What's this part

Any one know what this part is, and function? 2024 Toyota Tacoma sr5

 

Air release/vent valve... Typically for your rear diff. Can't remember off the top of my head the other possible locations that have one? Those might be for transmission, front diff or transfer case?

 

https://www.tacomaworld.com/threads/front-diff-transfer-case-and-auto-transmission-breathers.480713/

 

Thank you for your input! Appreciate the knowledge. Was def curious!

 

On the 2nd gens, the rear diff breather was located just above the axel. Therefore, if you did any water crossings, there was risk of getting water into your diff. Lots extended the breather up behind the rear tail light...

 

Those are the breathers for the front diff and transfercase. The rear diff doesn't get a hose. It has one of those silver check valves mounted on the axle.

 

Annnndddd, one of the first things I'm gonna have to fix. Damn, I'd hoped this wasn't still the case.

 

What's the solution you have in mind? I do some frequent water crossings in my 24 Taco and didn't realize going axle deep would jeopardize my rear diff.

 

People use automotive hose to move the breather up to the rear tail light or gas tank door area.

 

Thanks for that tip. Looks like I got something to do with the rest of my day then.

 

I had to move all of the breathers up on my 2004 for this reason. I cross a couple of pooled rivers to get to certain caves here in middle TN, with the water above the wheels- and definitely above the breathers for the 2004 axles and transmission/transfer. The first couple of times i caught the water and swapped all the fluids. One time the wife swam the truck and didn't say anything- we ended up replacing the transmission due to the 1st gear syncro rusting and going out. Now all the breathers are high up. I had to get an adapter for the hole in the axle (I can't remember now, but another non-us car had a thread to tube adapter that everyone was using at the time, and I used that, run a soft hose up to the inside top of the bed rails. ARB makes a bolt on breather solution which is likely what I will do with my 2024 when it arrives. I don't want to buy another transmission.

Also- something to think about- I have had frequent issues with the rear axle locker that stem from corrosion on the connector leading to the servo that actuates the locker. This is also caused by the swimming. As the truck gets older, and you finally start having connector based issues (similar to the fan vent thing) dielectric grease and periodic replacement of the connector orings frequently exposed to deep water is a good idea.