427 GM Oil Pump - #3964255 vs GM Oil Pump - #3946023

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427 GM Oil Pump - #3964255 vs GM Oil Pump - #3946023

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01-15-2019, 01:35 AM

68 DANA 68 DANA is offline

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I received clarification on the differences. It appears that GM #3964255 is the correct oil pump that I need to located for the GM Deep Oil Pan #3879633.

GMPARTSWIKI lists the following description for the associated part numbers.

#3964255 Pump ASSY. (Oil) (Deep Oil pan Only)

#3946023 Pass. 396, Pump ASSY Oil

Thanks !

Last edited by 68 DANA; 01-15-2019 at 01:59 AM. Reason: Added Description

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