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Old 12-02-2024, 01:42 PM #1
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Idler Pulley part numbers
Hey guys, the idler pulley part numbers are all over the place. I just spent 2 hours trying to find what I need to order just resulting in frustration. I have a 2014 Trail (build in 11/13 if that matters). I have found results indicating the following part numbers:

16603-0P030 (x1) 16604-31030 (x2) From forum

16603-31040 (x1) 16603 31050 (x2). From forum

16603-31040 (x1) 16604-31020 (x2) (from Vikings garage)

Any assistance would be greatly appreciated!
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Old 12-05-2024, 12:58 AM #2
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You saw this thread?
Idler Part Numbers

The Toyota parts website pretty much sucks now. Once you’ve figured out what “mark” your pulleys have then you can check older parts websites like Conicelli to check fitment.
The correct ones for my truck ended up being these…
Idler Pulleys
2 - number 2's - 16604-0P011
1 - Number 1 - 16603-0P030

Accessory Drive Belt Tensioner - 1662031051
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Last edited by 1000MPH; 12-05-2024 at 01:05 AM.
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