Need the best spark plugs for a Chrysler 300 in 2026? Start with the right engine fit, then look at lifespan and smooth starts. Check thread reach and gap before buying, since the wrong spec can cause rough running. From NGK SILZKR7B11 iridium sets to A-Premium, ENA, and OEM-style picks, each option brings a different mix of value and durability.
| A-Premium Ignition Coil Pack with Iridium Spark Plugs |
| Best Complete Kit | Plug Type: Iridium spark plugs | Pack Size: 6 plugs | Thread Size: 12 mm | VIEW LATEST PRICE | Read Our Analysis |
| Ignition Coil Pack and Spark Plugs Set for 3.6L V6 |
| Best Warranty | Plug Type: Iridium spark plugs | Pack Size: 6 plugs | Thread Size: 12 mm | VIEW LATEST PRICE | Read Our Analysis |
| ENA 3.6 V6 Ignition Coil Set of 6 |
| Best for Fitment | Plug Type: Platinum spark plugs | Pack Size: 6 plugs | Thread Size: 12 mm | VIEW LATEST PRICE | Read Our Analysis |
| A-Premium Iridium Platinum Spark Plugs for Jeep & Dodge |
| Best OE Match | Plug Type: Iridium platinum spark plugs | Pack Size: 6 plugs | Thread Size: 14 mm | VIEW LATEST PRICE | Read Our Analysis |
| NGK Spark Plug SILZKR7B11 9723 Pack of 6 |
| Trusted OEM Pick | Plug Type: Iridium spark plugs | Pack Size: 6 plugs | Thread Size: 5.375 mm | VIEW LATEST PRICE | Read Our Analysis |
| ENA 6-Pack Iridium Spark Plugs for BMW Dodge Chrysler |
| Best Premium Pack | Plug Type: Iridium spark plugs | Pack Size: 6 plugs | Thread Size: 12 mm | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
A-Premium Ignition Coil Pack with Iridium Spark Plugs
Need a complete ignition refresh for your Chrysler 300? Choose A-Premium’s ignition coil pack with iridium spark plugs.
You get a set of 6 plugs plus coils that bolt onto the valve cover, so installation stays straightforward. Fitment covers 2011 to 2023 Chrysler 300 V6 3.6L, along with many Dodge, Jeep, Ram, and VW 3.6L models. Key specs: 2 blade terminals, 0.62 ohm primary resistance, 8.7 kOhm secondary resistance, and 15 to 20 N·m torque. The iridium plugs use a 0.7 to 0.8 gap and 12 mm threads. Nice, right?
- Plug Type:Iridium spark plugs
- Pack Size:6 plugs
- Thread Size:12 mm
- Gap Size:0.7–0.8 in
- Vehicle Fit:Chrysler/Dodge/Jeep/Ram/VW 3.6L-3.2L
- Warranty:1 year
- Additional Feature:Bolt-on valve cover
- Additional Feature:0.62Ω primary resistance
- Additional Feature:15–20 N·m torque
Ignition Coil Pack and Spark Plugs Set for 3.6L V6
Your Chrysler 300’s 3.6L V6 stays sharp with this 6-piece set and its 5-year warranty. You get six Motorevo coil packs plus six iridium plugs, so your ignition system gets a matched refresh, not a half-measure. The bolt-on, vehicle-specific fit means no mods, which is handy whenever you’d rather drive than wrestle parts.
Copper windings, a steel core, and iridium tips help deliver quicker spark energy, smoother acceleration, and reliable starts in heat or cold. Fits 2011 to 2021, plus 2023 models, and even the connector’s male. Simple, clean, done!
- Plug Type:Iridium spark plugs
- Pack Size:6 plugs
- Thread Size:12 mm
- Gap Size:Not specified
- Vehicle Fit:Chrysler/Dodge/Jeep/Ram/VW 3.6L-3.2L
- Warranty:5 years
- Additional Feature:5-year warranty
- Additional Feature:Copper windings construction
- Additional Feature:User guide included
ENA 3.6 V6 Ignition Coil Set of 6
The ENA 3.6 V6 coil set suits Chrysler 300 fitment, especially should you want direct replacement parts. You get 6 yellow coils plus 6 platinum spark plugs, all built for 3.6L V6 engines in 2011 to 2019 Chrysler 300 models.
That plug-and-play layout keeps installation simple, and the 12 V, distributorless electronic design helps deliver steady spark, cut misfires, and support better fuel economy. Specs include a 0.040-inch gap and 26.5 mm reach. Just verify your vehicle details initially; fitment matters more than optimism! Eight words.
