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Chevrolet S10 Blazer Ignition Coil

17 items

Replace a weak ignition coil before misfires, rough starts, or poor acceleration turn into bigger engine trouble. Find coils for everyday repair and maintenance.

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Spectra Premium C-631 Ignition CoilSpectra Premium C-631 Ignition Coil
Spectra PremiumPart # C-631
Spectra Premium C-631 Ignition Coil
52 Reviews
$33.99
Quantity Less than 3
Edit ZIP code
3-year warranty
90 days free return
Fits 1982-1982 American Motors Concord, 1982-1982 American Motors Eagle, 1982-1982 American Motors Spirit, 1983-1983 American Motors Eagle, 1975-1975 Buick Apollo, 1981-1981 Buick Skylark, 1982-1982 Buick Skylark, 1982-1984 Buick Century, 1982-1984 Buick Century, 1982-1984 Buick Skyhawk, 1983-1984 Buick Skylark, 1982-1984 Cadillac Cimarron, 1975-1977 Checker Marathon, 1975-1975 Chevrolet P10, 1975-1976 Chevrolet C30, 1975-1976 Chevrolet K10, 1975-1976 Chevrolet K20, 1975-1977 Chevrolet C10, 1975-1977 Chevrolet C10, 1975-1977 Chevrolet C10 Suburban
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
C-631, CDR35, U1176, J8134003, DR35, DR35T, 8B1, 25197, 
...View more
item #1000Z50N
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Denso 673-7100 Ignition Coil
DensoPart # 673-7100
Denso 673-7100 Ignition Coil
4.523 Reviews
$75.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1996-1996 Buick Commercial Chassis, 1996-1996 Buick Roadmaster, 1996-1996 Cadillac Commercial Chassis, 1996-1996 Cadillac Fleetwood, 1999-2000 Cadillac Escalade, 1996-1996 Chevrolet Caprice, 1996-1996 Chevrolet Corvette, 1996-1996 Chevrolet Impala, 1996-1997 Chevrolet Camaro, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet K1500, 1996-1998 Chevrolet K1500, 1996-1998 Chevrolet K1500, 1996-1999 Chevrolet C1500, 1996-1999 Chevrolet C1500, 1996-1999 Chevrolet C1500 Suburban, 1996-1999 Chevrolet C2500, 1996-1999 Chevrolet C2500 Suburban, 1996-1999 Chevrolet C2500 Suburban, 1996-1999 Chevrolet K1500 Suburban
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-7100, C-594, 8-10489-421-0, IC58, U1094, D577, CE20003, 920-1006, 
...View more
item #1002H89N
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Spectra Premium C-611 Ignition Coil
Spectra PremiumPart # C-611
Spectra Premium C-611 Ignition Coil
52 Reviews
$40.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1995-1996 AM General Hummer, 1993-1993 Asuna GT, 1993-1993 Asuna SE, 1993-1993 Asuna Sunfire, 1985-1985 Buick Skylark, 1985-1985 Buick Somerset Regal, 1985-1986 Buick Century, 1985-1986 Buick Century, 1985-1988 Buick Skyhawk, 1986-1986 Buick Skylark, 1986-1986 Buick Somerset, 1991-1995 Buick Commercial Chassis, 1991-1995 Buick Roadmaster, 1985-1986 Cadillac Cimarron, 1990-1990 Cadillac Brougham, 1991-1992 Cadillac Brougham, 1992-1993 Cadillac Commercial Chassis, 1993-1995 Cadillac Fleetwood, 1994-1995 Cadillac Commercial Chassis, 1985-1985 Chevrolet Astro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
C-611, CDR37, CUF179, DR37T, DR37, D503A, D573, 8124983340, 
...View more
item #1000Z4E2
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Walker Products 920-1004 Ignition Coil
