Autolite Small Engine Spark Plug, 456 for Select Tecumseh Engine Power Equipment
Autolite Small Engine Spark Plug, 456 for Select Tecumseh Engine Power Equipment
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Autolite Small Engine Spark Plug, 456 for Select Tecumseh Engine Power Equipment

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Key item features

  • Compatibility: The Autolite Small Engine Spark Plug, 456 replaces Champion (J17LM, RJ17LM) and NGK (BM4A, BM4Y) spark plugs.
  • Wide Application: Fits select models of Tecumseh, Perkins, Neptune, Flambeau, Martin, Golden Jet, Pathfinder, Chris-Craft, Buchanan, Kermath, Husqvarna, Jacobsen, Heald, Muscateer, and Action-Age equipment.
  • Durable Construction: Features a copper-glass seal that bonds the insulator, terminal post, and center electrode together for a gas-tight seal and full voltage at the spark gap.
  • Enhanced Safety: Multi-rib insulator design reduces the risk of "flash-over".
  • Strength and Performance: One-piece terminal post adds strength, while the full copper core electrode ensures better performance in all conditions.
  • Reduced Interference: Built-in resistor minimizes radio frequency interference (RFI) and electrode erosion.
  • Precision Engineering: Cold-formed steel shell with precision rolled threads for reliable installation and performance.
  • Maintenance Tip: Autolite recommends consulting your equipment's repair manual for specific spark plug replacement instructions.
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Current price is $1.98
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Customer ratings & reviews

4.5 out of 5 stars
stars540 ratings217 reviews
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Reviews summary

Pros

  • : Offers lower cost compared to others.
  • : Made to last with proper fitment.
  • : Compatible with various lawn mower models.
  • : Simple process with clear instructions.
  • : Designed to fit various engines and lawn mowers.

Neutral

  • : Can be reliable and durable, but may arrive defective or mismatched.
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Showing 1-3 of 217 reviews

Dec 21, 2025
Mark
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Very good plugs next to champion. I probably believe they're the best plugs I've ever put in my Harley Davidson.

Helpful?3cdde9e0-0b0e-11f1-85c1-b9be452911c726954850
Feb 10, 2026
frank
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Ordered two packages of 4 they came in 3 orders

Helpful?3cdde9e0-0b0e-11f1-85c1-b9be452911c726954850
Mar 23, 2026
mrDubb
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

spark plug

what can i say its a spark plug put it in fired off thats what they do good price

Helpful?3cdde9e0-0b0e-11f1-85c1-b9be452911c726954850