- Plug Type:Platinum spark plugs
- Pack Size:6 plugs
- Thread Size:12 mm
- Gap Size:0.040 in
- Vehicle Fit:Chrysler/Dodge/Jeep/Ram/VW 3.6L-3.2L
- Warranty:24 months
- Additional Feature:Yellow coil design
- Additional Feature:24-month warranty
- Additional Feature:Platinum spark plugs
A-Premium Iridium Platinum Spark Plugs for Jeep & Dodge
A-Premium Iridium Platinum Spark Plugs fit Chrysler 300 2.7L V6 engines as a strong OE match. You get a 6-pack with iridium tips, platinum cores, and a 0.052-inch gap, so the setup stays precise.
Specs matter here: 5,000 ohms resistance, 14 mm threads, 25 mm reach, and a 5/8-inch hex. They also suit Charger, Magnum, Sebring, and more.
- Use them for clean, consistent spark.
- Keep the 55 mm insulator height in mind.
And yes, your V6 will appreciate less drama!
- Plug Type:Iridium platinum spark plugs
- Pack Size:6 plugs
- Thread Size:14 mm
- Gap Size:0.052 in
- Vehicle Fit:Chrysler/Dodge/Jeep/VW 2.7L-3.8L
- Warranty:Not specified
- Additional Feature:Iridium-platinum electrode combo
- Additional Feature:5000 ohms resistance
- Additional Feature:55 mm insulator
NGK Spark Plug SILZKR7B11 9723 Pack of 6
Need a reliable six-pack for a Chrysler 300 3.6L? The NGK SILZKR7B11 9723 gives you six iridium plugs, pre-gapped to 0.044 inches, so you can swap in a clean OEM-style setup fast.
You get trivalent plating for easier removal and corrosion resistance, which is handy whenever old plugs have gotten a little too comfortable. It supports smooth starts, steady combustion, and better fuel efficiency. For many Chrysler 300 V6 models, NGK recommends 96,000 to 100,000-mile service intervals. Verify your exact year and engine, because cars do enjoy surprises!
- Plug Type:Iridium spark plugs
- Pack Size:6 plugs
- Thread Size:5.375 mm
- Gap Size:0.044 in
- Vehicle Fit:Chrysler/Dodge/Ram/Jeep/VW 3.6L + Hyundai/Kia
- Warranty:Manufacturer warranty
- Additional Feature:Trivalent metal plating
- Additional Feature:Corrosion-resistant finish
- Additional Feature:OEM trusted brand
ENA 6-Pack Iridium Spark Plugs for BMW Dodge Chrysler
ENA’s 6-pack iridium plugs give your Chrysler 300 a clean, premium pack upgrade.
You get six pre-gapped plugs, so installation’s easier, and the iridium tip helps deliver crisp ignition and steady performance. They fit 3.6L Chrysler 300 models from 2011 to 2023, plus many Dodge, Jeep, Ram, and BMW applications. The gap is 0.043 in, with an M12 thread and 0.47 in hex. Verify your fitment via VIN or garage tool initially. Use the proper socket, torque them correctly, and enjoy the quiet confidence of fresh spark!
- Plug Type:Iridium spark plugs
- Pack Size:6 plugs
- Thread Size:12 mm
- Gap Size:0.043 in
- Vehicle Fit:Chrysler/Dodge/Jeep/Ram/VW 3.6L + Honda/Acura
- Warranty:12 months
- Additional Feature:Pre-gapped convenience
- Additional Feature:0.47-inch hex
- Additional Feature:GTIN included
Factors to Consider When Choosing a Spark Plug for Chrysler 300
Whenever you pick a spark plug for your Chrysler 300, you want to match engine compatibility initially, then check the electrode material, gap specification, heat range, and thread size so everything fits and fires right. A plug with the wrong gap or heat range can leave your engine grumpy, so it’s worth paying attention to the small print. And should you’re comparing options, keep these basics in mind: 1) exact fit for your engine, 2) the right material for durability, and 3) the proper dimensions so installation goes smoothly!
Engine Compatibility
Because the Chrysler 300 has worn different engines over the years, you’ve got to match the spark plug to the exact engine, not just the car name. Check your model year and displacement initially. A 2011 to 2023 3.6L V6 usually needs an M12, 12 mm thread with about 25 to 26.5 mm reach, and the wrong reach can seal badly or nick the electrode.
Then confirm the factory gap, often around 0.043 to 0.044 in, plus the specified resistance and insulator design for coil-on-plug ignition. Don’t ignore the hex size, either, since 5/8 in plugs need the right socket and torque. Tighten it correctly, not “good and snug,” because the aluminum head won’t laugh.
Electrode Material
Electrode material can make a big difference in how your Chrysler 300 starts, idles, and holds up over time. You’ve got three main choices:
- Iridium: best durability, with fine-wire tips that can last 60,000 to 120,000+ miles. It keeps wear low and helps the spark stay focused.