Walker ProductsPart # 920-1004
Walker Products 920-1004 Ignition Coil
4.325 Reviews
$30.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1995-1996 AM General Hummer, 1993-1993 Asuna GT, 1993-1993 Asuna SE, 1985-1985 Buick Skylark, 1985-1985 Buick Somerset Regal, 1985-1986 Buick Century, 1985-1986 Buick Century, 1985-1988 Buick Skyhawk, 1986-1986 Buick Skylark, 1986-1986 Buick Somerset, 1991-1995 Buick Commercial Chassis, 1991-1995 Buick Roadmaster, 1985-1986 Cadillac Cimarron, 1990-1990 Cadillac Brougham, 1991-1992 Cadillac Brougham, 1992-1993 Cadillac Commercial Chassis, 1993-1995 Cadillac Fleetwood, 1994-1995 Cadillac Commercial Chassis, 1985-1985 Chevrolet Astro, 1985-1985 Chevrolet Celebrity
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
920-1004, D-535, IC-29, DC-61, 1115315, 1115316, 1115317, 1115324, 
...View more
item #1001L25A
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Spectra Premium C-594 Ignition Coil
Spectra PremiumPart # C-594
Spectra Premium C-594 Ignition Coil
52 Reviews
$48.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1996-1996 Buick Commercial Chassis, 1996-1996 Buick Roadmaster, 1996-1996 Cadillac Commercial Chassis, 1996-1996 Cadillac Fleetwood, 1999-2000 Cadillac Escalade, 1995-1995 Chevrolet S10, 1995-1999 Chevrolet Silverado, 1996-1996 Chevrolet Caprice, 1996-1996 Chevrolet Corvette, 1996-1996 Chevrolet G30, 1996-1996 Chevrolet Impala, 1996-1996 Chevrolet W3500 Tiltmaster, 1996-1997 Chevrolet Camaro, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet C2500, 1996-1998 Chevrolet K1500, 1996-1998 Chevrolet K1500, 1996-1998 Chevrolet K1500, 1996-1999 Chevrolet C1500, 1996-1999 Chevrolet C1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
C-594, CDR49, DR49T, DR49, D577, 8104894210, 50007, E208, 
...View more
item #1000Z2CW
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Walker Products 920-1001 Ignition Coil
Walker ProductsPart # 920-1001
Walker Products 920-1001 Ignition Coil
4.325 Reviews
$37.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1960-1960 American Motors Rambler, 1960-1961 American Motors Rebel, 1960-1963 American Motors American, 1961-1966 American Motors Classic, 1964-1964 American Motors American, 1965-1967 American Motors Marlin, 1965-1968 American Motors American, 1966-1966 American Motors Rogue, 1966-1970 American Motors Rebel, 1968-1970 American Motors AMX, 1968-1974 American Motors Javelin, 1969-1969 American Motors Rambler, 1970-1976 American Motors Gremlin, 1970-1976 American Motors Hornet, 1971-1971 American Motors Ambassador, 1971-1971 American Motors Ambassador, 1971-1971 American Motors Ambassador, 1971-1977 American Motors Matador, 1972-1974 American Motors Ambassador, 1975-1976 American Motors Pacer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
920-1001, E5AZ18100, F80218100B, FE8518100, FE8718100, 30500634672, 30500634673, 30500679003, 
...View more
item #1001L1W7
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Walker Products 920-1006 Ignition Coil
Walker ProductsPart # 920-1006
Walker Products 920-1006 Ignition Coil
4.325 Reviews
