Best Spark Plugs For Jeep 4.0: image
Editor's Pick

‘Bosch Double Platinum’ spark plugs provide 3X longer service life than standard copper firing pins, according to reports. The fuel cell of the car is also made from platinum which provides increased performance and reduced emissions. It has been tested on diesel engines for over 30 years and was found to be environmentally friendly. The ignition system uses only one wire per cylinder. The engine is powered by a high-performance battery. The vehicle has an electronic ignition system with integrated computer control. The batteries are rechargeable using lithium batteries.

Value for Money

Bosch Double Iridium Spark Plugs provide 4X longer service life compared to standard copper firing pin and ground electrode. The plugs are made from stainless steel and have been tested in the US for over 10 years. The spark plugs were first introduced in 1990 with the Jeep Grand Cherokee, which is considered the best-selling vehicle in the US. The original equipment was manufactured by American Motors Corporation (AMC) in 1984. The newer models will be available later this year.

Honorable Mention

Bosch Platinum Spark Plugs have a 2x longer service life compared to standard copper firing pins. The platinum firing pin has a 360-degree continuous laser welding process, which results in improved ignitability and performance. The plugs are made from high-quality stainless steel with no lead or nickel content. The spark plugs can last for up to 10 years. The premium quality of the product is unmatched in the industry. Notably, this comes with a limited lifetime warranty.

Best Spark Plugs For Jeep 4.0

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Top 10 Best Spark Plugs For Jeep 4.0

1
Why we chose it
  • RELY ON QUALITY IGNITION COMPONENTS: From their start in 1936 through today, the NGK product line is proof of their dedication to innovation, performance, and quality. In order to deliver high-quality spark plugs and oxygen sensors to the automotive community, NGK has partnered with auto manufacturers to engineer automotive parts that fit both the vehicles of today and of the future
  • TRUST IN NGK NTK: Explore components built by the world leader in the design of spark plugs and oxygen sensors. Their attention to performance excellence is what has differentiated them from the competition and allowed them to be the number one supplier of spark plugs and oxygen sensors
  • This 6 pack NGK V-Power Spark Plug is compatible with Jeep TJ 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997 4.0L L6 and is perfect for a tune up or performance upgrade.
  • IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug. The corrosion-resistant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency
  • REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, reduces emissions, and enables better fuel economy so that your engine runs at its best. The durable shell reliably protects the spark plug from corrosion, ensuring long-lasting sparking capabilities. The center and ground electrodes promote sharper spark focus for fewer misfires
6 pc NGK V-Power Spark Plugs compatible with Jeep TJ 4.0L L6 1997-2006 Ignition Wire Secondary: image
96%
customers recommend this product
4.8/ 5
Value for money4.7
Mileage4.6
Longevity4.2
2

Autolite XP985-4PK Iridium XP Spark Plug, Pack of 4

82 ratings | 7 offers | 82 Reviews
Price: $20.25$45.08
Why we chose it
  • Platinum protected ground wire for maximum efficiency in all ignition types
  • Better overall ignitability and optimum performance
  • V-trimmed ground electrode for improved ignitability
  • Iridium-enhanced 0.6mm finewire design for optimal durability and performance
  • Limited lifetime warranty
Autolite XP985-4PK Iridium XP Spark Plug, Pack of 4: image
96%
customers recommend this product
4.8/ 5
Value for money5
Mileage5
3

Champion Copper Plus 438 Spark Plug (Carton of 1)

273 ratings | 10 offers | 273 Reviews
Price: $1.81$12.28
Why we chose it
  • Built to ISO and SAE standards for proven performance
  • Copper Plus – Dependable Performance and Durability
  • Superior corrosion resistance
  • Copper core center electrode allows for accurate control of heat range for longer life
Champion Copper Plus 438 Spark Plug (Carton of 1): image
90%
customers recommend this product
4.5/ 5
Value for money4.4
Longevity4.3
Mileage4
4

Denso (5018) QJ16HR-U Traditional Spark Plug, Pack of 1

9 ratings | 10 offers | 9 Reviews
Price: $1.9$8.95
Why we chose it
  • Improved cold-starting
  • Increases engine performance and throttle response
  • QJ16HR-U
  • Stable combustion during idling
  • Efficient fuel consumption
Denso (5018) QJ16HR-U Traditional Spark Plug, Pack of 1: image
100%
customers recommend this product
5/ 5
5

