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2TR Denso Spark Plug Question

Discussion in '4 Cylinder' started by Bowers86, Jul 8, 2016.

  1. Jul 8, 2016 at 5:46 PM
    #1
    Bowers86

    #1
    Bowers86 [OP] Well-Known Member

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    I recently changed the spark plugs on my 2TR and after doing so ran into a slight difference of part number. The Denso plugs (I am assuming they are OE still as I only have 60k on the odo and the threads were getting a little corroded) I removed had a part number SK20HR-A11 (3493), the ones I installed were
    $53 SK20HR11 ---- IRIDIUM PLATINUM power pack Spark Plugs -- # 3421 ----- 6 PCS NEW
    SK20HR11 (3421). I didnt notice the change until well after I had installed the plugs. Truck runs fine so I assume they are okay, but wondering if anyone could tell me the difference between the two.
     
    Bowers86, Jul 8, 2016
    #1
  2. Jul 9, 2016 at 12:23 PM
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    TRDCal

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    TRDCal Well-Known Member

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    TRDCal, Jul 9, 2016
    #2
    ilovich likes this.
  3. Jul 9, 2016 at 12:51 PM
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    ilovich

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    ilovich Well-Known Member

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    ilovich, Jul 9, 2016
    #3
  4. Jul 9, 2016 at 7:55 PM
    #4
    Bowers86

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    Bowers86 [OP] Well-Known Member

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    Male
    Vancouver, WA
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    2013 RC 2WD 5-speed
    Access Cab Buckets, OE backup cam, AFE Air Filter/Secondary filter removed/Fender Elbow removed, Magnaflow 11225, XII springs/4x4 leafs/XR Bilsteins, Prodigy P3 brake controller, 3.73 Third, Undercover Tonneau, Koomus CD slot iPhone mount, Paint matched rear bumper, Drag 18x9 et20 wheels, 3rd Gen Airdam.
    Thanks for posting those links back to back. Yeah definitely the same, just weird that it appears both are still being manufactured under their respective PN#s. Still going good so I guess I'll report back only if something goes horribly wrong, lol.
     
    Bowers86, Jul 9, 2016
    #4
  5. Jul 25, 2016 at 8:42 PM
    #5
    2.7taco

    #5
    2.7taco Well-Known Member

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    One of them is a high life plug the other a thinner electrode for a faster spark. The difference is negligible I've ran both. The only thing is the plug with the thin electrode does wear out faster about 60k vs 80-100k.
     
    2.7taco, Jul 25, 2016
    #5

Products Discussed in

DENSO ---SK20HR11---- IRIDIUM PLATINUM power pack Spark Plugs -- # 3421 ----- 6 PCS NEW
$52.04
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