The 2008 Kia Optima has 128 electrical switch & relay parts with verified fitment on this page — 22 part types and 19 brands, covering both the 2.4L L4 and the 2.7L V6. Each part includes a manufacturer part number and application notes.
On the 2008 Kia Optima, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. Most of the listed parts are Brake Light Switch (15 parts), Oil Pressure Sender / Switch (13 parts) and Turn Signal Switch (13 parts). The other 19 part types cover the remaining 87 parts.
The 2008 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.
19 brands supply electrical switch & relay parts for the 2008 Kia Optima, led by STANDARD MOTOR PRODUCTS (31 parts), WELLS (29 parts) and ROSTRA (15 parts), plus 16 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2008 Kia Optima. 24 parts have it, including FOUR SEASONS 37324 (A/C Refrigerant Pressure Switch) and VEMO V52730014 (Back Up / Reverse Lamp Switch). Each part number opens a page with every vehicle that part fits.
A/C Pressure Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 2.4L L4 | V52730034 | 🇺🇸 US | View on Amazon |
This table covers the A/C Pressure Safety switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: VEMO V52730034.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Popular Fits: 2.4L L4 | 37324 | 🇺🇸 US | Pressure Switch | View on Amazon |
| UAC Popular Fits: 2.4L L4 | SW9969C | 🇺🇸 US | Pressure Transducer | View on Amazon |
| FAMOUS BRAND Fits: 2.4L L4 | 1802492322 | 🇺🇸 US 🇨🇦 CA | Compressor Cut-Off Switch | View on Amazon |
| GPD Fits: 2.4L L4 | 1711756 | 🇺🇸 US | Pressure Transducer | View on Amazon |
| HYUNDAI Fits: 2.4L L4 | 9775238000 | 🇺🇸 US | At Receiver Drier | View on Amazon |
| HYUNDAI Fits: 2.4L L4 | 977213K000 | 🇺🇸 US | Included with liquid line, suction tube, hose & tube assembly, pressure line assembly | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PCS195 | 🇺🇸 US | Low PressureCut-Off | View on Amazon |
| WELLS Fits: 2.4L L4 | 5S16579 | 🇺🇸 US | CUT-OFF | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S9347 | 🇺🇸 US | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
9 A/C Refrigerant Pressure Switch parts are listed for the 2008 Kia Optima, from HYUNDAI, WELLS, FOUR SEASONS and 4 other brands. FOUR SEASONS 37324 carries the "Popular" badge.
This group includes FOUR SEASONS 37324, UAC SW9969C and FAMOUS BRAND 1802492322 and the remaining parts above.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.4L L4 | 933332581 | 🇺🇸 US | 5-Pin ConnectorColor: Black | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 600134 | 🇺🇸 US | with Stamping # 0K2A2-67-740 | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 600277 | 🇺🇸 US | 10/20 Amps | View on Amazon |
| WELLS Fits: 2.4L L4 | 1R2112 | 🇺🇸 US | with Stamping # 0K2A2-67740 | View on Amazon |
This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
4 Accessory Power Relay parts for the 2008 Kia Optima come from 3 brands — ROSTRA, HELLA and WELLS.
Part numbers include HELLA 933332581, ROSTRA 600134 and ROSTRA 600277, among others listed above.
Back Up / Reverse Lamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Popular Fits: 2.4L L4 | V52730014 | 🇺🇸 US | Manual trans.Back up light switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.4L L4 | 2011885 | 🇺🇸 US | Manual trans. | View on Amazon |
| FACET Fits: 2.4L L4 | 76309 | 🇺🇸 US | Manual trans. | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S5803 | 🇺🇸 US | Connector Shape: Rectangular | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: 2.4L L4 | 9386049600 | 🇺🇸 US | View on Amazon |
This table covers the Back Up / Reverse Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Back Up / Reverse Lamp Switch parts are listed for the 2008 Kia Optima, from VEMO, BECK/ARNLEY, FACET and 2 other brands. VEMO V52730014 carries the "Popular" badge.
In the Economy grade, VEMO supplies 1 part: the catalog's value-priced group. A representative part number is VEMO V52730014.
