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Champion 672 V59YC 14mm Gas Spark Plug .46 Inch Reach 5/8 Inch Hx Cold
Champion 672 V59YC 14mm Gas Spark Plug .46 Inch Reach 5/8 Inch Hx Cold

Champion 672 V59YC 14mm Gas Spark Plug .46 Inch Reach 5/8 Inch Hx Cold

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Champion 672 V59YC 14mm Gas Spark Plug .46 Inch Reach 5/8 Inch Hx Cold
Champion 672 V59YC 14mm Gas Spark Plug .46 Inch Reach 5/8 Inch Hx Cold
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Part # 271V59YC
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Important Messages:

  • This product is discontinued.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.


Spark Plug Seat Style:
Spark Plug Reach:
Thread Pitch:
Insulator Type:
Spark Plug Heat Range:
Core Material:
Tip Material:
Nickel Alloy
MFG. Part #:
672 V59YC
Overall Length:
Wrench Size:
Operating Temperature:
59.00 °F
Sold in Quantity:
GTIN Code:


Champion Racing Series plugs include all the features of their conventional plugs, but are built with extreme engine conditions and durability in mind.  For GM & Ford cast iron cylinder heads and some OE design aluminum heads. Will not fit GT40 heads.

  • Nickel Alloy Ground and Center Electrodes
  • Copper Core Center Electrode Allows for Increased Conductivity and Heat Control
  • Peanut Plug
  • 14mm, .460" reach, 5/8" hex
  • Projected Core Nose
  • Heat Range: Cold (59)

Champion Spark Plug Guide (GIF)

Champion Heat Range Guide (GIF)

Champion Conversion Chart (GIF)

Spark Plug Gapping Instructions (GIF)

Autolite, Champion, NGK Cross Reference Chart (PDF)

Item Details

14mm, .460" Reach, 5/8" Hex


While 5/8" (16mm) and 13/16" are the two most common plug hex sizes, plugs can have a hex as small as 8mm or larger than 1".

If you're a tuner or engine builder in search of the perfect spark plug for your current project, pay special attention to the hex size required.  Remember to take into consideration not only the diameter of the cylinder head, but also the added thickness of the plug socket needed for installation.

A spark plugs reach is calculated by the length of the threads.  It is measured from the seat of the plug to the end of the threads.

It should be noted that the reach does not include the electrodes, or an extended metal shell.  When custom-selecting a spark plug, the electrode length and projection should be included in the calculation when taking into consideration the clearance in the combustion chamber.

WARNING: Spark plugs with different seat types are NOT interchangeable.

  • Spark plugs with a flat seat must be used in engines designed for a gasket seal.   
  • Spark plugs with a tapered seat must be used in engines designed for a tapered seal.

 Use of an improper plug in an engine will result in engine damage.  

Some parts are not legal for use in California or other states with similar laws/regulations

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  • In preparation to transplant a 430hp 383 stroker into Project Chevelle, Zach R. made up a set of plug wires for the car. To keep it nice and tidy they needed to be routed just right, be the perfect length and not distract from the engine!
  • Speedway Motors employee Tim M. Decided to take us along as he revives his 241 "Baby Hemi". In this installment, Tim walks us through updating the old wire covers with a nice set of Offenhauser Finned Wire Covers.
  • Having a quality spark plug wire is important to receive the best performance out of your ignition. Here's how to install spark plug wire terminals with Speedway's step by step guide.

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