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ACL 5M1947A-STD is a main bearing set selected by its complete manufacturer number and engine-build specification. STD manufacturer size designation; verify the exact engine and assembled clearance.
Bearing Configuration
The manufacturer catalog identifies slotted bearings for 5M1947A. In its selected H22A4/H22A5 application group it distinguishes the through-December-1997 5M1947A arrangement from the 1998-on 5M1957A family. Verify the actual block, crankshaft and slot configuration before selection.
This is the A-suffix replacement bearing configuration. Do not substitute a Race Series H or HX bearing without checking the dimensional and clearance requirements.
Engine Application
Select this bearing by the exact 5M1947A-STD catalog application and engine measurements. Confirm the engine code, bearing location, size and mating dimensions before ordering. Previous machining or an engine swap can change the required configuration.
Specifications
| Brand | ACL |
|---|---|
| Manufacturer Part Number | 5M1947A-STD |
| Catalog Main Housing Bore (STD journal) | 54.000–54.020 mm |
| Catalog Main Journal Diameter (STD) | 49.980–50.000 mm |
| Component | Main Bearing Set |
| Size Selection | STD manufacturer size designation; verify the exact engine and assembled clearance. |
Quantity and Assembly Checks
Confirm the set contents, bearing positions and any separate thrust components against the complete manufacturer number. The photo is representative of the part family.
Measure shaft journals, housing bores and assembled oil clearance using the engine builder’s specification. Check oil-hole alignment, groove placement and crankshaft fillet clearance before final assembly. Catalog standard dimensions must not be treated as the finished dimensions for a different repair size.
Frequently Asked Questions
Is the year and model enough to choose this bearing? No. Match 5M1947A-STD to the exact engine and measured build specification.
What size is this listing? STD manufacturer size designation; verify the exact engine and assembled clearance.
Can I substitute a different suffix? Compare the complete grade, size, locating features and assembled clearance before substituting any bearing.
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