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Edelbrock 54903U is an RHS A357-T6 aluminum LS engine block with a standard 9.240 or 9.250 inch deck and 4.120 inch bores supplied ready for final honing. Confirm the exact manufacturer part number and all current specifications before ordering.
Fitment
Select this component by exact part number, dimensions, engine or system architecture, and mating components. No broad year-make-model claim is used where the manufacturer does not publish one.
Specifications
| Brand | Edelbrock |
|---|---|
| Manufacturer Part Number | 54903U |
| Product Type | Engine Blocks |
| Fitment Type | Fitment Verification Required |
| Condition | New |
What's Included
One new Edelbrock engine block identified by manufacturer part number 54903U in the configuration shown. Hardware or companion parts are included only when expressly stated by the manufacturer.
About Edelbrock
Edelbrock manufactures automotive performance and replacement parts identified by exact part number, specifications, and published application data.
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Frequently Asked Questions
How do I confirm 54903U is correct?
Select this component by exact part number, dimensions, engine or system architecture, and mating components. No broad year-make-model claim is used where the manufacturer does not publish one.
Are similar-looking parts interchangeable?
No. Match part number 54903U, dimensions, configuration, included components, and every current manufacturer note.
What is included with this listing?
One new Edelbrock engine block identified by manufacturer part number 54903U in the configuration shown. Hardware or companion parts are included only when expressly stated by the manufacturer.
Installation
Follow the current Edelbrock instructions for part number 54903U. Verify fit, clearance, system specifications, fastener torque, and safe operation before use. Professional installation is recommended when specialized tools, alignment, calibration, or fabrication are required.
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