Champion
Copper Plus

Champion 129 Spark Plug

Brand Champion 129
Center Electrode Diameter (Inch) 0.11
Center Electrode Tip Material Nickel
Classification Champion Copper Plus
Electrical Terminal Type Non-Removable Nut
Ground Electrode Core Material Nickel
Ground Electrode Material Nickel Copper Alloy
Ground Electrode Quantity 1
Hex Size 0.813
Hex Size 20.650
Hex Type Hex
Installed Height (Inch) 2.27
Manufacturer Heat Range 10
Plug Type RF10C
Pre-Gap Size 0.030
Pre-Gap Size 0.78
Reach 0.429
Resistor Type Yes
Seat Type Tapered
Taper Diameter (Inch) 0.4
Thread Diameter 0.709
Thread Diameter 18.000
Product line Copper Plus
Fits Dodge and Ford · 139 vehicles

Copper core electrode. Improves conductivity and heat control for dependable performance.

Nickel alloy electrodes. Help promote consistent wear and long service life.

Resistor design. Helps reduce electrical noise for smoother ignition performance.

Cross-references Anchor 3064, Autolite 124 and Autolite 2976 for the same application. See all 64.

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Champion Copper Plus 129 Spark Plug

Champion Copper Plus 129 is a tapered-seat spark plug built for dependable ignition performance in older gasoline engines. Its copper core electrode improves conductivity and heat control, while nickel center and ground electrode materials support consistent wear characteristics for everyday driving.

For Ford F-100, F-250, F-350, and E-100 Econoline applications, this Champion spark plug matches OE-style fitment details and the RF10C plug type used across many classic truck and van engine setups. The Champion Copper Plus line focuses on straightforward, serviceable ignition performance with a resistor design and a pre-gap specification that supports accurate tuning.

Key Features

  • Part number 129 in the Champion Copper Plus line
  • Copper core electrode for improved conductivity and heat control
  • Nickel center electrode tip and nickel ground electrode core material
  • Resistor type spark plug for reduced electrical noise
  • Tapered seat design with RF10C plug type
  • Pre-gapped at 0.030 in / 0.78 mm
  • OE-style secondary ignition service part for classic Ford and Dodge applications

Product Details

Champion Copper Plus 129 is built around a copper core electrode, which helps move heat away from the firing tip and supports stable spark delivery. The nickel tip and nickel copper alloy ground electrode are selected for dependable wear in secondary ignition service. With a 0.709 in thread diameter, 0.429 in reach, 0.813 in hex size, and tapered seat, this spark plug is specified for engines that call for the RF10C configuration. The Champion Copper Plus 129 is a practical choice for maintaining ignition performance in vehicles such as the Ford F-100, Ford F-250, Ford F-350, and Dodge D250 or D350 platforms listed in the fitment data.

This part cross-references Champion Spark Plug 113 and 344 for the same application.

Common Issues It Can Address

  • Hard starting caused by worn or inconsistent spark plugs
  • Rough idle from weak ignition output
  • Misfire concerns related to aged secondary ignition components
  • Reduced throttle response from degraded plug performance
  • Service replacement needs on classic Ford and Dodge truck engines

Installation Notes and Tips

Verify the engine’s required plug type, seat style, reach, and gap before installation. This plug is pre-gapped at 0.030 in, while several listed applications note a 0.035 in gap requirement, so confirm the correct specification for the exact engine code and model year before use. Check the ignition system condition, inspect plug wires and distributor components, and torque the plug to the manufacturer’s specification for the vehicle.

Compatible With 1958-1974 Ford F-100, 1960-1974 Ford F-250, 1960-1974 Ford F-350, 1969-1974 Ford E-100 Econoline, and listed 1987-1994 Dodge D/W-series truck applications where RF10C is specified.

Quality Assurance

Champion Copper Plus plugs are built for dependable secondary ignition service with a copper core design that supports conductivity and heat control. Part number 129 is specified as a resistor spark plug and follows the listed OE-style fitment details for the applications shown.

