1HD-FTE - What's this gold cylinder on the fuel line?

[Shinook]

I haven't found this in any other engine photos and the bar code doesn't bring anything up:

I also couldn't find any writing on it or logos, seems they faded off over the years. Anyone know what this is for?

 

[45Dougal]

Aftermarket fuel line preheater?

 

[Shinook]

Aftermarket fuel line preheater?

Possibly. I'll look around and see, thanks.

Car has snow tires on it, so that's a good possibility.

 

[yannrg]

Hi !, it appears like an external and pretty sure it's an aftermarket "filtering device".