What Does A Spark Plug Do
Spark plugs can make or break your engine’s performance. Understand how they work, how to recognize a faulty one, and get expert advice on choosing the right spark plug for better engine health.
Jul 21, 2026
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GMC Spark Plug Wire
771 itemsSpark plug wires carry high voltage from the ignition coil or distributor to the spark plugs on engines equipped with separate ignition leads. Their insulated cables and boots help keep that voltage on its intended path to the plugs.
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DensoPart # 671-6044
Spark Plug Wire Set - Denso 671-6044
51 Reviews
$36.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1975-1975 Volvo 164, 1974-1974 Buick Apollo, 1974-1974 Chevrolet G20 Van, 1974-1974 Chevrolet G30 Van, 1974-1974 Chevrolet P10 Van, 1974-1974 GMC G25/G2500 Van, 1974-1974 GMC G25/G2500 Van, 1974-1974 GMC G35/G3500 Van, 1974-1974 GMC P15/P1500 Van, 1974-1974 Volvo 164, 1973-1974 Chevrolet C10 Pickup, 1973-1974 Chevrolet C10 Suburban, 1973-1974 Chevrolet Malibu, 1973-1974 Chevrolet P20 Van, 1973-1974 Chevrolet P30 Van, 1973-1974 GMC C15/C1500 Pickup, 1973-1974 GMC C15/C1500 Suburban, 1973-1974 GMC P25/P2500 Van, 1973-1974 GMC P35/P3500 Van, 1973-1974 Oldsmobile Omega
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6044, 116, 35-6326, 6716044, 51426, GMX016, 506C, 506B,
...View moreitem #10031697
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DensoPart # 671-6059
Spark Plug Wire Set - Denso 671-6059
51 Reviews
$88.99
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3-year warranty
90 days free return
Fits 1999-2001 Chevrolet Silverado 1500, 1999-2001 GMC Sierra 1500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6059, 116061, 35-6156, 6716059, 97006, 700037, 766D, CH76158,
...View moreitem #100317SQ
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DensoPart # 671-8021
Spark Plug Wire Set - Denso 671-8021
51 Reviews
$58.99
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3-year warranty
90 days free return
Fits 1994-1997 Chevrolet P30, 1994-1997 GMC P3500, 1994-1995 Chevrolet C2500, 1994-1995 Chevrolet C2500 Suburban, 1994-1995 Chevrolet C3500, 1994-1995 Chevrolet G30, 1994-1995 Chevrolet K2500, 1994-1995 Chevrolet K2500 Suburban, 1994-1995 Chevrolet K3500, 1994-1995 GMC C2500, 1994-1995 GMC C2500 Suburban, 1994-1995 GMC C3500, 1994-1995 GMC G3500, 1994-1995 GMC K2500, 1994-1995 GMC K2500 Suburban, 1994-1995 GMC K3500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8021, 35-8119, MSW1788, 6718021, 718C, 11-870M, QW975, 118018,
...View moreitem #100316GP
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DensoPart # 671-6012
Spark Plug Wire Set - Denso 671-6012
51 Reviews
$49.99
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3-year warranty
90 days free return
Fits 1991-1994 Isuzu Pickup, 1991-1993 GMC Sonoma, 1991-1992 Isuzu Rodeo, 1989-1991 Isuzu Trooper, 1986-1986 Oldsmobile Cutlass Ciera, 1985-1993 Chevrolet S10, 1985-1990 GMC S15, 1985-1989 Chevrolet Camaro, 1985-1989 Chevrolet S10 Blazer, 1985-1989 GMC S15 Jimmy, 1985-1989 Pontiac Firebird, 1985-1986 Chevrolet Celebrity, 1985-1986 Pontiac 6000, 1985-1985 Buick Skylark, 1985-1985 Chevrolet Citation II, 1983-1986 Buick Century, 1983-1983 Oldsmobile Cutlass Ciera
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6012, 35-6110, 412, MSW1818, 6716012, IX47, 706N, 906B,
...View moreitem #1003156E
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DensoPart # 671-8171
Spark Plug Wire Set - Denso 671-8171
51 Reviews
