2004 GMC SIERRA 2500 HD Ignitions & Electrical

Alternator, Natural, Stock Replacement, 145/130 amps, Buick, Cadillac, Chevrolet, GMC, Isuzu, Saab, Each

Part Number: SUM-810352

4.67 out of 5 stars ( 21 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Red, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867828R

4.45 out of 5 stars ( 101 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coil, Coil Pack, Epoxy, D580 Style, Square, Black, LS-style, Cadillac, Chevy, GMC, Pontiac, Each

Part Number: SUM-850502

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coils, Coil Pack, D585 Style, Epoxy, Round, Black, LS, V8, Chevy, Cadillac, GMC, Buick, Hummer, Isuzu, Set of 8

Part Number: SUM-850501B

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Red, 12" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867830R

4.75 out of 5 stars ( 44 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coils, Coil Pack, D580 Style, Epoxy, Square, Black, LS-style, Cadillac, Chevy, GMC, Pontiac, Set of 8

Part Number: SUM-850502-8

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, Extreme 9000 Ceramic, Spiral Core, 8mm, Black, Black Ceramic 180 Degree Boots, GM, 4.8, 5.3, 6.0L, Set

Part Number: ACC-9059CK

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, 88 Series, Street / Strip, 8.5mm, Black, 50 Ohm, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-887828

4.42 out of 5 stars ( 26 )

Estimated Ship Date: Monday 2/9/2026

Starter, Protorque, Mini, Chevy, LS, Each

Part Number: SUM-820320

4.0 out of 5 stars ( 12 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Blue, 12" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867830

4.83 out of 5 stars ( 35 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coil, MSC II Coil Pack, D580 Style, Epoxy, Square, Red, GM LS1/LS6, Set of 8

Part Number: MSD-82858

4.0 out of 5 stars ( 13 )

Estimated Ship Date: Monday 2/9/2026

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Ignition Coils, Coil Pack, D580 Style, Epoxy, Square, Black, Includes Brackets, Cadillac, Chevy, GMC, Pontiac, LS, Kit

Part Number: SUM-CSUM8500

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Ignition Coils, Coil Pack, D585 Style, Epoxy, Round, Black, LS, V8, Chevy, Cadillac, GMC, Buick, Hummer, Isuzu, Each

Part Number: SUM-850501-1B

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Spark Plug Wires, 88 Series, Street / Strip, 8.5mm, Black, 50 Ohm, 12" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-887830

4.13 out of 5 stars ( 30 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coil, MSC II Coil Pack, Epoxy, Square, Red, GM LQ Truck Engines, Set of 8

Part Number: MSD-82868

3.5 out of 5 stars ( 6 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Blue, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867828

4.14 out of 5 stars ( 14 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coil, Blaster OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, 4.8, 5.3, 6.0L, Each

Part Number: MSD-8263

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/9/2026

Alternator, Stock Replacement, Natural Finish, Buick, Cadillac, Chevrolet, GMC, Isuzu, Saab, Each

Part Number: SUM-810353

3.17 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Blue, 9" Leads, OEM Spark Plug Boots With Heat Shields Installed, LS, V8, Set

Part Number: SUM-867828WS

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Replacement Component, IAC/TPS Mounting Hardware, Stainless, GM LS Engines, Each

Part Number: SUM-921100

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/9/2026

Ignition Coil, MSC II Coil Pack, D580 Style, Epoxy, Square, Black, GM LS1/LS6, Set of 8

Part Number: MSD-828583

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

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Ignition Coils, Coil Pack, D585 Style, Epoxy, Round, Red, LS, V8, Chevy, Cadillac, GMC, Buick, Hummer, Isuzu, Each

Part Number: SUM-850501-1R

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

Alternator, Internal Regulator, 12 V, 145 amps, Natural Finish, Serpentine Pulley, Each

Part Number: SUM-810347

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

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Spark Plug Wires, Black Ceramic, Spiral Core, 8mm, Black, 135 Degree Boots, GM, LS, Set

Part Number: SUM-881111

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/9/2026

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