I'm getting ready to do my timing belt replacement. One of the things I'm going to do at the same time is to replace ALL of the rubber water and vaccum lines. My question is, Are the by-pass hoses and the heater hoses generally the same thing? CourtesyNissan has a by-pass hose kit consisting of 12 hoses. Kragen parts on-line has 15 different hoses called out under heater hoses. I'm leaning towards buying the Courtesy kit, but alot of the hoses look like straight pieces that can be cut from a length.

If any of you have done this yet/recently (91?), do you specifically know what diameter the heater hoses are? ....... the PCV hoses? ....... Vaccum lines?...... IACV/AAV hoses? I'm planning on the red silicone vaccum hose.

Thanks.......

 

The hoses that run to and from the heater core should just be bought from Courtesy. They're a very unique shape. The vacuum hoses are all 3-4mm and 6 mm. I used all 3mm and 6 mm. I believe all of the coolant hoses are also 6mm. A couple of the PCV hoses are different sizes at each end, so just buy the hoses from Courtesy.