$89.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2006-2007 Chevrolet Express 1500, 2006-2007 Chevrolet Express 2500, 2006-2007 Chevrolet Express 3500, 2006-2007 GMC Savana 1500, 2006-2007 GMC Savana 2500, 2006-2007 GMC Savana 3500, 2004-2004 GMC Envoy XL, 2003-2007 Chevrolet Express 2500, 2003-2007 Chevrolet Express 3500, 2003-2007 GMC Savana 2500, 2003-2007 GMC Savana 3500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8171, 118081, 757, 6718171, 700531, 748QQ, CH7883, 09018,
...View moreitem #1004YXVQ
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DensoPart # 671-6284
Spark Plug Wire Set - Denso 671-6284
51 Reviews
$65.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2008-2014 Chevrolet Express 1500, 2008-2013 GMC Savana 1500, 2007-2013 Chevrolet Silverado 1500, 2007-2013 GMC Sierra 1500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6284, 116082, 6716284, 700037, 746UU, 7734
item #100314PA
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DensoPart # 671-8040
Spark Plug Wire Set - Denso 671-8040
51 Reviews
$55.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1974-1974 Chevrolet Corvette, 1972-1972 Chevrolet C20 Pickup, 1971-1971 GMC G15/G1500 Van, 1971-1971 GMC G25/G2500 Van, 1971-1971 GMC G35/G3500 Van, 1970-1972 Chevrolet P20 Van, 1970-1972 Chevrolet P30 Van, 1970-1972 GMC Jimmy, 1970-1972 GMC Jimmy, 1970-1972 GMC K15/K1500 Suburban, 1970-1972 GMC P25/P2500 Van, 1970-1972 GMC P35/P3500 Van, 1970-1970 Chevrolet Bel Air, 1970-1970 Chevrolet Biscayne, 1970-1970 Chevrolet Brookwood, 1970-1970 Chevrolet Caprice, 1970-1970 Chevrolet Impala, 1970-1970 Chevrolet Kingswood, 1970-1970 Chevrolet Monte Carlo, 1970-1970 Chevrolet Monte Carlo
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8040, MSW1909, 35-8139, 6718040, 508N, 908V, 11-803M, 2X1180,
...View moreitem #100318EP
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Walker ProductsPart # 924-2049
Walker Products 924-2049 Spark Plug Wire Set
4.73 Reviews
$53.99
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3-year warranty
90 days free return
Fits 2009-2009 GMC Yukon XL 1500, 2009-2009 Saab 9-7x, 2008-2009 Buick Allure, 2008-2008 Buick LaCrosse, 2008-2008 Chevrolet Express 1500, 2008-2008 Chevrolet Express 2500, 2008-2008 Chevrolet Express 2500, 2008-2008 Chevrolet Express 3500, 2008-2008 Chevrolet Express 3500, 2008-2008 Chevrolet Silverado 1500, 2008-2008 Chevrolet Silverado 1500, 2008-2008 Chevrolet Silverado 1500, 2008-2008 Chevrolet Silverado 2500, 2008-2008 Chevrolet Silverado 3500 HD, 2008-2008 GMC Savana 1500, 2008-2008 GMC Savana 2500, 2008-2008 GMC Savana 2500, 2008-2008 GMC Savana 3500, 2008-2008 GMC Savana 3500, 2008-2008 GMC Sierra 1500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-2049, 35-8346, 3162, 9647, 8HY3162, 27881, L-4347, CB-294,
...View moreitem #1001PU1U
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Walker ProductsPart # 924-1552
Walker Products 924-1552 Spark Plug Wire Set
4.73 Reviews
$66.99
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3-year warranty
90 days free return
Fits 2019-2019 Ford Fiesta, 2018-2019 Ford Fiesta, 2018-2019 Ford Fiesta, 2018-2018 Ford Fiesta, 2014-2015 Ford Fiesta, 2011-2013 Ford Fiesta, 2011-2011 Chevrolet Impala, 2010-2013 Chevrolet Express Cargo, 2010-2010 Chevrolet Impala, 2009-2011 Buick Lucerne, 2009-2010 Volkswagen Routan, 2008-2014 Chevrolet Express 1500, 2008-2014 GMC Savana 1500, 2008-2010 Chrysler Town & Country, 2008-2010 Chrysler Town & Country, 2008-2010 Dodge Grand Caravan, 2008-2010 Dodge Grand Caravan, 2008-2009 Buick Allure, 2008-2009 Chevrolet Equinox, 2008-2009 Pontiac Torrent
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1552
item #1001PRCV
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Walker ProductsPart # 924-1829A
Walker Products 924-1829A Spark Plug Wire Set
4.73 Reviews
$48.99
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3-year warranty
90 days free return
