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2003 Kia Optima

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 2003 Kia Optima

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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Limited time!

NVX XIV2025

0.82 ft (0.25 meter) 2-Channel V-Series RCA Audio Interconnect Cable

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0.82 ft (0.25 meter) 2-Channel V-Series RCA Audio Interconnect Cable

• Shielded noise-rejecting Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Molded ends equipped with colored channel identifiers

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14
List price $9.99
-10% $8.99

In stock

• Shielded noise-rejecting Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Molded ends equipped with colored channel identifiers

Belva BBIC65

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable (CCA)

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5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable (CCA)

• 5 Meters
• 6 Channel RCA
• Audio Interconnect Cable
• 16.4 Foot Length

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10
List price $29.99
-67% $9.99

In stock

Only 3 Left!

• 5 Meters
• 6 Channel RCA
• Audio Interconnect Cable
• 16.4 Foot Length

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Stinger SI423

3 ft. of 2-Channel 4000 Series RCA Interconnect Cable

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3 ft. of 2-Channel 4000 Series RCA Interconnect Cable

• 2-Channel 4000 Series RCA Interconnect Cable
• 3 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Clear Protective Jacket
• Compact Connector Design
• Split-Tip Connector

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4
List price $19.00
-32% $12.99

In stock

• 2-Channel 4000 Series RCA Interconnect Cable
• 3 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Clear Protective Jacket
• Compact Connector Design
• Split-Tip Connector

Limited time!

NVX XIX23

9.84 ft (3 meter) 2-Channel X-Series RCA Audio Interconnect Cable

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9.84 ft (3 meter) 2-Channel X-Series RCA Audio Interconnect Cable

• Shielded noise-rejecting double Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Precision Machined “Locking” ends with colored channel identifiers
• Black nylon protective jacket minimizes friction and electromagnetic interference

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15
List price $24.99
-32% $16.99

In stock

• Shielded noise-rejecting double Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Precision Machined “Locking” ends with colored channel identifiers
• Black nylon protective jacket minimizes friction and electromagnetic interference

Stinger SI82YF

2-Channel 8000 Series Audiophile Grade RCA Y-Adapter Cable

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2-Channel 8000 Series Audiophile Grade RCA Y-Adapter Cable

• 2-Channel 8000 Series RCA Y-Adapter Cable
• Stinger Audiophile Grade
• Double Twisted Pair Construction
• Black Protective Jacket
• Triple Braided Shielding
• Locking Split-Tip Connectors
• 2 Females to 1 Male

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4
List price $59.00
-54% $26.99

In stock

• 2-Channel 8000 Series RCA Y-Adapter Cable
• Stinger Audiophile Grade
• Double Twisted Pair Construction
• Black Protective Jacket
• Triple Braided Shielding
• Locking Split-Tip Connectors
• 2 Females to 1 Male

JL Audio XE-BLKAIC2-3

3 Ft. 2-Channel Premium Audio RCA Interconnect Cable (Black)

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3 Ft. 2-Channel Premium Audio RCA Interconnect Cable (Black)

• 3 Ft. 2-Channel Premium Audio RCA Interconnect Cable
• Pure OFC copper conductors and polyethylene dielectrics
• Twisted-pair wire construction to reject noise
• Braided black outer jacket for protection
• Cable Length: 3 feet / 0.91 meter

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2
$34.99

In stock

Only 2 Left!

• 3 Ft. 2-Channel Premium Audio RCA Interconnect Cable
• Pure OFC copper conductors and polyethylene dielectrics
• Twisted-pair wire construction to reject noise
• Braided black outer jacket for protection
• Cable Length: 3 feet / 0.91 meter

Stinger SI626

6 Ft 2-Channel 6000 Series Audiophile Grade RCA Interconnect Cable

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6 Ft 2-Channel 6000 Series Audiophile Grade RCA Interconnect Cable

• 2-Channel 6000 Series RCA Interconnect Cable
• 6 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Blue Protective Jacket
• Mylar Shielding
• Split-Tip Connector
• Molded Strain Reliefs

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8
List price $39.00
-49% $19.99

In stock

• 2-Channel 6000 Series RCA Interconnect Cable
• 6 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Blue Protective Jacket
• Mylar Shielding
• Split-Tip Connector
• Molded Strain Reliefs

JL Audio XMD-WHTAIC2-25 25 ft 2-Channel RCA Cable

25 ft. (7.62 m) White 2-Channel Marine Series RCA Audio Interconnect Cable

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25 ft. (7.62 m) White 2-Channel Marine Series RCA Audio Interconnect Cable

• 25 Ft (7.62 m) Marine Audio 2-channel Interconnect Cable
• Molded Connectors
• 100% Oxygen-Free Copper
• Nickel-Plated, Brass Contacts

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1
$54.99

In stock

Only 3 Left!

