GMC C25/C2500 Suburban Spark Plug

BOSCH REGULAR CLASS SUPER PLUS SPARK PLUG

Bosch Regular Class Super Plus Spark Plug has a heavy duty yttrium enhanced copper core center electrode for superior reliability and increased resistance to spark erosion.

Specifications:

• 14 mm thread size
• 11.2 mm reach
• 16 mm hex size
• 0.9 mm gap
• Tapered seat style
• Interference suppression resistor
• Yttrium enhanced copper core center electrode
• Tapered V-profile nickel ground electrode
• Removable terminal nut
• Heat range 9

Features:

• Tapered V-profile nickel ground electrode provides improved starting in cold weather and increased fuel ignitibility
• Metal glass fused resistor allows for maximum interference suppression while the ribbed insulator design prevents misfires due to current leakage

Fits the following 1970-1974 GMC C25/C2500 Suburban submodels:

• 1974-1974: Base; 8 Cyl 7.4L;
• 1972-1974: Base; 8 Cyl 5.7L;

• 1970-1974: Base; 6 Cyl 4.8L;

• 1972-1973: Base; 8 Cyl 5.0L;

Fits 2 more submodels. (Show all) Show less info

DENSO REGULAR CLASS TRADITIONAL SPARK PLUG

Denso's Regular Class Traditional Spark Plugs guarantee the quality of the product they produce because every component that leaves their factories has been designed with precision, manufactured to the strictest OE standards and subjected to rigorous safety and performance tests.

Specification:

• 14 mm thread size
• 19 mm reach
• 0.81 in. hex size
• 0.02 in. gap size
• Gasket seat style
• Resistor plug type
• U-groove ground electrodes
• Removable terminal
• Fully projected tip
• Heat range 16

Features:

• Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures
• Five-rib design prevents flashover while decreasing voltage loss
• Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
• Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
• Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles

Fits the following 1968-1973 GMC C25/C2500 Suburban submodels:

• 1973-1973: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN X"
• 1971-1971: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN H"

• 1971-1971: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN P"

• 1970-1970: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN A"

• 1970-1970: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN B"

• 1969-1969: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN U"

• 1968-1969: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN P"

Fits 5 more submodels. (Show all) Show less info

NGK GR4 V-POWER SERIES SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread, 19 mm reach, 20.6 mm hex size, gasket seat, resistor, solid terminal, projected tip, V-grooved centered electrode, 1.02 mm gap, heat range 4; Features unique V-power design that directs the spark to the edge of the electrode where it develops more rapidly; Increases ignitability even in lean burn conditions and lowers ignition system voltage requirements; Corrugated ribs prevent flashover and purest alumina silicate in its ceramic insulator gives greater strength and better heat transfer; Copper cored and triple sealed to further aid in heat removal and prevent interior leakage; Trivalent metal plating has superior anti-corrosion and anti-seizing properties; Increases fuel economy and lower emissions; A highly durable spark plug against electrical and chemical wear.

Fits the following 1968-1969 GMC C25/C2500 Suburban submodels:

• 1968-1969: Base; 6 Cyl 4.1L;

AC DELCO RAPIDFIRE PERFORMANCE PLATINUM SPARK PLUG, SOLD INDIVIDUALLY

AC Delco Rapidfire Performance Platinum Spark Plugs offer longer life and improved efficiency over time. It fits engines that run conventional plugs, as well as newer vehicles that require platinum plugs.

Features:

• Constructed from top quality materials to help the engine run clean and longer
• Copper core center electrode for improved heat transfer to the tip
• Engineered to high standards and tested under extreme conditions to exceed OE specifications

Fits the following 1968-1969 GMC C25/C2500 Suburban submodels:

• 1969-1969: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated"
• 1969-1969: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated, VIN S"

• 1969-1969: Base; 8 Cyl 6.5L; "GAS, CARB, Naturally Aspirated, VIN Y"

• 1968-1969: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN P"

Fits 2 more submodels. (Show all) Show less info

MOTORCRAFT SUPPRESSOR SPARK PLUG, SINGLE PLATINUM, SOLD INDIVIDUALLY

0.04 in. gap size, alternative plug; Delivers maximum voltage to the spark plug while maximizing performance and increases engine life; Resists corrosion and abrasion; Reduces the chance of misfire.

