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ACDelco 41-821

ACDelco SPARK PLUG PKG

065-41-821

Ships on Monday
Save $25 off $250, $50 off $500, $100 off $1,000. Promo Code: RACE2SAVE exclusions apply

$12.99
ACDelco SPARK PLUG PKG $12.99
Out of stock
QTY
  • Platinum Spark Plug
  • Specifications:

    Center Electrode Tip Material
    Platinum
    Ground Electrode Quantity
    1
    Seat Type
    Tapered
    Ground Electrode Tip Design
    Single Prong Electrode
    Ground Configuration
    Single
    Ground Electrode Core Material
    Nickel Alloy
    Center Electrode Core Material
    Copper
    Hex Size
    16mm
    Reach (in.)
    0.44
    Reach (mm)
    11.20
    Approximate Resistor Value
    3-10k ohms
    Gap Size (in.)
    0.041
    Gap Size (mm)
    1.05
    Resistor Plug
    Yes
    Thread Size
    14mm
    Pack Of
    1
    Manufacturer's Part Number:
    41-821

    Does ACDelco 41-821 fit your vehicle?

    Narrow Results
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    1975  CHEVROLET G30 VAN

    • EngineType: ALL
    • SubModel: ALL

    1975  CHEVROLET K10 SUBURBAN

    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975  CHEVROLET K5 BLAZER

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975  GMC C25 SUBURBAN

    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1971  CHEVROLET C10 PICKUP

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975  GMC C25 SUBURBAN

    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1971  CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC C15 SUBURBAN

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979  GMC K3500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  GMC G25/G2500 VAN

    • EngineType: ALL
    • SubModel: VANDURA

    1975-1976  CHEVROLET MALIBU

    • Liter: 6.6
    • SubModel: CLASSIC ESTATE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971  CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • SubModel: GREENBRIER
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC K1500 SUBURBAN

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971  GMC G35/G3500 VAN

    • CC: 4097
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976-1978  GMC G25/G2500 VAN

    • Liter: 4.8
    • SubModel: RALLY
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1979-1980  GMC C1500 PICKUP

    • Liter: 7.4
    • SubModel: BIG TEN
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  GMC JIMMY

    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976-1978  GMC P25/P2500 VAN

    • EngineType: ALL
    • SubModel: ALL

    1968-1969  BUICK LESABRE

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  PONTIAC VENTURA

    • CC: 5733
    • Liter: 5.7
    • Aspiration: N
    • SubModel: GTO
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET G20 VAN

    • Liter: 5.7
    • SubModel: CHEVY VAN
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976  CHEVROLET P10 VAN

    • EngineType: ALL
    • SubModel: BASE

    1976-1989  GMC P35/P3500 VAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1971  CHEVROLET CHEVELLE

    • CC: 4098
    • Liter: 4.1
    • SubModel: MALIBU
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972  CHEVROLET C10 PICKUP

    • CC: 6588
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1979-1980  GMC K2500 PICKUP

    • Liter: 6.6
    • SubModel: HIGH SIERRA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971-1972  GMC G25/G2500 VAN

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1977  CHEVROLET C20 PICKUP

    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1982  BUICK LESABRE

    • Liter: 4.4
    • SubModel: LIMITED
    • CUI: 267
    • EngineType: V8 ( 4.4 L / 267 )

    1979-1980  GMC C1500 PICKUP

    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1992  PONTIAC FIREBIRD

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975  GMC K1500 PICKUP

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  FORD F-100

    • CC: 7539
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1976-1989  CHEVROLET P20 VAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1970  CHEVROLET EL CAMINO

    • CC: 7441
    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  CHEVROLET C10 PICKUP

    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982  CHEVROLET K30 PICKUP

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET K10 PICKUP

    • Liter: 6.6
    • SubModel: CHEYENNE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1978  GMC C15 SUBURBAN

    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988  CHEVROLET R30 PICKUP

    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC C25/C2500 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978  CHEVROLET K20 PICKUP

    • Liter: 4.8
    • SubModel: CHEYENNE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977  CHEVROLET C10 PICKUP

    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976  CHEVROLET G30 VAN

    • Liter: 5.7
    • SubModel: BEAUVILLE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971-1973  GMC C25/C2500 PICKUP

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1971  CHEVROLET CHEVELLE

    • CC: 5031
    • Liter: 5.0
    • SubModel: NOMAD
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1972  CHEVROLET C20 PICKUP

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  CHEVROLET K10 SUBURBAN

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1979-1980  GMC K2500 PICKUP

    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973  CHEVROLET BLAZER

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971-1973  GMC C25/C2500 SUBURBAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975  GMC C25 SUBURBAN

    • Liter: 5.7
    • SubModel: HIGH SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977  CHEVROLET C20 SUBURBAN

    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975  CHEVROLET K20 PICKUP

    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971  CHEVROLET IMPALA

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982  CHEVROLET C20 PICKUP

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC C25 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972-1973  GMC SPRINT

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC C1500 PICKUP

    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1978  CHEVROLET MALIBU

    • EngineType: ALL
    • SubModel: CLASSIC ESTATE

    1974  GMC K15/K1500 SUBURBAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC K25 PICKUP

    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1988-1992  PONTIAC FIREBIRD

    • Liter: 5.0
    • SubModel: TRANS AM
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973-1974  GMC C15/C1500 SUBURBAN

    • Liter: 7.4
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972  CHEVROLET K20 PICKUP

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977  CHEVROLET C20 PICKUP

    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974  CHEVROLET K30 PICKUP

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977  CHEVROLET C20 SUBURBAN

    • Liter: 6.6
    • SubModel: SILVERADO
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970  CHEVROLET NOVA

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1975  CHEVROLET C10 PICKUP

    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972  CHEVROLET K20 PICKUP

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975  CHEVROLET K10 PICKUP

    • Liter: 6.6
    • SubModel: SILVERADO
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1973  GMC K35/K3500 PICKUP

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1977-1978  GMC K35 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  PONTIAC VENTURA

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1992  PONTIAC FIREBIRD

    • Liter: 5.7
    • SubModel: TRANS AM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC C25/C2500 PICKUP

    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1971  GMC G35/G3500 VAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: VANDURA
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1973-1974  BUICK CENTURY

    • EngineType: ALL
    • SubModel: ALL

    1975-1978  GMC C35/C3500 PICKUP

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977  CHEVROLET K20 PICKUP

    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  PONTIAC GRAND AM

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981-1986  GMC C3500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1978  GMC G35/G3500 VAN

    • Liter: 4.8
    • SubModel: RALLY
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1979-1980  GMC K1500 PICKUP

    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1971-1973  GMC K25/K2500 SUBURBAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1974  PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: SPORT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1980  GMC C1500 PICKUP

    • Liter: 6.6
    • SubModel: BIG TEN
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971  CHEVROLET EL CAMINO

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975  CHEVROLET C20 SUBURBAN

    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  CHEVROLET C20 SUBURBAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1973-1974  CHEVROLET K20 PICKUP

    • CC: 7441
    • Liter: 7.4
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972  GMC SPRINT

    • CC: 7439
    • Liter: 7.4
    • Aspiration: N
    • SubModel: CUSTOM
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  GMC K15 SUBURBAN

    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1982  GMC K2500 SUBURBAN

    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  CHEVROLET C20 PICKUP

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970  GMC K15/K1500 PICKUP

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1972  CHEVROLET EL CAMINO

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1984  GMC C1500 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971  CHEVROLET CHEVELLE

    • CC: 4098
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )
    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.