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ACL Performance Engine Bearings 4B1946H-STD Honda

High Performance Engine Bearings

Condition: Brand New

Manufacturer: ACL

Compatibility: Honda A, B, and F-series engines – see engine codes and applications below.

Product Description:

ACL bearings are designed for tuning and engine upgrades where higher strength and reliability are required compared to OEM bearings. With improvements in materials, dynamic thickness, heat conduction, oil grooves, and oil distribution, ACL is recognized as one of the leading bearing manufacturers worldwide.

Bearing Data:

Part Number: 4B1946H
Bearing Size: STD
Bearing Half Type: Identical halves
Bearing Material: F781

Technical Data (mm):

Max overall length: 19.5
Max shaft size: 45
Max tunnel size: 48.024
Max vertical oil clearance: 0.108
Max wall at crown: 1.504
Min shaft size: 44.98
Min tunnel size: 48
Min vertical oil clearance: 0.049

Technical Data (in):

Max overall length: 0.7677
Max shaft size: 1.7716
Max tunnel size: 1.8907
Max vertical oil clearance: 0.00425
Max wall at crown: 0.0592
Min shaft size: 1.7709
Min tunnel size: 1.8898
Min vertical oil clearance: 0.00193

Engine Codes:

A18A / A20A1 / A20A2 / A20A3 / A20A4 / B16A1 / B16A2 / B16A3 / B16A4 / B16A6 / B17A1 / B18A / B18A1 / B18B1 / B18B2 / B20A3 / B20A4 / B20B3 / B20B4 / B20B8 / B20Z2 / ES / ET / F18B / F20B3 / F20B5 / F20B6

Applications:

Honda A18A 1829cc Inline4 SOHC 3v
Honda A20A1 1955cc Inline4 SOHC 3v
Honda A20A2 1955cc Inline4 SOHC 3v
Honda A20A3 1955cc Inline4 SOHC 3v
Honda A20A4 1955cc Inline4 SOHC 3v
Honda B16A1 1595cc Inline4 DOHC 4v VTEC
Honda B16A2 1595cc Inline4 DOHC 4v VTEC
Honda B16A3 1595cc Inline4 DOHC 4v VTEC
Honda B16A4 1595cc Inline4 DOHC 4v VTEC
Honda B16A6 1595cc Inline4 DOHC 4v VTEC
Honda B17A1 1678cc Inline4 DOHC 4v
Honda B18A 1834cc Inline4 SOHC 4v
Honda B18A1 (USA) 1834cc Inline4 DOHC 4v
Honda B18B1 1834cc Inline4 DOHC 4v
Honda B18B2 1834cc Inline4 DOHC 4v
Honda B20A3 1958cc Inline4 SOHC 3v
Honda B20A4 1958cc Inline4 SOHC 3v
Honda B20B3 1973cc Inline4 DOHC 4v
Honda B20B4 1973cc Inline4 DOHC 4v
Honda B20B8 1973cc Inline4 DOHC 4v
Honda B20Z2 1973cc Inline4 DOHC 4v
Honda ES 1829cc Inline4 SOHC 3v
Honda ET 1829cc Inline4 SOHC 3v
Honda F18B 1850cc Inline4 SOHC 4v
Honda F20B3 1997cc Inline4 SOHC 4v
Honda F20B5 1997cc Inline4 SOHC 4v
Honda F20B6 1997cc Inline4 SOHC 4v

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More Performance Parts Available

We supply engine bearings, pistons, rods, gaskets, brake pads, discs, calipers, flywheels, clutches and more. Message us with your vehicle info to confirm compatibility.

We may request vehicle details after checkout to ensure the correct part is supplied.

⚠️ Please send your vehicle details / registration before ordering so we can check fitment and compatibility.

Images are for reference only. Actual product may vary depending on manufacturer batch.