I never said anything about 3/8. OEM for your year if it has the original motor is 3/8 npt on the block and 1/2" lines that use 3/4-16 Tub-O fittings in the cooler. Aftermarket cooler we sell is 1/2" npt with 5/8 lines and fittings for which ever block you have.
Greg
The fittings for that cooler are 3/4-16 Tub-O fittings. If you need one right away I think a junk is going to be your best bet. You won't find a cooler off the self.
http://www.lubricationspecialist.com/gm-6.5td/6.6l-diesel/
Greg
For those that have been waiting patiently we now have the Duramax Universal Fuel Filter Kit back in stock.
http://www.lubricationspecialist.com/gm-6.5td/6.6l-diesel/duramax-universal-fuel-filter/
Greg
For those that have been waiting patiently we now have the Duramax Universal Fuel Filter Kit back in stock.
http://www.lubricationspecialist.com/gm-6.5td/6.6l-diesel/duramax-universal-fuel-filter/
Greg
We have what ever you need to get you up and going. Can do lines only or cooler and lines. What it takes we have them. Everything is in stock and ships same day. Can ship any method you wish.
http://www.lubricationspecialist.com/gm-6.5td/6.6l-diesel/96-and-ealier-6.5td-oil-cooler-lines/...
Updated pricing on your 97 and newer engine oil cooler lline kit. Now $149.95, kit includes o-rings for the filter adapter.
http://www.lubricationspecialist.com/gm-6.5td/6.6l-diesel/97-and-later-6.5td-oil-cooler-lines/
Greg
When using dope be sure to let it set over night. Tape will desolve over time and leak too. Permatex makes a good pipe dope. Its blue and sets up hard as a rock. Only issue is if you ever need to remove the fitting.
Greg
We now have a lines only kit for all 1998 and most 97 GM 6.5TD. If you have and earlier truck or van with the smaller 1/2" lines you need our OCLK95 kit.
Kit is complete with cooler adapters, lines and block fittings. Hoses are stainless steel braided Teflon lined.
1998 and new a most...
New kit for those that want to replace oil cooler lines only. You know longer have only one supplier for such a kit.
This kit is for the older models. New model kit will be available in a week or so...