ACL Race ConConrod bearings Ford / Mazda Duratec / LF MZR (HX-STD)
ACL

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Write a reviewACL 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: 4B4390HX
Bearing size: STD
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: 0.099
Max wall at crown: 1.49
Min shaft size: 46.98
Min tunnel size: 50.025
Min vertical oil clearance: 0.043
Technical data (in)
Max overall length: 0.6398
Max shaft size: 1.8504
Max tunnel size: 1.9703
Max vertical oil clearance: 0.0039
Max wall at crown: 0.0587
Min shaft size: 1.8496
Min tunnel size: 1.9695
Min vertical oil clearance: 0.0017
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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Guides & Info
Engine code | Duratec 20 |
Engine code | LF MZR |
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