ACL Race ConConrod bearings Honda A18 / A20 / B16 / B17 / B18 / B20 (.25)

ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings.
Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers.
Bearing data
Part number: 
4B1946H
Bearing size: 
.25
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: 
0.767715007
Max shaft size: 
1.771650016
Max tunnel size: 
1.890704897
Max vertical oil clearance: 
0.00425196
Max wall at crown: 
0.059212481
Min shaft size: 
1.770862616
Min tunnel size: 
1.889760017
Min vertical oil clearance: 
0.00192913
Engine code
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
Application
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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