A NAPA 1040 or the NAPA 1036 will do.
try google picture just type and it should pictures
A 2000 Chevrolet blazer with a 4.3l V6 would have come with a spin-on style filter. If you go to your local parts store, a WIX brand filter would be a part number 51036
Originally it would have had DexCool.
low beam headlight bulb type: 9006
Dot 3 will be just fine.
dextron mercron
If the Blazer is gasoline powered the antifreeze can be any kind that is for sale for gasoline powered vehicles.
It depends on the climate but a 5W-30 works in most cases.
A/T uses Dexron III
Look under/behind the front bumper. You have to open a trap door type thing.
It depends on your climate but in most cases it would take 5W-30.
r134