Industrial PDM-4068C 4.550 Fire Ring Head Gasket Kit | 1989-1998 Dodge RAM 2500/3500 5.9L 12V Cummins

Features:

• Includes fire rings and high-quality gasket
• 4.550-inch fire ring diameter
• Fire ring thickness is .105 inches
• Groove depth ranges from .034 to .036 inches
• Ideal for high-performance engine builds
• Prevents head lift under extreme boost
• Compatible with machined cylinder heads
• Instructions included for machine shop use
• Not compatible with factory head bolts

Fire Ring Head Gasket for 5.9L Cummins 12V

If you’re building a 12-valve Cummins and planning to push serious boost, a standard head gasket just won’t cut it. That’s where the Industrial Injection PDM-4068C Fire Ring Head Gasket Kit comes in. Designed for 1989–1998 Dodge 5.9L Cummins engines, this kit is built specifically for high-performance applications where cylinder pressures go way beyond what the factory intended. At the heart of this setup are precision-cut fire rings with a 4.550-inch diameter and .105-inch thickness, designed to provide a positive seal between the head and block under extreme conditions. When boost pressure rises, the fire ring takes the hit—keeping combustion pressure where it belongs and helping prevent head lift or blown gaskets. To use this kit, you will need to machine grooves into your cylinder head, but that added step is what gives this system its strength. Industrial even includes detailed instructions if you're working with a machine shop, or you can pair the kit with one of their pre-grooved heads for a streamlined install.

Fits: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 Dodge 5.9L Cummins 12V

Note: Do Not Use Factory Head Bolts