2012 Kia Optima Spark Plug

A 2012 Optima spark plug is one of the most crucial ignition components, as it uses electric current to combust gas and rev the engine in turn. This electrode material is necessary for proper operation, and if it is worn, the vehicle may stall, struggle to start, or experience engine misfires in cylinders. Browse our selection of 2012 Kia Optima spark plugs from trusted brands and buy the right one for you.

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1-15 of 15 Results

1-15 of 15 Results
      • Sponsored

        Bosch Double Iridium Spark Plug 96323

        Sponsored
        Bosch Double Iridium Spark Plug 96323 for 2012 Kia Optima

        Bosch Double Iridium Spark Plug 96323

        • Part # 96323
        • SKU # 941072
        Notes: Original center electrode material is iridium and ground electrode pin material is platinum. OEM fine wire double iridium pin-to-pin. Do not gap, gap is preset. Quantity per car: 4.
        • PRICE: 14.99
        • Pre-Gap Size: 1mm
        • Resistance: 6000Ohms
        • Reach: 26.5mm
        • Metal Type: Iridium - Double
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Pin-to-pin
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Ground Configuration: Standard
        • Manufacturer Heat Range: 8
        • Hex Size: 16 mm
      • Sponsored

        Bosch Double Iridium Spark Plug 9625

        Sponsored
        Bosch Double Iridium Spark Plug 9625 for 2012 Kia Optima

        Bosch Double Iridium Spark Plug 9625

        • Part # 9625
        • SKU # 1056622
        Notes: Double iridium, Do Not Gap, Gap is Preset
        • PRICE: 14.49
        • Pre-Gap Size: 0.8mm
        • Reach: 26.5mm
        • Metal Type: Iridium - Double
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Standard
        • Ground Configuration: Standard
        • Center Electrode Core Material: Nickel-Yttrium and Copper and Iridium-Platinum
        • Resistance: 6000Ohms
        • Seat Type: Tapered
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: N/A
        • Manufacturer Heat Range: 7
        • Hex Size: 16 mm
      • Sponsored

        Autolite XP Iridium Spark Plug XP5703

        Sponsored
        Autolite XP Iridium Spark Plug XP5703 for 2012 Kia Optima

        Autolite XP Iridium Spark Plug XP5703

        • Part # XP5703
        • SKU # 417868
        Notes: OEM style. Gap .030" 0.8 mm. Iridium XP. Quantity per car: 4.
        • PRICE: 9.99
        • Pre-Gap Size: 0.8mm
        • Reach: 26.5mm
        • Metal Type: Iridium
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Tapered
        • Electrical Terminal Type: Stud
        • Center Electrode Design: Fine Wire
        • Center Electrode Core Material: Copper
        • Resistance: 4000Ohms
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Center Electrode Insulator Tip Projection: Mid Projection
        • Ground Electrode Core Material: Nickel
        • Ground Electrode Tip Material: Platinum
        • Resistor Type: Yes
        • Hex Size: 16 mm
      • Sponsored

        Autolite XP Iridium Spark Plug XP6203

        Sponsored
        Autolite XP Iridium Spark Plug XP6203 for 2012 Kia Optima

        Autolite XP Iridium Spark Plug XP6203

        • Part # XP6203
        • SKU # 454839
        Notes: OEM style. Gap .043" 1.1 mm. Iridium XP. Quantity per car: 4.
        • PRICE: 9.99
        • Pre-Gap Size: 1.1mm
        • Reach: 26.5mm
        • Metal Type: Iridium
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Tapered
        • Electrical Terminal Type: Stud
        • Center Electrode Design: Fine Wire
        • Ground Configuration: Single
        • Center Electrode Core Material: Copper
        • Center Electrode Projection: Mid Projection
        • Resistance: 4000Ohms
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Center Electrode Insulator Tip Projection: Mid Projection
        • Ground Electrode Core Material: Nickel
        • Ground Electrode Tip Material: Platinum
        • Resistor Type: Yes
        • Hex Size: 16 mm
      • Sponsored

        Autolite Iridium Ultra Spark Plug AI5703

        Sponsored
        Autolite Iridium Ultra Spark Plug AI5703 for 2012 Kia Optima

        Autolite Iridium Ultra Spark Plug AI5703

        • Part # AI5703
        • SKU # 1103113
        Notes: OEM style. Iridium ultra. Gap .030" 0.8 mm. Quantity per car: 4.
        • PRICE: 9.99
        • Pre-Gap Size: 0.032in
        • Reach: 1.043MM
        • Thread Diameter: 12IN
        • Metal Type: Iridium
        • Ground Electrode Quantity: 1
        • Ground Electrode Tip Design: Tapered
        • Electrical Terminal Type: Stud
        • Ground Configuration: 1
        • Center Electrode Core Material: Iridium
        • Resistance: 4000Ohms
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: Nickel
        • Resistor Type: Yes
        • Manufacturer Heat Range: 9
        • Hex Size: 5/8 in
      • Sponsored

