OE Quality
60-Day Returns

Denso 673-8303 Direct Ignition Coil
Reliable Ignition Coil for Hyundai and Kia Vehicles
The Denso 673-8303 Direct Ignition Coil is designed to deliver consistent 12-volt performance for select Hyundai and Kia models. Engineered to meet OEM specifications, this ignition coil ensures efficient spark delivery for smooth engine operation.
- Direct Ignition Coil with 12-volt rating
- Compatible with Hyundai Optima, Kia Rondo, and Santa Fe models
- Durable black housing for heat and corrosion resistance
- Part number 673-8303 for precise fitment
- Part of Denso's Coil on Plug product line for direct spark plug connection
About the Denso Coil on Plug Product Line
The Coil on Plug product line by Denso is designed to provide direct ignition coil solutions that connect directly to the spark plug, eliminating the need for spark plug wires. This design improves ignition efficiency and reduces potential points of failure. The 673-8303 ignition coil is part of this line, offering reliable voltage delivery and compatibility with specific Hyundai and Kia models.
Product Details and Specifications
This ignition coil operates at 12 volts and features a black exterior casing that withstands engine bay conditions. The direct ignition coil design ensures a secure connection to the spark plug, optimizing ignition timing and engine performance. The Denso 673-8303 is engineered to fit Hyundai Optima, Kia Rondo, and Santa Fe vehicles, providing a direct replacement for worn or faulty ignition coils.
Common Applications and Issues Addressed
- Replaces faulty ignition coils causing engine misfires
- Resolves rough idling and poor acceleration issues
- Eliminates hard starting problems related to ignition failure
- Improves fuel efficiency by ensuring proper spark delivery
- Prevents engine stalling due to inconsistent ignition
Installation Notes and Tips
Installation of the Denso 673-8303 ignition coil requires basic automotive tools and knowledge of ignition systems. Ensure the vehicle is turned off and cooled before beginning. Disconnect the battery to prevent electrical shorts. Remove the old ignition coil carefully, avoiding damage to the spark plug or wiring harness. Install the new coil by aligning it directly onto the spark plug and securing it according to manufacturer torque specifications. Verify all electrical connections are secure before starting the engine.
Quality Assurance and Warranty
Denso ignition coils are manufactured to meet strict quality standards and OEM specifications. The 673-8303 part undergoes rigorous testing to ensure durability and reliable performance under normal operating conditions. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.
| Brand | Denso |
|---|---|
| Part Number | 673-8303 |
| Position | Coil on Plug |
| Color | Black |
| Voltage | 12 |
This part fits 11 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2010 | Kia | Optima | N/A | Coil on Plug |
| 2010 | Kia | Rondo | N/A | Coil on Plug |
| 2009 | Hyundai | Santa Fe | N/A | Coil on Plug |
| 2009 | Kia | Optima | N/A | Coil on Plug |
| 2009 | Kia | Rondo | N/A | Coil on Plug |
| 2008 | Hyundai | Santa Fe | N/A | Coil on Plug |
| 2008 | Kia | Optima | N/A | Coil on Plug |
| 2008 | Kia | Rondo | N/A | Coil on Plug |
| 2007 | Hyundai | Santa Fe | N/A | from 10/30/2006; Coil on Plug |
| 2007 | Kia | Optima | N/A | From 9/11/2006; Coil on Plug |
| 2007 | Kia | Rondo | N/A | Coil on Plug |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.