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Audi
4000 Quattro

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NGK Spark Plug 6637 - Picture 1 of 1

Spark Plug-Iridium IX NGK 6637

4.899 product ratings
eeuroparts (77074)
99.3% positive feedback
Price:
$14.27
Free shipping
Estimated delivery Wed, Oct 1 - Sat, Oct 4
Returns:
30 days returns. Seller pays for return shipping.
Condition:
New
Electrical Parts Policy. A genuine part is a part in the auto manufacturer’s original box with their logo on the box. Verify that the item fits your car. All orders are processed automatically.

About this product

Product Identifiers

BrandNGK
Manufacturer Part Number6637
eBay Product ID (ePID)76256428

Product Key Features

California Prop 65 WarningNickel

Additional Product Features

NotesDescription--Iridium IX Spark Plug
Sub TypeSpark Plug
Part TypeSecondary Ignition

All listings for this product

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New
Spark Plug NGK 6637 (1 Spark Plug Only)
item 1 Spark Plug NGK 6637 (1 Spark Plug Only)
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Genuine NGK 6637 BPR6EIX Iridium IX Spark Plug
item 2 Genuine NGK 6637 BPR6EIX Iridium IX Spark Plug
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item 3 Spark Plug-Iridium IX NGK 6637
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item 4 Spark Plug-Iridium IX NGK 6637
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NGK SPARK PLUGS 6637 BPR6EIX Spark Plugs For Iridium IX version of BPR6ES
item 5 NGK SPARK PLUGS 6637 BPR6EIX Spark Plugs For Iridium IX version of BPR6ES
$14.21
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NGK Spark Plug 6637
item 6 NGK Spark Plug 6637
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NGK SPARK PLUGS 6637 BPR6EIX Spark Plugs For Iridium IX version of BPR6ES
item 7 NGK SPARK PLUGS 6637 BPR6EIX Spark Plugs For Iridium IX version of BPR6ES
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item 9 NGK 7223 Spark Plug #7223/04
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NGK SPARK PLUGS 6637 BPR6EIX Spark Plugs For Iridium IX version of BPR6ES
item 10 NGK SPARK PLUGS 6637 BPR6EIX Spark Plugs For Iridium IX version of BPR6ES
$15.11
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Iridium Spark Plug NGK 6637
item 11 Iridium Spark Plug NGK 6637
$15.25
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Iridium Spark Plug NGK 6637 BPR6EIX for BMW R100, Yamaha XS1100
item 12 Iridium Spark Plug NGK 6637 BPR6EIX for BMW R100, Yamaha XS1100
$15.77
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NGK Iridium IX Spark Plug BPR6EIX (6637)
item 13 NGK Iridium IX Spark Plug BPR6EIX (6637)
$15.90
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NGK Iridium-IX Spark Plug BPR6EIX #6637
item 14 NGK Iridium-IX Spark Plug BPR6EIX #6637
$15.93
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NGK 6637 Iridium IX Spark Plug BPR6EIX, 1 Pack
item 15 NGK 6637 Iridium IX Spark Plug BPR6EIX, 1 Pack
$16.01
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Spark Plug-Iridium IX NGK 6637
item 16 Spark Plug-Iridium IX NGK 6637
$9.99
+$6.30 shipping
Spark Plug-Iridium IX NGK 6637
item 17 Spark Plug-Iridium IX NGK 6637
$9.99
+$6.30 shipping
Spark Plug-Iridium IX NGK 6637
item 18 Spark Plug-Iridium IX NGK 6637
$9.99
+$6.30 shipping
1 Pack NGK 6637 Iridium IX Spark Plug BPR6EIX
item 19 1 Pack NGK 6637 Iridium IX Spark Plug BPR6EIX
$16.77
Free shipping
Spark Plug-Iridium IX NGK 6637