• 25 Ft (7.62 m) Marine Audio 2-channel Interconnect Cable
• Molded Connectors
• 100% Oxygen-Free Copper
• Nickel-Plated, Brass Contacts

Stinger SI9217

17 ft 2-Channel 9000 Series Premium RCA Audio Interconnect Cable

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17 ft 2-Channel 9000 Series Premium RCA Audio Interconnect Cable

• Pure silver conductors for full midrange & crystal clear highs
• 5-layer signal protection to keep music in and noise out
• Rhodium plated machined copper RCA ends
• Ultra OFC long grain copper conductors

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3
List price $329.00
-21% $259.00

In stock

• Pure silver conductors for full midrange & crystal clear highs
• 5-layer signal protection to keep music in and noise out
• Rhodium plated machined copper RCA ends
• Ultra OFC long grain copper conductors

Stinger SI6417

4-channel Shielded Directional Interconnect 17ft/5.2m

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4-channel Shielded Directional Interconnect 17ft/5.2m

• 17 Ft 6000 Series 4-Channel Stereo RCA Interconnect Cable
• Continuous Connection Construction (C3 Tech)
• Machined Metal RCA Ends
• Oversized OFC Conductors
• Twisted Pair Construction
• Color: Blue

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List price $139.00
-55% $62.99

In stock

• 17 Ft 6000 Series 4-Channel Stereo RCA Interconnect Cable
• Continuous Connection Construction (C3 Tech)
• Machined Metal RCA Ends
• Oversized OFC Conductors
• Twisted Pair Construction
• Color: Blue

JL Audio XMD-WHTAIC2-1.5 White 2-Channel RCA Cable

1.5 ft (0.46 m) Two-Channel Marine / Motor-Sports / Car -Audio RCA Audio Interconnect Cable

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1.5 ft (0.46 m) Two-Channel Marine / Motor-Sports / Car -Audio RCA Audio Interconnect Cable

• Flexible white protective jacket
• Twisted-Pair Construction to Reject Noise
• Pure OFC Copper Conductors with Polyethylene Dielectrics
• Molded Connector Bodies
• Machined Brass Connector Elements

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5
$24.99

In stock

• Flexible white protective jacket
• Twisted-Pair Construction to Reject Noise
• Pure OFC Copper Conductors with Polyethylene Dielectrics
• Molded Connector Bodies
• Machined Brass Connector Elements

Stinger SI6412

12 Ft 6000 Series 4 Ch Shielded Directional Twisted RCA

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12 Ft 6000 Series 4 Ch Shielded Directional Twisted RCA

• Oversized OFC conductors provide excellent sound quality
• Continuous connection construction (C3 Tech) provides unmatched signal transfer
• Mylar shielding for increased noise rejection
• Split-tip machined metal connector allows better signal transfer
• Twisted pair winding patterns improve clarity and broaden dynamic range
•Compact connector design for easy installation

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1
List price $109.00
-50% $54.99

In stock

• Oversized OFC conductors provide excellent sound quality
• Continuous connection construction (C3 Tech) provides unmatched signal transfer
• Mylar shielding for increased noise rejection
• Split-tip machined metal connector allows better signal transfer
• Twisted pair winding patterns improve clarity and broaden dynamic range
•Compact connector design for easy installation

Stinger SI42YM

2-Channel 4000 Series RCA Y-Adapter Cable (2 Male to 1 Female)

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2-Channel 4000 Series RCA Y-Adapter Cable (2 Male to 1 Female)

• 2-Channel 4000 Series RCA Y-Adapter Cable
• 2 Male to 1 Female
• Stinger Audiophile Grade
• Twisted Pair Construction
• Clear Protective Jacket
• Compact Connector Design
• Split-Tip Connector

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2
List price $19.00
-32% $12.99

In stock

• 2-Channel 4000 Series RCA Y-Adapter Cable
• 2 Male to 1 Female
• Stinger Audiophile Grade
• Twisted Pair Construction
• Clear Protective Jacket
• Compact Connector Design
• Split-Tip Connector

iDataLink Maestro ACC-RCA1 Amplifier Interface

RCA Adapter Harness and Data Extension Cable

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RCA Adapter Harness and Data Extension Cable

