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Chrysler 300M Ignition Coil Kits

Chrysler 300M Ignition coil kits

Ignition coil kits for the Chrysler 300M start at $119.95 and AutoBuffy stocks 1 options from brands including SKP. An ignition coil kit converts low-voltage battery power into the high-voltage spark each cylinder needs to fire. When coils weaken or fail, combustion breaks down, causing misfires, rough idle, and catalytic converter damage if left unaddressed.

Signs your Chrysler 300M needs new ignition coils

  • Check Engine light on with one or more misfire codes stored (P030X series)
  • Noticeable stumble, hesitation, or shaking at idle that worsens when cold
  • Acceleration feels sluggish or jerky, especially under light throttle load
  • Fuel economy drops noticeably without changes in driving habits
  • Engine runs rough at highway speed or surges inconsistently
  • Hard start or extended cranking before the engine catches, particularly after the vehicle has sat overnight

Which ignition coil kit should you buy for your Chrysler 300M?

The most important decision is whether to replace all coils at once or only the confirmed failed unit. Because coils on the Chrysler 300M age together, replacing the full set as a kit prevents repeat failures within months and usually costs less than multiple single-coil service visits. After that, choose a grade that matches how long you plan to keep the vehicle.

OEM-Equivalent Kit
Best for
Owners who want factory reliability at a lower price
What you get
Meets original specs for resistance, output voltage, and connector fit; direct plug-and-play replacement
OEM Manufacturer / Genuine Kit
Best for
High-mileage vehicles or owners who want exact factory parts
What you get
Sourced from or spec'd by the original supplier; highest confidence in fit and longevity
Performance Upgrade Kit
Best for
Enthusiasts, modified engines, or vehicles with persistent misfire issues
What you get
Higher peak voltage output and improved heat resistance; can improve throttle response on high-demand engines
Economy / Value Kit
Best for
Short-term fix, budget builds, or low-mileage remaining vehicles
What you get
Lower upfront cost; adequate for normal driving but may have shorter service life than OEM-equivalent parts

Ignition coil kits brands we stock for your Chrysler 300M

SKP
1 option · from $119.95

Replacing ignition coils on a Chrysler 300M

Easy⏱ 45 minutes – 1.5 hoursSocket set with extensionTorque wrenchFlathead and Phillips screwdriversDielectric greaseOBD-II scanner (to clear codes after install)

Access the coils by removing any engine covers, then disconnect the electrical connector on each coil before pulling it straight up off the spark plug. Install the new coils one at a time to avoid mixing up plug positions, apply a small amount of dielectric grease to the boot, and snug the retaining bolt to the manufacturer's specification. After installation, clear any stored misfire codes with an OBD-II scanner and run the engine briefly to confirm the codes do not return.

Frequently asked questions

How much does it cost to replace ignition coils on a Chrysler 300M?
Parts alone start at $119.95 for a full kit on the Chrysler 300M. DIY installation adds no labor cost beyond your time. A shop will typically charge one to two hours of labor on top of the parts price. Replacing the full set at once is more economical than returning for individual coils as each one fails.
Can I replace just one ignition coil on my Chrysler 300M instead of the whole kit?
You can replace only the failed coil, and it will stop the immediate misfire. However, if one coil has failed from age or heat stress, the remaining coils are at a similar point in their lifespan. Replacing the full set as a kit eliminates the near-certain repeat visits and keeps all cylinders performing at the same level.
How long do ignition coils last on a Chrysler 300M?
Most ignition coils are designed to last for several years and tens of thousands of miles under normal conditions. Actual lifespan depends on heat exposure, plug gap condition, and oil contamination. Worn spark plugs force coils to work harder and significantly shorten their life, so replacing plugs and coils together is strongly recommended.
Will a bad ignition coil damage the catalytic converter on a Chrysler 300M?
Yes. A misfiring cylinder sends unburned fuel into the exhaust stream, where it ignites inside the catalytic converter. Even a few days of driving with an active misfire can overheat and permanently damage the catalyst. Addressing a coil failure quickly protects the converter, which is a significantly more expensive component to replace.
Should I replace spark plugs at the same time as the ignition coil kit on my Chrysler 300M?
Yes, and this is strongly advised. Worn spark plugs with excessive gap force coils to produce higher voltage on every firing event, which accelerates coil wear and can cause premature failure of new coils. Replacing both at the same time maximizes the service life of the new kit and ensures the ignition system is fully restored.
How do I know which ignition coil kit fits my Chrysler 300M?
Use the year, make, model, engine size, and trim level to confirm fitment. The Chrysler 300M may have different coil designs depending on engine variant or model year, so verifying the exact engine code matters. AutoBuffy's fitment filter narrows the 1 available options to only those confirmed compatible with your specific Chrysler 300M configuration.

Shop ignition coil kits by year for the Chrysler 300M

2004200320022001200019991998

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