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MERCEDES BENZ BOSCH ORIGINAL NOS BLACK COIL

"WITH ORIGINAL BOSCH COIL BRACKET "

" MADE IN GERMANY " SUPER RARE

A PERFECT OEM COIL FOR MERCEDES BENZ IGNITION

FOR A PERFECT RESTORATION

The Mercedes Benz basically utilize two types of ignition coil

during production from 1955 to 1981 , up to mid 1969 the factory installed coil was the Bosch part#

0221119021 so called the "black coil " after mid 1969 they introduce the Transistorized Ignition

which utilize a module to enhance the system , the coil for those models was Bosch part# 0221122001

also called "the blue coil"

Technical Note: On cars equipped with a non -transistorized ignition or a conventional ignition

the installation of the Black Coil improves considerably the ignition spark however

the use of the 0.9 ohms ballast resistor is a must since the points are subject to a

arcing effect , the current flow between them is high , which can cause pitting

or damage on the surfaces, a condenser as part of those ignition system also helps

to reduce arcing , the resistor also decrease the voltage input on the primary

windings of the coil preventing overheat and possible damage to it.

On models equipped with transistor module the arcing is drastically reduces since

less than a ampere flows through the points , however the resistor should be installed to

protect the black coil and improve its longevity , the blue coil originally installed on those

models has a distinct construction, the thickness and ratio of the coil windings are designed for

a discharge of the transistor module , the installation of the black coil can be done

, however it is possible that the life time durability of the black coil might be reduced.

Ignition Coil Types:

NOTE: "BOSCH CLASSIC IGNITION COILS ARE OUT OF PRODUCTION"