Best Copper Spark Plugs in 2026

Designed to operate over a much wider heat range than ordinary plugs. Heat Range: 7

Resists carbon buildup and pre-ignition

High alumina ceramics for better heat transfer and electrical insulation

Trivalent metal plating provides superior anti-corrosion and anti-seizing properties

Corrugated ribs prevent flashover

Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer

Copper Plus - Dependable Performance and Durability

OE type replacement plug

Copper core center electrode allows for accurate control of heat range for longer life

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

Made by AC Delco with nickel alloy tip, copper core and ribbed suppressor seal for durability and performance

Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer

Nickel-chrome alloy sheathing on the ground and center electrodes help resist wear from spark erosion and the corrosive environment of the combustion chamber

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.

Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer

NGK is the world's largest supplier of OEM spark plugs

Designed to operate over a much wider heat range than ordinary plugs

Resists carbon buildup and pre-ignition

High alumina ceramics for better heat transfer and electrical insulation

Dependable and durable

Patented SAC-9 semi-conductor resistor for maximum EMI & RFI suppression

Copper core center electrode allows for accurate control of heat range for longer life

This 4 pack Champion Copper Plus 980 Spark Plug replaces Champion Spark Plug XC92YC, parts and is perfect for replacement or a performance upgrade.

IMPROVE PERFORMANCE: The tried-and-true Champion Copper Plus SME Spark Plug boosts performance so that your engine runs at its best. For projects large and small, the Champion Copper Plus SME spark plugs are the right plugs for the job. They help power millions of small engines, including mowers, tractors, and similar small engine machines

CHOOSE CONSISTENT COMBUSTION: The Champion Copper Plus SME Spark Plug employs a copper-core center electrode and patented SAC-9 semiconductor resistor to produce complete and efficient combustion over the life of the spark plug. The Ultraseal-coated shell reliably withstands soot and offers superior etching tolerance, ensuring long-lasting sparking capabilities and dependable performance and durability

MAXIMUM PERFORMANCE: Every Double Platinum spark plug is necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration. Full copper core electrode provides better performance in all conditions

IMPROVED DURABILITY: Our spark plugs are platinum-to-platinum firing for superior durability and super conductive Yttrium enhanced ground electrode provides superior heat transfer

CONSTRUCTION: These spark plugs are platinum enhanced high nickel alloy side electrode maintains precision gap and assures virtually no gap erosion for longer plug life

Double Iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs

0.6mm fine wire firing pin provides superior ignitability and performance

360 Degree continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability

Consult owners manual for proper part number identification and proper installation

Genuine Champion Spark Plugs

Please refer to list for compatibility

OE Type Copper Spark Plug

Sample Image Provided May Differ From Actual Product.

Sold on Amazon

Please refer to list for compatibility

Genuine Champion Spark Plugs

Solid copper core for greater spark

Longer insulator nose prevents fouling

Corrugated ribs on insulator prevents flashover

MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions

IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability

CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together

Sold in packs of 4

One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life

Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system

Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance

Black onyx coating helps prevent corrosion

Nickel-chrome alloy sheathing to help prevent corrosion on center electrode

Copper core thermal properties provide great heat transfer and increased plug durability

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

MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions

IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability

CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together

RC12YC SPARK PLUG REPLACE for champion rc12yc 2829 71-1711, for John Deere M78543.

Replace for Briggs and Stratton 491055, 491055S, 491055T, 499608, 5066, 72347GS, 792015, 805015, 692051, 694385.

FIT FOR KOHLER 12 132 02, 12 132 02-S, 12 132 01-S, 25 132 12-A, 25 132 12-S, 24 132 01-S.

Copper core for better thermal conductivity

Machine rolled threads to reduce cross-threading and seizing

Five ribs prevent flashover

Hipa BPR6CV Spark Plug Replace for Champion RC12YC; NGK BK5ES; Briggs & Stratton 491055 491055S 491055T 499608 5066 72347GS 792015 805015 692051 694385

Spark Plug Replace for Kohler 12 132 02, 12 132 02-S, 12 132 01-S, 25 132 12-A, 25 132 12-S, 24 132 01-S; ARIENS 21525900, 08811700, 21536800, 21534100, 21531100, 21537800; Gravely 21531100, 21534100, 21536800; MTD CC 759-3336; Husqvrana 531308128

Hipa Spark Plugs are constructed for longer life and optimum performance:Trivalent metal plating provides superior anti-corrosion and anti-seizing properties;Corrugated ribs prevent flashover;Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer;Copper core aids in heat removal;Triple seals prevent leakage

This 8 pack Champion Copper Plus Spark Plug is compatible with Dodge Ram 1500 2003, 2002, 2001, 2000, 1999, 1998, 1997 5.2L 5.9L V8

Genuine Champion Parts

Hipa Spark Plug Replace for NGK DCPR6E, Kohler 14 132 11-S 1413211-S1 1413206-S 14-132-06-S

Spark Plug fit for Kohler XT675 XT650 XT149 XT800 XT775 CH245 CH255 KS530 KS540 KS590 RH255 RH265 Engine

Hipa Copper core Spark Plugs are constructed for longer life and optimum performance:Trivalent metal plating provides superior anti-corrosion and anti-seizing properties; Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer; Copper core aids in heat removal; Triple seals prevent leakage

specs: Spark Plug Wire, Diameter: 5 mm, Length: 20', Notes: Quality black hypolon-copper

Stens one-year warranty ensures reliability and performance for every part.

Stens branded parts are trusted by professional dealers tperform OEM quality repairs. The Stens name is featured on all Genuine Stens product packaging.

Shorty Spark Plugs For Tubular Exhaust Headers

Eliminates Dimpling Headers For Added Clearance

Improves Spark Plug Access To Fit Socket Or Wrench

RC12YC Spark Plug Replaces Old Briggs # 491055s, 491055, 805015, 72347GS , 72347, Compatible with RC12YC, BCPR6ES, Torch KR5TC

Replaces Kohler 12 132 02, 12 132 02-S, 12 132 01-S, 25 132 12-A, 25 132 12-S, 24 132 01-S ; Replaces MTD 759-3336

Replaces 21525900, 08811700, 21536800, 21534100, 21531100, 21537800; Replaces Gravely 21531100, 21534100, 21536800; Replaces Husquvrana 531308128

Finish: Zinc Plated

Gap: 3/4 in

Material: Nickel Alloy Electrodes/Copper Core