Usage:
G3606 (3XF),
G3608 (4WF),
G3612 (1YG),
G3616 (4CG) Engines
Description of Change: New O-ring seals (1) are available for use in high jacket water temperature [100°C + (212°F +)] applications. The illustration shows the locations of the new O-ring seals (1). The new O-ring seals are made from a material that maintains sealing capability at higher temperatures.
Locations of the new 170-8690 O-Ring Seals (1) in the cylinder head group.
Adaptable To: The new 170-8690 O-Ring Seal is the recommended replacement for the 2N-3350 O-Ring Seal in high jacket water temperature [100°C + (212°F +)] applications. The 2N-3350 O-Ring Seal may still be used in for standard jacket water temperature [85°C to 100°C (185 to 212°F)] applications. Eight 170-8690 O-Ring Seals are required for each cylinder head.
The new 170-8690 O-Ring Seal has replaced the 2N-3350 O-Ring Seal in 171-1496 Single Cylinder Head Gasket Kit.