item 20 Spark Plug-Iridium IX NGK 6637
$18.13
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item 21 Iridium Spark Plug NGK 6637
$18.13
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Spark Plug-Iridium IX NGK 6637
item 22 Spark Plug-Iridium IX NGK 6637
$18.74
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NGK BPR6EIX Iridium Spark Plug - 6637
item 23 NGK BPR6EIX Iridium Spark Plug - 6637
$10.76
+$7.99 shipping
Iridium Spark Plug NGK 6637
item 24 Iridium Spark Plug NGK 6637
$19.06
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One New NGK Iridium Resistor Spark Plug 6637 BPR6EIX for Nissan & more
item 25 One New NGK Iridium Resistor Spark Plug 6637 BPR6EIX for Nissan & more
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item 26 Iridium Spark Plug NGK 6637
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item 27 NGK SPARK PLUGS - 6637 - Iridium IX Spark Plug ? BPR6EIX for Arctic Cat Prowler
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Spark Plug-Iridium IX NGK 6637
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item 28 Spark Plug-Iridium IX NGK 6637
$20.00
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Spark Plug-Iridium IX NGK 6637
item 29 Spark Plug-Iridium IX NGK 6637
$20.05
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item 30 Genuine NGK NGK Iridium IX Spark Plug 6637
$10.27
+$9.99 shipping
NGK Iridium-IX Spark Plug BPR6EIX #6637 for BMW
item 31 NGK Iridium-IX Spark Plug BPR6EIX #6637 for BMW
$20.34
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Spark Plug-Iridium IX NGK 6637
item 32 Spark Plug-Iridium IX NGK 6637
$20.60
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Spark Plug #6637/04
item 33 Spark Plug #6637/04
$11.01
+$10.00 shipping
Set of 2 Genuine NGK 6637 BPR6EIX Iridium IX Spark Plugs
item 34 Set of 2 Genuine NGK 6637 BPR6EIX Iridium IX Spark Plugs
$21.29
Free shipping
2 pc NGK 6637 BPR6EIX Iridium IX Spark Plugs for XS63DP XS63 XP64DP2 XP64 ox
item 35 2 pc NGK 6637 BPR6EIX Iridium IX Spark Plugs for XS63DP XS63 XP64DP2 XP64 ox
$22.19
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item 36 Iridium Spark Plug NGK 6637
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Spark Plug-Iridium IX NGK 6637
item 37 Spark Plug-Iridium IX NGK 6637
$22.70
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NGK SPARK PLUGS 6637 Iridium IX Spark Plug - BPR6EIX
item 38 NGK SPARK PLUGS 6637 Iridium IX Spark Plug - BPR6EIX
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+$10.49 shipping
4x BPR6EIX Iridium Spark Plugs 6637 Upgrade Spark/Power Pre-Gapped
item 39 4x BPR6EIX Iridium Spark Plugs 6637 Upgrade Spark/Power Pre-Gapped
$23.09
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4 Packs Spark Plugs For ngk Iridium IX 6637 BPR6EIX 6637 BPR6EIX Tune Up
item 40 4 Packs Spark Plugs For ngk Iridium IX 6637 BPR6EIX 6637 BPR6EIX Tune Up
$23.09
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Spark Plug-Iridium IX NGK 6637
item 41 Spark Plug-Iridium IX NGK 6637
$23.25
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For ngk Iridium IX SPark Plugs - BPR6EIX (6637) SET OF 4Pcs -
item 42 For ngk Iridium IX SPark Plugs - BPR6EIX (6637) SET OF 4Pcs -
$23.86
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NGK BPR6EIX 6637 Iridium Spark Plugs (2-Pack) for BMW R100, XS1100
item 43 NGK BPR6EIX 6637 Iridium Spark Plugs (2-Pack) for BMW R100, XS1100
$25.67
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item 44 Ngk Spark Plugs 6637 Ngk Iridium Ix Spark Plug