$36.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1996-1996 Buick Commercial Chassis, 1996-1996 Buick Roadmaster, 1996-1996 Cadillac Commercial Chassis, 1996-1996 Cadillac Fleetwood, 1999-2000 Cadillac Escalade, 1996-1996 Chevrolet Caprice, 1996-1996 Chevrolet Corvette, 1996-1996 Chevrolet Impala, 1996-1997 Chevrolet Camaro, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet C1500 Suburban, 1996-1998 Chevrolet C2500, 1996-1998 Chevrolet Express 2500, 1996-1998 Chevrolet Express 2500, 1996-1998 Chevrolet Express 2500, 1996-1998 Chevrolet K1500, 1996-1998 Chevrolet K1500, 1996-1998 Chevrolet K1500, 1996-1999 Chevrolet C1500, 1996-1999 Chevrolet C1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
920-1006, 50007, IC-20, IC-58, D-577, 10489421, 19207138, 7B2, 
...View more
item #1001L3PH
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Walker Products 920-1083 Ignition Coil
Walker ProductsPart # 920-1083
Walker Products 920-1083 Ignition Coil
4.325 Reviews
$32.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1982-1982 American Motors Concord, 1982-1982 American Motors Spirit, 1982-1983 American Motors Eagle, 1975-1975 Buick Apollo, 1981-1981 Buick Skylark, 1982-1982 Buick Skylark, 1982-1984 Buick Century, 1982-1984 Buick Century, 1982-1984 Buick Skyhawk, 1983-1984 Buick Skylark, 1982-1984 Cadillac Cimarron, 1975-1975 Chevrolet P10, 1975-1975 Chevrolet Vega, 1975-1976 Chevrolet K10, 1975-1976 Chevrolet K20, 1975-1977 Chevrolet C10, 1975-1977 Chevrolet C10 Suburban, 1975-1977 Chevrolet C20, 1975-1977 Chevrolet C20, 1975-1977 Chevrolet C20 Suburban
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
920-1083, IC-73, J8134003, D-525, IC-22, DC-59HS, 8134003, 12498046, 
...View more
item #1001L3TG
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Delphi CE20003 Ignition Coil
DelphiPart # CE20003
Delphi CE20003 Ignition Coil
4.538 Reviews
$71.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1996-1996 Buick Commercial Chassis, 1996-1996 Buick Roadmaster, 1996-1996 Cadillac Commercial Chassis, 1996-1996 Cadillac Fleetwood, 1999-2000 Cadillac Escalade, 1995-1999 Chevrolet Silverado, 1996-1996 Chevrolet Caprice, 1996-1996 Chevrolet Corvette, 1996-1996 Chevrolet Impala, 1996-1996 Chevrolet W4500 Tiltmaster, 1996-1997 Chevrolet Camaro, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet C1500, 1996-1998 Chevrolet C2500, 1996-1998 Chevrolet Express 2500, 1996-1998 Chevrolet Express 2500, 1996-1998 Chevrolet Express 2500, 1996-1998 Chevrolet K1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
CE20003, 5C1062, 26327, C1098, D577, CLS1047, 920-1006, 7B2, 
...View more
item #1001VUSC
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1 pc Ignition Coil | 3-Pin Terminal | A-Premium APIC1493
A-Premium®Part # APIC1493
1 pc Ignition Coil | 3-Pin Terminal | A-Premium APIC1493
4.6543 Reviews
$31.99
Quantity Less than 3
Edit ZIP code
3-year warranty
90 days free return
Fits 2001 - 2002 GMC Savana 2500, 1996 - 2000 Chevrolet K3500, 2001 - 2002 Chevrolet Silverado 2500, 1998 - 2002 GMC W4500 Forward, 1996 - 1999 GMC K1500, 2001 - 2001 GMC Savana 3500, 1996 - 2002 Chevrolet Suburban 1500, 2001 - 2002 GMC Savana 2500, 1996 - 1999 Chevrolet K1500 Suburban, 1996 - 1999 GMC C2500 Suburban, 1996 - 1996 Chevrolet C2500, 1996 - 2000 GMC C2500, 1995 - 1995 Chevrolet S10, 1996 - 1996 Chevrolet Express 3500, 1996 - 2000 Chevrolet K2500, 1996 - 2005 GMC Jimmy, 1999 - 2006 Chevrolet Silverado 1500, 1996 - 2005 GMC Safari, 1996 - 1996 GMC P3500, 1996 - 1996 GMC Savana 3500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Item LocatedUnited States
