STUDEBAKER LARK Champion Spark Plugs Spark Plugs

Spark Plug, RJ12YC, Copper Plus, 14mm Thread, .375 in. Reach, Resistor, GM, Jeep, Mopar, International, Each

Part Number: CPN-14

4.94 out of 5 stars ( 17 )

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

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

Spark Plug, Copper Plus, Nickel Copper Alloy, 14mm Thread, 0.375 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: CPN-871

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Traditional, Copper, Projected Tip, 14mm Thread, 0.437 in. Reach, Gasket Seat, Each

Part Number: CPN-857

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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

Part Number: CPN-854

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Spark Plug, 14mm, Gasket Seat, .375 in. Reach, J8C, Each

Part Number: CPN-841-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Spark Plug, Industrial, Nickel Copper Alloy, 14mm Thread, 0.438 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: CPN-91

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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