The Standard Replacement section lists 3 options from BECK/ARNLEY, FACET and WELLS — built to original-equipment specification. BECK/ARNLEY 2011885 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
This group includes VEMO V52730014, BECK/ARNLEY 2011885 and FACET 76309 and the remaining parts above.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 2.4L L4 | SLA1013 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: 2.4L L4 | 2BLS0013 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | SLS342T | 🇺🇸 US | T-Series | View on Amazon |
| VEMO Fits: 2.4L L4 | V53730002 | 🇺🇸 US | Includes NutPlug (Connector): 4 Pins | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTO 7 Popular Fits: 2.4L L4 | 5040059A | 🇺🇸 US | 4 PIN | View on Amazon |
| HYUNDAI Popular Fits: 2.4L L4 | 938103K000 | 🇺🇸 US | 4 PIN | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | SLS342 | 🇺🇸 US | View on Amazon | |
| AUTO 7 Fits: 2.4L L4 | 5040059 | 🇺🇸 US | 4 PIN | View on Amazon |
| BECK/ARNLEY Fits: 2.4L L4 | 2011887 | 🇺🇸 US | View on Amazon | |
| FACET Fits: 2.4L L4 | 71125 | 🇺🇸 US | with Straight Connector | View on Amazon |
| FACET Fits: 2.4L L4 | 71294 | 🇺🇸 US | with Right Angle Connector | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 620001 | 🇺🇸 US | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | SW407 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: 2.4L L4 | 1S5749 | 🇺🇸 US | Mounting Hardware Included: No | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S5748 | 🇺🇸 US | 2 Blade Terminal | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
15 Brake Light Switch parts are listed for the 2008 Kia Optima, from STANDARD MOTOR PRODUCTS, AUTO 7, FACET and 8 other brands. AUTO 7 5040059A carries the "Popular" badge.
Economy: 4 parts, from FAMOUS BRAND, HOLSTEIN, STANDARD MOTOR PRODUCTS and 1 other brand. A representative part number is FAMOUS BRAND SLA1013.
The Standard Replacement section: 11 options from AUTO 7, FACET, WELLS and 5 other brands. AUTO 7 5040059A is listed in this group.
Clutch Pedal Position / Starter Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FACET Popular Fits: 2.4L L4 | 71289 | 🇺🇸 US | View on Amazon | |
| HYUNDAI Popular Fits: 2.4L L4 | 9384038000 | 🇺🇸 US | Manual trans. | View on Amazon |
| HYUNDAI Fits: 2.4L L4 | 938402E000 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | NS300 | 🇺🇸 US | with Manual Shift | View on Amazon |
| VEMO Fits: 2.4L L4 | V52730022 | 🇺🇸 US | Manual trans. | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S5779 | 🇺🇸 US | Connector Color: WhiteWiring Harness Length: 2.62 In | View on Amazon |
This table covers the Clutch Pedal Position / Starter Safety switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
6 Clutch Pedal Position / Starter Safety Switch parts for the 2008 Kia Optima come from 5 brands — HYUNDAI, FACET, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is FACET 71289.
This group includes FACET 71289, HYUNDAI 9384038000 and HYUNDAI 938402E000 and the remaining parts above.
Cruise Control Release Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: 2.4L L4 | 938102E000 | 🇺🇸 US | Manual trans.2 PIN - AT CLUTCH PEDAL | View on Amazon |
This table covers the Cruise Control Release switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2008 Kia Optima — HYUNDAI 938102E000.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1770 | 🇺🇸 US | without Fog Lightswithout Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1772 | 🇺🇸 US | Finish: Metal, Plastic, Rubber | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 640502 | 🇺🇸 US | with Fog Lightswithout Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1829 | 🇺🇸 US | without Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1826 | 🇺🇸 US | with automatic headlights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11443 | 🇺🇸 US | with Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11435 | 🇺🇸 US | without Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11440 | 🇺🇸 US | with Automatic Headlightswith Fog Lights | View on Amazon |
This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
8 Dimmer Switch parts for the 2008 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, WELLS and ROSTRA. The "Popular" part is STANDARD MOTOR PRODUCTS CBS1770.
This group includes STANDARD MOTOR PRODUCTS CBS1770, STANDARD MOTOR PRODUCTS CBS1772 and ROSTRA 640502 and the remaining parts above.
