10 bestIridium Spark Plugsof October 2025
112M consumers helped this year.
1

NGK Spark Plug BR9ECMIX Iridium IX 2707
NGK

9.9
2

NGK Spark Plug BPR6EIX Iridium IX 6637
NGK

9.8
3

Bosch ZR7SI332S (N48) - Spark Plugs Double Iridium - Set of 4
Bosch

9.6
4

4 PCS *NEW* -- Denso # 5304 IRIDIUM Power Spark Plugs IK20
Denso

9.4
5

NGK Spark Plug SILZKGR8B8S 94201 Iridium IX
NGK

9.1
OtherUp to 5% off
6

NGK Spark Plug DR8EIX Iridium IX 6681
NGK

8.9
7

Bosch ZQR8SI302 - Spark Plugs Iridium - 1 piece
Bosch Automotive

8.6
8

Autolite Iridium XP Automotive Replacement Spark Plugs, XP3924 (4 Pack)
Autolite

8.4
9

NGK Spark Plug BPR7EIX Iridium IX 4055
NGK

8.1
10

Bosch FR6HI332 - Spark Plugs Double Iridium - 1 piece
Bosch

7.8
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