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Valve Stem Caps

Discussion in 'Roadster' started by dhrivnak, May 23, 2012.

  1. dhrivnak

    dhrivnak Active Member

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    A valve stem cap has been lost and it seems like Tesla has a nice aluminum cap with a gasket. I have not had much luck in finding a replacement. Has anyone had any luck in finding a replacment cap? I am sure I am not the first owner to have one gone missing.
     
  2. Lloyd

    Lloyd Active Member

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    Here you go, Your choice of colors!

    http://www.amazon.com/s/?ie=UTF8&keywords=aluminum+valve+stem+caps&tag=googhydr-20&index=automotive&hvadid=19567103147&hvpos=1t1&hvexid=&hvnetw=g&hvrand=17540034821305946146&hvpone=&hvptwo=&hvqmt=e&ref=pd_sl_3jyv7xr0fh_e
     
  3. chris22104

    chris22104 Member

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    Check out the "blue rockets" on the bottom of that amazon link; I think they would be the best for your blue roadster!:biggrin:
     
  4. dhrivnak

    dhrivnak Active Member

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    I saw those and I am not sure they quite fit the bill. The chrome caps with a gasket have several comments about how the caps corrode to the valve stems. Some of the Al ones says they are just covers over standard rubber caps and another said they can't be used with aluminum valve stems which is what I think the Roadster uses. Maybe I am over analyzing but not sure many of these would do more damage than good.

    But thanks to the link I think I found the right ones, but the minimum quantity is 50.

    TPMS Aluminum Sealing Valve Cap - 50 Pcs. by Dorman - OE Solutions (part#609-131)
     
  5. wiztecy

    wiztecy Active Member

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    #5 wiztecy, May 23, 2012
    Last edited: May 23, 2012
    Here's half the price and free shipping on eBay. You still get 50... sell them a buck a pop back on ebay and make more than double your money back. Just make sure to offer discounts for TMC the members you know ;) ...they'll make great Xmas gifts too!

    Tire Pressure Monitoring System (TPMS) Valve Cap Dorman 609-131 | eBay


    Here's the direct seller's profile in case the link above expires... which it will.

    http://myworld.ebay.com/ecaronline/?_trksid=p4340.l2559

    Couple of dollars more on Amazon for 50 (Free Prime shipping):

    Amazon.com: Dorman 609-131 Aluminum Tire Valve Caps - Pack of 50: Automotive
     
  6. doug

    doug Administrator / Head Moderator

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    Tesla won't just send you a few for free?
     
  7. dhrivnak

    dhrivnak Active Member

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    I guess I did not want to bother Tesla as I save them for bigger things, like the lumbar air bladder in my seat will not hold air. With the closest store 410 miles away I just can't drop by. But I bought them on e-bay so I have plenty to sell if others need any. I should be able to do $5 for aset of 4 domestically. Thank you Wiztecy!!
     
  8. chris22104

    chris22104 Member

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    I was joking about the blue rockets! Are these (Dorman caps) the exact same as what come on the car from the factory?
     
  9. dhrivnak

    dhrivnak Active Member

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    I think so and will let you know in a week.
     
  10. tennis_trs

    tennis_trs 2010 2.0 Roadster Sport

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    My new 2.0 Sport came with plastic caps.
     
  11. dsm363

    dsm363 Roadster + Sig Model S

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    Mine has plastic caps too.
     
  12. dhrivnak

    dhrivnak Active Member

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    I guess that is a bit of the decontenting that went on to make the Roadsters more profitable.
    I heard the early Roadsters cost about $15K more to make than they sold for. So there was a big effort between the 1.5 and 2.0 to drive out costs. Most changes like this one had no real effect on performance.
     
  13. dsm363

    dsm363 Roadster + Sig Model S

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    Is there anything to using plastic caps with TMPS systems? A few people have posted that you're not supposed to use metal caps with TMPS stems, something about them fusing. Not sure if that's true or not.
     
  14. wiztecy

    wiztecy Active Member

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    #14 wiztecy, May 25, 2012
    Last edited: May 25, 2012
    "I think so and will let you know in a week. "

    I have a 1.5 which shipped with the aluminum TMPS caps, the picture on ebay and other sites look very identical to the stock ones and they are spec'd to be used with the TMPS system.

    When you get the 50 looks like you already have a market to sell the extras to, all the 2.0 Roadsters owners who have the plastic caps :)

    I'll be making an order for one set, good to have an extra spare. I was also worried about misplacing one of those little guys.
     
  15. chris22104

    chris22104 Member

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    I'll grab a set of 4 too. Let me know when you're ready. Thanks! Chris
     
  16. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    The valve stem caps are the actual air seal. They are not supposed to be just a dust cover. The valve core is just a convenience feature to allow you to check the pressure without losing the air. I don't see how metal caps could "fuse" anything unless there is a problem with the TMPS system, but if you're concerned there are bakelite caps that also seal (and they are a bit easier to remove because they have a larger diameter).
     
  17. dsm363

    dsm363 Roadster + Sig Model S

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    Thanks. Not really concerned with it, just saw numerous comments about that on Amazon when I was looking into it. Seems strange that that's even possible. I have the plastic ones so will simply keep those until I loose one and need to replace it.
     
  18. Lloyd

    Lloyd Active Member

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    The problem is in salty roads with the aluminum fusing to the brass valve stem. I put a little L3 lubricant to help keep it free when I check tire pressures.
     
  19. Doug_G

    Doug_G Lead Moderator

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    Yeah, from experience this is definitely a problem if you have road salt in your area.
     
  20. dhrivnak

    dhrivnak Active Member

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    #20 dhrivnak, May 30, 2012
    Last edited: May 30, 2012
    Well I received the new valve stem caps. They are silimar to what was on the 1.5 Roadster but they are not identical. But they are Dorman Al caps with a rubber washer. You can see in the attached picture where the original is on the left and the new is on the right. They fit and work with the TPS. So if you want 4 send me a note with your address and I will ship out for for $5 for as long as supplies last. I will accept a check or PayPal Tesla_02.JPG
     

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