In automotive care, the choice of spark plugs can profoundly influence a vehicle’s performance. For those navigating the P71 terrains, the significance is even more pronounced. This iconic vehicle deserves only the best, and the heart of its power – the engine – relies on top-notch spark plugs to ensure optimal combustion. As we journey ahead, we’ll delve into why spark plugs are pivotal, explore critical features to consider, and spotlight some top contenders in the market. Whether you’re an enthusiast or looking to enhance your P71’s performance, this best spark plugs for P71 guide is tailor-made.

No Product Name Image Specialty Price
1 NGK 7090 G-Power Platinum Spark Plugs BKR5EGP Best Value Multi-Pack Check Price
2 NGK Spark Plug, NGK DPR8EA-9, ea, 1 Reliable Single Purchase Check Price
3 Pack of 8 Genuine Motorcraft Spark Plug SP-493 AGSF32PM Best for OEM Replacement Check Price
4 BOSCH Platinum Iridium Spark Plug Best for Longevity Check Price
5 Autolite APP104 Double Platinum Automotive Replacement Spark Plug Best for Balanced Performance Check Price

Remember, the best spark plug for a particular vehicle may also depend on the owner’s specific requirements, driving conditions, and maintenance habits. It’s always a good idea to consult the vehicle’s owner’s manual or a professional mechanic before deciding.

A man holds 4 Spark Plugs for P71 in his palm

1. Importance of the Right Spark Plug

Selecting the correct spark plug for your vehicle is not just a matter of replacing old parts or ensuring compatibility. It’s about enhancing the overall performance, extending the engine’s lifespan, and even conserving fuel. Here’s why the proper spark plug is crucial for your vehicle, especially for specialized models like the P71:

  • Optimal Combustion: The spark plug’s primary function is to ignite the air-fuel mixture in the engine’s combustion chamber. A suitable spark plug ensures this process happens efficiently every single time. Any inefficiency in this process can lead to incomplete combustion, which can cause engine misfires, reduced power, or even damage.
  • Fuel Efficiency: With fuel prices perpetually on the rise, every drop counts. The correct spark plug can significantly enhance your vehicle’s fuel economy. Proper ignition leads to better combustion, which in turn ensures that the fuel is utilized most effectively. Over time, this can translate to substantial savings.
  • Prolonged Engine Life: Inconsistent ignition or misfires, often caused by faulty or unsuitable spark plugs, can be detrimental to the engine. These inconsistencies can lead to wear and tear, reducing the engine’s lifespan. The right spark plug minimizes these issues, ensuring that the engine remains in peak condition for longer.
  • Reduced Emissions: In an era where environmental concerns are paramount, reducing vehicle emissions is not just an ecological responsibility but also, in many places, a legal requirement. Efficient combustion, ensured by the correct spark plug, results in fewer emissions, making your vehicle more environmentally friendly.
  • Consistent Performance: For those who value the driving experience, the right spark plug ensures that the vehicle delivers consistent power and performance. Whether it’s a smooth drive in the city or an adventurous trip off-road, the right spark plug can make all the difference.
  • Cost-Efficient in the Long Run: While it might be tempting to opt for cheaper alternatives or ignore specifications, doing so can lead to frequent replacements, repairs, and decreased efficiency. Investing in the right spark plug might seem like a small detail, but it can lead to significant savings over time, both in terms of repairs and fuel costs.

In conclusion, the right spark plug is a small component with a significant impact. For specialized vehicles like the P71, which are designed for specific roles and conditions, the correct spark plug is not just a recommendation but a necessity. Always prioritize quality and compatibility when making your choice.

A man holds a spark plug for P71in his hands

2. Factors to Consider When Choosing Spark Plugs

For any vehicle owner or someone responsible for its maintenance, understanding the factors that go into selecting the correct spark plug is paramount. A spark plug may seem like a small component. However, its role is indispensable for the efficient functioning of the engine. Here are the crucial factors to consider when choosing spark plugs for your vehicle:


Spark plugs come in a variety of materials like copper, iridium, and platinum. Each has its advantages:

  • Copper: Good for heat transfer but may have a shorter lifespan.
  • Iridium: Durable and offers consistent performance but can be pricier.
  • Platinum: Provides a longer lifespan than copper and aids in reducing engine misfires.

Heat Range

The heat range of a spark plug determines its ability to dissipate heat from the combustion process. It’s essential to choose a heat range appropriate for your engine’s operating conditions. A wrongly chosen heat range can cause poor performance or even engine damage.