NGK (3459) ZFR5N V-Power Spark Plug, Pack of 1

229 ratings | 8 offers | 229 Reviews
Price: $4.46$7.16
Why we chose it
  • You can depend on NGK for quality and reliability
  • Increases fuel economy and lowers emissions
  • Features trivalent metal plating which offers long lasting durability
  • Built to OEM specifications
  • Corrosion resistant
NGK (3459) ZFR5N V-Power Spark Plug, Pack of 1: image
94%
customers recommend this product
4.7/ 5
Value for money4.7
Mileage4.6
Longevity4.6
6
Why we chose it
  • 360 degree continuous laser welding to fuse the platinum firing pin for increased durability
  • Fit type: Vehicle Specific
  • Original equipment, pre-gapped replacement delivering optimum fit, form and function
  • 4 year performance Satisfaction guarantee
  • Platinum firing pin and Yttrium enhanced ground electrode provide 2X longer service life compared to standard Copper plugs
  • Fine wire design provides better ignitability and performance
Bosch Automotive Platinum Spark Plug for Select American Motors, Chrysler, Dodge, Eagle, Jeep, and Plymouth Cars, Trucks, and SUVs , 6717-4Pk: image
90%
customers recommend this product
4.5/ 5
Value for money4.2
Longevity4.2
Mileage4
7

Champion Double Platinum Power 7034 Spark Plug (Carton of 1)

91 ratings | 21 offers | 91 Reviews
Price: $4.23$19.38
Why we chose it
  • An exclusive heat-active alloy allows the electrodes to reach optimal temperature quickly and maintain stable operating temperature under all engine loads
  • The fine-wire and V-trimmed electrode creates a sharper spark focus than a conventional spark plug
  • Double platinum conductors place platinum on both the center and ground electrodes to ensure longer plug life and minimize wear on both electrode surfaces
  • Double Platinum Power – Premium Spark Plug. More Powerful Performance.
  • Champion double platinum spark plugs utilize an exclusive heat-active alloy The dual platinum fine-wire center electrode and platinum pad electrodes provide sharper spark focus and maximize plug life
  • V-trimmed ground electrode promotes sharper spark focus
  • Maintains stable operating temperature under all engine loads
  • Fine-wire center electrode for greater ignitability
  • Platinum center and ground electrode for greater wear resistance
Champion Double Platinum Power 7034 Spark Plug (Carton of 1): image
90%
customers recommend this product
4.5/ 5
Longevity4.2
Value for money4.1
Mileage4.1
Top Pick
8
Why we chose it
  • JEEP: 1986-92 Comanche, 1979-83 DJ5, 1993-04 Grand Cherokee, 1984-86 Grand Wagoneer, 1980-87 J10, 1981-85 Scrambler, 1997-06 TJ, 1980-87 Wagoneer, 1987-95, 1997-06 Wrangler PLYMOUTH: 1997 Prowler
  • DODGE: 1996-02 Dakota, 1993-97 Intrepid, 2004-06 Ram 1500, 1992-06 Viper EAGLE: 1988-89 Premier, 1993-97 Vision JEEP: 1980-01 Cherokee, 1980-83 CJ5, 1980-86 CJ7
  • AMERICAN MOTORS: 1980 AMX, 1980-83 Concord, 1980-88 Eagle, 1980 Pacer, 1980-83 Spirit CHRYSLER: 1993-97 Concorde, 1994-97 LHS, 1994-96 New Yorker
  • 360 continuous laser welding to fuse the platinum firing pin for increased durability
  • Original equipment, pre-gapped replacement delivering optimum fit, form and function for a wide range of vehicles including, but not limited to, the following:
  • Double Platinum firing pin and ground electrode inlay provide 3X longer service life compared to standard copper plugs
  • 5 year performance satisfaction guarantee
  • Fine wire design provides excellent ignitability and performance
Bosch Automotive Bosch 8115 Double Platinum Spark Plug - Up to 3X Longer Life for Select AMC; Chrysler Concorde New Yorker; Dodge Dakota Intrepid Ram; Jeep Cherokee Wagoneer TJ; Plymouth + More (Pack of 1): image
92%
customers recommend this product
4.6/ 5
9
Why we chose it
  • Fits: 1980 American Motors AMX, 1980-1983 American Motors Concord, 1980-1988 American Motors Eagle, 1980 American Motors Pacer, 1980-1983 American Motors Spirit, 1993-2001 Chrysler Concorde, 1993-1997 Chrysler Intrepid
  • Fits: 1980-1987 Jeep J10, 1981-1985 Jeep Scrambler, 1997-2006 Jeep TJ, 1980-1987 Jeep Wagoneer, 1987-1995,1997-2006 Jeep Wrangler, 1997,1999 Plymouth Prowler
  • Double Iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs
  • Fits: 1980-2001 Jeep Cherokee, 1980-1983 Jeep CJ5, 1980-1986 Jeep CJ7, 1986-1992 Jeep Comanche, 1979-1983 Jeep DJ5, 1993-2004 Jeep Grand Cherokee, 1984-1986 Jeep Grand Wagoneer
  • Original equipment, pre-gapped replacement delivering optimum fit, form and function
  • 360 Degree continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability
  • 0.6mm fine wire firing pin provides superior ignitability and performance
  • Fits: 1994-1997 Chrysler LHS, 1994-1996 Chrysler New Yorker, 1996-2002 Dodge Dakota, 1993-2001 Dodge Intrepid, 2004-2006 Dodge Ram 1500, 1992-2006 Dodge Viper, 1988-1989 Eagle Premier, 1993-1997 Eagle Vision
  • 7 year performance satisfaction
Bosch 9656 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4): image
92%
customers recommend this product
4.6/ 5
Easy to install4.5
Value for money4.2
Longevity4.2
Mileage4.2
10

