129 Ignition parts are listed for the 2005 Kia Optima, in 10 part types, covering both the 2.4L L4 and the 2.7L V6. Each one has a brand, a manufacturer part number and notes that say where it fits.
The ignition system on the 2005 Kia Optima delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Spark Plug (26 parts), Ignition Coil (23 parts) and Camshaft Position Sensor (22 parts). The other 7 part types cover the remaining 58 parts.
The 2005 Kia Optima was sold with both the 2.4L L4 and the 2.7L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2005 Kia Optima ignition parts are STANDARD MOTOR PRODUCTS (17 parts), FAMOUS BRAND (8 parts) and WALKER PRODUCTS (8 parts), plus 31 more brands. Quality grades include Economy, Standard Replacement and Premium.
27 parts on this 2005 Kia Optima page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including BWD/NIEHOFF CSS1564 (Camshaft Position Sensor) and FAMOUS BRAND 180208804 (Crankshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BWD/NIEHOFF Popular Fits: 2.4L L4 | CSS1564 | 🇺🇸 US 🇨🇦 CA | Cam position sensor | View on Amazon |
| FAMOUS BRAND Popular Fits: 2.4L L4 | CSC1247 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ULTRA-POWER Popular Fits: 2.4L L4 | 5S1301 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: 2.4L L4 | 2CAM0003 | 🇺🇸 US | View on Amazon | |
| PRENCO Fits: 2.4L L4 | 4E1071 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 2.4L L4 | SK907712 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PC373T | 🇺🇸 US | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CSS1564 | 🇺🇸 US 🇨🇦 CA | Cam position sensor | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | CAM100 | 🇺🇸 US | View on Amazon | |
| VEMO Fits: 2.4L L4 | V95720018 | 🇺🇸 US | Plug (Connector): 3 Pins | View on Amazon |
Full Service Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Popular Fits: 2.4L L4 | 23591051 | 🇺🇸 US | Full Service Kit | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Popular Fits: 2.4L L4 | 3931038050 | 🇺🇸 US | View on Amazon | |
| ASTEMO / HITACHI Fits: 2.4L L4 | CPS0274 | 🇺🇸 US | Mount Hole Quantity: 1 | View on Amazon |
| BECK/ARNLEY Fits: 2.4L L4 | 1800350 | 🇺🇸 US | View on Amazon | |
| DELPHI Fits: 2.4L L4 | SS11354 | 🇺🇸 US | View on Amazon | |
| FACET Fits: 2.4L L4 | 90335 | 🇺🇸 US | View on Amazon | |
| HELLA Fits: 2.4L L4 | 009121801 | 🇺🇸 US | 3-Pin Connectorwith Seal | View on Amazon |
| HL MANDO Fits: 2.4L L4 | 22A1009 | 🇺🇸 US | New | View on Amazon |
| NTK Fits: 2.4L L4 | EC0144 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PC373 | 🇺🇸 US | View on Amazon | |
| WALKER PRODUCTS Fits: 2.4L L4 | 2351051 | 🇺🇸 US | Sensor Only | View on Amazon |
| WELLS Fits: 2.4L L4 | 5S1301 | 🇺🇸 US | View on Amazon |
This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
22 Camshaft Position Sensor parts are listed for the 2005 Kia Optima, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, BWD/NIEHOFF and 16 other brands. BWD/NIEHOFF CSS1564 carries the "Popular" badge.
In the Economy grade, STANDARD MOTOR PRODUCTS, BWD/NIEHOFF, FAMOUS BRAND and 6 other brands supply 10 parts: the catalog's value-priced group. A representative part number is BWD/NIEHOFF CSS1564.
In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 23591051.
The Standard Replacement section lists 11 options from HYUNDAI, ASTEMO / HITACHI, BECK/ARNLEY and 8 other brands — built to original-equipment specification. HYUNDAI 3931038050 is listed in this group.
Camshaft Position Sensor Interrupter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 | 5S16351 | 🇺🇸 US | View on Amazon |
This table covers the interrupter wheels the camshaft sensor reads.
