RAM does not rely on a single spark plug brand across its lineup. The brand varies by engine design and model year, and RAM's diesel lineup uses glow plugs rather than spark plugs. For gasoline RAM engines, common OEM spark plug brands include NGK and Bosch, with Denso and Champion appearing on certain models or markets. Always verify with the specific engine in your vehicle.
In this article, we explain how spark plug brand decisions are made for RAM vehicles, how to identify the correct part for your exact engine, and what to know about gasoline versus diesel engines in RAM's lineup.
RAM gasoline engines and spark plugs
Gasoline RAM engines rely on spark plugs to ignite the air/fuel mixture. The brand used by OEMs can vary by engine family and production year, so there is no single RAM spark plug brand that applies to all models.
- NGK
- Bosch
- Denso
- Champion
The list above reflects common OEM sources and widely available aftermarket options. Exact brand and part numbers depend on your engine type and year; always confirm with your owner’s manual or Mopar parts catalog.
Diesel RAM engines and glow plugs
RAM trucks that use the 6.7L Cummins diesel (RAM 2500/3500) use glow plugs, not spark plugs. Glow plug brands commonly found on diesel engines include Bosch and Denso among others, but the exact part is specific to the engine model and year.
How to determine the exact spark plug brand for your RAM
To get the precise brand and part number for your RAM, use these steps to verify for your vehicle:
- Identify your engine and year from the VIN, build sheet, or door placard.
- Consult the official RAM/Mopar parts catalog or your dealership’s service department for the OEM spark plug part number that matches your engine.
- Cross-check the installed plugs or the service bulletin with the recommended gap and heat range for your engine.
By following these steps, you can ensure you purchase the correct spark plug (or glow plug) brand and part for your RAM model.
Summary
RAM does not use a single spark plug brand across its vehicles. The brand depends on the gasoline engine family and production year, with NGK and Bosch commonly appearing in OEM supply and Denso or Champion also used in some markets. Diesel RAM engines use glow plugs, not spark plugs, and have their own brand considerations. Always verify with your VIN-specific Mopar parts catalog or dealer to confirm the correct part number and brand for your engine.