1978 Jaguar XJ12 Ignition and Tune-Up Products
Find Your Specific 1978 Jaguar XJ12 Ignition and Tune-Up Products
Below you will find various in-demand Jaguar Ignition and Tune-Up Products, components and accessories for your 1978 XJ12. Advance Auto Parts has popular XJ12 parts like Ignition Coils and Boots, Ignition Kits, Distributors and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other XJ12 model years including
1973,
1974,
1975,
1976,
1977,
1979,
1994,
1995,
1996 and more. Select a category of 1978 Jaguar XJ12 Ignition and Tune-Up Products below and start saving instantly.
Popular 1978 Jaguar XJ12 Ignition and Tune-Up Products Categories
Essential Ignition and Tune-Up Products for 1978 Jaguar XJ12s
Carquest Premium – Carquest Ignition Coil, EBC1464 (Part No.EBC1464)
from
$64.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Carquest Premium – Carquest Ignition Coil: Meets or Exceeds OE Specifications, 1 Count, EBE1838 (Part No.EBE1838)
from
$109.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty (limited). Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Carquest – Carquest Ignition Coil: Meets OE Specifications, 1 Count, 26E1066 (Part No.26E1066)
from
$97.99
Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance. Carquest ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Carquest Premium – Carquest Ignition Coil, EBC1677 (Part No.EBC1677)
from
$75.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Carquest Premium – Carquest Multi-Use Connector, ABA3459 (Part No.ABA3459)
from
$23.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA1146 (Part No.PTA1146)
from
$23.49
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Tapered Seat, 42008 (Part No.42008)
from
$10.49
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.
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Carquest Premium – Carquest Distributor Rotor, DAA1418 (Part No.DAA1418)
from
$98.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.
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DENSO – DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IW20, 5306 (Part No.5306)
from
$10.99
Iridium Power Spark Plug delivers unmatched performance with the world’s smallest iridium center electrode at just 0.4mm, ensuring maximum spark energy for superior combustion. Engineered with patented 360-degree laser welding and a U-groove taper cut ground electrode, it optimizes flame propagation for enhanced engine efficiency. Built to withstand extreme temperatures exceeding 4000 Deg F, its burnished nickel plating offers exceptional resistance to corrosion and high-temperature endurance. Designed for a wide range of applications, including classic and collector cars, this spark plug provides superior horsepower and fuel efficiency while requiring 5,000 volts less to fire compared to conventional plugs. Its durable iridium material and flat seat type ensure long-lasting reliability, while enhanced engine starts reduce misfires even under heavy loads. Experience the pinnacle of spark plug technology with Iridium Power for maximum performance and efficiency.
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Autolite – Autolite Platinum Spark Plug (AP103): Improved Performance & Durability (Part No.AP103)
from
$5.49
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, enhanced acceleration, and improved fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers excellent thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell resists corrosion for long-lasting durability. With a mid-projection standard center electrode and a tapered seat type, these performance-grade spark plugs deliver consistent results. The combination of platinum and nickel materials in the electrode tips further enhances reliability, making them a trusted choice for maintaining engine efficiency and longevity.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 103 (Part No.103)
from
$4.79
Autolite Copper spark plugs are designed to provide reliable performance and durability, making them an excellent choice for maintaining your vehicle’s efficiency. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are engineered for extended life, while the mid-projection design optimizes spark delivery. A high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, contributing to superior strength and reliability. The nickel-plated shell resists corrosion, ensuring long-lasting durability even in demanding conditions. With a tapered seat type and integrated resistor, these spark plugs are built to meet performance expectations, delivering quick starts and the power your vehicle needs.
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NGK – NGK G-Power Spark Plug (BPR6EGP): Enhanced Durability & Fuel Efficiency, 7084 (Part No.7084)
from
$6.99
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
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Champion – Champion Copper Plus Spark Plug N9YC – Dependable Performance & Durability, 300 (Part No.300)
from
$3.99
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 64 (Part No.64)
from
$4.49
Autolite Copper spark plugs are crafted to ensure quick starts and reliable performance, making them a dependable choice for your vehicle or application. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrode enhance durability for extended use. The high alumina multi-rib ceramic insulator boosts thermal conductivity and insulation, ensuring superior strength under demanding conditions. With a nickel-plated shell, these spark plugs resist corrosion, adding to their longevity. Designed for optimal fuel efficiency, they help improve fuel economy, saving you money over time. The mid-projection standard center electrode and flat seat type further contribute to their consistent performance. Equipped with a resistor, these spark plugs are built to meet regular grade expectations while delivering reliable ignition and smooth operation.
