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Product Information

Product Details
Part No. 104
Warranty Details (30 DAY REPLACEMENT IF DEFECTIVE)
The Copper Plus Spark Plug (RN4C) is engineered for dependable performance and durability, making it an ideal OE-type replacement for small engines. Featuring a copper core center electrode, it ensures superior conductivity and precise heat control, which translates to longer life and consistent performance. The nickel center electrode tip and flat seat design enhance reliability, while the spark plug's ability to resist fouling ensures smooth operation over time. Built to ISO and SAE Standards, it offers proven performance and superior corrosion resistance, making it a trusted choice for maintaining engine efficiency. Whether you're looking for enhanced durability or reliable ignition, this spark plug delivers exceptional value and performance.

Product Features:
  • Copper Plus - Dependable Performance and Durability
  • OE type replacement plug
  • Resists fouling
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Enhanced Reliability: Featuring a nickel center electrode tip and flat seat type, this spark plug ensures reliable performance for small engines.
Specifications
Center Electrode Design:
Standard

Center Electrode Diameter (Inch):
0.1 in

Center Electrode Tip Material:
Nickel

Core Nose Length:
12.7 mm

Electrical Terminal Type:
Removable Nut

Grade Type:
Standard Replacement

Ground Electrode Core Material:
Nickel

Ground Electrode Material:
Nickel Copper Alloy

Ground Electrode Quantity:
1

Ground Electrode Tip Material:
Nickel

Hex Size:
0.813 in

Hex Type:
Hex

Indexed:
No

Installed Height (Inch):
2.15 in

Manufacturer Heat Range:
4

Part Description:
Spark Plug

Pre-Gap Size:
0.025 in

Reach:
0.75 in

Resistor Type:
Yes

Seat Type:
Flat

Thread Diameter:
0.551 in

Washer Type:
Crush

Washer(s) Included:
Yes
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