Gap Size

The gap between the center and ground electrode of the spark plug is crucial for the ignition of the air-fuel mixture. While many spark plugs come pre-gapped, it’s vital to ensure the gap aligns with the vehicle manufacturer’s specifications.

Thread Length

The thread length must be compatible with your engine. A mismatch can lead to improper combustion or even damage to the engine cylinder head.

Brand & Quality

Not all spark plugs are created equal. It’s beneficial to go with reputable brands known for their quality and durability. While they might come at a premium, the long-term benefits often outweigh the initial cost.


Always refer to the vehicle’s manual or the manufacturer’s recommendation. Using incompatible spark plugs can lead to reduced performance, increased fuel consumption, or even engine damage.

Lifespan & Maintenance

Some spark plugs are designed for extended life, requiring less frequent changes. However, it’s always good practice to inspect spark plugs periodically for signs of wear or deposits.


While it’s essential not to compromise on quality, one should also consider the budget. Sometimes, a mid-range spark plug from a reputable brand might offer a good balance between cost and performance.

Environmental Impact

Some spark plugs are designed to reduce emissions, contributing to a cleaner environment. If being eco-friendly is a priority, look for these specifications.

Performance Needs

If you have a high-performance vehicle or have specific performance requirements, you might need specialized spark plugs that cater to those needs.

In summary, choosing the right spark plug is a blend of understanding your vehicle’s needs, considering the operating conditions, and being aware of the options available in the market. Always prioritize compatibility and quality to ensure the best performance and longevity for your engine.

3. Top Spark Plugs for P71

I. NGK 7090 G-Power Platinum Spark Plugs BKR5EGP – 6 PCSNEW

NGK 7090 G-Power Platinum Spark Plugs BKR5EGP - 6 PCSNEW

The NGK 7090 G-Power Platinum Spark Plugs are the ideal choice for any vehicle that needs reliable and efficient spark plugs. Designed with a trapezoid cut ground electrode, these plugs reduce quenching to ensure your vehicle runs smoothly. They are further equipped with trivalent metal plating, which provides superior anti-corrosion and anti-seizing properties and corrugated ribs to prevent flashover.

The pure alumina silicate ceramic insulator offers superior strength and better heat transfer. With these features, you can trust that your vehicle will get the highest performance from its spark plugs. Invest in a set of NGK 7090 G-Power Platinum Spark Plugs today and enjoy increased power, fuel efficiency, and engine longevity!

II. NGK Spark Plug, NGK DPR8EA-9, ea, 1

NGK Spark Plug, NGK DPR8EA-9, ea, 1

The NGK Spark Plug, NGK DPR8EA-9, ea, 1, is a must-have for any vehicle owner. This high-grade spark plug provides superior reliability and performance and is backed by the quality of NGK. It features a 98% pure copper core that increases heat dissipation for more reliable starts and prevents the spark plug from overheating. Additionally, it includes a high-grade alumina silicate ceramic insulator for superior strength and heat transfer.

Moreover, cold-rolled threads prevent cross-threading and damage to cylinder heads. At the same time, the trivalent plating eliminates the need for anti-seize, and corrugated ribs prevent flashover. This package contains 1 spark plug per package, making it an excellent choice for DIY auto mechanics or professional maintenance jobs. So, if you’re serious about maintaining your vehicle’s performance, look no further than the NGK Spark Plug, NGK DPR8EA-9!

III. Pack of 8 Genuine Motorcraft Spark Plug SP-493 AGSF32PM

Pack of 8 Genuine Motorcraft Spark Plug SP-493 AGSF32PM

Don’t settle for second-best when it comes to your vehicle. Get the genuine, dependable performance you expect with a Pack of 8 Genuine Motorcraft Spark Plug SP-493 AGSF32PM. Designed and engineered to meet strict Ford engineering standards, Motorcraft Spark Plugs provide unmatched performance, reliability and confidence in all domestic and import car and truck makes and sizes.

With a durable construction that resists oxidation and arc erosion, these spark plugs feature multi-rib insulators for maximum protection against misfires, plus service intervals of up to 100,000 miles. In addition, their exact fit for Ford, Lincoln and Mercury vehicles helps prevent false check engine lights from occurring. Give your engine the best – choose genuine Motorcraft spark plugs today!