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NGK – NGK Iridium IX Spark Plug (BPR6EIX): Enhanced Acceleration & Durability, 6637 (Part No.6637)
from
$16.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
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Champion – Champion Copper Plus Spark Plug RN9YC – Dependable Performance & Durability, 415 (Part No.415)
from
$5.99
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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Champion – Champion Copper Plus Spark Plug RS9YC – Dependable Performance & Durability, 304 (Part No.304)
from
$4.79
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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Autolite Iridium – Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP64 (Part No.XP64)
from
$10.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.
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Carquest Premium – Carquest Ignition Conversion Kit, CBA1740 (Part No.CBA1740)
from
$319.99
The Ignition Conversion Kit allows point type ignition systems to be converted to an electronic ignition type system. These universal kits are designed to fit directly into the current distributor with little modification required.
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Upgrade your 1978 Jaguar XJ12 with Top-Quality Ignition and Tune-Up Products
When it comes to maintaining or upgrading your 1978 Jaguar XJ12, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Jaguar or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your XJ12 functioning at its best. At Advance Auto Parts, we offer a wide selection of 21 Ignition and Tune-Up Products for the 1978 Jaguar XJ12, designed to meet your needs without breaking the bank.
From
Ignition Coils and Boot
replacements to
Ignition Kits
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Ignition and Tune-Up Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Ignition and Tune-Up Products for your 1978 Jaguar XJ12 at great prices.
Our Ignition and Tune-Up Products inventory for this model
ranges from just $2.65 to $319.99, with
an average price of $31.88.
Our 21 Ignition and Tune-Up Products in stock come from 9 trusted brands, so you’re sure to find the right part for your 1978 Jaguar XJ12 without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1978 Jaguar XJ12, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names
like NGK, Champion, Autolite, and more.
NGK Ignition and Tune-Up Products
start at just $5.59 and boast an impressive 4.8 stars average rating from customers.
Champion and Autolite also bring quality to the table, with Ignition and Tune-Up Products available starting at $3.99, and at an average 4.8 stars rating.
With 109 customer reviews and counting, our 1978 Jaguar XJ12 Ignition and Tune-Up Products have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Ignition and Tune-Up Product upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals
and more to make sure your 1978 Jaguar XJ12 is always ready to roll. We’re committed to providing you with everything you need to keep your XJ12 in top shape, all in one place.
Start shopping confidently below for your 1978 Jaguar XJ12!
Best-Selling Ignition Coils and Boots for 1978 Jaguar XJ12s
Enhance the driving experience in your Jaguar with 3 quality Ignition Coils and Boot components, starting at $23.99.
Carquest Premium – Carquest Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece, EBC1527 (Part No.EBC1527)
from
$35.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Carquest Premium – Carquest Multi-Use Connector, ABA3459 (Part No.ABA3459)
from
$23.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
Carquest Premium – Carquest Ignition Coil, EBC1464 (Part No.EBC1464)
from
$64.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Most Popular 1978 Jaguar XJ12 Ignition Kits
Customize your Jaguar with 1 Ignition Kits products
like Ignition Conversion Kits, all
priced under $319.99.
Carquest Premium – Carquest Ignition Conversion Kit, CBA1740 (Part No.CBA1740)
from
$319.99
The Ignition Conversion Kit allows point type ignition systems to be converted to an electronic ignition type system. These universal kits are designed to fit directly into the current distributor with little modification required.
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Top Picks for 1978 Jaguar XJ12 Distributors
Upgrade Jaguar XJ12s with top-quality Distributors parts, including 1 OEM and aftermarket selections for your 1978 model.
Carquest Premium – Carquest Distributor Rotor, DAA1418 (Part No.DAA1418)
from
$98.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.
