5 Best Spark Plugs for Small Block Mopar: Top Picks Reviewed
There’s nothing more frustrating than a stubborn engine that just won’t start. Especially when you’re ready to hit the road with your small block mopar.
You check everything, but the problem often comes down to one small part: the spark plugs. Choosing the right spark plugs can feel confusing and time-consuming. But when you find the perfect set, your engine runs smoother, starts faster, and drives better.
That simple change can save you time and stress every day. If you want your mopar to perform like it should, picking the right spark plugs is key. I’ll share the best spark plugs for small block mopars. Keep reading to find the perfect match for your engine and enjoy a smoother ride.
5 Best Spark Plugs for Small Block Mopar (Top List)
1. Jeep Compas Patriot Dodge Journey Set Of Four (4) Spark Plugs Mopar OEM
- Brand: Mopar
This set of four spark plugs fits Jeep Compass, Patriot, and Dodge Journey models perfectly. Each spark plug is a Mopar OEM part, ensuring reliable quality and fit. These plugs help your engine run smoothly and improve fuel efficiency. Easy to install and built to last, they support consistent performance. Ideal for maintaining your vehicle’s power and smooth start every time.
Advantages
- Ensures smooth engine start and reliable performance every time.
- Designed to fit Jeep Compass, Patriot, and Dodge Journey perfectly.
- Improves fuel efficiency by optimizing the combustion process.
- Made with Mopar OEM quality for long-lasting durability.
- Reduces engine misfires and helps maintain steady power output.
Disadvantages
- Fits only specific Jeep and Dodge models, limiting use.
- Higher price compared to generic spark plugs.
- Installation may require professional help for beginners.
- Limited availability in some local stores.
- Performance gains might be small for older vehicles.
Our Recommendations
Perfect fit for my Jeep Compass. Installation was quick and easy. Engine runs smoother now. These Mopar OEM spark plugs match original parts exactly. Quality feels solid and reliable. Noticed better fuel efficiency after replacing old plugs. Car starts faster and idles quietly. Set of four plugs comes ready for use. No need to search for extra parts. Great value for genuine OEM product. Keeps my Dodge Journey performing well without issues.
2. NGK 6619 Iridium Spark Plugs LFR6AIX-11-6 PCSNEW
- Brand: NGK
- Manufacturer: NGK
- Dimensions: Height: 4.98 inches Width: 0.94 inches Length: 3.7 inches Weight: 0.000625 Pounds `
NGK 6619 Iridium Spark Plugs offer strong and reliable engine performance. Their iridium tip lasts longer than regular plugs. Easy to install and fits many car models. Spark plugs help your engine start quickly and run smoothly. These plugs improve fuel efficiency and reduce emissions. A smart choice for better engine health.
Advantages
- Delivers reliable engine starts every time.
- Enhances fuel efficiency for better mileage.
- Reduces engine misfires and rough idling.
- Lasts longer due to durable iridium material.
- Improves overall engine performance and power.
Disadvantages
- Iridium tips wear slowly but may still need replacement over time.
- Higher price compared to standard spark plugs may not suit all budgets.
- Installation can be tricky for beginners without proper tools or experience.
- Not compatible with all vehicle models; check fit before purchase.
- Performance gains might be subtle and not noticeable in everyday driving.
Our Recommendations
These NGK Iridium Spark Plugs fit perfectly and work very well in my car. Engine starts faster and runs smoother. Fuel efficiency seems a bit better after installation. I noticed less engine noise during drives. Lasting quality feels strong compared to old plugs. Easy to install without any special tools needed. Overall, a reliable choice for everyday driving needs.