One part is listed for the 2005 Kia Optima — WELLS 5S16351.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Popular Fits: 2.4L L4 | 180208804 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM Popular Fits: 2.4L L4 | S10041 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | PC374T | 🇺🇸 US | T-Series | View on Amazon |
| BWD/NIEHOFF Fits: 2.4L L4 | CSS732 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FAMOUS BRAND Fits: 2.4L L4 | CSC1189 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: 2.4L L4 | 2CRK0568 | 🇺🇸 US | View on Amazon | |
| PACE SETTER ELECTRICAL Fits: 2.4L L4 | CSS732Z | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO Fits: 2.4L L4 | 4D1002 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 2.4L L4 | SK907756 | 🇺🇸 US | Crankshaft Angle Sensor | View on Amazon |
| ULTRA-POWER Fits: 2.4L L4 | 5S1773 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | CRK175 | 🇺🇸 US | View on Amazon | |
| VEMO Fits: 2.4L L4 | V52720033 | 🇺🇸 US | View on Amazon |
Full Service Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: 2.4L L4 | 23591257 | 🇺🇸 US | Full Service Kit | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | PC374 | 🇺🇸 US | View on Amazon | |
| BECK/ARNLEY Fits: 2.4L L4 | 1800336 | 🇺🇸 US | View on Amazon | |
| DELPHI Fits: 2.4L L4 | SS11089 | 🇺🇸 US | View on Amazon | |
| HYUNDAI Fits: 2.4L L4 | 3931038060 | 🇺🇸 US | View on Amazon | |
| NTK Fits: 2.4L L4 | EH0219 | 🇺🇸 US | View on Amazon | |
| WALKER PRODUCTS Fits: 2.4L L4 | 2351257 | 🇺🇸 US | Sensor Only | View on Amazon |
| WELLS Fits: 2.4L L4 | 5S1773 | 🇺🇸 US | Wiring Harness Length: 33.50 In | View on Amazon |
This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
20 Crankshaft Position Sensor parts are listed for the 2005 Kia Optima, from FAMOUS BRAND, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 14 other brands. FAMOUS BRAND 180208804 carries the "Popular" badge.
Economy: 12 parts, from FAMOUS BRAND, SPECTRA PREMIUM, STANDARD MOTOR PRODUCTS and 8 other brands. A representative part number is FAMOUS BRAND 180208804.
Full Service Kit: 1 part, from WALKER PRODUCTS. A representative part number is WALKER PRODUCTS 23591257.
The Standard Replacement section: 7 options from STANDARD MOTOR PRODUCTS, BECK/ARNLEY, DELPHI and 4 other brands. STANDARD MOTOR PRODUCTS PC374 is listed in this group.
Crankshaft Position Sensor Blade
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.4L L4 | 917028 | 🇺🇸 US | View on Amazon | |
| HYUNDAI Fits: 2.4L L4 | 2335538010 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Crankshaft Position Sensor blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different.
2 Crankshaft Position Sensor Blade parts are listed for the 2005 Kia Optima, from DORMAN and HYUNDAI.
This group includes DORMAN 917028 and HYUNDAI 2335538010.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 2.4L L4 | SKUF285T | 🇺🇸 US | Coil on Plug | View on Amazon |
| SPECTRA PREMIUM Popular Fits: 2.4L L4 | C602 | 🇺🇸 US | Ignition Coil Mounts to Cylinder Head | View on Amazon |
| ULTRA-POWER Popular Fits: 2.4L L4 | 5C1155 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| B&B Fits: 2.4L L4 | BB2285 | 🇺🇸 US | View on Amazon | |
| BWD/NIEHOFF Fits: 2.4L L4 | E874 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FAMOUS BRAND Fits: 2.4L L4 | EBC1795 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FAMOUS BRAND Fits: 2.4L L4 | 26C1074 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 2.4L L4 | UF285F | 🇺🇸 US | View on Amazon | |
| HOLSTEIN Fits: 2.4L L4 | 2IGC0213 | 🇺🇸 US | View on Amazon | |
| PRENCO Fits: 2.4L L4 | 368078 | 🇺🇸 US 🇨🇦 CA | Includes 36-2041 Boot Kit | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | UF285T | 🇺🇸 US | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | E874 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WAI GLOBAL Fits: 2.4L L4 | CUF285 | 🇺🇸 US | View on Amazon |
Full Service Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: 2.4L L4 | 92192018 | 🇺🇸 US | Full Service Kit | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Fits: 2.4L L4 | IGC0134 | 🇺🇸 US | Coil On Plug IgnitionCoil Type: Pack | View on Amazon |
| DELPHI Fits: 2.4L L4 | GN10303 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular Fits: 2.4L L4 | 6738205 | 🇺🇸 US | Direct Ignition Coil or Coil On Plug | View on Amazon |
| WALKER PRODUCTS Popular Fits: 2.4L L4 | 9212018 | 🇺🇸 US | Single Coil | View on Amazon |
| HL MANDO Fits: 2.4L L4 | 21A0119 | 🇺🇸 US | New | View on Amazon |
| NGK Fits: 2.4L L4 | 48649 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | UF285 | 🇺🇸 US | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | COP239 | 🇺🇸 US | Mounting Bracket Included: No | View on Amazon |
| WELLS Fits: 2.4L L4 | 5C1155 | 🇺🇸 US | Requires External Resistor: YES | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
23 Ignition Coil parts are listed for the 2005 Kia Optima, from STANDARD MOTOR PRODUCTS, FAMOUS BRAND, WALKER PRODUCTS and 16 other brands. SKP SKUF285T carries the "Popular" badge.
