9659 Bosch Spark Plug; OE Fine Wire Iridium Spark Plug
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Bosch Spark Plug; OE Fine Wire Iridium Spark Plug | 9659

Buick, Cadillac, Chevrolet, Ford, GMC, Jeep, Lincoln, Mercury, Oldsmobile, Pontiac
$8.05
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$8.39
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$12.75
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Make Sure It Fits

P/N: 9659 Bosch
Description:
OE Fine Wire Iridium Spark Plug

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 Bosch Spark Plugs.

Bosch is the world's largest supplier of components to the automotive industry. The Bosch product line includes alternators & starters, brakes, electronic controls and sensors, fuel system parts and management, ignition system components, and steering system components. All Bosch automotive parts are either OEM (Original Equipment Manufacturer) or made to their specs as a replacement part for the OEM unit.
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 Bosch 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.

Buick
80-92 - Century Base, Custom, Estate, Estate Wagon, Limited & more
Do Not Gap, Gap is Preset
80-85 - Electra Estate Wagon, Estate Wagon RWD, Limited, Limited RWD, Park Avenue & more
Do Not Gap, Gap is Preset
80-80 - Estate Wagon Base, RWD
Do Not Gap, Gap is Preset
80-85 - LeSabre Base, Collector's Edition, Custom, Limited, Limited Edition F/E & more
Do Not Gap, Gap is Preset
80-87 - Regal Base, Estate Wagon, GNX, Grand National, Limited & more
Do Not Gap, Gap is Preset
80-85 - Riviera Base, Limited Edition, Luxury, S, T-Type & more
Do Not Gap, Gap is Preset
91-93 - Roadmaster Base, Estate Wagon, Limited
Do Not Gap, Gap is Preset
80-80 - Skyhawk Base, Designers' Accent Edition, Road Hawk, S
Do Not Gap, Gap is Preset
80-91 - Skylark Base, Custom, Gran Sport, Limited, Luxury Edition & more
Do Not Gap, Gap is Preset
86-87 - Somerset Custom, Limited, T-Type
Do Not Gap, Gap is Preset
85-85 - Somerset Regal Base, Limited
Do Not Gap, Gap is Preset
Cadillac
90-92 - Brougham Base, d'Elegance
Do Not Gap, Gap is Preset
92-92 - Commercial Chassis Brougham
Do Not Gap, Gap is Preset
80-82 - DeVille Base, Cabriolet, d'Elegance
Do Not Gap, Gap is Preset
81-82 - Eldorado Base, Biarritz, Brougham d'Elegance, Cabriolet, Touring
Do Not Gap, Gap is Preset
80-82 - Fleetwood Brougham, Brougham d'Elegance
Do Not Gap, Gap is Preset
81-82 - Seville Base, Elegante
Do Not Gap, Gap is Preset
Chevrolet
85-89 - Astro Base, CL, CS, LT
Do Not Gap, Gap is Preset
90-95 - Astro AWD Base, CL, CS, LT
Do Not Gap, Gap is Preset
90-95 - Astro RWD Base, CL, CS, LT
Do Not Gap, Gap is Preset
88-94 - Blazer Base, Cheyenne, Scottsdale, Silverado, Silverado Sport
Do Not Gap, Gap is Preset
95-95 - Blazer 4WD Base, LT
Do Not Gap, Gap is Preset; Engine VIN: W
95-95 - Blazer AWD LT
Do Not Gap, Gap is Preset; Engine VIN: W
95-95 - Blazer RWD Base, LT
Do Not Gap, Gap is Preset; Engine VIN: W
80-84 - C10 Big Ten, Cheyenne, Custom, Custom Deluxe, Custom RWD & more
Do Not Gap, Gap is Preset
80-83 - C10 Big Ten, Cheyenne RWD, Custom, Custom Deluxe RWD, Scottsdale & more
Do Not Gap, Gap is Preset; Engine VIN: L
80-84 - C10 Suburban Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado
Do Not Gap, Gap is Preset
80-80 - C10 Suburban Custom Deluxe RWD, Scottsdale RWD, Silverado RWD
Do Not Gap, Gap is Preset; Engine VIN: L
88-95 - C1500 Base, 454 SS, Cheyenne, Scottsdale, Silverado & more
Do Not Gap, Gap is Preset
92-93 - C1500 Cheyenne, Scottsdale, Silverado, WT
Do Not Gap, Gap is Preset; Fuel Type: GAS
92-95 - C1500 Suburban Base, LS, LT, Silverado
Do Not Gap, Gap is Preset