Champion Champion Iridium 9034 Spark Plug (Carton of 1)

14 ratings | 7 offers | 14 Reviews
Price: $9.35$17.25
Why we chose it
  • Maintains stable operating temperature under all engine loads
  • Iridium center electrode delivers maximum life
  • Champion Iridium – Maximum Performance. Premium Spark Plug
  • Fine-wire center electrode and V-trimmed for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
Champion Champion Iridium 9034 Spark Plug (Carton of 1): image
94%
customers recommend this product
4.7/ 5
Top Pick
Bosch Automotive Bosch 8115 Double Platinum Spark Plug - Up to 3X Longer Life for Select AMC; Chrysler Concorde New Yorker; Dodge Dakota Intrepid Ram; Jeep Cherokee Wagoneer TJ; Plymouth + More (Pack of 1)
Bosch Double Platinum spark plugs are engineered to extend performance life and durability. The fine wire design of the center electrode improves ignitability and performance in your engine while the platinum tip on both the center and ground electrodes ensure longer life.
Ranking the Brands
Sixity Auto: 10.00%
Autolite: 10.00%
Champion: 30.00%
Denso: 10.00%
NGK: 10.00%
Bosch Automotive: 30.00%

Comparison Table

Сomparison: 6 pc NGK V-Power Spark Plugs compatible with Jeep TJ 4.0L L6 1997-2006 Ignition Wire Secondary: imageСomparison: Autolite XP985-4PK Iridium XP Spark Plug, Pack of 4: imageСomparison: Champion Copper Plus 438 Spark Plug (Carton of 1): imageСomparison: Denso (5018) QJ16HR-U Traditional Spark Plug, Pack of 1: imageСomparison: NGK (3459) ZFR5N V-Power Spark Plug, Pack of 1: imageСomparison: Bosch Automotive Platinum Spark Plug for Select American Motors, Chrysler, Dodge, Eagle, Jeep, and Plymouth Cars, Trucks, and SUVs , 6717-4Pk: imageСomparison: Champion Double Platinum Power 7034 Spark Plug (Carton of 1): imageСomparison: Bosch Automotive Bosch 8115 Double Platinum Spark Plug - Up to 3X Longer Life for Select AMC; Chrysler Concorde New Yorker; Dodge Dakota Intrepid Ram; Jeep Cherokee Wagoneer TJ; Plymouth + More (Pack of 1): imageСomparison: Bosch 9656 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4): imageСomparison: Champion Champion Iridium 9034 Spark Plug (Carton of 1): image
6 pc NGK V-Power Spark Plugs compatible with Jeep TJ 4.0L L6 1997-2006 Ignition Wire SecondaryAutolite XP985-4PK Iridium XP Spark Plug, Pack of 4Champion Copper Plus 438 Spark Plug (Carton of 1)Denso (5018) QJ16HR-U Traditional Spark Plug, Pack of 1NGK (3459) ZFR5N V-Power Spark Plug, Pack of 1Bosch Automotive Platinum Spark Plug for Select American Motors, Chrysler, Dodge, Eagle, Jeep, and Plymouth Cars, Trucks, and SUVs , 6717-4PkChampion Double Platinum Power 7034 Spark Plug (Carton of 1)Bosch Automotive Bosch 8115 Double Platinum Spark Plug – Up to 3X Longer Life for Select AMC; Chrysler Concorde New Yorker; Dodge Dakota Intrepid Ram; Jeep Cherokee Wagoneer TJ; Plymouth + More (Pack of 1)Bosch 9656 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4)Champion Champion Iridium 9034 Spark Plug (Carton of 1)
BrandSixity AutoAutoliteChampionDensoNGKBosch AutomotiveChampionBosch AutomotiveBosch AutomotiveChampion
Core MaterialCopperIridiumCopperCopperPlatinumIridium
Top Material TypeMetal, CeramicNickelMetalMetal
ManufacturerSixity AutoFRAMChampion Spark PlugDENSONGKBoschChampion Spark PlugBoschBoschChampion Spark Plug
Item Weight10.6 ounces7 ounces1.44 ounces12.8 ounces1.6 ounces6.9 ounces1.6 ounces0.353 ounces6.9 ounces1.6 ounces
Product Dimensions3.7 x 0.94 x 4.98 inches4 x 1 x 1 inches3.9 x 4 x 1 inches2.34 x 0.77 x 0.43 inches12.8 x 7.4 x 5.2 inches3.8 x 0.9 x 0.8 inches
Country of OriginMexicoUSAChinaChinaGermanyUSAGermanyGermanyUSA
ExteriorChromePaintedMachinedMachinedMetalMachined
Is Discontinued By ManufacturerNoNoNoNo

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