- Platinum: a solid middle ground, usually good for 30,000 to 60,000 miles, with better erosion resistance than copper.
- Copper: great thermal conductivity and strong spark energy, but it wears faster, often every 20,000 to 30,000 miles. Basically, the short-timer.
Harder tips like iridium and platinum hold their preset gap longer, so you’re not replacing plugs as often. Assuming you prefer longer service intervals and smoother ignition, choose a fine-wire iridium or platinum design.
Gap Specification
Even the best iridium or platinum plug won’t do its job provided the gap’s off, so this is where the details start to matter for your Chrysler 300. Check your service manual or dealer data first: many 3.6L V6 OE plugs call for about 0.044 in, while some iridium designs sit closer to 0.040 to 0.043 in. Use a feeler gauge or round-gap tool, and set each plug within the OEM range, because too wide or too tight can bring misfires or weak combustion.
- Verify the gap before installation.
- Adjust gently, especially with fine-wire iridium tips.
- Torque the plug to spec after seating it, so you don’t crush the electrode and change the gap.
Tiny numbers, big difference.
Heat Range
While you’re picking spark plugs for your Chrysler 300, heat range matters just as much as gap, since it tells you how quickly the plug sheds combustion heat. You want the factory service manual’s recommendation for your V6, because the wrong range can foul too cold or trigger pre-ignition provided too hot. Higher numbers run colder and dump heat faster. Lower numbers stay hotter and help burn off carbon.
Use a colder plug whenever you tow, cruise fast, or haul heavy loads; choose a hotter one for short hops, stop-and-go errands, and other low-load misery. Keep these basics in mind:
- Match OEM heat range initially.
- Adjust for workload and climate.
- Install them with the correct torque spec.
That keeps combustion temps in line and your engine happy!
Thread Size
Heat range gets most of the attention, but the plug has to physically fit your Chrysler 300 initially, and that means getting the thread size right. For many 3.6L V6 and similar Chrysler V6 engines, you’ll usually be looking at an M12, or 12 mm, thread diameter. Get that wrong, and you can cross-thread the plug or chew up the cylinder head threads.
Not ideal, unless you enjoy expensive repairs! Check the service manual for both thread diameter and pitch, because metric pitches vary, and torque specs depend on that match. Should your head threads be damaged or modified, fix the threads with inserts or a heli-coil instead of forcing in a different plug. Simple rule: match the spec, then tighten with confidence.
Reach Length
Reach length is one of those details that looks small on paper but matters a lot in your Chrysler 300. You need the plug’s reach, or thread engagement length, to match your engine exactly. Many Chrysler 3.6L V6 setups use a 25 to 26.5 mm reach, and even a millimeter off can upset sealing and combustion chamber clearance.
- Too long: it can touch the piston or valves, which is a bad day.
- Too short: you’ll lose heat transfer, and misfires or blowouts can follow.
- Right length: you get proper electrode placement, cleaner combustion, and better fouling resistance.
Check the factory service manual for the exact spec and torque. Use only the specified reach and thread diameter, because spark plugs like precision, not improvisation!
OEM Cross Reference
When you’re picking a spark plug for your Chrysler 300, the OEM part number is your best starting point, because it ties the plug to the engine’s exact needs instead of just “close enough” guesses. Check the factory manual, then match:
- thread size, usually M12 or 14 mm
- reach and seat type
- hex size, so your socket fits
- electrode material and heat range for your 3.6L V6 or other engine
- gap, often 0.040 to 0.044 in
- OEM-equivalent cross-reference codes for your year and displacement
You also want the thread pitch and insulator length to line up exactly. Miss that, and you invite misfires, valve interference, or worse. A plug that “sort of fits” is still a bad idea!
Service Interval
Usually, the service interval is just as essential as the plug itself, because even a great iridium or platinum spark plug won’t last forever in your Chrysler 300. For many 3.6L V6 models, you can expect about 96,000 to 100,000 miles under normal driving. But suppose you do lots of short trips, idle in traffic, or tow heavy loads, plan closer checks at 60,000 to 80,000 miles.
- Check your owner’s manual initially for the factory interval.
- Follow any shorter severe-service schedule.
- Replace sooner in case you notice misfires, rough idle, poor mpg, or hard starts.
- Whenever you install new plugs, set the gap and torque them to spec. Tiny details, big payoff.
Final Thoughts
Choose the right plug, and your Chrysler 300 will purr with poise, power, and proper pep. Match the thread, reach, gap, and heat range to your engine, then stick with proven picks like NGK, A-Premium, or ENA for smooth starts and steady strength. Keep maintenance clean and timely, because a well-chosen spark plug means fewer misfires, better mileage, and less drama under the hood. Small part, big payoff.
