Description:
The Champion Copper Plus RF10C Spark Plug (Part #129) is engineered to deliver dependable ignition performance, consistent heat control, and long service life. Featuring a copper core center electrode, this spark plug provides improved conductivity and efficient heat dissipation to help maintain optimal firing conditions and reduce wear.
As part of the Champion Copper Plus line, the RF10C is designed as a standard OE-style replacement for many classic and heavy-duty automotive applications. Its resistor design helps reduce ignition interference for smoother engine operation, while the corrosion-resistant construction ensures durability in demanding environments. Manufactured to ISO and SAE standards, it offers reliable performance across a wide range of vehicles.
With a tapered seat and non-removable terminal nut, the RF10C provides a secure installation and dependable ignition performance.
Features:
-
Copper Plus design for dependable performance and durability
-
Copper core center electrode improves conductivity and heat control
-
Resistor design helps suppress ignition interference
-
Superior corrosion resistance for long service life
-
Accurate heat range control helps extend plug life
-
Built to ISO and SAE standards for proven performance
-
OE-style replacement spark plug
Product Specifications:
-
Part number: 129
-
Plug type: RF10C
-
Classification: Champion Copper Plus
-
Grade type: Standard Replacement
-
Part description: Spark Plug
-
Center electrode tip material: Copper
-
Center electrode design: Standard
-
Center electrode diameter: 0.11 in
-
Ground electrode material: Nickel copper alloy
-
Ground electrode core material: Nickel
-
Ground electrode tip material: Nickel
-
Ground electrode quantity: 1
-
Pre-gap size: 0.030 in / 0.78 mm
-
Hex size: 0.813 in / 20.650 mm
-
Seat type: Tapered
-
Reach: 0.429 in
-
Thread diameter: 18.000 mm / 0.709 in
-
Resistor type: Yes
-
Washer included: No
-
Electrical terminal type: Non-removable nut
-
Manufacturer heat range: 10
-
Indexed: No
-
Installed height: 2.27 in
-
Taper diameter: 0.4 in
-
Subject to Prop 65: No
Fitment:
The RF10C spark plug fits a wide range of classic and heavy-duty vehicles including select models from:
-
Dodge – D100, D200, D250, D300, D350, Ram 3500, W100, W200, W250, W300, W350
-
Ford – Econoline, E-Series vans, F-100, F-250, F-350, F-500, F-600, F-700, Ranchero, Del Rio Wagon, P-Series trucks
These applications include engines such as Ford 240/300 inline-six, Ford FE-series V8 engines, and Dodge 318 and 360 V8 engines, among others. Always confirm compatibility with your vehicle’s engine specifications.
