Oil Bolt Size

01z71 · February 23, 2004

I have an '01 z-71 with the 5.3 motor. I messed up the head on my oil bolt and want to go to the auto store and get a new one. Any idea what size thread it is? I didn't strip the threads just the head of the bolt. I couldn't find the info. in my owner's manual.

Thanks

MN Z-71 · February 23, 2004

I dont know what thread size it is...but I was able to get a drain plug (not oil bolt...you say that and they'll start lookin at you funny) for my truck from NAPA. All I had to do was tell them make, model, year, and engine.

Not quite sure how you managed to mess up the head of the plug. What size socket are you using? Keep in mind that it is metric.

TROYROBO · February 23, 2004

15 milimeter

NothinButBowTies · February 23, 2004

Ya its 15mm but the stupid thing says 1/2 on the bolt. Now who thought that up?

atomoverride · February 23, 2004

to be 100% sure you should call the dealership and have them look up your vin# they will be the only way to be 100% sure.

mhraracing · February 24, 2004

Ya its 15mm but the stupid thing says 1/2 on the bolt. Now who thought that up?

yep ...15mm is right....I think the 1/2 in on there because the theads are 1/2inch 14.

I think ??

99-2door · February 24, 2004

to be 100% sure you should call the dealership and have them look up your vin# they will be the only way to be 100% sure.

What??

No need to do that, all the engines use the same plug. Just go to any parts store, tell them your make & model and they can hook you up.

1stfullsize · September 28, 2006

I have a 00 Ext cab silverado...

Hey what is the size of the stock oil drain plug. It's not 15 mm. I'd say closer to 20mm. 18 is too small.

seadoons · September 28, 2006

18MM works for me...2002 model

saltwater_addict · September 28, 2006

2000 z 15 milli

1stfullsize · September 29, 2006

maybe I'm looking at the wrong one..

pm26 · September 29, 2006

Go to the dealer and get a new one. If you get a universal oil drain plug, even if it fits, it may not be exactly the same and the sealing gasket may not seal properly. It is not worth trying to save a dollar in this case.