| This listing is for the lower thermostat (t-stat) housing for all 70-72 240 z's. It also fits the PL510, 520, 521, and 620 trucks that use the L-4 engine. It will also fit the 73-74 z's if you install the nipples and hose for the 72-240 on your 73-74 engine. Be advised that this housing does not come with any hardware or t-stat. Those must be ordered separately. See listings. Other things you may need for this housing are: thermostat, gaskets, mounting bolts, upper housing, upper housing bolts, coolant nipple, temperature sender, and temperature sender retaining nut. If you need any help in that department and can't figure it out feel free to contact us directly or put a note in the comment section of the order form stating your wishes. We can add things to your order from our end at your request. If we happen to be out of stock please allow an extra week for delivery. Last update 05/10 | 
