I was fitting an accelerator cable and leaned on and cracked this plastic pipe which must have gone brittle.
Not being given to the spending of money I cast my eyes around the workshop and found a length of 8mm copper of exactly the right length. I carefully bent the pipe and just as carefully broke the clips on the air cleaner box so had to make a clip. I soldered on with high melting point solder a couple of olives close to the ends. I polished it and gave it a couple of coats of lacquer. Zero cost fix...well it was to me!