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Denso Spark Plug | K20PRU

Audi, Chrysler, Dodge, Geo, Infiniti, Isuzu, Jaguar, Kia, Mitsubishi, Plymouth & more
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$2.85
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Make Sure It Fits

P/N: K20PRU Denso
Cross References:
  • 3145
  • W01331641699

Spark plugs provide the spark needed to ignite the air/fuel mixture in each cylinder for engine combustion. High voltage from the ignition coil is transferred through the spark plug to an air gap between the spark plug tip and the spark plug ground to the engine. Once the voltage reaches the air gap, the voltage jumps the gap in the form of a spark, igniting a compressed air fuel charge inside the cylinder. The air fuel charge explodes, creating the force needed to push the cylinder down and turning the engine crankshaft to propel the engine. In short, spark plugs serve a vital function in keeping your vehicle running properly.

Components of a Spark Plug
  • A metal terminal that connects to the ignition system
  • A center electrode for current to flow through the spark plug with a tip for the current to jump making the spark
  • A ribbed ceramic insulator to keep current flowing through the spark plug center electrode and not into other parts of the engine
  • A threaded metal case to anchor the spark plug into the cylinder head with a ground electrode for the spark to jump to
  • A seal to seal the spark plug case to the cylinder head to prevent cylinder compression from escaping
Types of Spark Plugs

The biggest differences in spark plug construction are the materials used for the electrodes, their conductivity, and their wearability.

  • Copper is the base material for the center electrode on most spark plugs as it provides superb conductivity. These tend to wear quickly from the electrical transfer created by the spark and fully copper spark plugs need to be replaced every 15,000 miles.
  • Copper core spark plugs with yttrium or nickel tipped electrodes and grounds take longer to wear and can last up to 30,000 miles.
  • Platinum tipped copper core electrodes wear even less, provide superior conductivity, and can last up to 60,000 miles.
  • Iridium tipped copper core spark plugs wear the least and can last over 100,000 miles.

When a spark plug fails prematurely it will provide a weak spark or no spark at all. Causes of premature spark plug failure can include oil leaking from the valve cover into the spark plug chamber, your engine running too lean and overheating the spark plug, and your engine running too rich and fuel fouling the plug.

Most engines are designed to run on only one type of spark plug based on its use. Be sure to check your owner’s manual for the right type of spark plug needed for your vehicle.

View more Denso Spark Plugs.

Denso is a worldwide leader in the manufacture of advanced automotive technology, systems, and components. They are OEM (original equipment manufacturer) on numerous powertrain, climate control, electronics, safety, and telematics for many different car and truck manufacturers around the world. Its aftermarket division of filters, spark plugs, and wipers are also built to OE specifications to ensure proper fitment and function.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Why Buy OEM & Genuine Replacement Auto Parts from AutohausAZ?

Auto parts at wholesale prices is what you will find at AutohausAZ. Have you been searching the web for auto parts for your vehicle? You have come to the right place! Here at Autohaus, we strive to offer low prices on quality replacement parts and providing first rate customer service.