ColorYellow
ConditionNew
item #1015HE7L
Note
Package Included: 1x Yellow Ignition Coil.
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1 pc Ignition Coil | 3-Pin Terminal | A-Premium APIC1373
A-Premium®Part # APIC1373
1 pc Ignition Coil | 3-Pin Terminal | A-Premium APIC1373
4.6543 Reviews
$31.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 1996 - 2000 GMC Savana 2500, 2001 - 2002 Chevrolet Silverado 2500, 1996 - 1998 GMC C1500, 1998 - 2002 GMC W4500 Forward, 1996 - 1999 GMC K2500 Suburban, 2001 - 2001 GMC Savana 3500, 1998 - 2000 Chevrolet C2500, 1996 - 2002 Chevrolet Suburban 1500, 1996 - 1999 Chevrolet K1500 Suburban, 2002 - 2005 Workhorse FasTrack FT1601, 1996 - 1996 Chevrolet C2500, 2001 - 2002 GMC Savana 2500, 1996 - 1996 Chevrolet C2500, 1995 - 1995 Chevrolet S10, 1996 - 1996 Chevrolet Express 3500, 1996 - 2005 GMC Jimmy, 1999 - 2006 Chevrolet Silverado 1500, 1996 - 2005 GMC Safari, 1996 - 2000 Chevrolet C3500HD, 1996 - 1996 Chevrolet C2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Item LocatedUnited States
ColorBlue
ConditionNew
item #1015HCZS
Note
Package Included: 1x Blue Ignition Coil.
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1 pc Ignition Coil | 3-Blade Terminal | A-Premium APIC0129
A-Premium®Part # APIC0129
1 pc Ignition Coil | 3-Blade Terminal | A-Premium APIC0129
4.6543 Reviews
$29.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1996 - 1999 Chevrolet K1500, 1996 - 1999 Chevrolet K2500 Suburban, 1996 - 2005 Chevrolet Astro, 1996 - 2000 Chevrolet K3500, 1996 - 1999 GMC C2500 Suburban, 1996 - 1996 Chevrolet Caprice, 2000 - 2000 Chevrolet Sonora, 1996 - 2002 Chevrolet Express 1500, 1996 - 1996 Chevrolet Corvette, 1996 - 2000 GMC C3500, 1996 - 2000 Chevrolet C2500, 1996 - 1999 Chevrolet C1500, 1999 - 1999 Chevrolet B7, 2001 - 2002 Chevrolet Silverado 2500, 1999 - 1999 GMC P3500, 1999 - 2006 Chevrolet Silverado 1500, 1996 - 2005 GMC Savana 2500, 1996 - 2005 Chevrolet Express 2500, 1996 - 2000 Chevrolet C3500, 1996 - 1998 GMC C1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1002QL2D
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1 pc Ignition Coil | 3-Blade Terminal | Aisin ESCAZ-00131
AisinPart # ESCAZ-00131
1 pc Ignition Coil | 3-Blade Terminal | Aisin ESCAZ-00131
4.6543 Reviews
$26.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 1996 - 2000 Chevrolet K2500, 1996 - 2000 GMC C3500, 1996 - 1999 Chevrolet K1500, 1996 - 2002 Chevrolet W3500 Tiltmaster, 2001 - 2002 Chevrolet Silverado 2500, 1996 - 1999 Chevrolet C1500, 1996 - 2000 Chevrolet C3500, 2000 - 2000 Chevrolet Sonora, 1997 - 1999 Chevrolet C2500 Suburban, 1996 - 1999 GMC C1500 Suburban, 1996 - 1998 Chevrolet C2500, 1999 - 2000 Cadillac Escalade, 1999 - 1999 GMC P3500, 1996 - 2002 Chevrolet Express 1500, 1996 - 2005 Chevrolet Astro, 1998 - 1998 GMC K2500, 1996 - 2000 Chevrolet C2500, 1996 - 2000 GMC C2500, 1996 - 2005 Chevrolet Express 2500, 1999 - 2006 Chevrolet Silverado 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
