ACL Race Conrod bearings BMW M20/50/52/54 (.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: 
6B1490H
Bearing size: 
.25
Bearing half type: 
Identical halves
Bearing material: 
F781
Technical data (mm)
Max overall length: 
18
Max shaft size: 
 44.991
Max tunnel size: 
48.016
Max vertical oil clearance: 
0.077
Max wall at crown: 
1.49
Min shaft size: 
44.975
Min tunnel size: 
48
Min vertical oil clearance: 
0.029
Technical data (in)
Max overall length: 
0.7087
Max shaft size: 
1.7713
Max tunnel size: 
1.8904
Max vertical oil clearance: 
0.003
Max wall at crown: 
0.0587
Min shaft size: 
1.7707
Min tunnel size: 
1.8898
Min vertical oil clearance: 
0.0011
Engine code
M20B20 / M20B23 / M20B25 / M20B27 / M50B20 / M50B20TU / M50B25 / M50B25TU / M52B20 / M52B20TU / M52B25 / M52B25TU / M52B28 / M52B28TU / M54B22 / M54B25 / M54B30
Application
BMW M20B20 1991cc Inline6 SOHC 2v
BMW M20B23 2315cc Inline6 SOHC 2v
BMW M20B25 2494cc Inline6 SOHC 2v
BMW M20B27 2693cc Inline6 SOHC 2v
BMW M50B20 1991cc Inline6 DOHC 4v
BMW M50B20TU 1991cc Inline6 DOHC 4v
BMW M50B25 2494cc Inline6 DOHC 4v
BMW M50B25TU 2494cc Inline6 DOHC 4v
BMW M52B20 1991cc Inline6 DOHC 4v
BMW M52B20TU 1991cc Inline6 DOHC 4v
BMW M52B25 2494cc Inline6 DOHC 4v
BMW M52B25TU 2494cc Inline6 DOHC 4v
BMW M52B28 2793cc Inline6 DOHC 4v
BMW M52B28TU 2793cc Inline6 DOHC 4v
BMW M54B22 2171cc Inline6 DOHC 4v
BMW M54B25 2494cc Inline6 DOHC 4v
BMW M54B30 2979cc Inline6 DOHC 4v
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