I just replaced the radiator, water pump, thermostat, temp sensor, belts, spark plugs and wires on my 89 pickup. These two smaller hoses (pictured below) cracked around the ends on removal, and I think it may be causing an air leak. Cold idle is fine, but once at operating temperature, it has a rough idle. What is the proper name for those hoses? Any suggestions on where to pick them up/part numbers would be appreciated, too. Thanks!

 

Both of those hoses show as discontinued on Megazip (toyota parts site). Megazip calls it Manifold Air Injection System, but I believe I have also seen it called the PAIR system (something like pulsed air injection). One of the hoses has part number

17341-35150 and the other 17342-35120.