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Discussion summary
YOUR RESEARCHIdler pulley bolt part number help
Leading reported evidence
Replace with new hardware and torqued them all
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
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1
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Performed · outcome unconfirmed · Original poster
Replaced with new hardware and torqued them all to spec.
Leading evidence: 'Replace with new hardware and torqued them all' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace with new hardware and torqued them all' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
I think i used an 8 while waiting for the proper factory bolt.
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Suggestion
You can also get a similar/same bolt and use a washer but i wasnt sure of the class of bolt (5 or 8 likely).
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6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Car is a 2003 Targa Tiptronic.
Thanks to shearing a bolt during my water pump job, I need to order parts 12, 13, and 14 in the diagram below. Problem is, I can't figure out part #14 (the bolt).
The first #14 says it's been superceded by part 90037815001, an 8x55 bolt. But then there are two other part numbers, one is also a 8x55, while the other is an 8x60.
How do I determine which I need?
Same happened to me. At the parts counter at the dealer i just tried to order both. One wouldnt let them order. Fair warning, the bolt looks a bit different than the old one but works fine. List was $5 or so.
You can also get a similar/same bolt and use a washer but i wasnt sure of the class of bolt (5 or 8 likely). I think i used an 8 while waiting for the proper factory bolt.
Glad you got it out.
#1 - you can use any bolt of the proper length, size, thread pitch & grade
#2 - when you measure length it should be from the bottom of the head to the end of the threads (in the photo you�re measuring from the top of the head). * the length of these bolts are critical - if you use one that�s to long for the spot it�s going in you can penetrate a water jacket or oil galley�
there are several different lengths on the water pump so he careful they stay in their proper positions.
#3 - Torque to proper spec�
Appreciate the info, particularly for how to measure the bolt. I've gone my whole life apparently not knowing that.
I found whomever did the water pump replacement previously only used one long bolt, not two. I removed six shorter bolts, and one long one. Replaced with new hardware and torqued them all to spec.
The idler pulley bolt wasn't torqued at all. I was able to remove it with my hand, which was alarming. When I torqued it back down it sheared almost immediately. Not sure if it was already weakened or what, but regardless, new bolt and pulley on the way.
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