ACL Race Main bearings BMW M40/42/43/44 (.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: 
5M1538H
Bearing size: 
.25
Bearing half type: 
Upper & lower
Bearing material: 
F780
Technical data (mm)
Max overall length: 
20
Max shaft size: 
 59.99
Max tunnel size: 
65.019
Max vertical oil clearance: 
0.088
Max wall at crown: 
2.488
Min shaft size: 
59.971
Min tunnel size: 
65
Min vertical oil clearance: 
0.034
Technical data (in)
Max overall length: 
0.7874
Max shaft size: 
2.3618
Max tunnel size: 
2.5598
Max vertical oil clearance: 
0.0035
Max wall at crown: 
0.098
Min shaft size: 
2.3611
Min tunnel size: 
2.5591
Min vertical oil clearance: 
0.0013
Engine code
M40B16 / M40B18 / M42B18 / M43B16 / M43B18 / M43B19 (TU) / M44B19
Application
BMW M40B16 1596cc Inline4 SOHC 2v
BMW M40B18 1796cc Inline4 SOHC 2v
BMW M42B18 1796cc Inline4 DOHC 4v
BMW M43B16 1596cc Inline4 SOHC 2v
BMW M43B18 1796cc Inline4 SOHC 2v
BMW M43B19 (TU) 1895cc Inline4 SOHC 2v
BMW M44B19 1895cc Inline4 DOHC 4v
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