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Generator Spark Plugs
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Understanding Spark Plug Number Designation

Resistor
Shell Design
Heat Range
Firing End Design
Wide Gap Designation - if applicable
R
C
12
YC
4
R - Resistor
C - Thread size - 14mm, Reach - 3/4", Hex - 5/8"
12
14 - hotter than a 12
Y - Standard Projected Core Nose
C - Copper Plus Design
Wide gaps required to meet Federal and California requirements. - 4 to 8.

Spark Plug #
Price
Purchase Now
RC12YC

For RV's 220 (older models), 360/410, 480/570.
For Briggs & GE's Home Standby Generators - 7 - 20kW
Generac Guardian as shown
Generac Guardian Liquid Cooled - 1.6L HSB Chevy, 2.4 L HSB Hyundai

2 - RC12YC - $6.49

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RC14YC
2 - RC14YC - $6.49

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XC10YC - For 17kW Kohler

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2 - XC10YC - $9.90




























Spark Plug for 1.5L Liquid Cooled HSB MITS Generac Part #0A45310275

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4 - Spark Plugs @ $5.90 = $23.60





























Spark Plug Tool
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Spark Plug Tool - $1.50










































BPR6HS
Sold with Tune Up Kit for 9 & 10 kW

See Tune Up Kits

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