What This Denso Spark Plug Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

Audi
03-04 - A4 Base, Cabriolet
Resistor Plug; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
05-06 - A4 Base, Cabriolet
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - A4 Quattro Base, Avant, Cabriolet
Resistor Plug; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
05-05 - A4 Quattro Base, Avant
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - A6 Quattro
Resistor Plug; Engine VIN: D; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - Allroad Quattro
Resistor Plug; Engine VIN: D; Fuel Delivery Type: FI; Fuel Type: GAS
05-05 - Allroad Quattro
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
92-93 - S4
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: P; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: R; Fuel Delivery Type: FI; Fuel Type: GAS
94-94 - S4
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: R; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - S6
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - TT
Resistor Plug; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
01-02 - TT
Resistor Plug; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
Resistor Plug; Engine VIN: X; Fuel Delivery Type: FI; Fuel Type: GAS
05-06 - TT
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
01-02 - TT Quattro
Resistor Plug; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
Resistor Plug; Engine VIN: X; Fuel Delivery Type: FI; Fuel Type: GAS
03-06 - TT Quattro
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
Chrysler
00-00 - Cirrus LX, LXi
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
Dodge
02-04 - Neon Base, ES, SE, SXT
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
02-02 - Neon R/T
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: F; Fuel Delivery Type: FI; Fuel Type: GAS
01-01 - Neon R/T
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: F; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Fuel Delivery Type: FI; Fuel Type: GAS
99-99 - Neon ACR, High Line, R/T, Sport
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: Y; Fuel Delivery Type: FI; Fuel Type: GAS
01-02 - Neon Base, ACR, ES, SE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - Neon R/T
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: F; Fuel Delivery Type: FI; Fuel Type: GAS
95-98 - Neon ACR, High Line, R/T, Sport
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: Y; Fuel Delivery Type: FI; Fuel Type: GAS
97-05 - Neon Base, High Line, SE, Sport, SXT
O.E. Recommended Resistor Plug With Patented U-Groove Design; Fuel Delivery Type: FI; Fuel Type: GAS
99-00 - Stratus Base, ES, SE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
Geo
94-94 - Tracker LSi
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
94-94 - Tracker 4WD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
94-94 - Tracker RWD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
Infiniti
94-96 - G20 T
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
Isuzu
92-92 - Impulse RS
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 4; Fuel Delivery Type: FI; Fuel Type: GAS
Jaguar
97-97 - Vanden Plas
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 2; Fuel Delivery Type: FI; Fuel Type: GAS
96-96 - Vanden Plas
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 2; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 7; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - Vanden Plas Base, Majestic
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 7; Fuel Delivery Type: FI; Fuel Type: GAS
97-97 - XJ6 Base, L
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 2; Fuel Delivery Type: FI; Fuel Type: GAS
96-96 - XJ6
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 2; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 7; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - XJ6 Base, Sovereign
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 7; Fuel Delivery Type: FI; Fuel Type: GAS
95-97 - XJR
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 1; Fuel Delivery Type: FI; Fuel Type: GAS
93-96 - XJS Base, 2+2
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 7; Fuel Delivery Type: FI; Fuel Type: GAS
Kia
04-04 - Spectra Base, GS, GSX, LS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 1; Fuel Delivery Type: FI; Fuel Type: GAS
Mitsubishi
93-94 - Eclipse GST
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: F; Fuel Delivery Type: FI; Fuel Type: GAS
90-92 - Eclipse GST
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
Plymouth
96-00 - Breeze Base, Expresso
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
96-01 - Neon Base, ACR, Expresso, High Line, LX & more
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
95-99 - Neon Base, ACR, Expresso, High Line, Sport & more
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: Y; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - Neon Base, ACR, Expresso, High Line, Sport
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: Y; Fuel Delivery Type: FI; Fuel Type: GAS
Saab
05-05 - 9-2X Aero
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
Subaru
02-05 - Impreza WRX
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
Suzuki
95-00 - Esteem GL, GLX, GLX Plus
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 3; Fuel Delivery Type: FI; Fuel Type: GAS
99-99 - Esteem GL, GLX, GLX Plus
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - Sidekick JS, JX
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 0; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - Sidekick JLX Sport, JS Sport, JX Sport
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 2; Fuel Delivery Type: FI; Fuel Type: GAS
94-95 - Sidekick JLX, JS, JX
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 0; Fuel Delivery Type: FI; Fuel Type: GAS
98-98 - X-90 SE
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 1; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - X-90 4WD
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 1; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - X-90 RWD
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 1; Fuel Delivery Type: FI; Fuel Type: GAS
Volvo
92-92 - 940 T
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 8; Fuel Delivery Type: FI; Fuel Type: GAS
00-00 - S40
Copper Resistor U Groove Electrode
00-00 - S40
Resistor Plug; Engine VIN: 25; Fuel Delivery Type: FI; Fuel Type: GAS
01-04 - S40 Base, LSE
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
03-03 - S60 AWD
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
04-04 - S80 2.9
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 92; Fuel Delivery Type: FI; Fuel Type: GAS
02-03 - S80 2.9
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
97-97 - S90
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 96; Fuel Delivery Type: FI; Fuel Type: GAS
00-00 - V40
Copper Resistor U Groove Electrode
00-00 - V40
Resistor Plug; Engine VIN: 25; Fuel Delivery Type: FI; Fuel Type: GAS
01-04 - V40 Base, LSE
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
98-98 - V70 AWD, GLT, X/C AWD
Resistor Plug; Engine VIN: 56; Fuel Delivery Type: FI; Fuel Type: GAS
97-97 - V90
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 96; Fuel Delivery Type: FI; Fuel Type: GAS
VW
03-05 - Beetle Turbo, Turbo S
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
92-92 - Golf GTI 16-Valve
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: E; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: J; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - Golf GTI, GTI 1.8T
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
90-92 - Jetta GL
Copper Resistor U Groove Electrode; Valvesper Engine: 16
92-92 - Jetta GLI 16-Valve
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: E; Fuel Delivery Type: FI; Fuel Type: GAS
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: J; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - Jetta GLS, GLS Turbo
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
92-93 - Passat CL, GL
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
03-04 - Passat
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS