ACL Race ConConrod bearings Ford / Mazda Duratec / LF MZR (.025)

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: 
4B4390H
Bearing size: 
.025
Bearing half type: 
Identical halves
Bearing material: 
F781
Technical data (mm)
Max overall length: 
16.25
Max shaft size: 
47
Max tunnel size: 
50.045
Max vertical oil clearance: 
0.075
Max wall at crown: 
1.503
Min shaft size: 
46.98
Min tunnel size: 
50.025
Min vertical oil clearance: 
0.019
Technical data (in)
Max overall length: 
0.639762506
Max shaft size: 
1.850390017
Max tunnel size: 
1.970271668
Max vertical oil clearance: 
0.00295275
Max wall at crown: 
0.059173111
Min shaft size: 
1.849602617
Min tunnel size: 
1.969484268
Min vertical oil clearance: 
0.00074803
Engine code
Duratec 20 / LF MZR
Application
Ford 121ci (2.0L) Duratec 20 Inline4 DOHC 4v
Mazda LF MZR 1998cc Inline4 DOHC 4v
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