Autolite A4123 4R5 Spark Plug fits Iron Head Sportster 1979-85 Royal Enfield & Ural Models Oem 32301-80 Sold Each (more models listed below)

Autolite Standard, .040 Gap, Pack of 4 Fits Ironhead Sportster 1979/1985 Replaces HD Code 4R5 Replaces HD# 32301-80 Aluminum oxide insulator for high thermal conductivity, high dielectric strength, and precise heat range control Tapered chrome-nickel alloy tip creates a greater spark, precise heat range control and better acceleration Terminal post bonded to a center electrode for gas tightness and full voltage Copper core center electrode for better fouling resistance Available in Iridium plugs which are the ultimate in spark plug technology Iridium is six times harder than platinum and is heat resistant to temperatures up to 4000° F The Iridium electrode is 25% smaller than a platinum electrode and is 75% smaller than a conventional nickel electrode The micro-electrode reduces voltage requirements and extends ignition life.

Sold Each

More models this plug fits below:

1985-81 Hailwood Replica - Ducati

1988-87 F1-S - Ducati

1985-79 XL - All Models Harley Sportster

Calgiva Models, Ducati Models, Honda Models, Lowboy (v-cycle Traike) Models, Royal Enfield Models, Suzuki Models, Ural Models, Yahama Models, Can-Am Model, Honda Models, Hyosung Models, Kawasaki Models, Polaris Models

The link below to Autolite Plug listing: copy and Google

https://www.autolite.com/docs/default-source/tech-specs/technical-bulletins-and-installation-instructions---french/autolite_rv5_0221_fis.pdf?sfvrsn=dfc3fd0d_2

(M18080)