92 Ignition parts are listed for the 2015 Kia Optima, in 7 part types, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2015 Kia Optima, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 67 parts of the 92 listed are Ignition Coil (28 parts), Spark Plug (20 parts) and Camshaft Position Sensor (19 parts). The other 4 part types cover the remaining 25 parts.
The 2015 Kia Optima was sold with 3 engines. 36 parts fit every engine; the other 56 are engine-specific. Each part shows which engine(s) it fits.
28 brands supply ignition parts for the 2015 Kia Optima, led by STANDARD MOTOR PRODUCTS (11 parts), WALKER PRODUCTS (9 parts) and SKP (7 parts), plus 25 more brands. Quality grades include Standard Replacement, Economy and Iridium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2015 Kia Optima. 24 parts have it, including SKP SK907825 (Camshaft Position Sensor) and HOLSTEIN 2CRK0146 (Crankshaft Position Sensor). Each part number opens a page with every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: all 2015 Optima engines | SK907825 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular Fits: all 2015 Optima engines | PC719T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| DORMAN Fits: all 2015 Optima engines | 907825 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: all 2015 Optima engines | 2CAM0300 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO Fits: all 2015 Optima engines | 4E1044 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: all 2015 Optima engines | CAM217 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2015 Optima engines | PC719 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Popular Fits: all 2015 Optima engines | 2351245 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| ASTEMO / HITACHI Fits: all 2015 Optima engines | CPS0137 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: all 2015 Optima engines | 1800553 | 🇺🇸 US 🇨🇦 CA | SX Turbo | View on Amazon |
| DELPHI Fits: all 2015 Optima engines | SS11349 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HELLA Fits: all 2015 Optima engines | 358380201 | 🇺🇸 US 🇨🇦 CA | EX Model or LX Model or SX Model | View on Amazon |
| HL MANDO Fits: all 2015 Optima engines | 22A1220 | 🇺🇸 US 🇨🇦 CA | New | View on Amazon |
| NTK Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | EC0311 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NTK Fits: 2.4L L4 | EC0273 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VEMO Fits: all 2015 Optima engines | V52720156 | 🇺🇸 US 🇨🇦 CA | Plug (Connector): 3 Pins | View on Amazon |
| WALKER PRODUCTS Fits: all 2015 Optima engines | 2352412 | 🇺🇸 US 🇨🇦 CA | Combo KitConnector Quantity: 9 | View on Amazon |
| WELLS Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | 5S7210 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 | 5S15134 | 🇺🇸 US 🇨🇦 CA | 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.
19 Camshaft Position Sensor parts for the 2015 Kia Optima come from 15 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, NTK and 12 other brands. The "Popular" part is SKP SK907825. 15 parts fit every engine; the other 4 are engine-specific.
The Economy section lists 6 options from SKP, STANDARD MOTOR PRODUCTS, DORMAN and 3 other brands — the catalog's value-priced group. SKP SK907825 is listed in this group.
In the Standard Replacement grade, WALKER PRODUCTS, NTK, WELLS and 7 other brands supply 13 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS PC719.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Popular Fits: all 2015 Optima engines | 2CRK0146 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS | PC710T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| AUTOTECNICA Fits: all 2015 Optima engines | HY1417824 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO Fits: all 2015 Optima engines | 4D1117 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: all 2015 Optima engines | SK907788 | 🇺🇸 US 🇨🇦 CA | 3 Terminals | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged | CRK434 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VEMO Fits: all 2015 Optima engines | V52720154 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular Fits: all 2015 Optima engines | CPS0138 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI Popular Fits: all 2015 Optima engines | SS11329 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HL MANDO Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 22A1229 | 🇺🇸 US 🇨🇦 CA | New | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS | PC710 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: all 2015 Optima engines | 1800552 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NTK Fits: all 2015 Optima engines | EH0400 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged | PC1021 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: all 2015 Optima engines | 2351160 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WALKER PRODUCTS Fits: all 2015 Optima engines | 2352406 | 🇺🇸 US 🇨🇦 CA | Combo Kit | View on Amazon |
| WALKER PRODUCTS Fits: all 2015 Optima engines | 2352412 | 🇺🇸 US 🇨🇦 CA | Combo KitConnector Quantity: 9 | View on Amazon |
| WELLS Fits: all 2015 Optima engines | 5S7676 | 🇺🇸 US 🇨🇦 CA | 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.
18 Crankshaft Position Sensor parts for the 2015 Kia Optima come from 14 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, HOLSTEIN and 11 other brands. The "Popular" part is HOLSTEIN 2CRK0146. 13 parts fit every engine; the other 5 are engine-specific.
The Economy section: 7 options from HOLSTEIN, STANDARD MOTOR PRODUCTS, AUTOTECNICA and 4 other brands. HOLSTEIN 2CRK0146 is listed in this group.