Door Jamb Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 | 650034 | 🇺🇸 US | Fits Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | AW1005 | 🇺🇸 US | All Doors | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S8910 | 🇺🇸 US | Fits Rear | View on Amazon |
This table covers the Door Jamb switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Door Jamb Switch parts for the 2008 Kia Optima come from 3 brands — ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: ROSTRA 650034, STANDARD MOTOR PRODUCTS AW1005 and WELLS 1S8910.
Fog / Driving Lamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BWD/NIEHOFF Fits: 2.4L L4 | S16204 | 🇺🇸 US 🇨🇦 CA | Fits Fog Lamp Switchwithout AUTO HEADLIGHTS | View on Amazon |
| SHEE-MAR Fits: 2.4L L4 | SM1227 | 🇺🇸 US | with Fog Lightswithout Automatic Headlights | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1829 | 🇺🇸 US | without Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1826 | 🇺🇸 US | with automatic headlights | View on Amazon |
This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Fog / Driving Lamp Switch parts for the 2008 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, BWD/NIEHOFF and SHEE-MAR.
The Economy section: 2 options from BWD/NIEHOFF and SHEE-MAR. BWD/NIEHOFF S16204 is listed in this group.
Standard Replacement: 2 parts, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS CBS1829.
Listed part numbers: BWD/NIEHOFF S16204, SHEE-MAR SM1227 and STANDARD MOTOR PRODUCTS CBS1829, plus the other parts above.
Headlamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BWD/NIEHOFF Fits: 2.4L L4 | S16204 | 🇺🇸 US 🇨🇦 CA | Fits with Dimmerwithout Auto Headlight Controlor with Dimmer | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1770 | 🇺🇸 US | without Fog Lightswithout Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1772 | 🇺🇸 US | Finish: Metal, Plastic, Rubber | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 640502 | 🇺🇸 US | with Fog Lightswithout Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1829 | 🇺🇸 US | without Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1826 | 🇺🇸 US | with automatic headlights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11443 | 🇺🇸 US | with Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11435 | 🇺🇸 US | without Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11440 | 🇺🇸 US | with Automatic Headlightswith Fog Lights | View on Amazon |
This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
9 Headlamp Switch parts for the 2008 Kia Optima come from 4 brands — STANDARD MOTOR PRODUCTS, WELLS, BWD/NIEHOFF and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS CBS1770.
The Economy section: 1 option from BWD/NIEHOFF. BWD/NIEHOFF S16204 is listed in this group.
Standard Replacement: 8 parts, from STANDARD MOTOR PRODUCTS, WELLS and ROSTRA. A representative part number is STANDARD MOTOR PRODUCTS CBS1770.
Part numbers include STANDARD MOTOR PRODUCTS CBS1770, BWD/NIEHOFF S16204 and STANDARD MOTOR PRODUCTS CBS1772, among others listed above.
Ignition Starter Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | US693T | 🇺🇸 US | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | US693 | 🇺🇸 US | without Housing | View on Amazon |
| BECK/ARNLEY Fits: 2.4L L4 | 2011929 | 🇺🇸 US | with BracketDoes Not come with keys | View on Amazon |
| HYUNDAI Fits: 2.4L L4 | 819102G000 | 🇺🇸 US | View on Amazon | |
| ROSTRA Fits: 2.4L L4 | 630150 | 🇺🇸 US | Automatic trans. | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | US1087 | 🇺🇸 US | Automatic trans.Assembly | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KIA Fits: 2.4L L4 | 819102G000 | 🇺🇸 US | View on Amazon |
This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
7 Ignition Starter Switch parts for the 2008 Kia Optima come from 5 brands — STANDARD MOTOR PRODUCTS, BECK/ARNLEY, HYUNDAI and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS US693.
The Economy section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS US693T is listed in this group.
Standard Replacement: 5 parts, from STANDARD MOTOR PRODUCTS, BECK/ARNLEY, HYUNDAI and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS US693.
1 further part sits outside the graded sections, with the same engine-level match.
This group includes STANDARD MOTOR PRODUCTS US693, STANDARD MOTOR PRODUCTS US693T and BECK/ARNLEY 2011929 and the remaining parts above.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 | 1R3554 | 🇺🇸 US | 20/10 Amps | View on Amazon |
| WELLS Fits: 2.4L L4 | 1R2259 | 🇺🇸 US | with 4 Terminalswith Stamping # 95230-38000 | View on Amazon |
This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
WELLS supplies both parts for the 2008 Kia Optima.
Listed part numbers: WELLS 1R3554 and WELLS 1R2259.
