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CHAMPION SPARK PLUGS Marine Spark Plugs for Inboards/Outboards

High-quality plugs with all the features that make Champion the industry’s leader. Triple-coated shell for excellent corrosion resistance. Triple seal assembly that’s the strongest in the industry. Q and R type plugs include RFI suppression so plugs won’t affect your radio or navigation equipment. Precision rolled threads conform to all manufacturers’ specifications.
  • Available for inboard, I/O and outboard motors and personal watercraft
  • Triple-coated shell offers excellent corrosion resistance
  • Triiple-seal assembly is strongest in industry
  • Precision-rolled threads conform to all manufactuer’s specs
  • Select plug types offer RFI suppression to protect nav equipment
  • Made in U.S.A.
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
I/O Plug Type - RV8C, Champ #121 310146 121
In stock online.

$3.99

I/O Plug Type - RN5C, Champ #123 307969 123
In stock online.

$4.99

I/O Plug Type - RF10C, Champ #129 307977 129
In stock online.

$4.99

I/O Plug Type - RJ12YC, Champ #14 307936 14
In stock online.

$4.99

I/O Plug Type - RV15YC4, Champ #18 307910 18
In stock online.

$4.99

I/O Plug Type - 3018, Champ #3018 1446756 3018
In stock online.

$4.99

I/O Plug Type - RC12MC4, Champ #318 1446723 318
In stock online.

$4.99

I/O Plug Type - RV9YC, Champ #400 307944 400
In stock online.

$4.99

I/O Plug Type - RS12YC, Champ #401 1445907 401
In stock online.

$3.99

I/O Plug Type - RV12YC, Champ #406 307951 406
In stock online.

$4.99

I/O Plug Type - RN9YC, Champ #415 1445832 415
In stock online.

$4.99

I/O Plug Type - RJ14YC, Champ #63 307928 63
In stock online.

$4.99

I/O Plug Type - RV92YC, Champ #930 307993 930
In stock online.

$4.99

I/O Plug Type - RV91MC, Champ #942M 1445915 942M
In stock online.

$4.99

Product Description

High-quality plugs with all the features that make Champion the industry’s leader. Triple-coated shell for excellent corrosion resistance. Triple seal assembly that’s the strongest in the industry. Q and R type plugs include RFI suppression so plugs won’t affect your radio or navigation equipment. Precision rolled threads conform to all manufacturers’ specifications.
  • Available for inboard, I/O and outboard motors and personal watercraft
  • Triple-coated shell offers excellent corrosion resistance
  • Triiple-seal assembly is strongest in industry
  • Precision-rolled threads conform to all manufactuer’s specs
  • Select plug types offer RFI suppression to protect nav equipment
  • Made in U.S.A.
Questions about this Product?
1 (800) 262-8464