Fits 2022-2022 Cadillac CT5, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 GMC Sierra 1500 Limited, 2022-2022 GMC Sierra 1500 Limited, 2021-2022 Cadillac Escalade, 2021-2022 Cadillac Escalade ESV, 2021-2022 Chevrolet Express 2500, 2021-2022 Chevrolet Express 3500, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Tahoe, 2021-2022 Chevrolet Tahoe, 2021-2022 GMC Savana 2500, 2021-2022 GMC Savana 3500, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon XL, 2021-2022 GMC Yukon XL, 2020-2022 Chevrolet Silverado 2500 HD
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1829A, 35-8158, 35-8157, 3147, 9646, 8HY-3147, 9835, OES835,
...View moreitem #1001PS4S
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Walker ProductsPart # 924-6001
Walker Products 924-6001 Spark Plug Wire Set
4.73 Reviews
$52.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2022 Cadillac CT5, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 GMC Sierra 1500 Limited, 2022-2022 GMC Sierra 1500 Limited, 2021-2022 Cadillac Escalade, 2021-2022 Cadillac Escalade ESV, 2021-2022 Chevrolet Express 2500, 2021-2022 Chevrolet Express 3500, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Tahoe, 2021-2022 Chevrolet Tahoe, 2021-2022 GMC Savana 2500, 2021-2022 GMC Savana 3500, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon XL, 2021-2022 GMC Yukon XL, 2020-2022 Chevrolet Silverado 2500 HD
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-6001
item #1001PPNZ
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Walker ProductsPart # 924-6002
Walker Products 924-6002 Spark Plug Wire Set
4.73 Reviews
$50.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2022 Cadillac CT5, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 GMC Sierra 1500 Limited, 2022-2022 GMC Sierra 1500 Limited, 2021-2022 Cadillac Escalade, 2021-2022 Cadillac Escalade ESV, 2021-2022 Chevrolet Express 2500, 2021-2022 Chevrolet Express 3500, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Tahoe, 2021-2022 Chevrolet Tahoe, 2021-2022 GMC Savana 2500, 2021-2022 GMC Savana 3500, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon XL, 2021-2022 GMC Yukon XL, 2020-2022 Chevrolet Silverado 2500 HD
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-6002
item #1001PQ5C
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Walker ProductsPart # 924-1829
Walker Products 924-1829 Spark Plug Wire Set
4.73 Reviews
$45.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Chevrolet Silverado 1500, 2007-2007 Chevrolet Silverado 1500 HD Classic, 2007-2007 Chevrolet Silverado 2500 HD, 2007-2007 Chevrolet Silverado 3500 Classic, 2007-2007 GMC Sierra 1500 HD Classic, 2007-2007 GMC Sierra 2500 HD, 2007-2007 GMC Sierra 3500 Classic, 2007-2007 GMC Sierra 3500 HD, 2006-2006 Chevrolet Silverado 2500, 2005-2006 Chevrolet Silverado 1500 HD, 2005-2006 GMC Sierra 1500 HD, 2005-2005 Chevrolet Silverado 2500, 2004-2008 Chevrolet W3500 Tiltmaster, 2004-2008 GMC W3500 Forward, 2003-2010 GMC W4500 Forward, 2003-2008 Chevrolet W4500 Tiltmaster, 2003-2007 Hummer H2, 2003-2006 Chevrolet Silverado 1500, 2003-2006 Chevrolet Sonora, 2003-2006 Chevrolet Suburban 1500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1829, 3147, 3152, 9646, 9708, 8HY3152, 9568, 27874,
...View moreitem #1001PTRW
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Walker ProductsPart # 924-6003
Walker Products 924-6003 Spark Plug Wire Set
4.73 Reviews
$56.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2022 Cadillac CT5, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 Chevrolet Silverado 1500 LTD, 2022-2022 GMC Sierra 1500 Limited, 2022-2022 GMC Sierra 1500 Limited, 2021-2022 Cadillac Escalade, 2021-2022 Cadillac Escalade ESV, 2021-2022 Chevrolet Express 2500, 2021-2022 Chevrolet Express 3500, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Suburban, 2021-2022 Chevrolet Tahoe, 2021-2022 Chevrolet Tahoe, 2021-2022 GMC Savana 2500, 2021-2022 GMC Savana 3500, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon, 2021-2022 GMC Yukon XL, 2021-2022 GMC Yukon XL, 2020-2022 Chevrolet Silverado 2500 HD
