Chrysler does not rely on one universal spark plug across its lineup; the plug type depends on the engine family and model year, with OE plugs typically supplied by major brands such as NGK or Champion, and others used on select engines.
To understand why the answer varies and how to find the correct plug for a specific vehicle, this article reviews the main factors that influence spark plug choice, lists common OE suppliers Chrysler has used in recent years, and provides practical steps to identify and install the right part for your engine.
Why the plug brand varies by model
Because Chrysler vehicles span multiple engine families and generations, the OEM spark plug is chosen to match the engine’s design, heat range, reach, and electrode configuration. Over the years, Stellantis (the parent company behind Chrysler) has sourced spark plugs from several established manufacturers, and the exact part number is engine-specific rather than universal. This means a plug that fits one Chrysler engine may not be correct for another, even within the same model line.
Common OE spark plug brands used by Chrysler
There isn’t a single plug brand across all Chrysler vehicles; however, several brands have repeatedly appeared as original equipment suppliers in recent years. The following list highlights brands that you’re likely to encounter as OE parts for various Chrysler, Jeep, and Dodge engines.
- NGK
- Champion
- Denso
- Bosch (in some markets or specific engines)
Understanding that these brands appear in OEM supply catalogs helps buyers and technicians verify compatibility when shopping for replacement plugs. The exact part numbers, heat ranges, and electrode design depend on the engine, year, and market.
How to identify the right spark plug for your Chrysler
To ensure you install the correct plug, follow these steps so you can reference the exact OE specification for your vehicle.
- Identify the exact engine code and model year from the vehicle’s information plate or owner’s manual.
- Check the official Stellantis/Chrysler parts catalog or the dealership portal using the VIN to pull the OEM spark plug part number and gap specification.
- If you don’t have direct access to the catalog, inspect the existing plug (if accessible) and note the brand marking and part number stamped on the plug itself, then cross-check with a trusted parts retailer.
- Compare the recommended heat range, thread size, reach, and seating style (projected vs. ground electrode) to ensure compatibility with your cylinder head and ignition system.
- Choose the replacement option (OE-equivalent brand or a recommended aftermarket alternative) and set the proper gap according to the service manual or manufacturer guidance.
Following these steps helps you select a spark plug that matches your engine’s design and maintains performance and reliability.
Practical notes on replacement options
Platinum vs Iridium vs Copper
Most modern Chrysler engines use longer-life iridium or platinum plugs, which offer extended service intervals and consistent performance. Copper plugs are generally less common in newer engines and are typically used in older or simpler designs. Always verify the recommended type for your engine in the official documentation or parts catalog.
Gapping and installation
Some plugs come pre-gapped from the factory, while others require minor adjustments. Always follow the gap specification printed on the packaging or in the service manual. When installing, use the proper torque and seating technique as described in the manual or have a qualified technician perform the service if you’re unsure.
Engine families and spark plug trends (high-level)
Chrysler’s current and recent engine lineup includes a mix of inline-four and V6/V8 configurations across various brands (Chrysler, Jeep, Dodge). Each engine family has its own spark plug specification and recommended replacement interval, so the exact plug you need must be sourced against the engine code and year. Always rely on the official parts catalog or dealership guidance for precision.
Summary
The bottom line is that Chrysler uses more than one spark plug type across its vehicles. There isn't a single answer for the brand as a whole—the right spark plug depends on the specific engine, year, and market. For accurate results, consult the vehicle’s manual, the Stellantis/Chrysler parts catalog (or a dealership), and the VIN to identify the exact OEM plug part number and gap. When in doubt, a trained technician can confirm the correct plug and perform the replacement to spec.