        Autolite Iridium Ultra Spark Plug AI6203

        Sponsored
        Autolite Iridium Ultra Spark Plug AI6203 for 2012 Kia Optima

        Autolite Iridium Ultra Spark Plug AI6203

        • Part # AI6203
        • SKU # 492540
        Notes: OEM style. Iridium ultra. Gap .043" 1.1 mm. Quantity per car: 4.
        • PRICE: 9.99
        • Pre-Gap Size: 0.044in
        • Reach: 1.043MM
        • Thread Diameter: 12IN
        • Metal Type: Iridium
        • Ground Electrode Quantity: 1
        • Ground Electrode Tip Design: Tapered
        • Electrical Terminal Type: Stud
        • Ground Configuration: 1
        • Center Electrode Core Material: Iridium
        • Resistance: 4000Ohms
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: Nickel
        • Resistor Type: Yes
        • Manufacturer Heat Range: 9
        • Hex Size: 5/8 in
      • Sponsored

        NGK Laser Iridium Spark Plug 93199

        Sponsored
        NGK Laser Iridium Spark Plug 93199 for 2012 Kia Optima

        NGK Laser Iridium Spark Plug 93199

        • Part # 93199
        • SKU # 220816
        Notes: OEM equivalent design. Gap 0.044". 105,000 mile OEM Mfr recommended service interval. Laser Iridium high ignitability spark plug. OE spark plug is high ignitability. For optimal performance, replace with high ignitability spark plugs. Quantity per car: 4.
        • PRICE: 31.49
        • Reach: 26.5mm
        • Metal Type: Iridium
        • Thread Diameter: 12.0mm
        • Seat Type: Gasket
        • Center Electrode Tip Material: Iridium
        • Center Electrode Core Material: Copper
      • Sponsored

        NGK Laser Iridium Spark Plug 92422

        Sponsored
        NGK Laser Iridium Spark Plug 92422 for 2012 Kia Optima

        NGK Laser Iridium Spark Plug 92422

        • Part # 92422
        • SKU # 1155930
        Notes: Actual OEM manufacturer. 45,000 mile OEM Mfr recommended service interval. Gap 0.036". Laser Iridium high ignitability spark plug. OE spark plug is high ignitability. For optimal performance, replace with high ignitability spark plugs. Quantity per car: 4.
        • PRICE: 15.99
        • Metal Type: Iridium
        • Manufacturer Heat Range: Laser Iridium Spark Plug
      • Sponsored

        Denso Iridium Spark Plug 3479

        Sponsored
        Denso Iridium Spark Plug 3479 for 2012 Kia Optima

        Denso Iridium Spark Plug 3479

        • Part # 3479
        • SKU # 533144
        Notes: Gap 0.032". Iridium Long Life. DENSO is OEM manufacturer / iridium long life plug - patented iridium alloy plug (90% IR) with platinum ground strap. Quantity per car: 4.
        • PRICE: 16.99
        • Pre-Gap Size: 0.032in
        • Reach: 26.5mm
        • Metal Type: Iridium
        • Thread Diameter: 12mm
        • Electrical Terminal Type: Non-Removable Nut
        • Seat Type: Gasket
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: Platinum
        • Ground Configuration: Single
        • Resistor Type: Yes
        • Center Electrode Core Material: Copper
        • Manufacturer Heat Range: 20
      • Sponsored

        Denso Iridium Spark Plug 3478

        Sponsored
        Denso Iridium Spark Plug 3478 for 2012 Kia Optima

        Denso Iridium Spark Plug 3478

        • Part # 3478
        • SKU # 533156
        Notes: Gap 0.044". DENSO is OEM manufacturer / iridium long life plug - patented iridium alloy plug (90% IR) with platinum ground strap. Iridium Long Life (SIP). Quantity per car: 4.
        • PRICE: 17.99
        • Pre-Gap Size: 0.044in
        • Reach: 26.5mm
        • Metal Type: Iridium
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Needle to Needle
        • Electrical Terminal Type: Non-Removable Nut
        • Ground Configuration: Single
        • Center Electrode Core Material: Copper
        • Seat Type: Gasket
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: Platinum
        • Resistor Type: Yes
        • Manufacturer Heat Range: 16
      • Sponsored

        Denso Iridium Spark Plug 5354

        Sponsored
        Denso Iridium Spark Plug 5354 for 2012 Kia Optima

        Denso Iridium Spark Plug 5354

        • Part # 5354
        • SKU # 1288179
        Notes: Gap 0.035". Iridium Power - performance upgrade with world's smallest center electrode (0.4 mm diameter) and tapered tip patented U groove design and patented IR alloy (90% IR). Iridium Power. Quantity per car: 4.
        • PRICE: 10.79
        • Pre-Gap Size: 0.9mm
        • Reach: 26.5mm
        • Metal Type: Iridium
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12.0mm
        • Ground Electrode Tip Design: Tapercut, U-Groove
        • Ground Configuration: Standard
        • Center Electrode Core Material: Copper
        • Resistance: 5000ohms
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: Nickel
        • Manufacturer Heat Range: 20
        • Hex Size: 16.0
      • Sponsored