Neutral Safety Switch / Range Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.4L L4 | 2012708 | 🇺🇸 US | View on Amazon | |
| HYUNDAI Fits: 2.4L L4 | 4270039055 | 🇺🇸 US | View on Amazon | |
| ROSTRA Fits: 2.4L L4 | 670008 | 🇺🇸 US | View on Amazon | |
| VEMO Fits: 2.4L L4 | V52730057 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: 2.4L L4 | 1S5750 | 🇺🇸 US | Automatic Trans | View on Amazon |
This table covers the Neutral Safety Switch / Range 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.
5 Neutral Safety Switch / Range Sensor parts are listed for the 2008 Kia Optima, from BECK/ARNLEY, HYUNDAI, ROSTRA and 2 other brands.
This group includes BECK/ARNLEY 2012708, HYUNDAI 4270039055 and ROSTRA 670008 and the remaining parts above.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 2.4L L4 | 2OPS0001 | 🇺🇸 US | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PS411T | 🇺🇸 US | T-Series | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | OPS189 | 🇺🇸 US | Long Designwith Light | View on Amazon |
| VEMO Fits: 2.4L L4 | V527300021 | 🇺🇸 US | Pressure [Bar]: 0.3 | View on Amazon |
| WALKER PRODUCTS Fits: 2.4L L4 | 2561059 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular Fits: 2.4L L4 | 2011771 | 🇺🇸 US | with Light | View on Amazon |
| HELLA Popular Fits: 2.4L L4 | 009600251 | 🇺🇸 US | 1-Pin Connector | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | PS411 | 🇺🇸 US | Terminal Quantity: 1Terminal Type: Blade | View on Amazon |
| FACET Fits: 2.4L L4 | 70195 | 🇺🇸 US | View on Amazon | |
| GPD Fits: 2.4L L4 | 1815237 | 🇺🇸 US | View on Amazon | |
| HYUNDAI Fits: 2.4L L4 | 9475037100 | 🇺🇸 US | View on Amazon | |
| ROSTRA Fits: 2.4L L4 | 501242 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: 2.4L L4 | 1S6857 | 🇺🇸 US | with Light | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
13 Oil Pressure Sender / Switch parts are listed for the 2008 Kia Optima, from STANDARD MOTOR PRODUCTS, HOLSTEIN, UNITED MOTOR PRODUCTS and 9 other brands. BECK/ARNLEY 2011771 carries the "Popular" badge.
Economy: 5 parts, from HOLSTEIN, STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and 2 other brands. A representative part number is HOLSTEIN 2OPS0001.
The Standard Replacement section: 8 options from BECK/ARNLEY, HELLA, STANDARD MOTOR PRODUCTS and 5 other brands. BECK/ARNLEY 2011771 is listed in this group.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 | 1S9374 | 🇺🇸 US | View on Amazon |
This table covers the Parking Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2008 Kia Optima — WELLS 1S9374.
Power Seat Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | PSW14 | 🇺🇸 US | Front Right | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 662590 | 🇺🇸 US | Front Left | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 662595 | 🇺🇸 US | Front Right | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | PSW145 | 🇺🇸 US | Front Left | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11142 | 🇺🇸 US | Connector Gender: Female | View on Amazon |
This table covers the Power Seat switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Power Seat Switch parts for the 2008 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, ROSTRA and WELLS. The "Popular" part is STANDARD MOTOR PRODUCTS PSW14.
Part numbers include STANDARD MOTOR PRODUCTS PSW14, ROSTRA 662590 and ROSTRA 662595, among others listed above.
Power Window Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 | 600192 | 🇺🇸 US | with Stamping # 95230-38000with 4 Blade Terminals | View on Amazon |
This table covers the relays that control the Power Window circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: ROSTRA 600192.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 2.4L L4 | 1S9433 | 🇺🇸 US | Rear RightGray | View on Amazon |
| WELLS Popular Fits: 2.4L L4 | 1S9423 | 🇺🇸 US | Front Left | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | DWS1113 | 🇺🇸 US | Rear LeftBeige | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | DWS1108 | 🇺🇸 US | Black | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S9432 | 🇺🇸 US | Rear RightBeige | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S13595 | 🇺🇸 US | Fits Rear LeftBlack | View on Amazon |
This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
6 Power Window Switch parts are listed for the 2008 Kia Optima, from WELLS and STANDARD MOTOR PRODUCTS. WELLS 1S9433 carries the "Popular" badge.
