AC Spark Plugs

Spark Plug, Copper Core, Resistor, 18mm x 1.50, Tapered Seat, 0.438 in, Reach, Each

Part Number: ATL-45

4.7 out of 5 stars ( 20 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air

Spark Plug, RN12YC, Copper Plus, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-404

4.94 out of 5 stars ( 17 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air

• $25 Summit Bucks

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

Part Number: ADO-R44XLS

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.750 in, Reach, Each

Part Number: ATL-65

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air

Spark Plug, RF11YC, Copper Plus, 18mm Thread, .460 in. Reach, Resistor, Ford, Mercury, Each

Part Number: CPN-22

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air

• $25 Summit Bucks

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Tapered Seat, 18mm Thread, Each

Part Number: ADO-R83TS

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air

Spark Plug, Professional, Platinum Tip, Gasket Seat, 14mm Thread, Resistor, Each

Part Number: ADO-41-828

Not Yet Reviewed

Estimated Ship Date: Monday 4/6/2026 if shipped by air

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

Part Number: ADO-R44F

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/6/2026 if shipped by air