Reviews Pure Copper Core Provides Great Heat Transfer

NGK 6578 Spark Plugs (BPR4ES) - Pack of 2

Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer.

trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
pure alumina silicate ceramic insulator, provides superior strength and better heat transfer.

Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures.
Pure copper core provides great heat transfer and helps maximize plug durability.
Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system.
Ribless insulator helps optimize plug to boot seal.
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

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.

Designed to operate over a much wider heat range than ordinary plugs.
High alumina ceramics for better heat transfer and electrical insulation.
Solid copper core and nickel tipped electrode provide a longer plus life.
Patented triple gasket sealing process eliminates the possibility of combustion gas leakage.
You can depend on NGK for quality and reliability.
Insulators constructed from 99 percent pure alumina silicate.
Solid core offers superior heat dissipation and conductivity.

Designed to operate over a much wider heat range than ordinary plugs.
High alumina ceramics for better heat transfer and electrical insulation.
Solid copper core and nickel tipped electrode provide a longer plus life.
Patented triple gasket sealing process eliminates the possibility of combustion gas leakage.
You can depend on NGK for quality and reliability.
Insulators constructed from 99 percent pure alumina silicate.
Solid core offers superior heat dissipation and conductivity.

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.

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.

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.

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.