Anybody know what kind ofbolt I need to bolt the transmission dipstick house to the engine on a 96 4tunner

 

Likely a M8x1.25.....pickup a small Metric assortment at the hardware store and give 'em a try. I believe the stock one may have a washer integrated on it too. Your local Toyota dealer is good for small doodads like this.

Welcome to YT!

 

I tried calling my local Toyota and they acted like i was speaking gibberish. i found out a 5/16 fits pretty tightly, weird because this things all metric