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Thread: Spark Plugs : Are OEM fine or is there a better aftermarket source ?

  1. #1
    apriliaforum newb
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    Spark Plugs : Are OEM fine or is there a better aftermarket source ?

    Hi,

    could not find a dedicated thread. Are OEM NGK fine, or did some move to other brand / references ?
    Any improvement of any kind to hope from changing ?

    All feedbacks welcome.

  2. #2
    apriliaforum expert SXVINWA's Avatar
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    Most reputable builders that I know of recommend the oem plugs.

  3. #3
    apriliaforum newb Olppa's Avatar
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    NGK has always been best in every bike. But that's just my opinion.

  4. #4
    apriliaforum Junkie SXV_Jack's Avatar
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    Use OEM Plugs.
    They work fine an you can become wordchampion with them.

  5. #5
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    Quote Originally Posted by Olppa View Post
    NGK has always been best in every bike. But that's just my opinion.
    Every bike _BUT_ my '79 T140 Bonneville than only bears Champions.

    But perfect for OEM NGKs for the SXV. That's what my spares box is full of

  6. #6
    apriliaforum Member
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    the stock ones are good,
    the iridium version of stock is cr8eix, no more power, but should last longer.
    a denso iu01-24 is an "upgrade" that most likely wont do anything noticeable if you really feel like spending 30$ on one spark plug.
    or a ngkR037A-8 if you wan to to spend 40$ on a plug

    a regular NGK is a good plug,
    all these will offer above a regular NGK is longer life with the iridium and platinum fine wire electrodes. Under conditions of marginal coil adequacy a fine wire could work better by allowing a lower voltage to jump the gap, which you could achieve by closing the gap some on a normal plug.

  7. #7
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    Thanks for the answers. I'll stick to OEM I think.
    And considering the expected yearly mileage on such a bike, I don't expect to change them too often.

  8. #8
    apriliaforum expert riot's Avatar
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    Ok, I have a different answer.

    Mr Noland, whom I respect very much, recommends that you should use only plugs with the non-screw on knobs (at the top), not the ones which are a screw on cap over a threaded stud.

    That said, after the 2nd time that the OEM (snap on type) plug cap ripped off the wires while removing it, I swapped the caps out for NGK ones intended to be used with the threaded stud (NGK style) plugs. Now I have a wide selection of plugs, and I do not have to worry about stud caps falling off. Further, it is way easier to pull my wires when I need to now.

    Just my 2c.

  9. #9
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    Quote Originally Posted by riot View Post
    Ok, I have a different answer.

    Mr Noland, whom I respect very much, recommends that you should use only plugs with the non-screw on knobs (at the top), not the ones which are a screw on cap over a threaded stud.

    That said, after the 2nd time that the OEM (snap on type) plug cap ripped off the wires while removing it, I swapped the caps out for NGK ones intended to be used with the threaded stud (NGK style) plugs. Now I have a wide selection of plugs, and I do not have to worry about stud caps falling off. Further, it is way easier to pull my wires when I need to now.

    Just my 2c.
    What Mr Noland meant was don’t use the screw on ones where you have to use the screw on bit...

    It vibrates loose and causes issues...

    I too use the NGK caps that lock onto the threaded bit...

  10. #10
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    Quote Originally Posted by S4R View Post
    What Mr Noland meant was donít use the screw on ones where you have to use the screw on bit...

    It vibrates loose and causes issues...

    I too use the NGK caps that lock onto the threaded bit...
    https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    I put these on mine, the 45 is not the way to go, and also the rubber part around the plug hits the sides of the plug well, so i had to slip the rubber on a socket and put the socket on a bit driver and run it against a disc sander to make it fit my plug well without side loading.

  11. #11
    apriliaforum Member
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    LD05F would be the 90 degree version

  12. #12
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    I use the SplitFire TP430C and have not had any bad experiences

  13. #13
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    I run iridiums NGK with screw on tops, which are squeezed a bit with pliers at the bottom to increase the thread grip and run original rubber caps and wires, never had an issue on both bikes.

  14. #14
    apriliaforum Member tgodon13's Avatar
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    I always have preferred Denso plugs over NGK. I recently put Denso iridium plugs in my SXV450. Runs great...Starts cold in 3 seconds, when warm it starts as soon as I touch the button.
    _______________________________
    2008 Aprilia SXV 450
    2015 VW GTI 2 door SE 6MT

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