Spark Plug Champion FB78WW, Champion FB78WW
Available from factory - Estimated to ship in: 5 - 8 days.
Champion Bridge Iridium Spark Plug plug part number: FB78WW
The dual iridium electrodes combined with the Bridge design and patented advanced weld process provide more than 2 times the service like of traditional J-gap plugs.
Ideally suited for fuel-fed , large bore pre-chambers gas engines where high load and high temperatures operating conditions are prevalent. The fixed gap provided by the Bridge design does not move under extreme thermal cycling conditions like many standard j-gap plugs, eliminating the need for re-gapping procedures.
Fixed Electrode gap
Fully fixed Bridge electrode design prevents gap relaxation from occurring
High-alumina content insulator
High-durability ceramic leading to increased dielectric and mechanical strength
IFISS Technology
Maintains tight resistance window across varying voltages. Ideal for high load high temperature running applications
Hot lock Shell assembly
Maximizes the lock of the core assembly with the shell, reducing internal leakage and “lift and set” at high combustion pressures
Technical Specifications:
Thread size: M18 x 1,5 mm
Reach: 13/16" (20,6mm)
Hex size: 7/8" (22,2mm)
Gap: 0,011 (0,30mm)
Torque: 50 - 60 Nm
Cross References:
Champion/Federal Mogul: FB78WW
Motortech: MBP1800
Wartsila: PAAF092377
Rolls Royce: 710875, 707447 / FB11047A
ERS: FT00078, FT00085 (longest lasting plugs in the group, pre-chamber style)
Engine Application:
Caterpillar: 3520B, GCM 34
Rolls Royce Marine: B-gas engine
MAN: V35 / 44G
Wartsila: 34SG / 50SG / 20V34SG
HHI: H35 / 40GV