10489421, 19207138, 19418996
ConditionNew
item #10186LPE
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Spectra Premium C-624 Ignition Coil
Spectra PremiumPart # C-624
Spectra Premium C-624 Ignition Coil
52 Reviews
$27.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2002-2002 Alfa Romeo 147, 1958-1958 American Motors Ambassador, 1958-1958 American Motors American, 1958-1958 American Motors Rambler, 1958-1958 American Motors Rebel, 1959-1960 American Motors American, 1959-1960 American Motors Rambler, 1959-1961 American Motors Rebel, 1959-1964 American Motors Ambassador, 1961-1962 American Motors Classic, 1963-1964 American Motors Classic, 1965-1966 American Motors Ambassador, 1965-1966 American Motors Classic, 1965-1967 American Motors Marlin, 1965-1968 American Motors American, 1966-1966 American Motors Ambassador, 1966-1966 American Motors Rogue, 1966-1967 American Motors Ambassador, 1966-1970 American Motors Rebel, 1967-1967 American Motors Ambassador
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
C-624, CUC12, UC12, UC12T, UC12X, 26189, U505, E552C, 
...View more
item #1000Z61S
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1 pc Ignition Coil | 3-Pin Terminal | A-Premium APIC1460
A-Premium®Part # APIC1460
1 pc Ignition Coil | 3-Pin Terminal | A-Premium APIC1460
4.6543 Reviews
$31.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1996 - 2000 GMC K2500, 1996 - 1999 GMC C1500 Suburban, 1996 - 2005 GMC Safari, 2001 - 2002 Chevrolet Silverado 2500, 1996 - 2000 GMC C3500, 1996 - 1998 GMC C1500, 1998 - 2002 GMC W4500 Forward, 1997 - 1999 Chevrolet C2500 Suburban, 2001 - 2001 GMC Savana 3500, 1996 - 2002 Chevrolet Suburban 1500, 2002 - 2005 Workhorse FasTrack FT1601, 1996 - 1996 Chevrolet C2500, 1996 - 1999 Chevrolet K2500 Suburban, 2001 - 2002 GMC Savana 2500, 1996 - 1996 Chevrolet C2500, 2001 - 2001 Chevrolet Express 2500, 1995 - 1995 Chevrolet S10, 1998 - 2000 Chevrolet C2500, 1996 - 1996 Chevrolet Express 3500, 1996 - 1999 Chevrolet C1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Item LocatedUnited States
ColorRed
ConditionNew
item #1015HHAU
Note
Please see Compatibility description for fitment information.
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1 pc Ignition Coil for 1986-1991 Chevrolet S10 Blazer | 4-Blade Terminal | A-Premium APIC0104
A-Premium®Part # APIC0104
1 pc Ignition Coil for 1986-1991 Chevrolet S10 Blazer | 4-Blade Terminal | A-Premium APIC0104
4.6543 Reviews
$29.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1002PQ5U
Show less
1 pc Ignition Coil for 1987-1991 Chevrolet S10 Blazer | 4-Blade Terminal | Aisin ESCAZ-00094
AisinPart # ESCAZ-00094
1 pc Ignition Coil for 1987-1991 Chevrolet S10 Blazer | 4-Blade Terminal | Aisin ESCAZ-00094
4.6543 Reviews
$23.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Fits Chevrolet S10 Blazer: 1987 1988 1989 1990 1991
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
10477208, 10477944, 1115315, 1115317, 1115466, 1115468, 12498334, 19418995, 
...View more
ConditionNew
item #101876S1
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Premium Automotive Ignition Coils | Restore Engine Power & Fuel Efficiency