IV. BOSCH Platinum Iridium Spark Plug

BOSCH Platinum Iridium Spark Plug

BOSCH Platinum Iridium Spark Plugs are built on the highest quality material – platinum, the most precious of all the precious metals. This material is best in terms of electrical and thermal conductivity, and its corrosion-resistant nature makes the spark plug durable and long-lasting. Moreover, it has double platinum spark plugs with laser-welded platinum tips (centre electrode), or the electrode is platinum-tipped (ground electrode).

With these features in mind, you benefit from increased cold starting reliability and engine and catalytic converter protection for your car. Also, they offer rapid attainment of operating temperature and a set electrode gap, which helps ensure smooth engine operation. These plugs are ideal for gas-driven vehicles to ensure optimum performance at all times. Get your hands on Bosch Platinum Iridium Spark Plug SET today!

V. Autolite APP104 Double Platinum Automotive Replacement Spark Plug (1 Pack)

Autolite APP104 Double Platinum Automotive Replacement Spark Plug (1 Pack)

The Autolite APP104 Double Platinum Automotive Replacement Spark Plug is the right choice for maximum performance and improved durability in automotive engines. Designed with a necked-down centre electrode that fires quicker and cleaner with less voltage for easier starts and quicker acceleration, the spark plug also features a full copper core electrode that ensures better performance in all conditions.

Featuring platinum-enhanced high nickel alloy side electrodes that maintain the precise gap and assure virtually no gap erosion, these Autolite spark plugs provide superior heat transfer, longer lifespan and superconductive Yttrium-enhanced ground electrodes. From its high nickel alloy side electrodes that maintain precise gaps to its platinum-to-platinum firing, this Autolite spark plug is everything you need for an OE replacement solution that ensures reliable performance. With over 80 years of experience producing spark plugs, Autolite can be trusted as one of the most reliable brands for your automotive needs.

You can check out our article on ‘Best spark plug for 2 stroke engines: Reviews, Guide‘ if you’re seeking the perfect spark plug for your 2-stroke engine!

A man Installation a Spark Plugs

4. Installation Tips for Spark Plugs

Installing spark plugs might seem straightforward, but doing it correctly is essential to ensure the optimal performance and safety of your vehicle. Here are some tips from the perspective of someone experienced in the automotive field:

  • Safety First: Before starting any installation, make sure your engine is off and has cooled down. This ensures you won’t burn yourself and that the metal components have contracted, making the removal of old spark plugs easier.
  • Gather Necessary Tools: At a minimum, you’ll need a spark plug socket, a socket wrench, a gap gauge, and an anti-seize compound. Depending on your vehicle, you might also require extension bars or swivel joints to access hard-to-reach plugs.
  • Pre-check the Gap: While most modern spark plugs come pre-gapped, it’s always a good practice to check and adjust if necessary, ensuring it align with the vehicle manufacturer’s recommendations.
  • Clean the Area: Before removing the old spark plug, clean the surrounding area with compressed air or a brush. This prevents any debris from falling into the combustion chamber when the plug is removed.
  • Remove Gently: When removing the old spark plug, turn the wrench counter-clockwise slowly. Forceful or rapid removal can damage the threads in the cylinder head.
  • Apply Anti-seize Compound: A tiny amount on the threads of the new spark plug can prevent it from getting stuck or fused with the engine over time. However, be cautious to avoid getting any on the electrodes.
  • Hand-tighten First: Start by screwing the spark plug in by hand to ensure it’s threading correctly and to avoid cross-threading, which can damage the engine’s threads.
  • Tighten to Specification: Once hand-tightened, use your wrench to tighten it further, but not too tight. Over-tightening can strip the threads or crack the spark plug. Always follow the manufacturer’s torque specifications.
  • Reconnect Spark Plug Wires or Coils: Make sure to reconnect the spark plug wires or coils to the corresponding spark plug. Mixing these up can lead to misfires or poor performance.
  • Test Your Work: Before heading out, start your vehicle and listen for any misfires or irregular sounds. It’s better to detect and correct any issues while you’re still stationary.
  • Dispose of Old Spark Plugs Properly: Many localities classify used spark plugs as hazardous waste. Ensure you’re disposing of them in an environmentally friendly manner, adhering to local regulations.

In conclusion, while installing spark plugs is a task many can undertake, always approach it with care, patience, and the proper knowledge. If ever in doubt, consulting a professional or referring to your vehicle’s manual is advised. Proper installation ensures your vehicle runs smoothly and safely.