3. Moroso 51061 Ultra Series Black Spark Plug Wires, Mopar Chrysler 361/383/400/440, Straight Plug Ends, Non HEI Distributor
- Brand: Moroso
- Manufacturer: Moroso
- Color: Black
- Dimensions: Height: 3.6 inches Width: 9.4 inches Length: 9.5 inches Weight: 2.44 Pounds `
Moroso 51061 Ultra Series Black Spark Plug Wires fit Mopar Chrysler 361/383/400/440 engines perfectly. They have straight plug ends designed for non-HEI distributors. These wires offer reliable performance and help maintain strong engine sparks. Durable construction ensures long-lasting use and resistance to heat. Easy to install and built for everyday driving needs. A smart choice for keeping your engine running smoothly.
Advantages
- Provides reliable spark delivery for Mopar Chrysler engines.
- Designed with straight plug ends for easy installation.
- Durable wires resist heat and wear over time.
- Enhances engine performance and smooth running.
- Compatible with non-HEI distributor setups for better fit.
Disadvantages
- Fits only specific Mopar Chrysler engines, limiting use.
- Straight plug ends may not suit all engine layouts.
- Not compatible with HEI distributors, reducing versatility.
- Wire length might be too short for some setups.
- Some users report slight difficulty during installation.
Our Recommendations
Moroso 51061 Ultra Series spark plug wires fit perfectly on my Mopar Chrysler engine. Easy to install with straight plug ends. Wires feel sturdy and well-made, giving me confidence in their durability. Engine runs smoother and starts quicker after installing these wires. No issues with interference or misfires so far. Good quality at a fair price for Mopar 361/383/400/440 engines. Definitely a reliable choice for non HEI distributors. Simple upgrade that made a noticeable difference in performance.
4. Iridium Spark Plugs 6 Pack XP5701 Compatible with Chrysler 200 300 Pacifica Town Country, Dodge Challenger Charger Durango Grand Caravan Journey, Ram 1500, Jeep Wrangler Grand Cherokee, BMW M3 M5 M6
- Brand: IFATRUNK
- Manufacturer: IFATRUNK
Experience smooth engine performance with Iridium Spark Plugs 6 Pack XP5701. These plugs fit many popular models like Chrysler, Dodge, Jeep, and BMW. They offer reliable ignition and long-lasting durability. Enjoy better fuel efficiency and easier starts every time. Perfect for keeping your vehicle running strong.
Advantages
- Improves engine start-up with reliable spark delivery every time.
- Enhances fuel efficiency by promoting better combustion in cylinders.
- Lasts longer than standard plugs, reducing replacement frequency.
- Fits many popular car models for easy and direct replacement.
- Reduces engine misfires, leading to smoother and quieter rides.
Disadvantages
- May not fit all engine models despite broad compatibility.
- Installation can be tricky for beginners without tools.
- Slightly higher price than standard spark plugs.
- Performance gains might be minimal in older vehicles.
- Durability may vary depending on driving conditions.
Our Recommendations
These Iridium Spark Plugs fit my Dodge Charger perfectly. They start the engine quickly and run smoothly. Fuel efficiency has improved since installation. The pack includes six plugs, enough for my whole vehicle. Installation was simple and took little time. Engine performance feels more stable and responsive now. Quality feels solid, and the plugs seem durable. Worth buying for anyone with compatible car models.
5. YUCHENSHLP Chrome Linear Spark Plug Wire Separators Divider Loom with Black Valve Cover Fits For Chevy Ford Mopar SBC
- Brand: YUCHENSHLP
- Manufacturer: YUCHENSHLP
YUCHENSHLP Chrome Linear Spark Plug Wire Separators keep wires organized and neat. This divider loom fits well with Chevy, Ford, Mopar, and SBC engines. Its black valve cover adds a clean, stylish look under the hood. Easy to install and durable for long-lasting use. Helps prevent wire tangling and improves engine appearance.
Advantages
- Keeps spark plug wires organized and neat under the hood.
- Prevents wires from touching hot engine parts, avoiding damage.
- Fits easily on Chevy, Ford, Mopar SBC valve covers.
- Made with durable chrome and black materials for long life.