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In-Demand Spark Plugs for 1978 Jaguar XJ12s
Select from 16 premium Spark Plugs parts for your 1978 Jaguar XJ12, with prices ranging from $3.99 to $16.99.
NGK – NGK Standard Nickel Spark Plug (BPR6ES): Reliable OE Performance, 7131 (Part No.7131)
from
$5.59
NGK Standard spark plugs (in the iconic NGK ‘yellow box’ packaging) are a proven OE cornerstone and technology customers have relied on for decades. Engineered specifically for OE applications, NGK Standard spark plugs provide OE quality nickel alloy reliable performance and design. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance, while triple gasket sealing prevents combustion gas leakage. Solid 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
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Autolite – Autolite Platinum Spark Plug: Improved Performance & Durability, AP64 (Part No.AP64)
from
$5.49
Autolite Platinum spark plugs are crafted for exceptional performance and durability, making them an ideal choice for older engine designs. Featuring a platinum center electrode firing tip, they ensure quicker firing, smoother starts, and enhanced fuel efficiency. The platinum construction resists gap erosion, extending the service life, while the high alumina ceramic insulator provides superior thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell offers excellent corrosion resistance for long-lasting durability. With a mid-projection standard center electrode and a flat seat type, these performance-grade spark plugs deliver consistent results. The combination of a platinum tip and nickel ground electrode ensures optimal ignition, making these spark plugs a dependable upgrade for improved acceleration and overall engine efficiency.
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Champion – Champion Copper Plus Spark Plug N9YC – Dependable Performance & Durability, 300 (Part No.300)
from
$3.99
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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NGK – NGK V-Power Nickel Spark Plug (BPR6EY): Enhanced Ignitability & Performance, 6427 (Part No.6427)
from
$5.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
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Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Tapered Seat, 42008 (Part No.42008)
from
$10.49
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.
See More
DENSO – DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IW20TT, 4709 (Part No.4709)
from
$12.99
Experience the perfect blend of durability and performance with this Iridium TT Spark Plug. Featuring a 0.4mm Iridium center electrode – the world’s smallest diameter – it maximizes firing potential for unmatched ignition efficiency. The 0.7mm needle tip ground electrode enhances spark energy while reducing heat quenching, ensuring consistent performance. Built with DENSO’s patented Iridium-Rhodium alloy formula, this spark plug boasts the highest concentration of iridium for superior durability, even under extreme conditions exceeding 4000 Deg F. The 360-degree laser welding process guarantees a robust bond and structural integrity, making it a reliable choice for high-performance engines. Designed with a flat seat type and OE-style durability, this spark plug delivers the power and torque you demand without compromising longevity. Whether you’re seeking enhanced engine efficiency or enduring reliability, this spark plug is engineered to exceed expectations.
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NGK – NGK Iridium IX Spark Plug (BPR6EIX): Enhanced Acceleration & Durability, 6637 (Part No.6637)
from
$16.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
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Champion – Champion Copper Plus Spark Plug RN9YC – Dependable Performance & Durability, 415 (Part No.415)
from
$5.99
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Longer Service Life, APP64 (Part No.APP64)
from
$7.49
Double Platinum Spark Plug offers enhanced durability and longer service life, making it a top choice for performance-focused engines. Engineered with a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring consistent ignition and reliability. The yttrium-enhanced ground electrode provides superior heat transfer, allowing the spark plug to withstand high temperatures and pressures for extended durability. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for added safety. Designed with a mid-projection standard center electrode and flat seat type, this spark plug is tailored for distributor-less ignition system (DIS) engines. Both the center and ground electrode tips are crafted from platinum, delivering superior performance compared to copper and standard platinum plugs. With a resistor type included, this spark plug is built to meet the demands of modern engines, offering exceptional value and reliability for long-term use.
