Automotive Ignition & Electrical Supplies

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Whatever sparks your high performance dream, you’ll find it here. Get your engine started with a high-amp battery and high-torque mini starter. Keep the power flowing...

Whatever sparks your high performance dream, you’ll find it here. Get your engine started with a high-amp battery and high-torque mini starter. Keep the power flowing with a digital ignition control, performance distributor, and low-resistance ignition wires. Outfit your race car with competition-proven automotive electronics and accessories, or rewire your resto-mod with a complete wiring harness. Reprogram your vehicle’s computer or rejuvenate your daily driver with a new distributor cap, rotor, and spark plugs. We have the best automotive ignition and electrical supplies from the biggest names in the industry, in stock...

Showing All Items, Including Not in Stock Items That Match "S-821"

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Results 1 - 25 of 44

RV Designer Wall Switch Panels S821

Switch Panel, RV Wall Mount, 1 Toggle Switch, Plastic, White, Each

Part Number: RVD-S821

Not Yet Reviewed

Estimated Ship Date: Today

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Standard Motor Wiring Connectors S-821

Wiring Pigtails, Female, Chevy, Ford, Jaguar, Lincoln, Mazda, Mercury, Pontiac, Saab, Saturn, Each

Part Number: SMP-S821

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Yuasa AGM Maintenance-Free Batteries YT12B-BS

Battery, AGM Maintenance-Free, Starting, 12 V, 210 Cold Cranking Amps (0 degrees F), Top Terminals, Ducati, Kawasaki, Triumph, Yamaha, Each

Part Number: YSA-YT12B-BS

4.95 out of 5 stars ( 20 )

Cannot be shipped Internationally

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Cannot be shipped Internationally

Antigravity Batteries Re-Start Batteries AG-AT12-BS-HD-RS

Battery, Re-Start, Starting, 12 V, Lithium-Ion, 480 Amps, Each

Part Number: AVB-AGAT12BSHDRS

Not Yet Reviewed

Cannot be shipped Internationally

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Cannot be shipped Internationally

Champion Copper Plus Spark Plugs 309E

Spark Plug, Copper Plus, Nickel Copper Alloy, 10mm Thread, 0.750 in. Reach, Flat Seat, 5/8 in. Wrench Size, Each

Part Number: CPN-309E

Not Yet Reviewed

Estimated Ship Date: Today

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Antigravity Batteries Re-Start Batteries AG-AT12-BS-RS

Battery, Re-Start, Starting, 12 V, Lithium-Ion, 360 Amps, Each

Part Number: AVB-AGAT12BSRS

Not Yet Reviewed

Cannot be shipped Internationally if ordered today

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Cannot be shipped Internationally if ordered today

BikeMaster Lithium-Ion 2.0 Batteries 780853

BM LI 2.0 BATTERY BMP14B-FP

Part Number: BKM-BMP14B-FPLCD

Not Yet Reviewed

Cannot be shipped Internationally if ordered today

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Cannot be shipped Internationally if ordered today

BikeMaster Maintenance-Free VRLA Batteries 781310

Battery, Maintinance Free VRLA, Starting, 12 V, Top Terminals, 110 Amps, Each

Part Number: BKM-78-1310

Not Yet Reviewed

Cannot be shipped Internationally if ordered today

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Cannot be shipped Internationally if ordered today

Optima OrangeTop Lithium Powersports Batteries 150-41144

Lithium Batteries, QUAD12 12.8V, 380Amp, 4.5Ah

Part Number: ULT-150-41144

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

BikeMaster AGM Platinum II Batteries 780762

Battery, AGM Platinum II, Starting, 12 V, Top Terminals, 210 Cranking amps At 0 degrees F, Each

Part Number: BKM-78-0762

Not Yet Reviewed

Cannot be shipped Internationally if ordered today

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Cannot be shipped Internationally if ordered today

BikeMaster TruGel Batteries 780507

Battery, TruGel, 12 V, Top Post, 210 Amps, Each

Part Number: BKM-78-0507

Not Yet Reviewed

Cannot be shipped Internationally if ordered today

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Cannot be shipped Internationally if ordered today

Champion Racing Spark Plugs 654

USE AUP 4303

Part Number: CPN-654

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

NGK Multi-Ground Spark Plugs MAR9A-J

Spark Plug, Gasket Seat, 10mm Thread, .748 in. Reach, Resistor, Each

Part Number: NGK-6869

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 16, 2026 if ordered today

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Estimated Ship Date: Jun 16, 2026 if ordered today

Champion Copper Plus Spark Plugs 844

Spark Plug, Copper Plus, Gasket Seat, Nickel Alloy, 14mm Thread, 0.438 in. Reach, Each

Part Number: CPN-844

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Standard Motor Ignition Breaker Points AL-5661X

Distributor Points, Stock Replacement, Each

Part Number: SMP-AL5661X

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Standard Motor Ignition Breaker Points AL-5486P

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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MotoRad Ignition Coils 1IC175

Ignition Coil

Part Number: SNN-1IC175

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Standard Motor Wiring Connectors S2212

Wiring Pigtails, Fuel Shut-off Solenoid Connector, Female, Ford, Each

Part Number: SMP-S2212

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Holstein Ignition Coils 2IGC0057

IGNITION COIL

Part Number: HLN-2IGC0057

Not Yet Reviewed

Estimated Ship Date: Apr 15, 2026 if ordered today

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Estimated Ship Date: Apr 15, 2026 if ordered today

Spectra Premium Ignition Coils C-660

IGNITION COIL

Part Number: SGT-C660

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Champion Copper Plus Spark Plugs 854

Spark Plug, Copper Plus, 14mm Thread, Copper Tip, Universal, Each

Part Number: CPN-854

Not Yet Reviewed

Estimated Ship Date: Apr 10, 2026 if ordered today

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Estimated Ship Date: Apr 10, 2026 if ordered today

National Bearing Alternator Replacement Parts NNT203FF

Bearing, Ball, Each

Part Number: NTL-203FF

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

ACDelco Conventional Resistor Spark Plugs 19362243

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Gasket Seat, 14mm Thread, Each

Part Number: ADO-R44XL

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ACDelco Gold Battery Cables 88860042

Battery Cable, Original Equipment, Assembled, Black and Blue Synthetic Rubber Jacket, Top Post/Eyelet Ends, Each

Part Number: ADO-4BC30X

4.92 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ACDelco Conventional Resistor Spark Plugs 19354423

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Gasket Seat, 14mm Thread, Each

Part Number: ADO-R43XLS

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

NGK Standard Series Spark Plugs BR6ES

Spark Plug, Standard Series, Gasket Seat, 14mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-4922

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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