MERCURY COUGAR Spark Plugs

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .984 in. Reach, Resistor, Each

Part Number: NGK-4344

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7401

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

Spark Plug, Iridium IX, Tapered Seat, 18mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7510

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .807 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7316

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Today

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7559

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Tapered Seat, 0.431 in, Reach, Each

Part Number: ATL-XP24

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

USE NIP 4713

Part Number: NGK-97287

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

Spark Plug, Double Platinum, 18mm Reach, 5/8 in. Hex, Tapered Seat, Resistor, Each

Part Number: NGK-7740

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Iridium Power, IT20, 14mm Thread, 18.00mm Reach, Tapered Seat, Universal, Each

Part Number: DNP-5326

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Iridium, Tapered Seat, 14mm Thread, .708 in. Reach, Resistor, Each

Part Number: CPN-9402

Not Yet Reviewed

Estimated Ship Date: Today

USE AUP XP5144

Part Number: CPN-9200

Not Yet Reviewed

Estimated Ship Date: Today

Spark Plug, Iridium Power, Gasket Seat, 14mm Thread, 0.689 in. Reach, Projected Tip, Resistor, Each

Part Number: DNP-IT20

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

• Special Order

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .709 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7243

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

• Special Order

Spark Plug, Iridium Long Life, ZT20EPR11, 14mm Thread, 18.00mm Reach, Tapered Seat, Universal, Each

Part Number: DNP-5087

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

• Special Order