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NGK – NGK G-Power Spark Plug (BPR6EGP): Enhanced Durability & Fuel Efficiency, 7084 (Part No.7084)
from
$6.99
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
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E3 – DiamondFire Spark Plug (E3.46): Enhanced Power & Fuel Efficiency (Part No.E3.46)
from
$8.49
The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.46 is a 14mm, 0.750 reach plug with a gasket seat. It fits a wide variety of applications from the 60s to early 90s, especially import. E3.46 is widely stocked in automotive retail stores. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 64 (Part No.64)
from
$4.49
Autolite Copper spark plugs are crafted to ensure quick starts and reliable performance, making them a dependable choice for your vehicle or application. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrode enhance durability for extended use. The high alumina multi-rib ceramic insulator boosts thermal conductivity and insulation, ensuring superior strength under demanding conditions. With a nickel-plated shell, these spark plugs resist corrosion, adding to their longevity. Designed for optimal fuel efficiency, they help improve fuel economy, saving you money over time. The mid-projection standard center electrode and flat seat type further contribute to their consistent performance. Equipped with a resistor, these spark plugs are built to meet regular grade expectations while delivering reliable ignition and smooth operation.
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ACDelco – ACDelco Conventional Spark Plug, R43XLS (Part No.R43XLS)
from
$6.49
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
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Autolite Iridium – Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP64 (Part No.XP64)
from
$10.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.
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Motorcraft – Motorcraft Standard Spark Plug (AGS32C): Reliable Performance & Durability, SP-436 (Part No.SP-436)
from
$4.49
Standard Spark Plug (AGS32C) by Motorcraft is the ultimate choice for reliable performance and durability, specifically engineered to meet Ford’s stringent standards. Designed as original equipment for Ford, Lincoln, and Mercury vehicles, these spark plugs ensure an exact fit while delivering enhanced durability, reduced fuel consumption, and optimized emissions. Crafted with high-quality nickel for both the center and ground electrode tips, they resist oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator effectively prevents misfires, while the design helps avoid false check engine lights, providing peace of mind for drivers. With service intervals of up to 100,000 miles, these spark plugs offer exceptional value and convenience. Backed by Motorcraft’s Service Parts Warranty, they are ideal for domestic and import cars and trucks of all sizes, making them a versatile solution for almost any application. Trust Motorcraft to deliver the same reliable ignition components your vehicle was manufactured with.
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DENSO – DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IW20, 5306 (Part No.5306)
from
$10.99
Iridium Power Spark Plug delivers unmatched performance with the world’s smallest iridium center electrode at just 0.4mm, ensuring maximum spark energy for superior combustion. Engineered with patented 360-degree laser welding and a U-groove taper cut ground electrode, it optimizes flame propagation for enhanced engine efficiency. Built to withstand extreme temperatures exceeding 4000 Deg F, its burnished nickel plating offers exceptional resistance to corrosion and high-temperature endurance. Designed for a wide range of applications, including classic and collector cars, this spark plug provides superior horsepower and fuel efficiency while requiring 5,000 volts less to fire compared to conventional plugs. Its durable iridium material and flat seat type ensure long-lasting reliability, while enhanced engine starts reduce misfires even under heavy loads. Experience the pinnacle of spark plug technology with Iridium Power for maximum performance and efficiency.
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Top-Rated Ignition and Tune-Up Products Brands For Your 1978 Jaguar XJ12
Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 1978 Jaguar XJ12s. Below you’ll find some of our best rated Ignition and Tune-Up Products from NGK, Champion, and Autolite, and more. Ignition and Tune-Up Products from these brands that fit a 1978 XJ12 start at just $3.99 and are rated as high as 4.8 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.
Popular NGK 1978 Jaguar XJ12 Ignition and Tune-Up Products
When it comes to maintaining or upgrading your 1978 Jaguar XJ12, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. NGK ticks all of those boxes. We offer a wide selection of NGK Ignition and Tune-Up Products, specifically designed for the 1978 Jaguar XJ12. With over 3 NGK brand Ignition and Tune-Up Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $5.59, with an average price of just $9.52. Plus, with over 61 customer reviews and an average rating of 4.8 stars, you can trust that our NGK Ignition and Tune-Up Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
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NGK Iridium IX Spark Plug (BPR6EIX): Enhanced Acceleration & Durability, 6637
“I read about using Iridium spark plugs to replace the standard nickel plugs in small engines to improve the efficiency. I installed this plug in a Hon”
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NGK V-Power Nickel Spark Plug (BPR6EY): Enhanced Ignitability & Performance, 6427
“Fast and easy way to buy.”
