Part number 5M1538H-0.25
ACL Race Series main bearings
BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)
ENGINE BEARINGS | ||
MAIN BEARING SET |
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Part# | ||
5M1538H |
5M1538HX |
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Sizes | STD, .025, .25, .50 | STD |
Oil Clearance | Standard | + 0.001" Extra |
Half Type | Upper & Lower | |
Material | Tri-metal | |
Min Std Shaft Size | 2.3611in / 59.971mm | |
Max Std Shaft Size | 2.3618in / 59.990mm | |
Min Std Tunnel Size | 2.5591in / 65.000mm | |
Max Std Tunnel Size | 2.5598in / 65.019mm | |
Max Wall at Crown | 0.0980in / 2.490mm | 0.0930in / 2.478mm |
Max Overall Length |
0.787in / 20.00mm #1,2,4,5 0.982in / 24.94mm #3 thrust |
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Notes | ||
Diagram |
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Manufacturer: ACL Bearing Company
Part number: 4B1490H-STD
For BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)
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Quantity | 4 | ||||||
Crankshaft | 44.991 / 44.973 | ||||||
Housing | 48.001 / 48.016 | ||||||
Max Wall | 1.491 | ||||||
Max Length | 18.001 |
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Quantity | 1 | 4 | ||||||||||||
Crankshaft | 59.990 / 59.972 | 59.990 / 59.972 | ||||||||||||
Housing | 65.001 / 65.019 | 65.001 / 65.019 | ||||||||||||
Max Wall | 2.494 | 2.494 | ||||||||||||
Max Length | 25.039 | 19.969 |