• Adapter for AR or DSP harness to RCA
• Includes 16 ft. cable for remote installation of the amplifier
• Includes 11" RCA adapter harness

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List price $43.99
-20% $34.99

In stock

• Adapter for AR or DSP harness to RCA
• Includes 16 ft. cable for remote installation of the amplifier
• Includes 11" RCA adapter harness

Stinger 2-Channel RCAs (SI123)

3 Ft 1000 Series 2-Channel Audiophile Grade RCA Stereo Interconnect Cable

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3 Ft 1000 Series 2-Channel Audiophile Grade RCA Stereo Interconnect Cable

1000 Series 2-Channel RCA Stereo Interconnect Cable • Audiophile Grade Performance • Compact Molded Ends • Heavy Gauge Conductors • Molded Strain Reliefs • ShocKrome Ends • Cable Length: 3 Feet

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List price $9.00
-33% $5.99

In stock

1000 Series 2-Channel RCA Stereo Interconnect Cable • Audiophile Grade Performance • Compact Molded Ends • Heavy Gauge Conductors • Molded Strain Reliefs • ShocKrome Ends • Cable Length: 3 Feet

Stinger SI426

6 ft. of 2-Channel 4000 Series RCA Interconnect Cable

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6 ft. of 2-Channel 4000 Series RCA Interconnect Cable

• 2-Channel 4000 Series RCA Interconnect Cable
• 6 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Clear Protective Jacket
• Compact Connector Design
• Split-Tip Connector

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11
List price $29.00
-48% $14.99

In stock

• 2-Channel 4000 Series RCA Interconnect Cable
• 6 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Clear Protective Jacket
• Compact Connector Design
• Split-Tip Connector

Belva BBIC45

5m (16.40 ft) 4-Channel RCA Audio Interconnect Cable (CCA)

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5m (16.40 ft) 4-Channel RCA Audio Interconnect Cable (CCA)

• 5 Meters
• 4 Channel RCA
• Audio Interconnect Cable
• 16.4 Foot Length

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3
List price $24.99
-64% $8.99

In stock

Only 2 Left!

• 5 Meters
• 4 Channel RCA
• Audio Interconnect Cable
• 16.4 Foot Length

NVX XIN2F

1 Male to 2 Female Y-Adapter N-Series RCA Audio Interconnect Cables (2-pack)

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1 Male to 2 Female Y-Adapter N-Series RCA Audio Interconnect Cables (2-pack)

• Shielded noise-rejecting coaxial construction
• Heavy gauge OFC conductors ensure superior sound quality
• Silver-Plated ends offer high-quality performance
• Molded ends equipped with colored channel identifiers

2+ offers available
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List price $9.99
-60% $3.99

In stock

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Available Offers (2) for NVX XIN2F
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Prime Time! Save 10% at Checkout!
List price $9.99
-60% $3.99
$3.59 with coupon | Price details
2026-06-28 23:59:00
Purchase $400 or More of NVX and Save 15%!
2026-07-27 11:08:20

• Shielded noise-rejecting coaxial construction
• Heavy gauge OFC conductors ensure superior sound quality
• Silver-Plated ends offer high-quality performance
• Molded ends equipped with colored channel identifiers

JL Audio XD-AICS-1F4F

4-Way RCA Audio Interconnect Splitter

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4-Way RCA Audio Interconnect Splitter

• 4-Way RCA Audio Interconnect Splitter
• Designed to split audio output connections to multiple devices

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$24.99

In stock

• 4-Way RCA Audio Interconnect Splitter
• Designed to split audio output connections to multiple devices

Stinger SI826

6 Ft 2-Channel 8000 Series Audiophile Grade RCA Interconnect Cable

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6 Ft 2-Channel 8000 Series Audiophile Grade RCA Interconnect Cable

• 2-Channel 8000 Series RCA Interconnect Cable
• 6 ft. Cable Length
• Stinger Audiophile Grade
• Double Twisted Pair Construction
• Black Protective Jacket
• Triple Braided Shielding
• Locking Split-Tip Connectors
• Molded Strain Reliefs

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7
List price $89.00
-26% $65.99

In stock

• 2-Channel 8000 Series RCA Interconnect Cable
• 6 ft. Cable Length
• Stinger Audiophile Grade
• Double Twisted Pair Construction
• Black Protective Jacket
• Triple Braided Shielding
• Locking Split-Tip Connectors
• Molded Strain Reliefs

NVX - Worth the Envy - Direct to Consumer Car Audio

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    FAQ for Universal-Fit Audio & Electronics in 2003 Optima

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2003 Kia Optima?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your Optima.

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