main Bearing Set

Standard

Coated

Audi 3A 1984cc Inline4 SOHC 2v

Set of 5

ACL Bearings 5M1644HC-STD Features:

Trusted by champions worldwide, ACL RACE Series Bearings are the choice for record-setting engines from sport compact to small block race machines. Engineered w/a unique blend of design, metallurgy, and precision manufacturing, these Bearings deliver unmatched durability and performance under extreme conditions.

This Main Bearing Set include 6 Bearings w/Oil grooves and 4 without. The #4 journal will receive the Oil groove on both sides of the journal, the rest have a grooved Bearing on the block side only. See shell diagrams showing #4
Width: 0.728 in.
Outside Diameter: 2.3236 in.
Outside Diameter: 2.3228 in.
Shaft Diameter: 2.1251 in.
Shaft Diameter: 2.1243 in.
Grade Type: Performance
Maximum Wall Thickness: 0.0985 in.

Unleash Unmatched RPM Performance with ACL Race-Series Main Bearings

ACL Race-Series Main Bearings bring race-tested durability, precision engineering, and state-of-the-art metallurgy into your high-performance build. Their trimetal design features a high-strength overlay plate with reduced thickness for improved fatigue resistance, backed by hardened steel for enhanced support and retention under extreme conditions. These bearings deliver when the going gets tough—on the street, the strip, or the racetrack. Available for various domestic and international applications.

ACL also offers versions with extra oil clearance (HX) or coated (HC).

Part TypeMain Bearing

Product LineACL Bearing Race-Series Main Bearings

BrandACL BEARINGS

Package Height1.02

Package Width0.728 in.

Package Length6.3

Weight0.67 PG

Part CategoryPerformance Parts

Maximum Wall Thickness0.0985 in.

Shaft Diameter2.1243 in.

Part FitmentDirect Fit