Coil Adapter with long male terminal for use with 3/4"-20 spark plugs having extended terminal wells; such as Champion RHW77N shown below.

Coil Adapter with standard male terminal for use with 3/4"-20 spark plugs with standing depth terminal wells shown below.

"M" SERIES COIL ADAPTERS
FOR 3/4"-20 SHIELDED SPARK PLUGS

• Available in a variety of lengths (see chart below).
• Available with standard or long length male terminal.
  • Specify standard male terminal when connecting to 3/4"-20 spark plugs with standard terminal wells; such as, BG RB118SD, RBH485SD, or Champion RHM77N, RHM83N, RHM85G.
  • Specify long male terminal when connecting to 3/4" -20 spark plugs with extended terminal wells; such as Champion RHW77N or RHW80N.
• Available with either Teflon® or ceramic insulator. Specify ceramic where temperatures exceed 500°F.
• Rugged stainless steel construction for maximum durability. Spare parts kit available to change insulator assembly when required.
• Most models CSA approved for Class 1, Group D, Division 2 hazardous locations.
• Proper installation torque: 10-25 ft.-lb.

Coil Adapter Model	Length*	Spark Plug Terminal	Insulator	Spare Parts Kit No.
M8-1C	0.75	Long	Ceramic	RM8-1C
M8-1T	0.75	Long	Teflon®	RM8-1T
M8-2C	0.75	Standard	Ceramic	RM8-2C
M8-2T	0.75	Standard	Teflon®	RM8-2T
M15-2C	1.5	Standard	Ceramic	RM15-2C
M28-1C	2.75	Long	Ceramic	RM28-1C
M28-1T	2.75	Long	Teflon®	RM28-1T
M28-2C	2.75	Standard	Ceramic	RM28-2C
M28-2T	2.75	Standard	Teflon®	RM28-2T
M68-1C	6.32	Long	Ceramic	RM68-1C
M68-1T	6.32	Long	Teflon®	RM68-1T
M68-2C	6.32	Standard	Ceramic	RM68-2C
M68-2T	6.32	Standard	Teflon®	RM68-2T
M80-1C	8	Long	Ceramic	RM80-1C
M90-2C	9	Standard	Ceramic	RM90-2C
M108-1C	10.75	Long	Ceramic	RM108-1C
M108-2C	10.75	Standard	Ceramic	RM108-2C
M188-1C	18.75	Long	Ceramic	RM188-1C
M188-2C	18.75	Standard	Ceramic	RM188-2C
M240-2C	24	Standard	Ceramic	RM240-2C
*Length shown is length added to installed height of spark plug (in inches)