Good question, what is this?

773314

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765258

{"replyTo":"

518050 发表于 2019-12-14 20:19:55 A height scanner?? You got me, idk

","text":"It’s the new mandatory emissions filter system ","replyToPid":281884}

889423

{"replyTo":"","text":"Hillbilly scanner for UFOs ","replyToPid":0}

935363

{"replyTo":"","text":"it's where the lube is stored so when I sit on top it doesn't hurt as much","replyToPid":0}

674254

{"replyTo":"","text":"Looks like one of those sirens for tsunami alerts ","replyToPid":0}

765258

{"replyTo":"

518050 发表于 2020-03-11 22:58:02 Ain’t gonna lie I didn’t even realize it was on top of the smoke stacks. I thought the truck was going between two poles with that on top

","text":"There made of plastic I’m surprised they can take the heat ","replyToPid":342245}

312224

{"replyTo":"","text":"Silencers ","replyToPid":0}

672201

{"replyTo":"","text":"https://drive.google.com/file/d/1PG35YOLrFcUX6CwP51OzODweSmQVUGoN/view?usp=drivesdk","replyToPid":0}

1011970

{"replyTo":"

765258 发表于 2020-03-11 16:55:07 It’s the new mandatory emissions filter system

","text":"close like a oil refinery that has the flame outs for fuel vapers or if someone really messes up so they vent off fuels and fumes in a hurry makes a giant flame up to 100ft tall or more.","replyToPid":342118}

518050

{"replyTo":"","text":"A height scanner?? You got me, idk","replyToPid":0}

518050

{"replyTo":"

765258 发表于 2020-03-11 16:55:07 It’s the new mandatory emissions filter system

","text":"Ain’t gonna lie I didn’t even realize it was on top of the smoke stacks. I thought the truck was going between two poles with that on top","replyToPid":342118}

518050

{"replyTo":"

765258 发表于 2020-03-11 23:46:39 There made of plastic I’m surprised they can take the heat

","text":"I’m sure something melts of off the inside and then falls inside the base and melts to the bottoms of the stack causing a block. I would be considerate and cautious before putting this on my truck. Just saying","replyToPid":342266}