80-84 - C20 Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale & more
Do Not Gap, Gap is Preset
80-84 - C20 Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale & more
Do Not Gap, Gap is Preset; Engine VIN: L
80-84 - C20 Suburban Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado
Do Not Gap, Gap is Preset
80-84 - C20 Suburban Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado
Do Not Gap, Gap is Preset; Engine VIN: L
88-95 - C2500 Base, Cheyenne, Scottsdale, Silverado, WT
Do Not Gap, Gap is Preset
Ford
80-96 - Bronco Custom, Eddie Bauer, Ranger XLT, XL, XLS & more
Do Not Gap, Gap is Preset
80-83 - E-100 Econoline Base, Chateau, Custom, XL
Do Not Gap, Gap is Preset
80-83 - E-100 Econoline Club Wagon Base, Chateau, Custom, XL
Do Not Gap, Gap is Preset
80-96 - E-150 Econoline Base, Chateau, Custom, XL
Do Not Gap, Gap is Preset
80-96 - E-150 Econoline Club Wagon Base, Chateau, Custom, XL, XLT
Do Not Gap, Gap is Preset
80-95 - E-250 Econoline Base, Chateau, Custom, XL
Do Not Gap, Gap is Preset
80-91 - E-250 Econoline Club Wagon Base, Chateau, Custom, XL, XLT
Do Not Gap, Gap is Preset
80-96 - E-350 Econoline Base, Chateau, Custom, XL
Do Not Gap, Gap is Preset
80-96 - E-350 Econoline Club Wagon Base, Chateau, Chateau HD, Custom, Custom HD & more
Do Not Gap, Gap is Preset
80-83 - F-100 Base, Custom, Ranger, Ranger Lariat, Ranger XLT & more
Do Not Gap, Gap is Preset
80-96 - F-150 4WD Base, Custom, Eddie Bauer, Ranger, Ranger Lariat & more
Do Not Gap, Gap is Preset
85-85 - F-150 4WD Base, XL, XLT Lariat
Do Not Gap, Gap is Preset; Engine VIN: F
80-96 - F-150 RWD Base, Custom, Eddie Bauer, Ranger, Ranger Lariat & more
Do Not Gap, Gap is Preset
85-85 - F-150 RWD Base, XL, XLT Lariat
Do Not Gap, Gap is Preset; Engine VIN: F
80-97 - F-250 4WD Base, Custom, Eddie Bauer, Lariat, Ranger & more
Do Not Gap, Gap is Preset
85-85 - F-250 4WD Base, XL, XLT Lariat
Do Not Gap, Gap is Preset; Engine VIN: F
95-96 - F-250 4WD Eddie Bauer, Special, XL, XLT
Do Not Gap, Gap is Preset; Engine VIN: N
80-97 - F-250 RWD Base, Custom, Eddie Bauer, Lariat, Ranger & more
Do Not Gap, Gap is Preset
85-85 - F-250 RWD Base, XL, XLT Lariat
Do Not Gap, Gap is Preset; Engine VIN: F
GMC
80-95 - C1500 Base, Heavy Half, High Sierra, Sierra, Sierra Classic & more
Do Not Gap, Gap is Preset
80-81 - C1500 Heavy Half, High Sierra RWD, RWD, Sierra Classic RWD, Sierra Grande RWD & more
Do Not Gap, Gap is Preset; Engine VIN: L
80-95 - C1500 Suburban Base, High Sierra, Sierra Classic, Sierra Grande, SLE & more
Do Not Gap, Gap is Preset
80-81 - C1500 Suburban High Sierra RWD, RWD, Sierra Classic RWD, Sierra Grande RWD
Do Not Gap, Gap is Preset; Engine VIN: L
80-95 - C2500 Base, High Sierra, Sierra, Sierra Classic, Sierra Grande & more
Do Not Gap, Gap is Preset
80-84 - C2500 Base, High Sierra, Sierra Classic, Sierra Grande
Do Not Gap, Gap is Preset; Engine VIN: L
82-95 - C2500 Suburban Base, High Sierra, Sierra Classic, Sierra Grande, SLE & more
Do Not Gap, Gap is Preset
80-84 - C2500 Suburban Base, High Sierra, High Sierra RWD, RWD, Sierra Classic & more
Do Not Gap, Gap is Preset; Engine VIN: L
80-95 - C3500 Base, High Sierra, Sierra, Sierra Classic, Sierra Grande & more
Do Not Gap, Gap is Preset
80-80 - C3500 Base, High Sierra, Sierra Classic, Sierra Grande
Do Not Gap, Gap is Preset; Engine VIN: L
80-87 - Caballero Base, Amarillo, Amarillo RWD, Conquista, Conquista RWD & more
Do Not Gap, Gap is Preset
80-95 - G1500 Rally, Rally Custom, Rally STX, Vandura
Do Not Gap, Gap is Preset
80-95 - G2500 Rally, Rally Custom, Rally STX, Vandura
Do Not Gap, Gap is Preset
81-96 - G3500 Magnavan, Rally, Rally Camper Special, Rally STX, Vandura & more