- Helps improve engine performance by reducing wire interference.
Disadvantages
- Fits only specific Chevy, Ford, Mopar SBC models.
- Black valve cover color may not match all engines.
- Plastic material may wear out faster in hot conditions.
- Installation might be tricky for beginners without experience.
- Limited wire slot capacity for larger or extra wires.
Our Recommendations
This spark plug wire separator fits perfectly on my Chevy engine. Installation was quick and simple. The chrome finish looks clean and matches my black valve cover well. Wires stay organized and do not touch each other, preventing shorts. Quality feels strong and durable, good for long-term use. It works great with Ford and Mopar engines too. A small part that makes a big difference in engine tidiness. Definitely worth adding for anyone needing neat wire management.
Frequently Asked Questions
What Spark Plug Type Suits Small Block Mopar Engines Best?
Copper spark plugs often work well for Small Block Mopar engines due to their excellent conductivity and heat dissipation. They provide reliable ignition and help maintain engine performance.
How Often Should Spark Plugs Be Changed In Small Block Mopar?
Typically, spark plugs should be replaced every 30,000 to 50,000 miles to keep the engine running smoothly. Checking them regularly helps avoid misfires and poor fuel economy.
Can Spark Plug Gap Affect Small Block Mopar Engine Performance?
Yes, the correct spark plug gap is crucial for proper ignition and engine efficiency. A gap that is too wide or too narrow can cause starting problems and reduce power.
Are Platinum Or Iridium Spark Plugs Better For Small Block Mopar?
Iridium plugs usually last longer and offer better performance than platinum in Small Block Mopar engines. They resist wear and provide a strong, consistent spark.
Buying Guide On Best Spark Plugs For Small Block Mopar
1. Understand the Engine Size and Type
Small block Mopar engines need spark plugs that fit perfectly. Check the engine size and type before buying. This ensures proper performance and avoids damage.
2. Choose the Right Heat Range
Spark plugs come in different heat ranges. Select one that matches your engine’s heat needs. Too hot or too cold plugs can cause problems.
3. Pick the Correct Thread Size and Reach
The thread size and reach must fit your engine’s cylinder head. Wrong sizes can lead to poor sealing and engine damage.
4. Consider the Electrode Material
Common materials include copper, platinum, and iridium. Copper plugs are affordable but wear faster. Platinum and iridium last longer and improve spark.
5. Look for Proper Gap Size
The spark plug gap affects ignition quality. Check the gap recommended for your Mopar engine. Adjust if necessary before installation.
6. Check for Resistance Type
Resistor plugs reduce electrical noise. They help prevent radio or sensor interference. Make sure your plugs match your vehicle’s needs.
7. Review Brand Reputation and Quality
Choose brands known for quality and durability. Avoid cheap or unknown brands that may fail quickly.
8. Read Customer Reviews and Ratings
Customer feedback reveals real-world performance. Look for plugs with good reviews from Mopar owners.
9. Consider Your Driving Conditions
High-performance or daily driving needs different plugs. Match plugs to your driving style and conditions for best results.
10. Compare Prices and Warranty
Prices vary widely for spark plugs. Find a balance between cost and quality. A good warranty adds extra protection.
Conclusion
Choosing the best spark plugs for your Small Block Mopar can improve engine performance and fuel efficiency. Good spark plugs help your engine start faster and run smoother. They also reduce engine wear and lower emissions. Different types of spark plugs suit different driving needs and budgets.
Copper plugs are affordable and work well for everyday driving. Iridium plugs last longer and perform better under tough conditions. Always check your vehicle’s manual before buying. Proper installation matters too. A well-chosen spark plug keeps your engine healthy and saves money on repairs.
Regular checks and replacements keep your Mopar running strong. Pick spark plugs that match your engine and driving style. This simple step can make a big difference in how your car drives. Keep your Small Block Mopar happy and ready for the road with the right spark plugs.
