Click the image to expand

Denso Iridium TT Spark Plug | IT20TT

Audi, Cadillac, Chevrolet, Dodge, Eagle, Ford, Jaguar, Land Rover, Lincoln, Mazda & more
$7.19
Reg
$7.49
List
$10.49
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
Loading...

Make Sure It Fits

P/N: IT20TT Denso Iridium TT
Cross References:
  • 4714

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.

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 1 additional part(s) that are frequently viewed together.

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 Iridium TT 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
97-99 - A8
Iridium-Platinum Resistor Twin Tip
97-99 - A8 Quattro
Iridium-Platinum Resistor Twin Tip
90-94 - V8 Quattro
Iridium-Platinum Resistor Twin Tip
Cadillac
86-88 - Cimarron Base, d'Oro
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
09-12 - CTS V
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Chevrolet
90-12 - Camaro RS, ZL1
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
87-90 - Cavalier Base, CS, RS, VL, Z24
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
06-12 - Corvette Base, 427 Limited Edition Z06, Z06, Z06 Carbon, ZR1
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
91-95 - Lumina Euro, LS, Z34
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
95-95 - Monte Carlo Z34
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
75-76 - Vega Cosworth
2.0L Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Dodge
90-92 - Monaco ES, LE
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Eagle
88-89 - Medallion DL, LX
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
88-92 - Premier ES, ES Limited, LX
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Ford
86-86 - Aerostar Base, XL, XLT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: CARB; Fuel Type: GAS
86-87 - Aerostar Base, XL, XLT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
92-94 - Crown Victoria Base, LX, Police Interceptor, S, Touring Sedan
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
03-08 - E-150 Base, Chateau, XL, XLT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
98-98 - E-150 Econoline Base, XL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: BI-FUEL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
99-02 - E-150 Econoline Base, XL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
09-09 - E-250
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: FLEX
03-08 - E-250
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
98-99 - E-250 Econoline Base, XL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: BI-FUEL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
00-02 - E-250 Econoline Base, XL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
98-98 - E-350 Econoline Base, XL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: BI-FUEL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
98-98 - E-350 Econoline Base, XL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
05-05 - E-350 Super Duty
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: CNG
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
04-09 - E-350 Super Duty Base, Chateau, XL, XLT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
84-85 - Escort GT Turbo
Iridium-Platinum L4 Resistor Turbo Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
81-83 - Escort Base, GL, GLX, GT, L & more
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: CARB; Fuel Type: GAS
86-86 - Escort GL, GT, L, LX, Pony
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
00-05 - Excursion 4WD Eddie Bauer, Limited, XLS, XLT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
00-05 - Excursion RWD Eddie Bauer, Limited, XLS, XLT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Jaguar
81-92 - XJS Base, C, Classic Collection, Collection Rouge
Iridium-Platinum Resistor Twin Tip
Land Rover
05-07 - LR3 Base, HSE, SE
Iridium-Platinum Resistor Twin Tip
Lincoln
93-95 - Mark VIII Base, LSC
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
98-00 - Navigator 4WD
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
98-00 - Navigator RWD
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
91-94 - Town Car Base, Cartier, Cypress, Executive, Jack Nicklaus & more
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Mazda
03-03 - 6 S
Iridium-Platinum Resistor Twin Tip
95-97 - B2300 Base, SE
Iridium-Platinum Resistor Twin Tip
94-94 - B2300 Base, SE
Iridium-Platinum Resistor Twin Tip w/ Dual Plug Head
95-96 - B2300 4WD
Iridium-Platinum Resistor Twin Tip
95-96 - B2300 RWD
Iridium-Platinum Resistor Twin Tip
94-04 - B3000 Base, DS, SE, SX, Troy Lee
Iridium-Platinum Resistor Twin Tip
94-00 - B3000 4WD Base, SE
Iridium-Platinum Resistor Twin Tip
94-00 - B3000 RWD Base, SE
Iridium-Platinum Resistor Twin Tip
95-09 - B4000 Base, SE
Iridium-Platinum Resistor Twin Tip
94-96 - B4000 4WD LE, SE
Iridium-Platinum Resistor Twin Tip
94-96 - B4000 RWD LE, SE
Iridium-Platinum Resistor Twin Tip
91-91 - Navajo LX
Iridium-Platinum Resistor Twin Tip
92-94 - Navajo 4WD DX, LX
Iridium-Platinum Resistor Twin Tip
92-94 - Navajo RWD DX, LX
Iridium-Platinum Resistor Twin Tip
Mercedes
91-93 - 190E 2.3
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
86-86 - 190E 2.3, 2.3-16
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS; Valvesper Engine: 8
Mercury
83-84 - Capri Black Magic RWD, Crimson Cat RWD, GS RWD, L RWD, RS Turbo & more
Iridium-Platinum L4 Resistor Turbo Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
84-86 - Cougar XR-7
Iridium-Platinum L4 Resistor Turbo Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
94-95 - Cougar XR-7
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
92-94 - Grand Marquis GS, LS
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
85-85 - Lynx Base, GL, GS, L, XR3
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: CARB; Fuel Type: GAS
84-86 - Lynx Base, GL, GS, L, LS & more
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
07-10 - Mountaineer AWD Base, Premier
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
07-10 - Mountaineer RWD Base, Premier
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
86-86 - Sable GS, LS
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
86-87 - Sable GS, LS
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
84-84 - Topaz Base, GS, LS
Iridium-Platinum L4 Resistor Twin Tip; Fuel Delivery Type: CARB; Fuel Type: GAS
Oldsmobile
91-95 - Cutlass Supreme Base, International, S, SL
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
86-87 - Firenza GT
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Pontiac
89-89 - Firebird Trans Am, Trans Am GTA SE
Iridium-Platinum Resistor Turbo Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
90-90 - Firebird
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
89-90 - Grand Prix Mclaren, SE FWD, STE FWD
Iridium-Platinum Resistor Turbo Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
91-95 - Grand Prix GT, GTP, LE, SE, STE
Iridium-Platinum Resistor Twin Tip; Fuel Delivery Type: FI; Fuel Type: GAS
Volvo
76-81 - 262 Base, C, GL
Iridium-Platinum Resistor Twin Tip
76-82 - 264 GL, GLE
Iridium-Platinum Resistor Twin Tip
76-81 - 265 Base, GL, GLE
Iridium-Platinum Resistor Twin Tip
83-90 - 760 GLE
Iridium-Platinum Resistor Twin Tip
87-90 - 780
Iridium-Platinum Resistor Twin Tip