Mid-USA

Spark Plugs,Champion H8C K Model Spt 1952/78 Cold Plug Replaces Hd 31629-78..Hd #4

MID-18039

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Spark Plugs,Champion H8C K Model Spt 1952/78 Cold Plug Replaces Hd 31629-78..Hd #4
eatures of Spark Plugs:
  • Patented Resistor: High voltage semi conductor resistor for maximum EMI suppression, proven to be the most durable in the industry. Certified compatibility for use in modern computer controlled, distributorless ignition systems
  • ive Rib Near Diamond Hard Insulator: Patented, zirconia toughened alumina insulator for near diamond hardness. ive rib design increases strength 35% while insuring against ignition flashover and securing the plug boot seal
  • Rust Resistant Shell Finish: Zinc plated shell resulting in maximum corrosion resistance. Also serves as thread lubricant to aid in prevention of thread seizure
  • Triple Seal Assembly: Use of upper and lower metal gasket along with sillment seal provides strongest yet least stressful seal known to the industry. Eliminates spark plug failure due to heat or mechanical induced stress
  • Copper Core Center Electrode: Provides maximum heat dissipation and durability
  • Precision Rolled Threads: Conforms exactly to I.S.O. and S.A.E. standards as specified by all engine manufacturers, resulting in easy installation and removal
Champion Copper Plus
OE it Spark Plug with .030 Gap
Fits K Model & Sportster 1952/1978 - 900cc Cold Plug 1000cc
Package of 8, Champion # H8C
Replaces HD Code # 4
Replaces HD# 32301-47A & 31629-78
Spark Plugs,Champion H8C K Model Spt 1952/78 Cold Plug Replaces Hd 31629-78..Hd #4 Harley Mid-USA - K and G Cycles