Cummins 6.7 CCV Delete Benefits and Install Overview

If you run a Ram with the 6.7L Cummins, oily residue in the intake tract or oil mist around the turbo is a common complaint. Much of that comes from the factory crankcase ventilation (CCV) path routing oily vapours back into the intake. For off-road and competition builds, a CCV delete kit is a practical way owners stop feeding the turbo and intake that residue.

Below: what CCV does on the 6.7 Cummins, why people delete or upgrade it, symptoms of CCV-related oil mist, a high-level install overview, and Polar Diesel kit fitment for Ram 2500 / 3500. Written for Canadian diesel owners and shops.

Important: Polar Diesel CCV delete/upgrade kits are intended for off-road and competition use only. Not for public roads or highways. Installation may require aftermarket tuning and other modifications. Removing or disabling emissions-related equipment on a street-driven vehicle may violate federal and provincial laws. Always check local regulations before modifying your truck. This article is practical information only—not legal advice. Polar Diesel does not encourage illegal on-road use.

What the CCV System Does on a 6.7 Cummins

CCV (crankcase ventilation) manages pressure and vapours that build inside the engine as blow-by gases escape past the rings. Those vapours carry oil mist. On the 6.7 Cummins, the factory system typically routes that vapour back into the intake air path so it can be burned rather than vented openly.

That helps control emissions and crankcase pressure under stock conditions. The trade-off: oil mist can coat the turbo compressor, charge-air plumbing, intake valves, and related surfaces over time—especially with towing, short trips, heavy idle, or high mileage.

A CCV delete kit blocks or reroutes that path so crankcase vapours are no longer fed into the intake the stock way. Polar Diesel’s Cummins kit uses a billet PCV plug, a serviceable filter, molded silicone vent hose, and stainless clamps so oily vapour is filtered and managed outside the factory recirculation path.

CCV Delete Benefits for Cummins 6.7

When people search CCV delete benefits Cummins (or “6.7 Cummins CCV delete”), they want fewer oil vapours in the charge-air path. For off-road and competition use where allowed:

  • Cleaner intake air path — Less oily crankcase vapour re-entering the turbo and intake tract.
  • Less turbo oil mist / oily intake — Factory CCV routing is a known contributor to oil film on the compressor and charge pipes.
  • Reduced sticky buildup — Oil mist mixed with soot and heat can foul valves and intake surfaces; cutting that mist helps.
  • Serviceable filter hardware — Polar Diesel’s kit includes a high-quality black-finish serviceable filter, molded silicone vent hose, billet PCV plug, and stainless clamps instead of improvised plugs.
  • Easy install path — Purpose-built for 2007.5–2024 6.7L Cummins Ram applications with a straightforward hardware sequence.

CCV work often sits alongside other off-road emissions-path upgrades on the same Ram. If you are also dealing with cooler issues, see Polar Diesel’s guide to Cummins 6.7 EGR cooler problems and why delete. For the Ford sibling article, see Powerstroke CCV delete benefits and install. Treat fitment, tuning, and legality for each modification separately.

Compliance: Keep stock CCV on vehicles that must remain emissions-compliant for on-road use.

Symptoms of CCV-Related Oil Mist

Not every oily intake is only a CCV issue—turbo seals and overfilling can contribute. Patterns often linked to heavy vapour recirculation on 6.7 Cummins Rams:

  • Oil film in intake piping or the intercooler after removing charge pipes
  • Oily residue near the turbo compressor inlet or housing
  • Sticky buildup on intake valves or surfaces
  • Mist or residue around CCV hoses, the valve cover path, and fittings
  • Faster-than-expected fouling on trucks that idle a lot or tow hard

A qualified diesel tech can separate normal light film from a turbo seal leak or other mechanical problem.

Install Overview (High-Level)

This is not a full DIY guide and is not a substitute for Polar Diesel’s instructions or a professional install. Incorrect CCV work can cause oil leaks, pressure issues, or other damage.