Standard Replacement: 11 parts, from WALKER PRODUCTS, STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI and 5 other brands. A representative part number is ASTEMO / HITACHI CPS0138.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| B&B Popular Fits: all 2015 Optima engines | BB2611 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | SKIC162 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM Popular Fits: 2.0L L4 Turbocharged | C856 | 🇺🇸 US 🇨🇦 CA | Ignition Coil Mounts to Cylinder Head | View on Amazon |
| HOLSTEIN Fits: 2.0L L4 Turbocharged | 2IGC0453 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 2IGC0427 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | C773 | 🇺🇸 US 🇨🇦 CA | Ignition Coil Mounts to Cylinder Head | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | UF611T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| WAI GLOBAL Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | CUF2153 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | IGC0175 | 🇺🇸 US 🇨🇦 CA | Coil On PlugCoil Type: Individual | View on Amazon |
| ASTEMO / HITACHI Fits: 2.0L L4 Turbocharged | IGC0583 | 🇺🇸 US 🇨🇦 CA | Coil on Plug | View on Amazon |
| DELPHI Fits: all 2015 Optima engines | GN10568 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular Fits: 2.0L L4 Turbocharged | 6738310 | 🇺🇸 US 🇨🇦 CA | Direct Ignition Coil or Stick Coil | View on Amazon |
| DENSO Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 6738311 | 🇺🇸 US 🇨🇦 CA | Direct Ignition Coil or Stick Coil | View on Amazon |
| WALKER PRODUCTS Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 9212148 | 🇺🇸 US 🇨🇦 CA | Single Coil | View on Amazon |
| BECK/ARNLEY Fits: 2.0L L4 Turbocharged | 1788510 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 1788353 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FACET Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 96456 | 🇺🇸 US 🇨🇦 CA | EX Model or LX Model or SX Model | View on Amazon |
| HL MANDO Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 21A0127 | 🇺🇸 US 🇨🇦 CA | New | View on Amazon |
| HYUNDAI Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 273003F100 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NGK Fits: 2.0L L4 Turbocharged | 48873 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NGK Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 48939 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged | UF647 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | UF611 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | COP537 | 🇺🇸 US 🇨🇦 CA | Body code TF | View on Amazon |
| WALKER PRODUCTS Fits: 2.0L L4 Turbocharged | 9212172 | 🇺🇸 US 🇨🇦 CA | Single Coil | View on Amazon |
| WALKER PRODUCTS Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 92841314 | 🇺🇸 US 🇨🇦 CA | Coil Set | View on Amazon |
| WELLS Fits: 2.0L L4 Turbocharged | 5C1862 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 5C1724 | 🇺🇸 US 🇨🇦 CA | 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.
28 Ignition Coil parts for the 2015 Kia Optima come from 17 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, SPECTRA PREMIUM and 14 other brands. The "Popular" part is B&B BB2611. They are grouped as Economy, Premium and Standard Replacement, with Standard Replacement the largest group at 17 parts from WALKER PRODUCTS, DENSO, BECK/ARNLEY and 7 other brands.
Ignition Lock Cylinder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2015 Optima engines | US1249 | 🇺🇸 US 🇨🇦 CA | Includes Switch | View on Amazon |
This table covers the lock cylinders in the ignition switch.
This group shows a single part: STANDARD MOTOR PRODUCTS US1249.
Spark Plug
Summary: Notes include pre-set gaps of 0.027", 0.030", 0.031", 0.032", 0.033", 0.035", 0.036", 0.040" and 0.044". Replacement brands in this table include DENSO, BOSCH and SKP.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION Popular Fits: 2.4L L4 ELECTRIC/GAS | 445 | 🇺🇸 US 🇨🇦 CA | Copper PlusPre-Set Gap: 0.033" | View on Amazon |
| DENSO Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | 3445 | 🇺🇸 US 🇨🇦 CA | U-Groove ConventionalPre-Set Gap: 0.035" | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | 8132 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double PlatinumPre-Set Gap: 0.031" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | 5356 | 🇺🇸 US 🇨🇦 CA | Iridium PowerPre-Set Gap: 0.035" | View on Amazon |
| NGK Popular Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | 97080 | 🇺🇸 US 🇨🇦 CA | Laser Iridium High IgnitabilityPre-Set Gap: 0.031" | View on Amazon |
| NGK Popular Fits: 2.4L L4 | 93199 | 🇺🇸 US 🇨🇦 CA | Laser Iridium High IgnitabilityPre-Set Gap: 0.044" | View on Amazon |
| SKP Popular Fits: 2.4L L4 ELECTRIC/GAS, 2.4L L4 | SP1040 | 🇺🇸 US 🇨🇦 CA | Tapered Ground Electrode with Platinum Chip | View on Amazon |
| AUTOLITE Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | XP5703 | 🇺🇸 US 🇨🇦 CA | Iridium XPPre-Set Gap: 0.032" | View on Amazon |
| AUTOLITE Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | AI5703 | 🇺🇸 US 🇨🇦 CA | Iridium Ultra | View on Amazon |
| BOSCH Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | YR6NI332S | 🇺🇸 US 🇨🇦 CA | OE Fine Wire IridiumPre-Set Gap: 0.027" | View on Amazon |
