heater hoses

[giovannie23]

Does anybody know what size all the heater hoses are
Or are they specific part numbers for each hose
Thanks

 

[frodiesel]

Go oem. They are specific. Check out all the tight radius bends, they are prebent like that, if you just go get some parts store hose it will kink, cause air bubbles, headgasket failure, or worse.

 

[gamefreakgc]

Yeah, with most pre-molded hoses it's hard for your average parts store to have a match. Especially the less common ones (radiator hoses you can usually find). The dealer is crazy expensive though, I just paid $17 for a PCV hose that's 6 inches long

 

[Troybylt]

They have specific part numbers for each, if you try to replace the hoses with straight tube you're most likely going to end up with pinch points that restrict flow. The heater hoses, well really all hoses, on our trucks are molded and formed from the factory to conform to very specific routes and curves.

Check out oemtoyotapartsgroup.com for a schematic of our trucks and you can pull part numbers for each there, then take those numbers to a dealer or cross reference online for aftermarket. Your last option is to find good ones on a junkyard rig, but that's hit or miss.

 

[giovannie23]

i started looking into the part numbers and found out
there are 2 different part numbers for the same hoses
example like hose 87245b on the diagram
has two different part numbers
8724535630
and
8724535690

the difference is
"vzn and rzn"

anybody know the difference between the codes above?

 

[Magmotor]

Engine codes

RZN18 and VZN18 are engine codes. RZN18 is the 2.7L and VZN18 is the 3.4L..

 

[giovannie23]

RZN18 and VZN18 are engine codes. RZN18 is the 2.7L and VZN18 is the 3.4L..

thanks dude!!