This part fits 139 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1994DodgeRam 35005.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1993DodgeD2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1993DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1993DodgeW2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1993DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1992DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1992DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1991DodgeD2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1991DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1991DodgeW2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1991DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1990DodgeD2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1990DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1990DodgeW2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1990DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1989DodgeD2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1989DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1989DodgeW2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1989DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1988DodgeD2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1988DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1988DodgeW2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1988DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1987DodgeD2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1987DodgeD3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1987DodgeW2505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1987DodgeW3505.9LV8N/AGap 0.035 (in); Actual OE Part; Plug Type Number RF10C; Copper Plus
1974FordE-100 Econoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordE-100 Econoline4.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordF-1004.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordF-2504.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1974FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1973FordE-100 Econoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1973FordE-100 Econoline4.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1973FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1973FordF-1004.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1973FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1973FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1973FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1973FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1972FordE-100 Econoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1972FordE-100 Econoline4.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1972FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1972FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1972FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1972FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1972FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1972FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1971FordE-100 Econoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1971FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1971FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1971FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1971FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1971FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1971FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1970FordE-100 Econoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1970FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1970FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1970FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1970FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1970FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1970FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1969FordE-100 Econoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1969FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1969FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1969FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1969FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1969FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1969FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1968FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1968FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1968FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1968FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1968FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1968FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1967FordEconoline3.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1967FordF-1003.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1967FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1967FordF-1005.8LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1967FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1967FordF-2503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1967FordF-2505.8LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1967FordF-3503.9LL6N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1967FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1967FordF-3505.8LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-1005.9LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1966FordF-1005.8LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1966FordF-2505.9LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-2505.8LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-3505.9LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1966FordF-3505.8LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1966FordF-3505.9LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-1005.9LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-1005.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-1004.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1965FordF-2504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1965FordF-2505.9LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-2505.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-3505.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-3505.9LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1965FordF-3504.9LL6N/AOE Type; Gap 0.030 (in); Plug Type Number RF10C; Copper Plus
1965FordF-3505.9LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1964FordF-1005.9LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1964FordF-1004.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1964FordF-2504.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1964FordF-2505.9LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1964FordF-3504.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1964FordF-3505.9LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1964FordF-3505.9LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1963FordF-1004.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1963FordF-1005.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1963FordF-2505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1963FordF-2504.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1963FordF-3504.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1963FordF-3505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1962FordF-1004.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1962FordF-1005.4LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1962FordF-2505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1962FordF-2504.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1962FordF-3504.3LL6N/AGap 0.030 (in); Plug Type Number RF10C; Copper Plus
1962FordF-3505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1961FordF-1005.4LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1961FordF-2505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1961FordF-3505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1960FordF-1005.4LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1960FordF-2505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1960FordF-3505.4LV8N/AOE Type; Gap 0.035 (in); Plug Type Number RF10C; Copper Plus
1959FordF-1005.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1959FordF-2505.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1959FordF-3505.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1958FordF-1005.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1958FordF-2505.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
1958FordF-3505.8LV8N/AGap 0.035 (in); Plug Type Number RF10C; Copper Plus
Directly replaces or cross-references 64 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 3064Autolite — 124Autolite — 2976BENDIX PREMIUM BRAKE SHOES — 804Champion Spark Plug — 113Champion Spark Plug — 344Continental — 5014Gates — 2210Hayden — 127Hygrade Tuneup — 584Karlyn — 115Karlyn — 784Pro-Tec — 11718F318RF384T85T3055834248MI428916582300326A6FSA7FA7FSAR5FSAR6FSAR6FS11BG883TBRF3MBSF3BSF6BSF31BSF314BTF1BTF3BTF6BTF31BTF314C83TC84TCR83TD7AD7ACD8AD8ACF10F10CMA16RUMA20RUMA20RU11R83CTR83TR85TR86TRF10RF10CRF12RF80NRF125T5CT6CT6RCTR5CXF10