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SAE J129 (MAR2024)

Current Revision

Engine and Transmission Identification Numbers


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This SAE Recommended Practice has been established to provide direction for the design and installation of an identification number (IN) as assigned to vehicle engines, transmissions, and transaxles. The IN is used for tracking or traceability of these components. In adhering to these recommended practices, facility of application in factory production and appearance quality are matters for manufacturer control. Reference SAE J853.

SDO SAE: SAE International
Document Number J129
Publication Date March 18, 2024
Language en - English
Page Count
Revision Level 202403
Supercedes
Committee
Publish Date Document Id Type View
March 18, 2024 J129_202403 Revision
Aug. 5, 2010 J129_201008 Revision
Dec. 1, 1981 J129_198112 Revision
Dec. 1, 1969 J129_196912 Revision