Do Not Gap, Gap is Preset
88-88 - G3500 Magnavan, Rally, Rally Camper Special, Rally Custom, Rally STX & more
Do Not Gap, Gap is Preset; Engine VIN: K
80-84 - G3500 Magnavan, Magnavan RWD, Rally, Rally Camper Special, Rally Custom & more
Do Not Gap, Gap is Preset; Engine VIN: L
80-91 - Jimmy Base, Sierra Classic, Street Coupe
Do Not Gap, Gap is Preset
80-95 - Jimmy 4WD Base, High Sierra, Sierra Classic, Sierra Grande, SL & more
Do Not Gap, Gap is Preset
92-94 - Jimmy 4WD Base, SLE, SLS, SLT
Do Not Gap, Gap is Preset; Engine VIN: W
Jeep
84-84 - Cherokee
Do Not Gap, Gap is Preset
85-86 - Cherokee 4WD Base, Chief, Laredo, Pioneer
Do Not Gap, Gap is Preset
85-86 - Cherokee RWD Base, Chief, Laredo, Pioneer
Do Not Gap, Gap is Preset
86-86 - Comanche 4WD Custom, X, XLS
Do Not Gap, Gap is Preset
86-86 - Comanche RWD Custom, X, XLS
Do Not Gap, Gap is Preset
84-86 - Wagoneer Base, Limited
Do Not Gap, Gap is Preset
Lincoln
80-85 - Continental Base, Givenchy, Signature, Valentino
Do Not Gap, Gap is Preset
80-83 - Mark VI Base, Bill Blass, Givenchy, Pucci, Signature
Do Not Gap, Gap is Preset
84-92 - Mark VII Base, Bill Blass, LSC, Versace
Do Not Gap, Gap is Preset
81-85 - Town Car Base, Cartier, Signature
Do Not Gap, Gap is Preset
80-80 - Versailles
Do Not Gap, Gap is Preset
Mercury
80-85 - Capri Base, Black Magic, Ghia, GS, L & more
Do Not Gap, Gap is Preset
80-93 - Cougar Base, LS, XR-7
Do Not Gap, Gap is Preset
80-86 - Grand Marquis Base, Colony Park, LS
Do Not Gap, Gap is Preset
80-85 - Marquis Base, Brougham
Do Not Gap, Gap is Preset
80-80 - Monarch
Do Not Gap, Gap is Preset
80-82 - Zephyr Base, GS, Z7
Do Not Gap, Gap is Preset
Oldsmobile
81-85 - 98 Luxury, Regency, Regency Brougham
Do Not Gap, Gap is Preset
91-94 - Bravada
Do Not Gap, Gap is Preset
85-87 - Calais Base, 500, ES, GT, Supreme
Do Not Gap, Gap is Preset
91-92 - Custom Cruiser
Do Not Gap, Gap is Preset
80-81 - Cutlass Base, Brougham, LS
Do Not Gap, Gap is Preset
80-91 - Cutlass Calais Base, GT, Hurst, S, SL
Do Not Gap, Gap is Preset
82-92 - Cutlass Ciera Base, Brougham, Cruiser LS, ES, GT & more
Do Not Gap, Gap is Preset
80-90 - Cutlass Cruiser Base, Brougham, Brougham LS, LS, RWD & more
Do Not Gap, Gap is Preset
80-87 - Cutlass Salon Base, Brougham
Do Not Gap, Gap is Preset
80-87 - Cutlass Supreme Base, 442, Brougham, LS
Do Not Gap, Gap is Preset
80-85 - Delta 88 Base, Holiday, Royale, Royale Brougham, Royale Brougham LS
Do Not Gap, Gap is Preset
80-84 - Omega Base, Brougham, ES, ESC, Sport & more
Do Not Gap, Gap is Preset
80-80 - Starfire Base, Firenza, GT, SX
Do Not Gap, Gap is Preset
81-84 - Toronado Brougham
Do Not Gap, Gap is Preset
Pontiac
82-91 - 6000 Base, LE
Do Not Gap, Gap is Preset
80-86 - Bonneville Base, Brougham, Brougham RWD, LE, Safari & more
Do Not Gap, Gap is Preset
80-81 - Catalina Base, Safari, Safari RWD
Do Not Gap, Gap is Preset
84-88 - Fiero Base, SE, Sport, Value Leader
Do Not Gap, Gap is Preset
80-92 - Firebird Base, Esprit, Formula, Formula RWD, S/E & more
Do Not Gap, Gap is Preset
85-85 - Firebird Base, S/E, Trans Am
Do Not Gap, Gap is Preset; Engine VIN: G
Do Not Gap, Gap is Preset; Engine VIN: H
87-87 - Firebird Base, Trans Am
Do Not Gap, Gap is Preset; Engine VIN: H
80-91 - Grand Am Base, LE, SE, Value Leader
Do Not Gap, Gap is Preset
80-81 - Grand LeMans Base, RWD, Safari, Safari RWD
Do Not Gap, Gap is Preset
80-87 - Grand Prix Base, Brougham, LE, LJ, SJ
Do Not Gap, Gap is Preset
80-81 - LeMans Base, RWD, Safari, Safari RWD
Do Not Gap, Gap is Preset
83-86 - Parisienne Base, Brougham
Do Not Gap, Gap is Preset
80-84 - Phoenix Base, LE, LJ
Do Not Gap, Gap is Preset
80-80 - Sunbird
Do Not Gap, Gap is Preset