DENSO # 3324 Iridium LONG LIFE Spark Plugs — SK16R11 —– 4 PCS NEW

⚠️ Fitment Reality Check

• These are 4 plugs → for 4-cylinder engines only

• Designed for coil-on-plug systems (no plug wires)

• Gap is typically pre-set (~0.044”)—don’t mess with it unless you know what you’re doing

• Always match your OEM spec before installing

Genuine 4 pack DENSO 3324 Spark Plug

💎 Why Iridium Long Life Matters

Iridium is significantly stronger and more durable than platinum or copper.

• Ultra-fine iridium tip = stronger, more precise spark

• Better fuel combustion

• Long service life (100k+ miles)

• Improved ignition efficiency under load

Translation: better performance, fewer replacements, less maintenance.

4 pack DENSO 3324 Spark Plug
Genuine DENSO Parts

🚗 Real-World Benefits

Once installed, you’ll notice:

• Faster starts

• Smoother idle

• Better throttle response

• Improved fuel economy

• Long-term reliability

It’s not a horsepower mod—but it does make your engine feel healthier.

Includes original packaging and hardware

🔥 When Should You Replace Them?

Typical replacement interval:

• 80,000–120,000 miles (depending on driving conditions)

Or sooner if you notice:

• Misfires

• Rough idle

• Poor MPG

• Slow starts

Direct replacement auto parts
Confirm vehicle fitment with Amazon Confirmed Fit

💡 Pro Tip (Don’t Overthink It)

• Install with proper torque (don’t overtighten)

• Don’t gap unless absolutely necessary

• Replace all 4 at the same time

• Check ignition coils if you’re already in there

🏁 Bottom Line

The DENSO SK16R11 (3324) Iridium Long Life spark plugs are a premium OEM-style upgrade for Honda and Acura 4-cylinder engines. They deliver long-lasting performance, improved efficiency, and zero drama.

Because the best spark plug is the one you don’t have to think about again for the next 100,000 miles.