Fits the following 1970-1971 GMC C25/C2500 Suburban submodels:

• 1971-1971: Base; 8 Cyl 5.0L;
• 1971-1971: Base; 8 Cyl 5.7L;

• 1970-1971: Base; 6 Cyl 4.1L;

• 1970-1971: Base; 6 Cyl 4.8L;

Fits 2 more submodels. (Show all) Show less info

PULSTAR PLATINUM PULSE SPARK PLUG, SOLD INDIVIDUALLY

Pulstar Pulse Spark Plug contains integrated electrical capacitor that focuses on the energy of the plug. Its electrical energy delivers the fuel mixture far beyond the typical conventional spark plugs and produces not only better fuel efficiency, but also increased torque and horsepower.

Specifications:

• 14 mm thread size
• 11.6 mm reach
• 16 mm hex size
• 1.14 mm gap
• 0.9 mm platinum tipped center electrode with copper core
• Tapered seat
• Resistor
• Nickel alloy ground electrode

Features:

• Latest Eco-Friendly ignition technology
• Provides more horsepower, livelier throttle response, and up to 10 percent better fuel economy than conventional spark plugs
• Allows more efficient burning of and generates a much larger spark than that of ordinary spark plugs
• Reduces carbon dioxide emissions and provides cleaner exhaust through more efficient combustion
• Uses an internal circuit that delivers up to 1,000,000 watts of peak power that increases peak spark current by up to 20,000 times that of a traditional spark plug

Fits the following 1970-1974 GMC C25/C2500 Suburban submodels:

• 1974-1974: Base; 6 Cyl 4.8L; "LPG, CARB, Naturally Aspirated, VIN S"
• 1974-1974: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN V"

• 1974-1974: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN Y"

• 1974-1974: Base; 8 Cyl 5.7L; "LPG, CARB, Naturally Aspirated, VIN W"

• 1974-1974: Base; 8 Cyl 7.4L; "GAS, CARB, Naturally Aspirated, VIN L"

• 1974-1974: Base; 8 Cyl 7.4L; "GAS, CARB, Naturally Aspirated, VIN Z"

• 1973-1974: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN Q"

• 1973-1974: Base; 6 Cyl 4.1L; "LPG, CARB, Naturally Aspirated, VIN Q"

• 1972-1974: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated, VIN T"

• 1971-1974: Base; 8 Cyl 5.7L; "LPG, CARB, Naturally Aspirated"

• 1972-1972: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN D"

• 1972-1972: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN F"

• 1972-1972: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN H"

• 1972-1972: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN J"

• 1972-1972: Base; 8 Cyl 6.6L; "GAS, CARB, Naturally Aspirated, VIN U"

• 1971-1972: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN C"

• 1971-1972: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN L"

• 1971-1972: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN E"

• 1970-1972: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated, VIN S"

• 1970-1972: Base; 8 Cyl 6.6L; "GAS, CARB, Naturally Aspirated, VIN E"

• 1971-1971: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN H"

• 1971-1971: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN P"

• 1971-1971: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN A"

• 1971-1971: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN B"

• 1971-1971: Base; 8 Cyl 6.6L; "GAS, CARB, Naturally Aspirated, VIN K"

• 1970-1971: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN N"

• 1970-1971: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN S"

• 1970-1971: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated"

Fits 26 more submodels. (Show all) Show less info

ACCEL U-GROOVE PERFORMANCE SPARK PLUGS, SET OF 8

Accel U-Groove Spark Plugs are constructed with a highly purified Alumina insulator that prevents arcing at plug boot and provides superior strength and thermal conductivity. Copper-glass seal bonds insulator to electrode for a gas-tight seal, and copper-core center electrode that comes with nickel chrome sheel for superior electrical conductivity and maximum heat dissipation.

