Ford Motorcraft Autolite BRF42 Spark Plugs

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Ford Motorcraft Autolite BRF42 Spark Plugs

With few exceptions, the Autolite BRF42 was, throughout the 1960s and much of the 1970s, the spark plug of choice of The Ford Motor Company finding widespread usage in the vast majority of 4, 6, and 8 cylinder engines, including the 122, 221, 240, 260, 289, 302, 351, 352, 390, 406, 427, 428, 429 and 460 CID.

Last produced approximately twenty five years ago and, therefore, growing increasingly difficult to locate, they are much sought by collectors of vintage and classic Ford automobiles—particularly the high performance muscle cars such as the legendary Mustang—who strive to achieve purity and originality of restoration as well as optimal engine performance.

Comments and Observations:

Born of necessity and in response to the avalanche of complaints received from baby boomers who failed to appreciate the obstreperous cacophony of spark plug generated static which tended to render their favorite Doo Wop tunes unintelligible, the Resistor Spark Plug was first produced by Autolite in 1949. Not only did this wonderful invention succeed beautifully in improving radio reception by effectively eliminating the EMI (electromagnetic interference) and/or RFI (radio frequency interference), it also prolonged electrode life. Thus, our forebears were no longer forced to hurriedly pull off the tarmac and imperil their very lives in order to enjoy the latest Buddy Holly or Elvis opus.

At the instant the coil induced spark traverses the measured gap which lies between the two electrodes, a burst of high frequency energy (an electromagnetic field) is generated. By placing a 5k ohm ceramic resistor in the spark plug (hence the "R" in BRF42), the EMI/RFI is effectively suppressed.
Succinctly expressed, the BRF42 is created by placing a 5K ohm ceramic resistor in a BF42.

While radio interference is, indeed, an annoyance, modern vehicles incorporate a plethora of highly sensitive electronic devices that are absolutely essential to normal operation and safety. The use of non-resistorized spark plugs could seriously impair the operation of or render inoperative such critical systems as the diverse onboard computers and GPS system, resulting in such undesirable anomalies as erratic idle, high-RPM misfire, engine dieseling, loss of power, abnormal combustion, as well as possible damage to various very expensive ignition components.

Condition:

We are pleased to be able to make available a collection of twenty-one (21) Ford Motorcraft Autolite BRF42 Spark Plugs which were purchased new in 1972 (the individual boxes are imprinted with the date—"1966"), but never used. All plugs are packaged in the original factory boxes.

Condition: New (Unused)

Our Price: $147.00 USD

Specifications: 1

Quantity Available:	One Set of Twenty-One (21) Ford Motorcraft Autolite BRF42 Spark Plugs
Part Number:	Ford Motorcraft Autolite BRF42 Spark Plugs
Manufactured by:	Autolite
Country:	USA
Weight:	3 lbs. 3.5 ozs.
Shipping:	$6.85 when shipped to a destination within the USA
Notes:	The photographic representations of "Ford Motorcraft Autolite BRF42 Spark Plugs," which are displayed in various locations throughout this site, were effected by means of a FujiFilm FinePix 2800 Zoom digital camera with a resolution setting of 640 x 480 pixels. Although we craved and, therefore, experimented with higher resolutions, the resulting page load times proved insufferable to all but the most resolute of our visitors.
Footnotes:	1We have, to the utmost of our abilities, endeavored to ensure that all descriptions, depictions, representations, and measurements are honest, accurate, and unabridged. Utilizing fully the resources and equipment available to us, extensive and exhaustive research has been conducted on each object listed. While we cannot guarantee that absolute precision has been attained, we certify, with neither hesitation nor reservation, that our very best efforts have been expended in an attempt to realize this paradigm.

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