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Question: Oil pan drain plug size

killain

killain

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Joined
Feb 8, 2004
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1,102
Location
Southeast, PA
Corvette
2003 50th Annversary Red coupe, beautiful !
Does anyone know what size the oil pan drain plug is on a LS1 engine? M12.150 or M14. 175 Or. . . ? Thank you
 
the parts manual shows:
M12X1.75-6G THD. 44.45MM LNG, 25MM FLG HEX
Does this help?? It doesnt match your numbers.
 
15mm
 
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