Product Description

Industrial Injection 631601 Dodge Fuel Rail Plug – Fits 2013–2018 Ram 6.7L Cummins

Fix low-rail-pressure issues the right way. The Industrial Injection 631601 Fuel Rail Plug replaces the factory pressure relief valve on 2013–2018 Ram trucks with the 6.7L Cummins, helping prevent pressure bleed-off that causes power loss under load. Machined from durable stainless and designed for a clean, direct install, this is a proven upgrade for tuned and hard-working trucks alike.

Key Features

• Direct-fit for 2013–2018 Ram 2500/3500/4500/5500 6.7L Cummins
• Replaces factory pressure relief valve to help maintain commanded rail pressure
• Machined stainless construction; quality fit & finish
• Ideal companion to CP3/dual CP3 upgrades, injectors, and lift pumps

Verified Fitment

• Ram 2500/3500/4500/5500 with 6.7L Cummins: 2013, 2014, 2015, 2016, 2017, 2018

Recommended Companion Parts

• Fuel System Components — 13–18 Ram 6.7L
• Fuel Rails, Sensors & Plugs — 13–18 Cummins
• CP3 Pumps & Components — 13–18 Cummins
• Dual CP3 Kits & Related — 13–18 Cummins
• Bosch 0445226126 Fuel Rail — 13–18 Cummins
• Exergy Complete Fuel Rail (’13–’16)

Specifications

FAQ

Q: What does a rail plug do?
A: It replaces the factory rail pressure relief valve so the system can maintain commanded fuel rail pressure under heavy load, helping avoid pressure drop and power loss.

Q: Is tuning required?
A: No special tuning is required for the plug itself. It’s commonly used alongside tuning and fuel system upgrades.

Q: Will this fit my 2013–2018 Ram cab & chassis?
A: Yes—if it’s equipped with the 6.7L Cummins fuel rail used in 2013–2018 applications.

Q: What parts pair well with this?
A: Consider upgraded rails, sensors, CP3 or dual CP3 kits, and quality lift pumps. See our recommended links above.

Notes

• For race/competition use, verify local regulations before modifying emission-related components.