Product Description
Lock down cylinder pressure on your 6.7L Cummins build. The INDUSTRIAL INJECTION PDM-54774 Fire Ring Gasket Kit is engineered for high boost and extreme cylinder pressure typical of big-turbo and competition setups on 2007.5–2018 Ram 6.7L Cummins trucks. Designed to be used with a machined receiver-groove cylinder head/block and heavy-duty head fasteners.
Fitment
- 2007.5–2018 Ram 2500/3500/4500/5500 with 6.7L Cummins 24V
- Works with stock or performance long blocks when properly machined for fire rings
What’s Included
- Performance head gasket for fire-ring use
- Precision fire-ring wire set
- Installation notes/spec overview (machine receiver-groove required)
Key Features
- Fire-ring sealing for elevated boost and cylinder pressure
- MLS gasket + stainless ring interface to concentrate clamping load at the bore
- Competition-proven approach when paired with quality head studs and proper machine work
Recommended Parts (CPP Internal Links Only)
- ARP 247-4204 625+ Head Stud Kit — 5.9/6.7L Cummins
- MAHLE HS54774-1 Upper Head Gasket Set — 2007.5–2018 6.7L (seals & O-rings to complete the job)
- MAHLE HS54774-4 Upper Set w/ Valve Cover Gasket — 2007.5–2018
- Cummins 5621817 OEM MLS Head Gasket (Std Thickness) — alternative when NOT using fire rings
- 07.5–12 6.7L Cummins Engine Parts | 13–18 6.7L Cummins Engine Parts
Helpful Notes
- Machine work required: Receiver-groove the cylinder head and/or block to the correct diameter/depth for the supplied rings. Verify surface finish for MLS/fire-ring use.
- Use quality fasteners: Pair with ARP head studs and follow final torque values appropriate for studs and lube used.
- Build planning: Confirm piston protrusion, gasket thickness, and ring spec before cutting; measure everything.
Cross-Reference / Alternatives
- Fleece FPE-CUMM-HG-6.7-FR Fire-Ring Head Gasket — fire-ring gasket option
- MAHLE 54774 Head Gasket / Sets — standard MLS (no fire rings)
- Shop All Cummins Gaskets & Seals
FAQ
Do I have to machine the head or block to use this kit?Yes. Fire-ring setups require receiver-groove machining to locate the ring and focus clamping force. This is not a drop-in MLS replacement.
Will this work with factory head bolts?We strongly recommend head studs for fire-ring applications to maintain clamp load under high boost and heat cycles.
Is this suitable for daily-driven trucks?Fire rings are primarily a performance/competition solution. For stock-ish power or towing builds, a quality MLS gasket with proper surface finish and studs is usually sufficient.
What gasket set do I need in addition to this kit?Use a complete upper head set (e.g., MAHLE HS54774-1 or HS54774-4) for intake/exhaust gaskets, injector seals, and associated O-rings to finish the job.