Specifications:

• Resistor plug type

Features:

• Electric heat seal ensures stable heat range for uniform performance
• Machine rolled threads guarantee trouble free installation and removal, protecting the expensive cylinder heads
• Unique U-groove ground electrode developed to meet the demand for improved ignitability and increased fuel combustion resulting in less flame dissipation
• Grooves the flame to grow and create a larger flame front for a more complete combustion even in the case of lean air-fuel mixture
• Produces greater firing energy without increasing spark plug gap and larger spark nucleus that stimulates faster combustion
• Provides an increase in performance with improved throttle response, greater fuel efficiency, and reduced emissions

Fits the following 1971-1971 GMC C25/C2500 Suburban submodels:

• 1971-1971: Base; 8 Cyl 5.0L;
• 1971-1971: Base; 8 Cyl 5.7L; "VIN B"

• 1971-1971: Base; 8 Cyl 5.7L; "VIN E"

• 1971-1971: Base; 8 Cyl 6.6L; "VIN E"

Fits 2 more submodels. (Show all) Show less info

CHAMPION SINGLE PLATINUM POWER PLUG, SOLD INDIVIDUALLY

Champion Single Platinum Power Plugs reduce and maintain gap growth and proper gap. The voltage needed to fire them remains consistent, reducing the chance of misfire.

Specifications:

• 14 mm thread diameter
• V-trimmed ground electrode
• Tapered seat
• Projected tip

Features:

• Center and side electrodes are tapered for performance while platinum tip on center electrode guarantees extended plug life

Fits the following 1970-1974 GMC C25/C2500 Suburban submodels:

• 1974-1974: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN V"
• 1974-1974: Base; 8 Cyl 7.4L; "GAS, CARB, Naturally Aspirated, VIN Z"

• 1973-1974: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN Q"

• 1973-1974: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated, VIN T"

• 1973-1974: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN Y"

• 1973-1973: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN X"

• 1973-1973: Base; 8 Cyl 5.7L; "LPG, CARB, Naturally Aspirated, VIN W"

• 1972-1972: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN D"

• 1972-1972: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN F"

• 1972-1972: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN H"

• 1970-1972: Base; 6 Cyl 4.8L; "GAS, CARB, Naturally Aspirated, VIN S"

• 1970-1972: Base; 8 Cyl 6.6L; "GAS, CARB, Naturally Aspirated, VIN E"

• 1971-1971: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN C"

• 1971-1971: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN L"

• 1971-1971: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN H"

• 1971-1971: Base; 8 Cyl 5.0L; "GAS, CARB, Naturally Aspirated, VIN P"

• 1971-1971: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN B"

• 1971-1971: Base; 8 Cyl 5.7L; "GAS, CARB, Naturally Aspirated, VIN E"

• 1970-1970: Base; 6 Cyl 4.1L; "GAS, CARB, Naturally Aspirated, VIN N"

Fits 17 more submodels. (Show all) Show less info

E3 DIAMONDFIRE SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread size, 19 mm reach, 0.81 in. hex size, gasket seat, resistor, 1.016 mm non-adjustable gap size, copper core electrode material, nickel alloy electrode tip material, projected insulator type; Guaranteed to provide more power while using less fuel, quicker starts and less fouling than competitive standard spark plugs.

Fits the following 1968-1969 GMC C25/C2500 Suburban submodels:

• 1969-1969: Base; 8 Cyl 6.5L;
• 1968-1969: Base; 6 Cyl 4.1L;

• 1968-1969: Base; 6 Cyl 5.0L;

Fits 1 more submodels. (Show all) Show less info