What is the size of the bolt that goes on the bottom of the alternator for a mithsubishi galant 2001 I'm asking for the length and what kind of thread is it

You would need a parts diagram for that specific vehicle to identify each bolt, generally you need a dealership parts catalogue.

It seems overwhelming but it's just a small puzzle. We used to call this a "basket" case.

You are going to need a specific amount of bolts that are the same for each group. Separate the bolts you have into piles of similar lengths and sizes.

Of course you will need to try each bolt hole by hand to prevent installing the wrong threads as well as making sure the bolts you use are the correct length. By determining the length and size you should narrow you hunt down. FOR EXAMPLE: you will need 3 here of the same size and length, 5 there that are long and 2 short, 4 there, etc., Just like you identified the long mount bolt. You can also identify where bolt heads were installed by size and the imprint left from where they were removed.

It's not really that difficult since the bolts are always different lengths and sizes, just don't put a long bolt into a short hole. (measure with a small screwdriver to get the length and make sure your bolt is never longer than the room available and the threads fit.)

Good luck!

We have no way to look this kind of info up for anything this old.

Use one of the other alternator bolts for testing, see if the threads are the same on the other bolt hole. If the bolt is a little long or short, just get a different length bolt from the hardware store.

If nothing else, use a tap and die set. If enough meat around the hole, drill the hole and retap the threads. Just a thought.

You didn't give year--make--model?

No one will have that info

A long shot-- would be to spend time at
a dealers parts dept & look at the computer,
for the answer

DO NOT-- buy bolts from a dealer at $8.00 to $15.00 ea,
when Lowes,Sears Hardware,etc, have them in Metric,all sizes
& lengths for .70 ea

check the pulles them self on may be getting bound up and their for not spinning and causeing the belt to brake.

ok this is tough, im assuming the bolt has broken and your left with the removel of the threaded end of the bolt. the only thing i can think of is to drill out the center of the bolt with a smaller sized drill bit about 2 to 3 sizes smaller than the actual bolt shaft [make sure you center the hole as best you can so not to marr the threads so the new bolt will tighten properly] this will take alot of cutting oil as you drill try to go in at least half the bolt length. then you will need to tap the new hole with a LEFT HANDED TAP slighty bigger than the drill bit used to make the hole. [ again i dont know the size of bolt we are talking about] then with a left handed bolt start the bolt in your new threades. because you are tightining turning to the left as the new bolt bottoms out it will be loosening the broken bolt. i dont know how much room you have i beleave this is on the backside of the motor.. again i hope this helps i have done this before on various equipment and it works for me [most of the time] good luck

just go to a salvage yard or junk yard and ask them to get a bolt from them in one of there cars of your make and model and year so they might just give it to you for free if they have your car there. Also autozone might help in telling you the bolt size too.

It can be tough keeping them all straight in order. The bolt that needs the 47 star socket goes on top just to the right of the hose behind the pump. I can't tell you all their lengths but they should all be the same thread and bolt size. Just try them with the pump held in place before you put any sealant on the gasket. Each should have at least a half an inch of so of length sticking out for tightening purposes.
I write on the heads with permanent marker as I take them out going clockwise. Just remember where number one goes and the rest follow in order.

It pays to clean off the threads with a wire brush. Some of them get pretty grungy.

I do not know,but 8mm is used most,the length you may can figure out,but go to the parts house,and ask for2 bolts 8mm 1.25 thread,at 25 mm long,and ask for 8mm 1.50 thread,and 25mm length,and cover your bases,they are not that high in price,if some one has them,this way you can go by this,Look at the e g r valve to make sure you can get the bolts in the holes of the e g r valve,cause the heads of the new bolts will ,no doubt be larger than the ones that came out of it,the bolts are a general,or generic if you will,and will work if you can get them in the e g r valve,and use a wrench to screw them in,