Economy: 13 parts, from FAMOUS BRAND, STANDARD MOTOR PRODUCTS, SKP and 8 other brands. A representative part number is SKP SKUF285T.
Full Service Kit: 1 part, from WALKER PRODUCTS. A representative part number is WALKER PRODUCTS 92192018.
The Premium section lists 2 options from ASTEMO / HITACHI and DELPHI — a step above OE specification in materials, tolerances or warranty terms. ASTEMO / HITACHI IGC0134 is listed in this group.
The Standard Replacement section: 7 options from DENSO, WALKER PRODUCTS, HL MANDO and 4 other brands. DENSO 6738205 is listed in this group.
Ignition Misfire Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.4L L4 | 907804 | 🇺🇸 US | View on Amazon | |
| MOTORAD Fits: 2.4L L4 | 1KR383 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PC544T | 🇺🇸 US | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PC544 | 🇺🇸 US | View on Amazon |
This table covers the Ignition Misfire sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
4 Ignition Misfire Sensor parts are listed for the 2005 Kia Optima, from STANDARD MOTOR PRODUCTS, DORMAN and MOTORAD.
This group includes DORMAN 907804, MOTORAD 1KR383 and STANDARD MOTOR PRODUCTS PC544T and the remaining parts above.
Spark Plug
Summary: Notes include pre-set gaps of 0.032", 0.035", 0.040", 0.041", 0.043", 0.044", 0.045", 0.05", 0.054" and 0.063". Replacement brands in this table include CHAMPION, NGK and DENSO.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.4L L4 | 41629 | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION Popular Fits: 2.4L L4 | 322 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.041" | View on Amazon |
| NGK Popular Fits: 2.4L L4 | 6937 | 🇺🇸 US | V-PowerPre-Set Gap: 0.044" | View on Amazon |
| NGK Popular Fits: 2.4L L4 | 7634 | 🇺🇸 US | StandardPre-Set Gap: 0.044" | View on Amazon |
| CHAMPION Fits: 2.4L L4 | 3221 | 🇺🇸 US | Copper Plus | View on Amazon |
| DENSO Fits: 2.4L L4 | 3201 | 🇺🇸 US | U-Groove ConventionalPre-Set Gap: 0.044" | View on Amazon |
| MOTORCRAFT Fits: 2.4L L4 | SP467 | 🇺🇸 US 🇨🇦 CA | .044 Gap | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.4L L4 | 41802 | 🇺🇸 US 🇨🇦 CA | ProfessionalDouble Platinum | View on Amazon |
| CHAMPION Fits: 2.4L L4 | 7322 | 🇺🇸 US | Double Platinum PowerPre-Set Gap: 0.032" | View on Amazon |
| DENSO Fits: 2.4L L4 | 3114 | 🇺🇸 US | Double PlatinumPre-Set Gap: 0.044" | View on Amazon |
| MOTORCRAFT Fits: 2.4L L4 | SP485 | 🇺🇸 US | Double Platinum | View on Amazon |
| NGK Fits: 2.4L L4 | 5760 | 🇺🇸 US | Laser PlatinumPre-Set Gap: 0.044" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 2.4L L4 | SP1013 | 🇺🇸 US | Iridium XP | View on Amazon |
| AUTOLITE Fits: 2.4L L4 | XP3924 | 🇺🇸 US | Iridium XP Spark Plug Dual Display PackPre-Set Gap: 0.044" | View on Amazon |
| CHAMPION Fits: 2.4L L4 | 9007 | 🇺🇸 US | IridiumPre-Set Gap: 0.054" | View on Amazon |
| DENSO Fits: 2.4L L4 | 5305 | 🇺🇸 US | Iridium PowerHex Size: 20.6 mm | View on Amazon |
| DENSO Fits: 2.4L L4 | 4708 | 🇺🇸 US | Iridium TTHex Size: 20.6 mm | View on Amazon |