Typical Polar Diesel Cummins 6.7 CCV delete steps at a high level:

  1. Confirm fitment and intended use — Year, engine, cab configuration, and off-road/competition legality. Note any tuning requirements.
  2. Read Polar Diesel’s instructions — Follow the Cummins 6.7 CCV install guide (HTML overview + official PDF) and/or the Instructions hub. Use Polar Diesel’s routing and hardware sequence.
  3. Support the truck safely — Follow safety steps in the PDF; disconnect the battery as directed.
  4. Remove the factory CCV path components — Locate factory CCV / PCV components per the Polar Diesel PDF.
  5. Install Polar Diesel hardware — Billet PCV plug, molded silicone vent hose, serviceable filter, and stainless clamps. Keep hoses clear of heat, moving parts, and sharp edges.
  6. Leak / odour check — Inspect for seepage, secure hoses and clamps, and confirm normal operation for the intended use case. Complete any required supporting mods or tuning.

Not comfortable with diesel intake work? Have a qualified shop install it. Full steps: Cummins 6.7 CCV install guide · Instructions.

Polar Diesel Cummins CCV Kit Fitment

See the CCV Upgrades collection and the Cummins platform hub. Verified live kit:

2007.5–2024 Cummins 6.7L Polar CCV Delete Kit

  • Product page
  • Fitment: 2007.5–2024 6.7L Cummins Ram 2500 / 3500 (pickup and cab & chassis)
  • Highlights: high-quality black-finish serviceable filter, molded silicone vent hose, laser-engraved Polar Diesel logo, billet PCV plug, stainless steel hose clamps, easy/fast installation

Sold for off-road and race use only. Confirm year/model and tuning needs before ordering.

Also useful when packaging an off-road Ram build:

Ready for the Next Step?

For oily intake residue and turbo oil mist on an off-road or competition Ram where local law permits:

Questions on fitment? Contact Polar Diesel before ordering.

FAQ

What are the main CCV delete benefits on a 6.7 Cummins?

Where off-road/competition use is allowed: stop oily crankcase vapours from feeding the intake and turbo, for a cleaner charge-air path and less oily intake / turbo oil mist buildup.

Will a CCV delete fix a leaking turbo seal?

No. It addresses vapour recirculation into the intake. Actual turbo seal leaks need diagnosis and repair. Inspect if you see heavy oil, blue smoke, or sudden oil loss.

Does the Polar Diesel Cummins CCV kit include a filter?

Yes. The kit includes a high-quality black-finish serviceable filter, molded silicone vent hose, billet PCV plug, and stainless clamps.

Is a CCV delete legal on Canadian roads?

Generally, modifying or disabling emissions-related equipment on public-road vehicles is not legal. Polar Diesel kits are for off-road and competition use only. Verify federal and provincial rules. This is not legal advice.

What years does Polar Diesel’s Cummins CCV kit cover?

2007.5–2024 6.7L Cummins Ram 2500 / 3500, pickup and cab & chassis. Confirm config and tuning before purchase.

Should I also do EGR and exhaust at the same time?

Many off-road packages address EGR + CCV + exhaust together. Start from the Cummins hub or a year Power Package, and use the matching install landers. Treat legality and tuning for each modification separately.

Does Polar Diesel offer a Powerstroke CCV kit too?

Yes — see the Powerstroke CCV delete benefits & install article and the CCV Upgrades collection.

About Polar Diesel

Polar Diesel supplies diesel performance parts for Canadian truck owners and shops—including CCV kits for Cummins and Powerstroke, plus EGR, exhaust, and tuning support. Clear fitment, solid materials, and install docs for off-road and competition use where the law allows.

Polar Diesel CCV upgrade/delete products are intended solely for off-road and competition vehicles. Not for use on public roads or highways where emissions laws apply. Check all applicable local laws before purchase or installation. Aftermarket tuning and modifications may be required. Polar Diesel is not responsible for improper use or installation. This content is not legal advice.

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