Karlyn 728 Spark Plug Wire Set

Brand	Karlyn 728
Boot Type	Oem
Color	Black
Engine	Oem
Product line	Karlyn-STI
Fits	Hyundai and Kia · 18 vehicles

OEM boot type. Direct-fit spark plug wire set with OEM-style boots.

Black finish. Clean, understated look for the ignition system.

Spark plug wire set. Built for reliable spark delivery in the ignition system.

$22.31Free shipping

In stock · usually ships same day before 1pm CST

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Karlyn-STI 728 Spark Plug Wire Set

The Karlyn-STI 728 spark plug wire set is an OEM-style ignition wire and related component for select Hyundai and Kia applications. Built with black OEM boot type and OEM engine specification, it is a direct-fit choice for vehicles that use a mixed ignition setup with direct ignition on two cylinders.

Compatible with 1999-2005 Hyundai Sonata, 2001-2005 Kia Optima, and 2001-2004 Hyundai Santa Fe, this Karlyn spark plug wire set supports accurate ignition routing for the listed applications. The Karlyn-STI 728 is a practical replacement when servicing ignition wire and coil-related components on these vehicles.

Key Features

OEM boot type for factory-style fitment
Black ignition wire set finish
OEM engine specification
Fits select Hyundai Sonata, Kia Optima, and Hyundai Santa Fe applications
Designed for vehicles with 2 leads and direct ignition on the remaining cylinders
Part number 728 for easy identification

Fitment Details

Fits 1999-2005 Hyundai Sonata, N/A; has 2 leads; other 2 cylinders use direct ignition; purchase 2 coils PN[5024] for a complete tune-up; Karlyn-STI.
Fits 2001-2005 Kia Optima, N/A; has 2 leads; other 2 cylinders use direct ignition; purchase 2 coils PN[5024] for a complete tune-up; Karlyn-STI.
Fits 2001-2004 Hyundai Santa Fe, N/A; has 2 leads; other 2 cylinders use direct ignition; purchase 2 coils PN[5024] for a complete tune-up; Karlyn-STI.

What It Helps Address

Misfires caused by worn ignition wires
Hard starting related to degraded spark delivery
Rough idle from inconsistent ignition performance
Loss of engine efficiency from aging wire insulation
Service replacement for ignition tune-up maintenance

Installation Notes

Verify engine configuration before ordering, since the listed vehicles use a mixed ignition layout with direct ignition on two cylinders. Match the wire routing to the original layout and confirm boot seating at each connection point. For a complete tune-up on the listed applications, reference coil part number 5024 where noted in fitment.

Quality Assurance

Karlyn-STI is the product line identified for this ignition wire set, and the OEM boot type and OEM engine specification support factory-style replacement selection for the listed Hyundai and Kia applications.

This part fits 18 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Submodel	Liters	Cylinders	Position	Notes
2005	Hyundai	Sonata	GL	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2005	Hyundai	Sonata	VE	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2005	Kia	Optima	—	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2004	Hyundai	Santa Fe	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2004	Hyundai	Sonata	GL	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2004	Hyundai	Sonata	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2004	Kia	Optima	—	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2003	Hyundai	Santa Fe	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2003	Hyundai	Sonata	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2003	Kia	Optima	—	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2002	Hyundai	Santa Fe	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2002	Hyundai	Sonata	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2002	Kia	Optima	—	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2001	Hyundai	Santa Fe	GL	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2001	Hyundai	Sonata	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2001	Kia	Optima	—	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
2000	Hyundai	Sonata	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
1999	Hyundai	Sonata	Base	2.4L	L4	N/A	Has 2 Leads; Other 2 Cylinders Use Direct Ignition; Purchase 2 Coils PN[5024] For A Complete Tune-Up; Karlyn-STI
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