ReviewsAlumina Insulator

NGK 4462 Laser Iridium Spark Plug - IZFR6J, 1 Pack

Tapered-cut ground electrode improves ignitability and reduces quenching.
98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Iridium is six times more durable than platinum.

V-Twin Performance Spark Plugs Replaces Harley spark plug #6R12.

V-Twin perfomance spark plugs features a copper core electrode for a longer service life, nickel plated housing, 95% pure alumina insulator and a heat crimping process to ensure a leak free seal..

Sportster Sport XL 1200S Performance Spark Plugs Pair repl. OEM# 6R12

Conventional style spark plugs, available in OEM heat ranges.
Plugs have a unique look with a black ceramic body.
Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation.

NGK Spark Plug, NGK CR7E, ea, 1

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.

NGK Spark Plug BU8H- Set of 4

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.

NGK 4730 Standard Spark Plug - BPR8Z, 1 Pack

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.

NGK 5044 Iridium IX Spark Plug - BR8EIX, 1 Pack

fine wire center electrodes ensure high durability and consistently stable spark.
iridium alloy has an extremely high melting point, perfect for today's high-tech, high-performance engines.
pure alumina silicate ceramic insulator provides superior strength and better heat transfer.

NGK 6222 Standard Spark Plug - BPR5HS, 1 Pack

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.

NGK Spark Plug NGK DPR8EA-9 ea 1

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.

NGK 6422 Standard Spark Plug - BPR7HS, 1 Pack

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.

NGK 3823 Standard Spark Plug - BP8HS-10, 1 Pack

98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating.
High-grade alumina silicate ceramic insulator for superior strength and heat transfer.
Cold-rolled threads to prevent cross-threading and damage to cylinder heads.
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover.