1966 Spark Plugs

Spark Plug, Racing, Copper Core, Gasket Seat, 14mm Thread, 0.930 in. Reach, Each

Part Number: ATL-AR3910X

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .437 in. Reach, Non-Projected Tip, Non-Resistor, Each

Part Number: ATL-216

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .375 in. Reach, Partial Projected Tip, Non-Resistor, Each

Part Number: ATL-295

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Spark Plug, J12YC, Copper Plus, Gasket Seat, 14mm Thread, .380 in. Reach, Non-Resistor, Each,

Part Number: CPN-10

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, N12YC, Copper Plus, 14mm Thread, .750 in. Reach, Projected Tip, Non-Resistor, Each

Part Number: CPN-38

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, Racing, Copper Core, Gasket Seat, 14mm Thread, 0.750 in. Reach, Each

Part Number: ATL-AR51

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Spark Plug, Standard Series, Gasket Seat, 14mm Thread, .437 in. Reach, Non-Resistor, Each

Part Number: NGK-3212

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

Spark Plug, Copper Plus, 14mm Thread Size, 0.375 in. Reach, 8 Heat Range, Each

Part Number: CPN-841

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, D16, Industrial and Agricultural, 18mm Thread, .500 in. Reach, Non-Resistor, Each

Part Number: CPN-516

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, N9YC, Copper Plus, 14mm Thread, .750 in. Reach, Non-Resistor, Small Engine, Each

Part Number: CPN-300

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, Copper Core, Non-Resistor, 14mm x 1.25, Gasket Seat, 0.435 in, Reach, Each

Part Number: ATL-437

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

• $20.00 Summit Bucks

Spark Plug, Standard Series, Gasket Seat, 14mm Thread, .437 in. Reach, Non-Resistor, Each

Part Number: NGK-3112

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Spark Plug, Gasket Seat, 14mm Thread, .500 in. Reach, Projected Tip, Non-Resistor, Each

Part Number: NGK-7331

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Standard, 12mm Thread, .500 in. Reach, 18mm Hex, Gasket Seat, Non-Resistor, Each

Part Number: NGK-7112

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .375 in. Reach, Partial Projected, Non-Resistor, Each

Part Number: ATL-4275

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Tapered Seat, 0.431 in, Reach, Each

Part Number: ATL-685

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Spark Plug, Copper Plus, Gasket Seat, 14mm Thread, .500 in. Reach, Each

Part Number: CPN-306

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, J6C, Copper Core, 14mm Thread, .375in. Reach, Set

Part Number: CPN-823-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, N2C, Copper Core, 14mm Thread, .750in. Reach, Set

Part Number: CPN-805C

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, N3C, Copper Core, 14mm Thread, .750in. Reach, Set

Part Number: CPN-801C

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, N4C, Copper Core, 14mm Thread, .750in. Reach, Set

Part Number: CPN-803C

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

USE AUP 373

Part Number: CPN-506

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, N11YC, Copper Plus, 14mm Thread, .750 in. Reach, Projected Tip, Non-Resistior, Each

Part Number: CPN-302

Not Yet Reviewed

Estimated Ship Date: Today

• $20.00 Summit Bucks

Spark Plug, Jeep, Willys, Each

Part Number: CWA-4339491

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

• Drop Ship
• Special Order