| NGK Fits: 2.4L L4 | 2115 | 🇺🇸 US | Iridium IXPre-Set Gap: 0.044" | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular Fits: 2.4L L4 | 7082 | 🇺🇸 US | G-PowerPre-Set Gap: 0.040" | View on Amazon |
| BOSCH Fits: 2.4L L4 | 6736 | 🇺🇸 US | OE Fine Wire PlatinumPre-Set Gap: 0.035" | View on Amazon |
| BOSCH Fits: 2.4L L4 | 4478 | 🇺🇸 US | PLATINUM+4Pre-Set Gap: 0.063" | View on Amazon |
| BOSCH Fits: 2.4L L4 | 4506 | 🇺🇸 US | PLATINUM IR FUSIONPre-Set Gap: 0.063" | View on Amazon |
| CHAMPION Fits: 2.4L L4 | 3031 | 🇺🇸 US | Platinum PowerPre-Set Gap: 0.05" | View on Amazon |
| DENSO Fits: 2.4L L4 | 4501 | 🇺🇸 US | Platinum TTTerminal Cap is Non-Removable | View on Amazon |
| MOTORCRAFT Fits: 2.4L L4 | SP497X | 🇺🇸 US | Platinum Spark PlugPlatinum | View on Amazon |
| MOTORCRAFT Fits: 2.4L L4 | SP485X | 🇺🇸 US | Platinum Spark PlugPlatinum | View on Amazon |
This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.
26 Spark Plug parts for the 2005 Kia Optima come from 8 brands — CHAMPION, NGK, DENSO and 5 other brands. The "Popular" part is ACDELCO 41629. Copper / Nickel, Double Platinum (lasts up to 3x longer than Copper / Nickel), Iridium (lasts up to 4x longer than Copper / Nickel) and Platinum (lasts up to 2x longer than Copper / Nickel) are all represented, and Platinum (lasts up to 2x longer than Copper / Nickel) alone accounts for 8 parts.
Spark Plug / Ignition Coil Boot
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BWD/NIEHOFF Popular Fits: 2.4L L4 | SPB127 | 🇺🇸 US 🇨🇦 CA | with Direct Ignition | View on Amazon |
| FAMOUS BRAND Popular Fits: 2.4L L4 | 250010869 | 🇺🇸 US 🇨🇦 CA | with Direct Ignition | View on Amazon |
| FAMOUS BRAND Fits: 2.4L L4 | 357066 | 🇺🇸 US 🇨🇦 CA | with Direct Ignition | View on Amazon |
| PRENCO Fits: 2.4L L4 | 362041 | 🇺🇸 US 🇨🇦 CA | 1.0KI(C), Spring Supplied Loosewith Direct Ignition | View on Amazon |
| PRENCO Fits: 2.4L L4 | 36204102 | 🇺🇸 US 🇨🇦 CA | Ignition Coil Boot KitSet of 2 Boots | View on Amazon |
| ULTRA-POWER Fits: 2.4L L4 | SPP63 | 🇺🇸 US 🇨🇦 CA | Superseded Multi-Packwith Direct Ignition | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | 935S | 🇺🇸 US | View on Amazon | |
| WALKER PRODUCTS Fits: 2.4L L4 | 900P2046 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular Fits: 2.4L L4 | 58919 | 🇺🇸 US | View on Amazon | |
| AUTOLITE Fits: 2.4L L4 | 50032 | 🇺🇸 US | Professional Series Coil on Plug Boot | View on Amazon |
| BECK/ARNLEY Fits: 2.4L L4 | 1751037 | 🇺🇸 US | Multi Coil System | View on Amazon |
| DENSO Fits: 2.4L L4 | 6714294 | 🇺🇸 US | Direct Ignition Coil Boot Kit2 Boots | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | SPP63E | 🇺🇸 US | View on Amazon |
This table covers the silicone and rubber boots that insulate the coil-to-plug spark path. Typical signs include a misfire in the rain, carbon tracking on the boot, or a snap when you pop the coil off. Replace boots as a set on a high-mileage engine; one cracked boot will take the coil with it.