Part numbers include WELLS 1S9433, WELLS 1S9423 and STANDARD MOTOR PRODUCTS DWS1113, among others listed above.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Popular Fits: 2.4L L4 | 1802511331 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | RY266 | 🇺🇸 US | View on Amazon | |
| BWD/NIEHOFF Fits: 2.4L L4 | R4152 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FAMOUS BRAND Fits: 2.4L L4 | RAA1545 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 | 600431 | 🇺🇸 US | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | RLY61 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: 2.4L L4 | 1R1394 | 🇺🇸 US | Universal RelayFor Pigtail Connector Use 1P1212, 40 Amp | View on Amazon |
This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
7 Starter Motor Control Relay parts for the 2008 Kia Optima come from 6 brands — FAMOUS BRAND, STANDARD MOTOR PRODUCTS, BWD/NIEHOFF and 3 other brands. The "Popular" part is FAMOUS BRAND 1802511331.
This group includes FAMOUS BRAND 1802511331, STANDARD MOTOR PRODUCTS RY266 and BWD/NIEHOFF R4152 and the remaining parts above.
Turn Signal Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BWD/NIEHOFF Fits: 2.4L L4 | S16204 | 🇺🇸 US 🇨🇦 CA | Fits Turn Indicator Switchwithout AUTO HEADLIGHT CONTROL | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1770 | 🇺🇸 US | without Fog Lightswithout Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1829 | 🇺🇸 US | without Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | CBS1772 | 🇺🇸 US | Finish: Metal, Plastic, Rubber | View on Amazon |
| KIA Fits: 2.4L L4 | 934102G000 | 🇺🇸 US | without AUTO HEADLIGHTSwithout FOG LAMPS | View on Amazon |
| KIA Fits: 2.4L L4 | 934102G300 | 🇺🇸 US | with Auto Headlampswith Fog Lamps | View on Amazon |
| ROSTRA Fits: 2.4L L4 | 640502 | 🇺🇸 US | with Fog Lightswithout Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | WP464 | 🇺🇸 US | To 4/07 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | CBS1826 | 🇺🇸 US | with automatic headlights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11443 | 🇺🇸 US | with Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11435 | 🇺🇸 US | without Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11440 | 🇺🇸 US | with Automatic Headlightswith Fog Lights | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KIA Fits: 2.4L L4 | 934102G311 | 🇺🇸 US | with Fog Lampswith Auto Lights | View on Amazon |
This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
13 Turn Signal Switch parts are listed for the 2008 Kia Optima, from STANDARD MOTOR PRODUCTS, KIA, WELLS and 2 other brands. STANDARD MOTOR PRODUCTS CBS1770 carries the "Popular" badge.
Economy: 1 part, from BWD/NIEHOFF. A representative part number is BWD/NIEHOFF S16204.
The Standard Replacement section: 11 options from STANDARD MOTOR PRODUCTS, WELLS, KIA and 1 other brand. STANDARD MOTOR PRODUCTS CBS1770 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 | 740197 | 🇺🇸 US | From 4/2/07 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 | WP468 | 🇺🇸 US | with Speed Sensitive Intermittent Wipers | View on Amazon |
| WELLS Fits: 2.4L L4 | 1S11404 | 🇺🇸 US | To 04/02/2007 | View on Amazon |
This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Wiper / Washer Switch parts for the 2008 Kia Optima come from 3 brands — ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
This group includes ROSTRA 740197, STANDARD MOTOR PRODUCTS WP468 and WELLS 1S11404.
Buying Electrical Switch & Relay Parts for a 2008 Kia Optima
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Every electrical switch & relay 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Brake Light Switch and Oil Pressure Sender / Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2008 Kia Optima?
Our catalog currently lists 128 electrical switch & relay parts for the 2008 Kia Optima across 22 subcategories and 19 brands, covering both the 2.4L L4 and the 2.7L V6. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2008 Kia Optima engines?
Yes. Every electrical switch & relay 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 electrical switch & relay problems on a 2008 Kia Optima?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
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 2008 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 2008 Kia Optima?
First match the engine — each row shows which engine(s) the part fits. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2008 Kia Optima
Electrical Switch & Relay 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.