5. Maintenance Tips for Spark Plugs

Maintaining your spark plugs is crucial for the optimal performance of your vehicle. These seemingly small components can have a huge impact on fuel efficiency, emissions, and the overall health of your engine. Here are some expert maintenance tips to ensure your spark plugs remain in top condition:

  • Regular Inspections: Periodically inspect your spark plugs for signs of wear, corrosion, or deposits. Look for any discoloration, cracks, or other visible damages that suggest it’s time for a replacement.
  • Mind the Gap: Even if a spark plug is functioning well, the gap between its electrodes can widen over time due to regular wear and tear. Use a gap tool to measure and adjust the gap as per the manufacturer’s specifications.
  • Keep it Clean: Use a wire brush and a specialized spark plug cleaner to remove any deposits. Clean plugs ensure optimal combustion and reduce the risk of misfires.
  • Avoid over-tightening: Over-tightening during installation can damage the spark plug and affect its performance. Always use a torque wrench and adhere to the manufacturer’s torque specifications.
  • Anti-seize is Your Friend: When installing or after cleaning, a tiny amount of anti-seize compound on the threads can help with future removals. Just ensure none gets on the electrodes.
  • Rotate Regularly: In multi-spark plug engines, rotating the spark plugs can promote even wear and extend their lifespan.
  • Check the Wires, Too: The condition of your spark plug wires or coils is equally important. Look for cracks, burns, or other damages. If the wires are in poor condition, even new spark plugs won’t function optimally.
  • Follow the Manufacturer’s Schedule: Your vehicle’s manual will provide a recommended maintenance schedule for spark plugs. It’s best to follow this schedule, even if the plugs are in good condition.
  • Be Wary of Fuel Additives: Some fuel additives can cause deposits on spark plugs. If you’re using additives, it’s a good idea to check your plugs more frequently.
  • Trust Your Vehicle: If you notice changes in your vehicle’s performance, such as rough idling, difficulty starting, or increased fuel consumption, it might be time to check the spark plugs.
  • When in Doubt, Consult a Pro: If you’re unsure about the condition of your spark plugs or the right maintenance steps, it’s always best to consult with a professional mechanic or refer to your vehicle’s manual.

In conclusion, consistent and mindful maintenance of your spark plugs can lead to better fuel efficiency, reduced emissions, and prolonged engine life. Given their importance in the combustion process, ensuring they are in top condition is worth the effort.

Check out our article on “Spark Plug Maintenance Tips: Take Control of Your Engine” for comprehensive insights on spark plug upkeep. Don’t miss it!

6. Frequently Asked Questions (FAQs)

What Spark Plugs Increase Horsepower?

Iridium spark plugs are often the go-to choice for increasing horsepower due to their superior conductivity and durability. They maintain a stable spark over extended periods, providing consistent combustion that can improve engine performance. However, it’s important to remember that while upgrading to performance spark plugs can help boost your vehicle’s horsepower, the increase might be gradual. The spark plug is just one component of an engine’s complex system, and a holistic approach considering all parts of the system will deliver the most significant improvements. 

Always refer to your vehicle’s manual or consult a professional when choosing spark plugs to increase horsepower to ensure compatibility with your P71.

Which Spark Plug is Best for a BMW?

When choosing the best spark plugs for a BMW, it’s always recommended to stick to the OEM (Original Equipment Manufacturer) parts, mainly if your BMW is still under warranty. The most commonly used and recommended spark plugs for BMWs are manufactured by Bosch and NGK. 

Is NGK or Iridium Spark Plug Better?

When comparing NGK and Iridium spark plugs, it’s important to note that NGK is a brand. At the same time, iridium is used to construct spark plugs. NGK is one of the leading manufacturers of spark plugs, producing iridium and other types of spark plugs.

So, the comparison is between NGK’s Iridium spark plugs and their other types (like copper or platinum). Generally, the iridium ones are considered better due to their excellent performance characteristics and longevity. However, the best choice depends on your vehicle’s requirements and preferences. Always consult a professional or refer to your vehicle’s manual when choosing spark plugs.

7. Conclusion

In conclusion of best spark plugs for p71, the choice and maintenance of spark plugs play a crucial role in your vehicle’s performance, fuel efficiency, and longevity. Whether you own a P71 or any other model, choosing the right type of spark plug, maintaining the appropriate gap size, and rendering regular inspections and cleaning are indispensable. While iridium spark plugs are often preferred for their durability and performance, the best choice depends on your vehicle’s specific needs and the guidelines in your vehicle’s manual. Remember, while spark plugs are only one component in your vehicle’s complex engine system, their proper care and maintenance can save you from costly repairs and ensure optimal vehicle performance.

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