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item 45 Genuine NGK NGK Iridium IX Spark Plug 6637
$9.49
+$16.99 shipping
Set 4Pcs BPR6EIX SPARK PLUGS 6637 ForAudi 200 Quattro 1989 / 1990 /1991 10V
item 46 Set 4Pcs BPR6EIX SPARK PLUGS 6637 ForAudi 200 Quattro 1989 / 1990 /1991 10V
$26.71
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Set 4Pcs For ngk - 6637 - Iridium IX Spark Plugs, BPR6EIX
item 47 Set 4Pcs For ngk - 6637 - Iridium IX Spark Plugs, BPR6EIX
$26.71
Free shipping
Set 4Pcs - BPR6EIX NEW BRANDS SPARK PLUGS 6637 - For Audi 200 1989 1990 1991
item 48 Set 4Pcs - BPR6EIX NEW BRANDS SPARK PLUGS 6637 - For Audi 200 1989 1990 1991
$26.71
Free shipping
2 Pack NGK 6637 Iridium IX Spark Plugs BPR6EIX
item 49 2 Pack NGK 6637 Iridium IX Spark Plugs BPR6EIX
$26.77
Free shipping
4x New #6637 BPR6EIX Iridium Spark Plugs Upgrade Spark/Power Pre-Gapped
item 50 4x New #6637 BPR6EIX Iridium Spark Plugs Upgrade Spark/Power Pre-Gapped
$27.89
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4 Packs Spark Plugs For ngk Iridium IX 6637 BPR6EIX 6637 Tune Up
item 51 4 Packs Spark Plugs For ngk Iridium IX 6637 BPR6EIX 6637 Tune Up
$27.99
Free shipping
Iridium Spark Plug NGK 6637
item 52 Iridium Spark Plug NGK 6637
$15.34
+$12.95 shipping
4 Pack Spark Plugs NGK Iridium IX 6637 BPR6EIX 6637 BPR6EIX Tune Up
Last one
item 53 4 Pack Spark Plugs NGK Iridium IX 6637 BPR6EIX 6637 BPR6EIX Tune Up
$28.49
Free shipping
4 Pack Spark Plugs NGK Iridium IX 6637 BPR6EIX 6637 BPR6EIX Tune Up
item 54 4 Pack Spark Plugs NGK Iridium IX 6637 BPR6EIX 6637 BPR6EIX Tune Up
$28.99
Free shipping
NGK Iridium IX Spark Plug BPR6EIX (6637)
item 55 NGK Iridium IX Spark Plug BPR6EIX (6637)
$29.27
Free shipping
Spark Plug-Iridium IX NGK 6637
item 56 Spark Plug-Iridium IX NGK 6637
$10.15
+$21.52 shipping
6x New Iridium IX Spark Plugs For XS63DP XS63 XP64DP2 XP64 TM #6637 BPR6EIX
item 57 6x New Iridium IX Spark Plugs For XS63DP XS63 XP64DP2 XP64 TM #6637 BPR6EIX
$34.19
Free shipping
8x New Spark Plugs #BPR6EIX 6637 Upgrade Spark/Power Pre-Gapped Iridium
item 58 8x New Spark Plugs #BPR6EIX 6637 Upgrade Spark/Power Pre-Gapped Iridium
$36.89
Free shipping
4 Pack NGK Iridium IX Spark Plugs 6637 BPR6EIX 6637 BPR6EIX Tune Up
item 59 4 Pack NGK Iridium IX Spark Plugs 6637 BPR6EIX 6637 BPR6EIX Tune Up
$34.00
+$2.99 shipping
listings for this product

Ratings and Reviews

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4.9
9 product ratings
  • 8 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • by doug12496
    Jun 30, 2017

    NGK BPR6EIX Iridium Spark Plug

    Premium product offering excellent performance. Fuel economy went from mid 30's to over 41 mpg on my 1978 XS1100. Your mileage may vary depending upon your riding style...

    Verified purchase: YesCondition: New

  • by lamafia_1976
    Nov 29, 2021

    Good spark plugs

    Those items make the engine as soft, quiet and smooth.

    Verified purchase: YesCondition: New

  • by edgrrr75
    Mar 09, 2021

    Worth it. Should last a long time.u

    Great plug for my Enfield Classic 500.

    Verified purchase: YesCondition: New

  • by dee_wreck
    Sep 17, 2025

    quality

    quality

    Verified purchase: YesCondition: New

  • by goodusedtoys1
    Sep 07, 2024

    Excellent plug, fixed my problem!!...

    Excellent plug, fixed my problem!!

    Verified purchase: YesCondition: New

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