2003 Kia Optima Engine Control Modules (ECM)
Keep Your 2003 Kia Optima in Top Shape with Quality Engine Control Modules (ECM)
Whether you’re repairing or upgrading your Engine Control Modules (ECM), using high-quality parts is key to keeping your 2003 Kia Optima looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Computer Control Relays and Engine Control Module Relays. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 2003 Kia Optima Engine Control Modules (ECM) at Advance Auto Parts is around $30.19, with a range that starts at $24.99 and goes up to $35.99. With 3 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Carquest Multi-Purpose Relay, RAA2609, Carquest Multi-Purpose Relay, RAC1972, and Carquest Multi-Purpose Relay, RAA2631 start at just $24.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Control Modules (ECM), don’t forget to check out other key components like Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 2003 Kia Optima in peak condition, inside and out.
Find Your Specific 2003 Kia Optima Engine Control Modules (ECM)s
Looking for the perfect Engine Control Modules (ECM) for your 2003 Kia Optima? You’re in the right place. Below, you’ll find links to various types of Engine Control Modules (ECM) that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Control Modules (ECM)s, ensuring durability and a precise fit for your Kia Optima. Whether you’re driving a 2003 model or another popular model year like
2001,
2002,
2004,
2005,
2006,
2007,
2008,
2009, and
2010, we’ve got you covered. Purchasing Engine Control Modules (ECM)s from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Control Modules (ECM)s that fit your vehicle.
Essential 2003 Kia Optima Engine Control Modules (ECM)
Carquest Premium – Carquest Multi-Purpose Relay, RAA2609 (Part No.RAA2609)
from
$35.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
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Carquest Premium – Carquest Multi-Purpose Relay, RAA2631 (Part No.RAA2631)
from
$24.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
Carquest Premium – Carquest Multi-Purpose Relay, RAC1972 (Part No.RAC1972)
from
$28.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
Popular 2003 Kia Optima Engine Control Modules (ECM) Categories
Most Popular Computer Control Relays for 2003 Kia Optimas
Enhance your 2003 Kia Optima with one of the 2 Computer Control Relays we have in stock, starting at just $24.99.
Carquest Premium – Carquest Multi-Purpose Relay, RAA2609 (Part No.RAA2609)
from
$35.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
Carquest Premium – Carquest Multi-Purpose Relay, RAA2631 (Part No.RAA2631)
from
$24.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
Best-Selling 2003 Kia Optima Engine Control Module Relay
Upgrade your Optima with our best-selling Engine Control Module Relay.
Carquest Premium – Carquest Multi-Purpose Relay, RAC1972 (Part No.RAC1972)
from
$28.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
FAQs for 2003 Kia Optima Engine Control Modules (ECM)s
What are the best-selling Engine Control Modules (ECM)s for 2003 Kia Optimas?
Out of 3 Engine Control Modules (ECM)s that fit 2003 Kia Optimas, the following parts are the top sellers:
- Carquest Multi-Purpose Relay, RAA2609 (12461373) – $35.99
- Carquest Multi-Purpose Relay, RAC1972 (12473085) – $28.99
- Carquest Multi-Purpose Relay, RAA2631 (12435897) – $24.99
What’s the price range for 2003 Kia Optima Engine Control Modules (ECM)?
The prices of Engine Control Modules (ECM) for the 2003 Kia Optima range from $24.99 up to $35.99 for the most premium parts.
What is the average price of an Engine Control Modules (ECM) for a 2003 Kia Optima?
The average price for Engine Control Modules (ECM)s for the 2003 Kia Optima is $30.19. Keep in mind the variety of part types within our Engine Control Modules (ECM) category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Control Modules (ECM) for other Kia Optima model years?
What are the cheapest Engine Control Modules (ECM) for my 2003 Kia Optima?
The cheapest 2003 Kia Optima Engine Control Modules (ECM) we carry are:
- Carquest Multi-Purpose Relay, RAA2631 (12435897) – $24.99
- Carquest Multi-Purpose Relay, RAC1972 (12473085) – $28.99
- Carquest Multi-Purpose Relay, RAA2609 (12461373) – $35.99
Does Advance Auto Parts sell Engine Control Modules (ECM) for any other 2003 Kia models?
Yes. We stock Engine Control Modules (ECM) for 1 other popular 2003 Kia models. Some of the most popular are 2003 Spectra Engine Control Modules (ECM) and 2003 Rio Engine Control Modules (ECM).
What types of Engine Control Modules (ECM) do you sell for my 2003 Kia Optima?
As of 8/2/26, these are some of the most in-demand types of Engine Control Modules (ECM) for a 2003 Kia Optima:
Can I get help with 2003 Kia Optima Engine Control Modules (ECM) orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Kia Engine Control Modules (ECM) and more.
What is your return policy for Kia Optima Engine Control Modules (ECM)?
Advance Auto Parts keeps returns simple. For new Kia Optima Engine Control Modules (ECM) and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.