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Autolite Small Engine Spark Plug, 458

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Key item features

  • Compatibility: The Autolite Small Engine Spark Plug, 458 replaces Champion (J19LM, RJ19LM, RJ19HX), NGK (B2), and Briggs & Stratton (796112S, 591868) spark plugs.
  • Durable Seal: Copper-glass seal bonds insulator, terminal post, and center electrode together, ensuring full voltage at the spark gap and a gas-tight seal.
  • Flash-Over Protection: Multi-rib insulator design reduces the risk of flash-over, enhancing safety and performance.
  • Enhanced Strength: One-piece terminal post adds strength and durability to the spark plug.
  • RFI Reduction: Built-in resistor reduces radio frequency interference (RFI) and minimizes electrode erosion.
  • Precision Threads: Cold-formed steel shell with precision rolled threads ensures a secure fit and easy installation.
  • Performance Core: Full copper core electrode provides better performance under various conditions.
  • Usage Recommendation: Autolite recommends consulting your equipment's repair manual for specific instructions on changing spark plugs.
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4.5 out of 5 stars
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Showing 1-3 of 221 reviews

Jun 29, 2026
anonymous
Top Reviewer
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Multipack quantity: 1
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

perfect

took my mad at the world leaf blower never wanting to starter to maybe 2 pulls after prime

Helpful?c759be10-6891-11f1-8dd0-9d3763a63fd716927780
Apr 26, 2024
Bourneblogger
5 out of 5 stars review

Verified Purchase

Replaced Torch F5RTC

This replaced a Torch F5RTC spark plug for my Yardmax 20” mower with Honda motor. It requires a 13/16 deep socket spark plug wrench with arm attachment to get to it. I bought a socket wrench set for $20 at Walmart, too. Took 5 mins once I had all the parts.

Helpful?c759be10-6891-11f1-8dd0-9d3763a63fd716927780
May 17, 2026
Daniel
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Nice Sparkplugs

Works well. Tractor runs much better.

Helpful?c759be10-6891-11f1-8dd0-9d3763a63fd716927780