Are you experiencing rough idling, engine misfires, or a sudden drop in fuel economy? It might be time for an ignition coil replacement. As a heart of your vehicle's ignition system, a reliable automotive ignition coil transforms your battery's low voltage into the thousands of volts required to create an electric spark in the spark plugs, keeping your engine running smoothly.

At A-Premium, we provide OE-matching car ignition coil solutions designed to eliminate misfires, restore lost horsepower, and ensure reliable cold starts in any weather condition.

Anatomy of an A-Premium engine ignition coil

Anatomy of an A-Premium Engine Ignition Coil

To understand what makes a high-performance engine ignition coil, let’s look inside its core engineering:

  1. Integrated Driving Circuit: Features a compact, smart-integrated electronic chip at the top of the coil to ensure precise ignition timing and robust thermal resistance.
  2. Superior Quality Components & Materials: Wrapped with high-grade copper wire and premium epoxy resin insulation to prevent voltage leaks and withstand extreme under-hood heat.
  3. Rigorously Tested & Inspected: 100% factory stress-tested against thermal shock and vibration to guarantee long-lasting durability.
  4. Diagonal Windings Technology: Eliminates heavy, sectioned bobbins through advanced space-saving diagonal winding, significantly reducing the overall size and weight while maximizing energy output.

Our Advantages: Built for Real-World Driving Scenarios

Our automotive ignition coil lineup is engineered to solve everyday driving pains:

  • The Daily Commute (Stop-and-Go Traffic): Misfires often happen when idling at red lights. Our coils deliver stable, continuous voltage output, eliminating rough idles and ensuring seamless acceleration.
  • Extreme Weather Performance: Cheap coils crack under freezing winter temperatures or intense summer engine heat. Our high-dielectric epoxy coatings prevent micro-cracks, ensuring your engine fires up instantly on the first crank.
  • Fuel & Emission Savings: A weak spark leads to unburnt fuel. Upgrading your worn car ignition coil ensures complete combustion, optimizing your MPG and helping you pass emissions tests effortlessly.

Smart Buyer’s Guide: How to Choose the Best Ignition Coil

Navigating the market for an engine ignition coil can be confusing. Here is what smart buyers look for to get the perfect match:

1. Matching by Vehicle Make & Fitment (The #1 Priority)

Ignition systems are highly sensitive. A generic coil will cause error codes. Most users search and filter by their vehicle’s specific Year, Make, and Model, such as Ford EcoBoost, Honda VTEC, or Toyota VVT-i systems. Always use our fitment selector at the top of the page to find the exact OEM specification for your car.

2. When to Buy an Ignition Coil & Spark Plug Kit? (The Smart Money Move)

Should you buy them together? 90% of mechanics recommend it.

  • The Reason: A worn, old spark plug has a wider gap, which forces the engine ignition coil to work twice as hard to bridge that gap. This extra workload overheats the coil and burns it out prematurely.
  • The Strategy: If your vehicle has crossed 80,000 miles and you are doing an ignition coil replacement, always buy a complete coil and spark plug kit. It saves you from tearing down the engine twice and protects your new investment.

Replacement Checklist: When to Replace vs. When to Keep

Not every engine hiccup requires a new coil. Use this quick checklist to decide your next move:

Time to Replace if:

  • You have a confirmed OBD-II trouble code between P0300 to P0308, indicating a specific cylinder misfire.
  • The plastic housing of the coil shows visible hairline cracks, melting, or burning.
  • Your vehicle has passed 100,000 miles, as ignition coils are wear items and generally degrade after this milestone.

Do NOT Replace Yet if:

  • Your car won't crank at all. This is usually a dead battery or starter motor issue, not the ignition coil.
  • You have a misfire code but haven't checked for oil leaks. Often, a leaking valve cover gasket floods the spark plug well with oil, causing a short circuit. Simply cleaning the oil and replacing the gasket might fix the issue without needing a new coil.

Frequently Asked Questions (FAQ)

Can I replace just one faulty ignition coil, or should I replace them all at once?

If your vehicle has low mileage, replacing just the single failed car ignition coil is perfectly fine. However, if your car has over 80,000 miles, all the coils have experienced the same amount of heat and stress. When one fails, the others are usually close behind. Replacing the whole set at once ensures consistent engine balance and saves on future labor costs.

What are the most common symptoms of a failing engine ignition coil?

The most prominent signs include a flashing Check Engine Light, sudden engine shaking, especially at idle or under load, poor fuel economy, backfiring, and a noticeable hesitation or jerking when you step on the gas pedal.

How long does a typical automotive ignition coil last?

High-quality OEM-grade ignition coils are built to last between 80,000 to 100,000 miles. However, exposure to excessive engine vibration, oil leaks from a failing valve cover gasket, or neglected, worn-out spark plugs can drastically shorten their lifespan.

Will changing my ignition coils improve my gas mileage?

Yes. If your current coils are weak or failing, they create incomplete combustion in the cylinders, meaning your engine is literally throwing away unburnt fuel through the exhaust. Performing an ignition coil replacement restores 100% combustion efficiency, bringing your fuel economy back to factory-fresh levels.

Is it safe to drive with a misfiring ignition coil?

No, you should avoid it. Driving with a failed ignition coil means unburnt raw fuel is entering your exhaust system. This fuel will quickly ignite inside your catalytic converter, overheating it and melting its internal structure. A catalytic converter replacement is significantly more expensive than a simple ignition coil swap.