Champion 71 RC12YC Spark Plugs, Edel Flathead Ford Head Set of 8

#9100094

Champion 71 RC12YC Spark Plugs, Edel Flathead Ford Head Set of 8

Recommended for all 2006 and up Edelbrock flathead Ford cylinder heads
Guaranteed to deliver quick starts, good fuel economy and smooth acceleration
Engineered to work very well with our flathead ignitions

$34.99

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$35.12

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Product Summary

Gasket Spark Plug Seat Style, 0.75" Spark Plug Reach

Recommended for all 2006 and up Edelbrock flathead Ford cylinder heads
Guaranteed to deliver quick starts, good fuel economy and smooth acceleration
Engineered to work very well with our flathead ignitions
Features a 14mm thread pitch that has a 3/4" reach
Made from a copper core material and has a nickel alloy tip

Comes as a Kit

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Key Specs

Brand	Champion
Thread Pitch	14mm

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Details

These copper core spark plugs are recommended for all 2006 and up Edelbrock flathead Ford cylinder heads. They are guaranteed to deliver quick starts, good fuel economy and smooth acceleration. Works very well with our flathead ignitions.

5/8" Hex
3/4" Reach
14mm Threads
Set of 8

Application

Spark Plug Application Chart

Charts

Spark Plug Gapping Instructions (GIF)

Guides & Documents

Spark Plugs Installation Instructions (9100094)

Performance Spark Plug Buyer’s Guide

Specifications

KEY SPECS
Brand	Champion
Thread Pitch	14mm

GENERAL
Spark Plug Seat Style	Gasket
Spark Plug Reach	0.75"
Resistor	Yes
Insulator Type	Projected
Spark Plug Heat Range	12
Core Material	Copper
Tip Material	Nickel Alloy
Wrench Size	5/8"
Sold in Quantity	Kit

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Questions & Answers

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What should the gap be?

by Chris

• 2 years ago

1 answer

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Fitment

1939-1940 Ford 1 Ton Pickup

239 Ford Flathead V8

1941-1947 Ford 1 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1938 Ford 1/2 Ton Pickup

221 Ford Flathead V8

1939-1947 Ford 1/2 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1938 Ford 3/4 Ton Pickup

221 Ford Flathead V8

1939-1947 Ford 3/4 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Club

255 Ford Flathead V8
337 Ford Flathead V8

1952 Ford Country Sedan

239 Ford Flathead V8

1953 Ford Country Sedan

255 Ford Flathead V8
337 Ford Flathead V8

1952 Ford Country Squire

239 Ford Flathead V8

1953 Ford Country Squire

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Crestline

255 Ford Flathead V8
337 Ford Flathead V8

1949 Ford Custom

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Customline

255 Ford Flathead V8
337 Ford Flathead V8

1939-1940 Ford Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1946-1948 Ford Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford F-100

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford F-250

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford F-350

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F1

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F1

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F2

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F2

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F3

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F3

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Mainline

255 Ford Flathead V8
337 Ford Flathead V8

1942 Ford Model 21 A Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1938 Ford Model 81 A

221 Ford Flathead V8

1938 Ford Model 82 A

221 Ford Flathead V8

1938 Ford Model 85

221 Ford Flathead V8

1953 Ford Ranch Wagon

255 Ford Flathead V8
337 Ford Flathead V8

1938 Ford Sedan Delivery

221 Ford Flathead V8

1939-1940 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1941 Ford Sedan Delivery

239 Ford Flathead V8

1942 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1946-1947 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Sunliner

255 Ford Flathead V8
337 Ford Flathead V8

1942 Ford Super Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1946-1948 Ford Super Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Victoria

255 Ford Flathead V8
337 Ford Flathead V8

1952-1953 Mercury Custom

255 Ford Flathead V8
337 Ford Flathead V8

1946-1948 Mercury Mercury

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Mercury Mercury

255 Ford Flathead V8
337 Ford Flathead V8

1950-1953 Mercury Monterey

255 Ford Flathead V8
337 Ford Flathead V8

1941 Mercury Series 19A

239 Ford Flathead V8

1942 Mercury Series 29A

221 Ford Flathead V8
239 Ford Flathead V8

1939 Mercury Series 99A

239 Ford Flathead V8

1940 Mercury Series O9A

239 Ford Flathead V8