BG SPARK PLUGS

BG’s Iridium Electrode Spark Plugs Are Designed To Run Cooler, Last Longer, For Today’s Clean Burn Engines. . .

  • Iridium electrodes resist erosion at high temperatures.
  • Exceptional performance under the most demanding operating conditions.
  • Models available to meet the requirements of most industrial engines.

Consistent long-term performance has established BG’s reputation for engineering excellence.

Plug Type Thread Size Thread Reach Model Heat Range Shielding Thread Resistor Installed Height Hex Size Std. Gap
Unshielded 7/8″-18 5/8″ RB212-1 Medium Yes 2-11/32″ 15/16″ .015″
5/8″ RB105-1 Cold Yes 3-7/16″ 15/16″ .015″
1″ RB114-1 Cold Yes 3-1/16″ 15/16″ .015″
1/2″ RB485-1 Medium Yes 2-15/32″ 7/8″ .015″
Shielded 7/8″-18 5/8″ RB118SD Cold 3/4″-20 Yes 2-3/32″ 15/16″ .015″
1/2″ RBH485SD Cold 3/4″-20 Yes 2-1/4″ 7/8″ .015″
13/16″ BG341-1 Medium 3/4″-20 Yes 2-1/2″ 7/8″ .014″

All models have two iridium ground electrodes except:
  – Model BG341-1 has a massive nickel electrode (3 prongs).

(BG Spark Plugs continued on page 51)


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