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-6003
item #1001PQ5Z
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Walker ProductsPart # 924-6004
Walker Products 924-6004 Spark Plug Wire Set
4.73 Reviews
$51.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Chevrolet Silverado 1500, 2007-2007 Chevrolet Silverado 1500 HD Classic, 2007-2007 Chevrolet Silverado 2500 HD, 2007-2007 Chevrolet Silverado 3500 Classic, 2007-2007 GMC Sierra 1500 HD Classic, 2007-2007 GMC Sierra 2500 HD, 2007-2007 GMC Sierra 3500 Classic, 2007-2007 GMC Sierra 3500 HD, 2006-2006 Chevrolet Silverado 2500, 2005-2006 Chevrolet Silverado 1500 HD, 2005-2006 GMC Sierra 1500 HD, 2005-2005 Chevrolet Silverado 2500, 2004-2008 Chevrolet W3500 Tiltmaster, 2004-2008 GMC W3500 Forward, 2003-2010 GMC W4500 Forward, 2003-2008 Chevrolet W4500 Tiltmaster, 2003-2007 Hummer H2, 2003-2006 Chevrolet Silverado 1500, 2003-2006 Chevrolet Sonora, 2003-2006 Chevrolet Suburban 1500
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-6004
item #1001PTDQ
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Walker ProductsPart # 924-1553
Walker Products 924-1553 Spark Plug Wire Set
4.73 Reviews
$62.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015-2015 Chevrolet Camaro, 2013-2014 Chevrolet Express 2500, 2013-2014 Chevrolet Express 3500, 2013-2013 Chevrolet Suburban 2500, 2012-2015 Chevrolet Caprice, 2012-2014 Chevrolet Suburban 1500, 2012-2012 Chevrolet Suburban 2500, 2011-2015 Ford F-250 Super Duty, 2011-2015 Ford F-350, 2011-2015 Ford F-350 Super Duty, 2011-2013 Chevrolet Silverado 3500, 2011-2013 GMC Yukon XL 2500, 2011-2013 Ram 1500, 2011-2011 Chevrolet Caprice, 2011-2011 Chevrolet Suburban 1500, 2011-2011 Ram Dakota, 2010-2015 Chevrolet Camaro, 2010-2014 Chevrolet Express Cargo, 2010-2014 Chevrolet Express Pasajeros, 2010-2014 Ford F-150
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1553
item #1001PSN3
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Walker ProductsPart # 924-1260
Walker Products 924-1260 Spark Plug Wire Set
4.73 Reviews
$33.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1974-1974 Buick Apollo, 1974-1974 Chevrolet G30 Van, 1974-1974 Chevrolet P10 Van, 1974-1974 GMC G25/G2500 Van, 1974-1974 GMC G35/G3500 Van, 1974-1974 GMC P15/P1500 Van, 1974-1974 Pontiac LeMans, 1973-1974 Chevrolet Malibu, 1973-1974 Oldsmobile Omega, 1973-1973 Buick Apollo, 1973-1973 Chevrolet P10 Van, 1972-1974 GMC P25/P2500 Van, 1971-1974 Chevrolet G20 Van, 1971-1974 Pontiac Ventura, 1971-1972 Chevrolet G30 Van, 1971-1972 GMC Sprint, 1970-1974 Chevrolet G30 Van, 1970-1974 Chevrolet P20 Van, 1970-1974 Chevrolet P30 Van, 1970-1974 GMC G35/G3500 Van
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1260, 35-6319, 6050, 9119, 9337, 131, 27619, 29638,
...View moreitem #1001PP77
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Walker ProductsPart # 924-2074
Walker Products 924-2074 Spark Plug Wire Set
4.73 Reviews
$62.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2006-2007 Chevrolet Express 1500, 2006-2007 Chevrolet Express 2500, 2006-2007 Chevrolet Express 3500, 2006-2007 GMC Savana 1500, 2006-2007 GMC Savana 2500, 2006-2007 GMC Savana 3500, 2003-2007 Chevrolet Express 2500, 2003-2007 Chevrolet Express 3500, 2003-2007 GMC Savana 2500, 2003-2007 GMC Savana 3500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-2074, 35-8352, 4714, 7830, 7831, 3147, 9647, 2X1768,
...View moreitem #1001PTPP
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Walker ProductsPart # 924-1335
Walker Products 924-1335 Spark Plug Wire Set
4.73 Reviews
