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Denso Spark Plug | K16RU

Audi, Chevrolet, Geo, Lexus, Mazda, Nissan, Oldsmobile, Pontiac, Scion, Toyota
$2.19
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$2.28
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$2.85
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Make Sure It Fits

P/N: K16RU Denso
Cross References:
  • 3119

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.

Frequently Viewed Together

We found 3 additional part(s) that are frequently viewed together.

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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
06-09 - A6
Copper Resistor U Groove Electrode
06-07 - A6 Quattro Base, Avant
Copper Resistor U Groove Electrode
10-10 - A6 Quattro Base, Avant
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
10-10 - R8
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
10-10 - S4
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
Chevrolet
94-94 - Beretta Z26
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
90-92 - Corvette ZR-1
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: J; Fuel Delivery Type: FI; Fuel Type: GAS
98-99 - Metro Base, LSi
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 2; Fuel Delivery Type: FI; Fuel Type: GAS
98-99 - Prizm Base, LSi
Copper Resistor U Groove Electrode
00-00 - Tracker LSi
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
00-00 - Tracker 4WD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
00-00 - Tracker RWD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: C; Fuel Delivery Type: FI; Fuel Type: GAS
Geo
93-97 - Prizm LSi
Copper Resistor U Groove Electrode
93-97 - Prizm Base, LSi
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: 6; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Tracker LSi
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Tracker 4WD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Tracker RWD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: U; Fuel Delivery Type: FI; Fuel Type: GAS
Lexus
96-97 - LX450
Resistor Plug; Engine VIN: J; Fuel Delivery Type: FI; Fuel Type: GAS
Mazda
04-05 - Miata Mazdaspeed
Resistor Plug; Fuel Delivery Type: FI; Fuel Type: GAS
Nissan
94-94 - D21
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
90-94 - D21 4WD Base, SE, XE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
90-94 - D21 RWD Base, SE, XE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - Pathfinder SE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - Pathfinder 4WD LE, XE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - Pathfinder RWD LE, XE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Pickup SE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Pickup 4WD XE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Pickup RWD XE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: H; Fuel Delivery Type: FI; Fuel Type: GAS
98-98 - Quest GXE
Copper U Groove Electrode Resistor
Oldsmobile
94-94 - Achieva SC FWD, SL FWD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
Pontiac
94-94 - Grand Am SE
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: 3; Fuel Delivery Type: FI; Fuel Type: GAS
94-94 - Grand Am GT FWD
O.E. Recommended Resistor Plug With Patented U-Groove Design; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
Scion
04-06 - xA
Copper O.E.M. Recommended Resistor U Groove Electrode
04-06 - xB
Copper O.E.M. Recommended Resistor U Groove Electrode
Toyota
89-89 - 4Runner DLX, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: V; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - 4Runner 4WD Base, Limited, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: M; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - 4Runner 4WD SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: V; Fuel Delivery Type: FI; Fuel Type: GAS
99-99 - 4Runner 4WD Base, Limited, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Fuel Delivery Type: FI; Fuel Type: GAS
96-98 - 4Runner RWD Base, Limited, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: M; Fuel Delivery Type: FI; Fuel Type: GAS
90-95 - 4Runner RWD SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: V; Fuel Delivery Type: FI; Fuel Type: GAS
99-99 - 4Runner RWD Base, Limited, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Fuel Delivery Type: FI; Fuel Type: GAS
94-95 - Celica ST
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
96-97 - Celica ST
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: B; Fuel Delivery Type: FI; Fuel Type: GAS
93-97 - Corolla Base, DX, LE
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
96-97 - Corolla CE, DX, LE
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: B; Fuel Delivery Type: FI; Fuel Type: GAS
97-97 - Corolla CE
O.E.M. Recommended Copper Resistor To 7/97 U Groove Electrode; Manufacturer Body Code: AE101
97-97 - Corolla DX
Resistor Plug; Engine VIN: A; Fuel Delivery Type: FI; Fuel Type: GAS
01-05 - Echo
Copper O.E.M. Recommended Resistor U Groove Electrode
93-95 - Land Cruiser
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: D; Fuel Delivery Type: FI; Fuel Type: GAS
96-97 - Land Cruiser
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: J; Fuel Delivery Type: FI; Fuel Type: GAS
89-93 - Pickup
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: V; Fuel Delivery Type: FI; Fuel Type: GAS
89-95 - Pickup 4WD DLX, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: V; Fuel Delivery Type: FI; Fuel Type: GAS
89-95 - Pickup RWD DLX, SR5
DENSO is O.E. Manufacturer / Resistor Plug With Patented U-Groove Design; Engine VIN: V; Fuel Delivery Type: FI; Fuel Type: GAS