CETRA™ EXTENSIONS PERMIT THE USE
OF LOWER COST TOP THREADED SPARK
PLUGS WITH BG’S NEW CETRA LEADS. . .

And BG’s Unique Cetra™ extensions extend plug life too!

  • Teflon® coated Viton “O” Ring seals tightly on the spark plug insulator. Because the voltage necessary to “flashover” the spark plug insulator is increased, spark plugs will operate at larger gaps that previously resulted in plug failure.
  • Greatly reduces spark plug cost by permitting the use of top threaded spark plugs instead of shielded spark plugs.
  • High alumina ceramic insulator prevents dielectric breakdown.
  • May be used with Cetra™ leads or conventional shielded leads.

HOW TO ORDER

Select desired length, spark plug, and lead termination and place the corresponding “TYPE” numbers here:

EXTENSION LENGTH	TYPE
7.75 inches	78
10.25 inches	102
12.25 inches	122
14.25 inches	142

SPARK PLUG MODEL	TYPE
RTM77N, RTM79, ALL TOP
THREADED ALTRONIC	1
RTB80N, RTB77WPCC	2
RTM77PP, RTB78N	3

LEAD TERMINATION*	TYPE
Standard length terminal	S
Extended length terminal	E
*Extension has a female terminal on top that accepts spark plug leads with (1) standard male terminals such as P/N's M531, 21011 & 21981-1, or (2) extended male terminals such as 21143 & 21102. See page 45.

Catalog Index