My Cart

Your order is not eligible for free shipping as it contains an item that must ship freight.

You are $75.00 away from FREE shipping!

You've Achieved Free Shipping!

No items in cart.

Subtotal:
$0.00

Free Shipping

Expert Customer Service

Your order is not eligible for free shipping as it contains an item that must ship freight.

Champion 978 Small Engine Spark Plug RY4C

MPN: CP978

$14.11
Copper plus small engine spark plug RY4C. Thread diameter: 10mm, thread reach: 9.5mm, seat type: tapered, hex size: 16mm, projection: non-projected, construction: standard.

  • Resists fouling
  • Superior corrosion resistance
  • Dependable performance and durability
  • Increased conductivity and heat control for good overall wear
  • OE replacement plug for lawn, garden, and similar small engine machines

Find Parts With Part Diagrams

We get it, fixing outdoor power equipment can be hard, but finding the right part is easier with our Part Lookup Tool.

Go to Parts Lookup Tool