| BOSCH Fits: 2.4L L4 | 9624 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double IridiumPre-Set Gap: 0.040" | View on Amazon |
| BOSCH Fits: 2.4L L4 | 96323 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double Iridium Pin-to-PinPre-Set Gap: 0.040" | View on Amazon |
| CHAMPION Fits: 2.4L L4 | 9047 | 🇺🇸 US 🇨🇦 CA | IridiumPre-Set Gap: 0.04" | View on Amazon |
| CHAMPION Fits: 2.4L L4 ELECTRIC/GAS | 9409 | 🇺🇸 US 🇨🇦 CA | IridiumPre-Set Gap: 0.033" | View on Amazon |
| DENSO Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | 3501 | 🇺🇸 US 🇨🇦 CA | Iridium Long LifePre-Set Gap: 0.032" | View on Amazon |
| DENSO Fits: 2.4L L4 | 3478 | 🇺🇸 US 🇨🇦 CA | Iridium Long LifeSuper Ignition Plug (SIP) | View on Amazon |
| SKP Fits: all 2015 Optima engines | SP1033 | 🇺🇸 US 🇨🇦 CA | Tapered Ground Electrode with Platinum Chip | View on Amazon |
| SKP Fits: 2.0L L4 Turbocharged, 2.4L L4 ELECTRIC/GAS | SKAPSP241 | 🇺🇸 US 🇨🇦 CA | Gap 0.036" | View on Amazon |
| SKP Fits: 2.4L L4 | SK93199 | 🇺🇸 US 🇨🇦 CA | Gap 0.044" | View on Amazon |
Ruthenium (maximum durability & ignitability)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular Fits: 2.4L L4 | 97292 | 🇺🇸 US 🇨🇦 CA | Ruthenium HX High IgnitabilityPre-Set Gap: 0.044" | 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.
20 Spark Plug parts are listed for the 2015 Kia Optima, from DENSO, BOSCH, SKP and 3 other brands. CHAMPION 445 carries the "Popular" badge. 1 part fits every engine; the other 19 are engine-specific.
In the Copper / Nickel grade, CHAMPION and DENSO supply 2 parts: grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. A representative part number is CHAMPION 445.
In the Double Platinum (lasts up to 3x longer than Copper / Nickel) grade, BOSCH supplies 1 part: grouped under the catalog's "Double Platinum (lasts up to 3x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is BOSCH 8132.
The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 16 options from SKP, DENSO, BOSCH and 3 other brands — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. DENSO 5356 is listed in this group.
In the Ruthenium (maximum durability & ignitability) grade, NGK supplies 1 part: grouped under the catalog's "Ruthenium (maximum durability & ignitability)" designation — the notes column spells out what sets them apart. A representative part number is NGK 97292.
Spark Plug / Ignition Coil Boot
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2015 Optima engines | 19731 | 🇺🇸 US 🇨🇦 CA | Federal Wire | View on Amazon |
| WALKER PRODUCTS Fits: all 2015 Optima engines | 900P2129 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2015 Optima engines | SPP176E | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ACDELCO Fits: all 2015 Optima engines | 16137 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| NGK Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 59028 | 🇺🇸 US 🇨🇦 CA | 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.
5 Spark Plug / Ignition Coil Boot parts for the 2015 Kia Optima come from 4 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, ACDELCO and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS SPP176E. 4 parts fit every engine; the other 1 is engine-specific.
The Economy section: 2 options from STANDARD MOTOR PRODUCTS and WALKER PRODUCTS. STANDARD MOTOR PRODUCTS 19731 is listed in this group.
Standard Replacement: 3 parts, from STANDARD MOTOR PRODUCTS, ACDELCO and NGK. A representative part number is STANDARD MOTOR PRODUCTS SPP176E.
Part numbers include STANDARD MOTOR PRODUCTS SPP176E, STANDARD MOTOR PRODUCTS 19731 and WALKER PRODUCTS 900P2129, among others listed above.
Spark Plug Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.0L L4 Turbocharged | 823270 | 🇺🇸 US 🇨🇦 CA | Outer Diameter [MM]: 44 | 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.
This group shows a single part: ELRING 823270.
Buying Ignition Parts for a 2015 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. Some ignition parts fit every engine; others are 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: Ignition Coil and Spark Plug .
Frequently Asked Questions
How many ignition parts fit the 2015 Kia Optima?
Our catalog currently lists 92 ignition parts for the 2015 Kia Optima across 7 subcategories and 28 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part is matched to the engine(s) it fits.
Do ignition parts differ between 2015 Kia Optima engines?
Some do. 36 parts fit every engine; the other 56 are engine-specific. Each row (and the filter at the top) shows which. 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 2015 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 2015 Kia Optima?
Notes on this page include pre-set gaps of 0.027", 0.030", 0.031", 0.032", 0.033", 0.035", 0.036", 0.040" and 0.044". 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 2015 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 2015 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 2015 Kia Optima
Ignition Parts for Other Kia Optima Years
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