2022 Ram 1500 Spark Plug Type & Gap

Quick reference

Why the right plug matters

Choosing the correct spark plugs for your 2022 Ram 1500 is crucial for optimal engine performance, fuel efficiency, and longevity. Spark plugs are not a "one-size-fits-all" component; various factors like heat range, electrode material, and gap play a significant role.

Heat Range

The "heat range" of a spark plug refers to its ability to dissipate heat from the combustion chamber. A plug that's too hot (meaning it dissipates heat slowly) can lead to pre-ignition and engine knocking, potentially damaging engine components. Conversely, a plug that's too cold (dissipates heat too quickly) can lead to fouling, where carbon deposits build up on the electrode, causing misfires. Your Ram's engine is designed for a specific heat range, and using anything outside of that can cause problems.

Electrode Metal (Iridium vs. Platinum vs. Copper)

• Iridium: Most modern vehicles, including many 2022 Ram 1500 engines, come equipped with iridium spark plugs from the factory. Iridium is an extremely durable metal, allowing for very fine electrodes that produce a strong, focused spark. This leads to better fuel efficiency, consistent performance, and significantly longer service intervals (typically 100,000 miles or more).
• Platinum: Platinum plugs are also long-lasting, though not as durable as iridium. They offer good performance and are often found in older or mid-range vehicles. Their lifespan is generally around 60,000-80,000 miles.
• Copper: Copper spark plugs have excellent conductivity but are much softer, leading to faster wear of the electrode. While they produce a strong spark, their lifespan is considerably shorter (around 20,000-30,000 miles). They are typically used in older vehicles or high-performance applications where frequent changes are acceptable.

For your 2022 Ram 1500, stick with iridium plugs as recommended by the manufacturer to ensure you meet the stated service intervals and maintain peak engine performance.

How to gap a spark plug

While many modern iridium spark plugs come pre-gapped from the factory, it's always a good idea to double-check the gap before installation, especially with aftermarket options. Even a slightly incorrect gap can affect spark quality and engine performance.

1. Obtain a spark plug gap gauge: You'll need a wire-type spark plug gap tool, not a disc-style one, to accurately measure iridium plugs without damaging the delicate electrode.
2. Measure the gap: Carefully slide the correct thickness wire from your gauge between the center and ground electrodes. There should be a slight drag.
3. Adjust if necessary: If the gap is too small, gently bend the ground electrode outwards with the notching tool on the gauge. If it's too wide, carefully tap the ground electrode on a hard, non-abrasive surface to close the gap slightly. Never PULL or BEND the center electrode for adjustment, as this can damage the plug.

Replacement procedure tips

Replacing spark plugs on your 2022 Ram 1500 can be a straightforward DIY task if you're comfortable with basic automotive maintenance. Both the 3.6L Pentastar V6 and 5.7L Hemi V8 engines utilize a coil-on-plug (COP) ignition system, meaning each spark plug has its own ignition coil directly above it.

1. Safety First: Disconnect the negative battery terminal before starting any work to prevent accidental electrical shocks.
2. Access: On the 3.6L V6, you'll need to remove the engine cover and possibly some intake components to access all the plugs. On the 5.7L Hemi, the plugs are generally more accessible, though some may require reaching around existing components.
3. Coil-on-Plug Removal: Carefully disconnect the electrical connector from each ignition coil. Then, gently twist and pull upwards on the coil to remove it. Avoid yanking on the wires.
4. Cleaning: Before removing the old spark plugs, use compressed air to blow any debris around the plug wells. This prevents dirt from falling into the combustion chambers when the old plugs are removed.
5. Anti-Seize Debate: There's an ongoing debate about using anti-seize on spark plug threads. For most modern spark plugs with nickel-plated shells, manufacturers like NGK and Denso generally recommend against using anti-seize, as it can affect the torque readings, leading to over-tightening and potential plug or cylinder head damage. Follow the manufacturer's recommendation for the specific spark plugs you are installing. If you do use it, apply a very thin coat and reduce the torque value by approximately 10-20%.
6. Dielectric Grease on Boots: Apply a small amount of dielectric grease inside the spark plug boots (the part that connects to the top of the spark plug). This helps seal out moisture, prevents corrosion, and makes future removal easier.
7. Torque: Always use a torque wrench to tighten the new spark plugs to the manufacturer's specifications. Over-tightening can damage the plug or cylinder head, while under-tightening can lead to blown-out plugs or misfires.

Known issues

Fortunately, the 2022 Ram 1500 engines (3.6L Pentastar V6 and 5.7L Hemi V8) do not have any widespread, notoriously problematic spark plug-related issues like the Ford 3-valve 2-piece plug breakage. Adhering to the recommended service intervals and using the correct spark plugs should provide trouble-free operation.

Need plugs replaced? Find a shop on Repairius.