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$5.59
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NGK Standard Nickel Spark Plug (BPR6ES): Reliable OE Performance, 7131
“They spark well. Engine runs noticeably better with them in. Would not run without them. The old dirty plugs ran bad. These are better.
I run NGK in”
Popular Champion 1978 Jaguar XJ12 Ignition and Tune-Up Products
Champion auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 1978 Jaguar XJ12 owner should feel confident when installing genuine Champion parts in their vehicle. To ensure the best fit and performance for your 1978 XJ12, Advance Auto Parts carries a full inventory of 2 Champion Ignition and Tune-Up Products. Plus you will be keeping your Jaguar in peak condition while saving money because prices on these Champion Ignition and Tune-Up Products range from $3.99 to $5.99, plus, with more than 4 customer reviews and an impressive 4.8 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.
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Champion Copper Plus Spark Plug N9YC – Dependable Performance & Durability, 300
“Works as it should”
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Champion Copper Plus Spark Plug RN9YC – Dependable Performance & Durability, 415
“Exact fit. In stock. Good price. High quality.”
FAQs for 1978 Jaguar XJ12 Ignition and Tune-Up Products
Which Ignition and Tune-Up Products are best-sellers for 1978 Jaguar XJ12s?
Out of 21 Ignition and Tune-Up Products that fit 1978 Jaguar XJ12s, the following parts are the top sellers:
- DiamondFire Spark Plug (E3.46): Enhanced Power & Fuel Efficiency (15650145) – $8.49
- ACDelco Conventional Spark Plug, R43XLS (5391393) – $6.49
- Autolite Platinum Spark Plug: Improved Performance & Durability, AP64 (5393876) – $5.49
What’s the price range for 1978 Jaguar XJ12 Ignition and Tune-Up Products?
Ignition and Tune-Up Product prices for the 1978 Jaguar XJ12 start at $2.65 and go up to $319.99 for the most premium parts.
What’s the average price of a Ignition and Tune-Up Product for a 1978 Jaguar XJ12?
The average price for Ignition and Tune-Up Products for the 1978 Jaguar XJ12 is $31.88. Keep in mind the variety of part types within our Ignition and Tune-Up Product category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Ignition and Tune-Up Products for other Jaguar XJ12 model years?
What are the cheapest Ignition and Tune-Up Products for my 1978 Jaguar XJ12?
The cheapest 1978 Jaguar XJ12 Ignition and Tune-Up Products we carry in stock are:
- Champion Copper Plus Spark Plug N9YC – Dependable Performance & Durability, 300 (89022188) – $3.99
- Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 64 (5390214) – $4.49
- Motorcraft Standard Spark Plug (AGS32C): Reliable Performance & Durability, SP-436 (89022224) – $4.49
- Autolite Platinum Spark Plug: Improved Performance & Durability, AP64 (5393876) – $5.49
- NGK Standard Nickel Spark Plug (BPR6ES): Reliable OE Performance, 7131 (5392365) – $5.59
What are the top-rated Ignition and Tune-Up Products that fit the 1978 Jaguar XJ12?
Out of 109 reviews by customers, our 1978 Jaguar XJ12 Ignition and Tune-Up Products have an average customer rating of . These are some of the highest-rated Ignition and Tune-Up Product types for the 1978 Jaguar XJ12 and their top-rated products:
- Spark Plugs
- NGK Standard Nickel Spark Plug (BPR6ES): Reliable OE Performance, 7131 (5392365) – $5.59
- Champion Copper Plus Spark Plug N9YC – Dependable Performance & Durability, 300 (89022188) – $3.99
- NGK V-Power Nickel Spark Plug (BPR6EY): Enhanced Ignitability & Performance, 6427 (19650225) – $5.99
What types of Ignition and Tune-Up Products do you sell for my 1978 Jaguar XJ12?
As of 8/2/26, these are some of the most in-demand types of Ignition and Tune-Up Products for a 1978 Jaguar XJ12:
Can I get help with 1978 Jaguar XJ12 Ignition and Tune-Up Product orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Jaguar Ignition and Tune-Up Products and more.
What is your return policy for Jaguar XJ12 Ignition and Tune-Up Products?
Advance Auto Parts keeps returns simple. For new Jaguar XJ12 Ignition and Tune-Up Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