$42.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1986-1986 Jeep Comanche, 1985-1985 Oldsmobile Cutlass Ciera, 1984-1986 Jeep Cherokee, 1984-1986 Jeep Wagoneer, 1983-1984 Chevrolet S10 Blazer, 1983-1984 GMC S15 Jimmy, 1982-1984 Chevrolet Camaro, 1982-1984 Chevrolet S10, 1982-1984 GMC S15, 1982-1984 Pontiac Firebird, 1982-1982 Buick Century, 1982-1982 Oldsmobile Cutlass Ciera
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Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1335, 35-6308, 35-6125, 2954, 9028, 9033, 9025, 26640,
...View moreitem #1001PTTT
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Walker ProductsPart # 924-1437
Walker Products 924-1437 Spark Plug Wire Set
4.73 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1996-2000 Chevrolet C2500, 1996-2000 Chevrolet C3500, 1996-2000 Chevrolet Express 3500, 1996-2000 Chevrolet K2500, 1996-2000 Chevrolet K3500, 1996-2000 GMC C2500, 1996-2000 GMC C3500, 1996-2000 GMC C3500HD, 1996-2000 GMC K2500, 1996-2000 GMC K3500, 1996-2000 GMC Savana 3500, 1996-1999 Chevrolet C2500 Suburban, 1996-1999 Chevrolet K2500 Suburban, 1996-1999 Chevrolet P30, 1996-1999 GMC C2500 Suburban, 1996-1999 GMC K2500 Suburban, 1996-1999 GMC P3500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1437, 35-8151, 3138, 9520, EL3138, 27861, 48369, L-4344,
...View moreitem #1001PPPU
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What Spark Plug Wires Do
Spark plug wires carry high voltage from the ignition coil or distributor to the spark plugs on engines equipped with separate ignition leads. Their insulated cables and boots help keep that voltage on its intended path to the plugs.
A-Premium offers wire sets for selected engines with different wire counts, lengths and connections. Match the exact application and ignition layout, then check the terminal ends and boot angles; wire diameter alone does not establish fit.
Inspecting And Replacing Ignition Wires
Heat damage, cuts or loose connections can interfere with spark delivery and contribute to misfires or rough running. Inspect the wires, boots, spark plugs and ignition components before deciding what needs replacement; similar symptoms can have other causes.
Keep each lead connected to the correct terminal and route it away from hot or moving components using the specified supports. Wire manufacturers recommend replacing leads one at a time and pulling on the boot rather than the cable. On distributor-equipped systems, also inspect the cap and distributor rotor as separate components.
Frequently Asked Questions (FAQ)
Does the number of wires always equal the number of cylinders?
The contents depend on the ignition layout: some distributor systems also use a separate coil wire. Check the selected set's listed contents and the vehicle application instead of choosing by cylinder count alone.
Why do wire length and boot angle matter?
The lead must reach the correct connection without stretching and follow a safe route around the engine. Boot shape and angle affect how it seats at the plug or coil and help it clear nearby parts.
Are spark plug wires used on every ignition system?
Some engines use individual coils mounted directly on the spark plugs with insulated coil boots instead of conventional long plug leads. Identify the installed ignition design before choosing wires or boots.
Does a thicker spark plug wire automatically improve ignition performance?
Wire diameter alone does not describe its resistance, terminals or compatibility. Choose the wire construction and specifications appropriate to the ignition system rather than assuming a larger diameter provides an upgrade.
What can damage a spark plug wire before it wears out?
A wire can be burned by nearby exhaust heat, cut by a sharp edge or damaged when the cable is pulled instead of its boot. Correct routing and secure supports help keep the replacement away from these hazards.