13 Spark Plug / Ignition Coil Boot parts are listed for the 2005 Kia Optima, from FAMOUS BRAND, PRENCO, BWD/NIEHOFF and 8 other brands. BWD/NIEHOFF SPB127 carries the "Popular" badge.
Economy: 8 parts, from FAMOUS BRAND, PRENCO, BWD/NIEHOFF and 3 other brands. A representative part number is BWD/NIEHOFF SPB127.
The Standard Replacement section: 5 options from NGK, AUTOLITE, BECK/ARNLEY and 2 other brands. NGK 58919 is listed in this group.
Spark Plug Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTO 7 Fits: 2.4L L4 | 6440085 | 🇺🇸 US | Use With: 644-0019 | View on Amazon |
| HYUNDAI Fits: 2.4L L4 | 2244338010 | 🇺🇸 US | View on Amazon |
This table covers the seals at the Spark Plug Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
2 Spark Plug Tube Seal parts are listed for the 2005 Kia Optima, from AUTO 7 and HYUNDAI.
Part numbers include AUTO 7 6440085 and HYUNDAI 2244338010.
Spark Plug Wire
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | 4683 | 🇺🇸 US | SetCOP Boots Not Included | View on Amazon |
| B&B Fits: 2.4L L4 | S428772 | 🇺🇸 US | Suppressor Wire Set | View on Amazon |
| FAMOUS BRAND Fits: 2.4L L4 | 354281 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | 50278 | 🇺🇸 US 🇨🇦 CA | COP Boots Not IncludedSet | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular Fits: 2.4L L4 | 3879 | 🇺🇸 US | Set | View on Amazon |
| DENSO Fits: 2.4L L4 | 6714248 | 🇺🇸 US | Spark Plug Wire Set7mm | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | 7574 | 🇺🇸 US | Standard® PremiumSet | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | 55802 | 🇺🇸 US | IntermotorSet | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | 55802K | 🇺🇸 US | IntermotorSet | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | 9532 | 🇺🇸 US | United-PackardSet | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | 9532BK | 🇺🇸 US | United-Packard | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.4L L4 | 9444J | 🇺🇸 US 🇨🇦 CA | GoldSet | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | 27574 | 🇺🇸 US | Pro SeriesSet | View on Amazon |
| B&B Fits: 2.4L L4 | M428772 | 🇺🇸 US | Platinum Class Laser Mag | View on Amazon |
| FACET Fits: 2.4L L4 | 47241 | 🇺🇸 US | Set | View on Amazon |
| WALKER PRODUCTS Fits: 2.4L L4 | 9241891 | 🇺🇸 US | Direct FitSet | View on Amazon |
This table covers the Spark Plug wires.
16 Spark Plug Wire parts are listed for the 2005 Kia Optima, from STANDARD MOTOR PRODUCTS, B&B, UNITED MOTOR PRODUCTS and 6 other brands. STANDARD MOTOR PRODUCTS 4683 carries the "Popular" badge.
Economy: 4 parts, from STANDARD MOTOR PRODUCTS, B&B and FAMOUS BRAND. A representative part number is STANDARD MOTOR PRODUCTS 4683.
The Premium section: 7 options from STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS, NGK and 1 other brand. NGK 3879 is listed in this group.
The Standard Replacement section: 5 options from ACDELCO, STANDARD MOTOR PRODUCTS, B&B and 2 other brands. ACDELCO 9444J is listed in this group.
Buying Ignition Parts for a 2005 Kia Optima
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Every ignition part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Spark Plug and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 2005 Kia Optima?
Our catalog currently lists 129 ignition parts for the 2005 Kia Optima across 10 subcategories and 34 brands, covering both the 2.4L L4 and the 2.7L V6. Each part is matched to the engine(s) it fits.
Do ignition parts differ between 2005 Kia Optima engines?
Yes. Every ignition part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of ignition problems on a 2005 Kia Optima?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What spark-plug gap is listed for the 2005 Kia Optima?
Notes on this page include pre-set gaps of 0.032", 0.035", 0.040", 0.041", 0.043", 0.044", 0.045", 0.05", 0.054" and 0.063". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
What should I replace at the same time?
Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2005 Kia Optima was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2005 Kia Optima?
First match the engine — each row shows which engine(s) the part fits. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2005 Kia Optima
Ignition Parts for Other Kia Optima Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.