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#4 in Best Spark Plugs

NGK Spark Plug BR8ES For Motorcycle, Marine, ATV and more - Copper Core, Nickel Electrode - Set of 4

NGK · 5 more picks

Best for

Best budget

Amazon rating

★★★★★4.8(1,987)

Amazon aggregate, one input among many in the Verdict Score

Verdict scoreGreat
81/ 100

Current price

$14.99

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Updated Jun 27, 2026 · 1 min read

NGK Spark Plug BR8ES For Motorcycle, Marine, ATV and more - Copper Core, Nickel Electrode - Set of 4

The consensus

What reviewers found

Synthesized across the trust-weighted source mix below.

The NGK BR8ES copper-core set earns a 4.8-star average across roughly 2,000 verified-purchase reviews, making it the standout value pick we read. At under $15 for a set of four, it's positioned for motorcycle, marine, ATV, and small-engine use, and the reviewer consensus reflects reliable, no-frills performance. Copper plugs trade the long service life of iridium for a much lower price and excellent conductivity, which reviewers favor for performance and air-cooled applications where shorter change intervals are acceptable.

What reviewers liked

  • Excellent 4.8-star average across nearly 2,000 verified-purchase reviews
  • Lowest price among the standalone sets at under $15
  • Copper core favored for motorcycle, marine, and small-engine use

Where it falls short

  • Copper plugs require more frequent replacement than iridium
  • Heat-range selection is critical and not a universal fit
  • Only retailer-review data available; no expert or lab corroboration

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Across the reviews

Synthesis · not our verdict

The NGK BR8ES copper-core set earns a 4.8-star average across roughly 2,000 verified-purchase reviews, making it the standout value pick we read. At under $15 for a set of four, it's positioned for motorcycle, marine, ATV, and small-engine use, and the reviewer consensus reflects reliable, no-frills performance.

Copper plugs trade the long service life of iridium for a much lower price and excellent conductivity, which reviewers favor for performance and air-cooled applications where shorter change intervals are acceptable. The signal here is purely retailer-based satisfaction; no independent testing was available. Buyers should confirm the heat range suits their engine, since copper plugs are often selected by spec rather than as a universal upgrade.

Key specs

Source: Amazon listing
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
Research Applications Prior to Purchase To Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed.
This Listing is for 4 BR8ES 5422 Spark Plugs

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