What is a “Y-pipe”?
What is a “Y-pipe”?
That is the exhaust pipe that (front to back) splits one-into-two under the firewall to the left and right sides of the engine and then each side splits into front and rear cylinders.
Back in the early 1990s it was the single most expensive ehaust part in the foriegn-auto-parts catalog I checked. They’re all stainless-steel now so it’s unlikely to fail until the car is very old — by then if the car isn’t worth a lot, it ain’t worth a Y-pipe...