        Champion Iridium Spark Plug 9409

        Sponsored
        Champion Iridium Spark Plug 9409 for 2012 Kia Optima

        Champion Iridium Spark Plug 9409

        • Part # 9409
        • SKU # 1246410
        Notes: Gap 0.035". Champion iridium. Plug type #RER8WMPB. Quantity per car: 4.
        • PRICE: 9.99
        • Pre-Gap Size: 0.85mm
        • Reach: 1.043in
        • Metal Type: Iridium
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12.0mm
        • Washer Type: Crush
        • Ground Electrode Tip Design: J Gap
        • Electrical Terminal Type: Non-Removable Nut
        • Hex Type: Hex
        • Washer Included: Yes
        • Center Electrode Core Material: Copper
        • Seat Type: Flat
        • Center Electrode Tip Material: Iridium
        • Ground Electrode Core Material: Platinum
        • Resistor Type: Yes
        • Indexed: No
        • Manufacturer Heat Range: 8
      • Sponsored

        Bosch Doble Platinum Spark Plug 8132

        Sponsored
        Bosch Doble Platinum Spark Plug 8132 for 2012 Kia Optima

        Bosch Doble Platinum Spark Plug 8132

        • Part # 8132
        • SKU # 1043552
        Notes: OEM fine wire double iridium. Original center electrode material is platinum. Do not gap, gap is preset. Quantity per car: 4.
        • PRICE: 8.49
        • Pre-Gap Size: 0.8mm
        • Reach: 26.5mm
        • Metal Type: Platinum - Double
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Standard
        • Ground Configuration: Standard
        • Center Electrode Core Material: Nickel-Yttrium and Copper and Platinum
        • Resistance: 6000Ohms
        • Seat Type: Tapered
        • Center Electrode Tip Material: Platinum
        • Ground Electrode Core Material: Copper
        • Manufacturer Heat Range: 6
        • Hex Size: 16 mm
      • Sponsored

        Autolite Double Platinum Spark Plug APP6203

        Sponsored
        Autolite Double Platinum Spark Plug APP6203 for 2012 Kia Optima

        Autolite Double Platinum Spark Plug APP6203

        • Part # APP6203
        • SKU # 369863
        • PRICE: 5.49
        • Pre-Gap Size: 1.1mm
        • Reach: 26.5mm
        • Metal Type: Platinum - Double
        • Ground Electrode Quantity: 1
        • Thread Diameter: 12mm
        • Ground Electrode Tip Design: Tapered
        • Electrical Terminal Type: Stud
        • Center Electrode Core Material: Copper
        • Resistance: 4000Ohms
        • Seat Type: Flat
        • Center Electrode Tip Material: Platinum
        • Center Electrode Insulator Tip Projection: Mid Projection
        • Ground Electrode Core Material: Nickel
        • Ground Electrode Tip Material: Platinum
        • Resistor Type: Yes
        • Hex Size: 16 mm
      • Sponsored

        E3 Copper Spark Plug E3.80

        Sponsored
        E3 Copper Spark Plug E3.80 for 2012 Kia Optima

        E3 Copper Spark Plug E3.80

        • Part # E3.80
        • SKU # 477416
        Notes: Quantity per car: 4.
        • PRICE: 6.99
        • Reach: 1in
        • Metal Type: Copper
        • Thread Diameter: 12mm
        • Seat Type: Gasket
        • Center Electrode Tip Material: Nickel
        • Center Electrode Core Material: Copper

      Alternate Year Models

      2011 Kia Optima Spark Plug2013 Kia Optima Spark Plug

      Kia Optima Spark Plug Comparison Chart

      YearOE MetalGapAmount Required
      2020
      Iridium
      Platinum
      		-
      4
      2019
      Iridium
      		-
      4
      2018
      Iridium
      		-
      4
      2017
      Iridium
      		-
      4
      2016
      Iridium
      		-
      4
      2015
      Iridium
      		-
      4
      2014
      Iridium
      		-
      4
      2013
      Iridium
      		-
      4
      2012
      Iridium
      		-
      4
      2011
      Iridium
      		-
      4
      2010
      Iridium
      0.044
      4
      6
      2009
      Iridium
      0.044
      4
      6
      2008
      Iridium
      0.044
      4
      6
      2007
      Double Platinum
      Iridium
      0.044
      4
      6
      2006
      Double Platinum
      0.044
      4
      6
      2005
      Double Platinum
      0.044
      4
      6
      2004
      Double Platinum
      0.044
      4
      6
      2003
      Double Platinum
      0.044
      4
      6
      2002
      Double Platinum
      0.044
      4
      6
      2001
      Double Platinum
      0.044
      4
      6
      *Varies based on submodel and engine type