Clutch fork boot replacement question

Is there any particular reason why this boot doesn't create a better seal against the clutch fork? It seems like a likely spot for water ingress. Are there better sealing boot options or is this a necessary feature for cooling or something?

I checked for replacement boots without the vent and better sealing against the fork. For instance, a 1981-1995 Toyota pickup boot looks like this. No vent and a perfect c-shaped cutout to match the shape of the fork. Seems better imo.

Thanks all

 

Toyota works in mysterious ways that take absolutely a very long time frame for change..lol but they tend to continually improve on parts..you may look a few years ahead of your truck to see if there's an updated part.. perhaps there's was a problem with water not being able to drain out of the boot causing corrosion problems bigger then the occasional splash of water getting in..everything is for a reason..although we may not know the reason..

 

That's an interesting line of thinking. I wouldn't assume Toyota engineers would purposely change such a small component if there weren't a good reason to. Perhaps the modern clutches require greater airflow for cooling purposes. Who knows?

 

Water intrusion there is a non issue, the bell housing on most vehicles are far from sealed. If you’re in water deep enough to get into the clutch fork boot, you’re already getting water in there elsewhere. Most inspection covers don’t seal tight and many even have vents in them.

 

Noted