Collection: Cummins CCV

Inside the 6.7L Cummins CCV System – Managing Pressure in a High-Output Diesel

Since 2007.5, the 6.7L Cummins diesel engine found in RAM 2500 and 3500 trucks has been a workhorse for heavy-duty, commercial, and off-road applications. As a high-compression, direct-injected inline-six platform, the Cummins engine naturally generates a significant amount of blow-by pressure—making the CCV (Crankcase Ventilation) system a critical component in maintaining engine balance.

In its stock form, the CCV system relies on an integrated breather path within the valve cover and the CV52001 CCV filter to separate and recirculate oil vapor back into the intake. While this closed-loop design meets EPA emissions requirements, it quickly becomes problematic under heavy load, high RPM, or extended operation.

The 6.7 Cummins CCV filter is the system’s last line of defense—and once it becomes saturated, it can trigger a chain reaction of issues: oil leaks at the turbo inlet, increased oil consumption, and premature soot buildup in the EGR system. These problems are especially common in commercial RAM chassis like the 5500 series.

The Stock CCV Filter Is More Than a Mess—It’s a Pressure Problem Waiting to Happen

Many RAM owners assume the 6.7 Cummins CCV filter (like the CV52001) is simply designed to trap oil mist—but in reality, it also regulates crankcase pressure. As the filter becomes saturated over time, the CCV system's ability to vent pressure diminishes, leading to pressure buildup inside the crankcase.

This imbalance often causes turbo seal leaks, valve cover seepage, and crankshaft seal distortion—symptoms that are frequently misdiagnosed as oil brand issues or piston wear. These problems escalate rapidly in high-heat environments or during frequent towing and hill climbs, where CCV filter saturation may occur in less than 40,000 miles.

Rather than repeatedly replacing filters, many Cummins owners opt for a permanent solution: installing a ccv delete 6.7 cummins or a 6.7 cummins ccv filter delete kit to eliminate the bottleneck entirely and restore proper pressure balance.

Delete vs. Replace – Why More 6.7 Cummins Owners Are Ditching the Filter

While the factory recommends replacing the ccv filter cummins 6.7 every 67,500 miles, many RAM truck owners are beginning to question the practicality of this recurring maintenance. For commercial vehicles, tow rigs, or high-use fleets, frequent CCV filter replacements come with not only parts costs, but also valuable downtime.

Installing a 6.7 cummins ccv delete kit changes that logic. By eliminating the oil vapor recirculation loop and routing crankcase gases to a catch can or atmospheric vent, owners bypass filter life limitations entirely—and actively solve the pressure buildup and intake contamination at the source.

An added benefit? Lower intake temperatures. In the factory setup, blow-by gases are fed back into the turbo inlet, coating the intercooler and increasing intake air temps. A reroute kit stops this from happening, giving your engine cleaner, cooler air to work with.

SPELAB CCV Upgrade Options for Cummins – Full Compatibility for 2007.5–2024 Platforms

SPELAB offers a complete range of CCV delete and reroute kits for the 2007.5–2024 RAM 6.7L Cummins diesel engine, including fitment for RAM 2500, 3500, 4500, and 5500 Chassis Cab models. All ISB 6.7L 24V inline-six configurations are supported—whether automatic or manual transmission.

Here’s a breakdown of SPELAB’s core products and their intended use cases:

Core Kit Types:

• CCV PCV Reroute Engine Ventilation Kit
  Best suited for 2007.5-2024 RAM 2500/3500 models. This is a simple atmospheric-vent system ideal for off-road, farm, or non-road use.

• Updated CCV Reroute/Delete Kit (with Catch Can)
  Designed for 2007.5-2024 RAM 2500–5500 platforms, with optimized hose routing and engine bay layout. Perfect for high-mileage trucks, towing applications, or tuned builds.

• EGR/DPF/CCV Delete All-in-One Kit
  Works with popular tuners like EFI Live, RaceME, or MM3. Compatible with all 2010–2018 6.7L Cummins engines, this kit is aimed at users looking for max ventilation and system simplification.

All SPELAB kits include CNC-machined fittings, reinforced silicone hoses, and Cummins-specific mounting hardware to ensure a clean, interference-free installation across all RAM models.

Engine Bay Routing Tips – Creating a Safe Vent Path for Your Cummins CCV Delete Kit

When installing a 6.7 cummins ccv delete kit, it’s important to recognize that engine bay layouts differ slightly across RAM model years. For example, 2010–2012 RAM 2500 and 3500 trucks have a tighter passenger-side engine bay, with the exhaust manifold, main harness, and airbox located closer together. This can make hose routing more challenging.

To ensure proper airflow and long-term reliability, here are some key routing recommendations when installing a CCV PCV reroute engine ventilation kit:

• Keep hoses away from high-temperature zones like the exhaust manifold or EGR cooler

• Mount your breather filter or catch can near the passenger-side shock tower for easier access

• On commercial trucks like RAM 4500/5500, consider routing through the frame or chassis support rails to create a clear, cool discharge path

• For vent-to-atmosphere setups, add a breather filter to prevent dust from entering during pressure fluctuations

Proper routing and placement reduce the chance of heat damage, hose failure, or system blockage—and ensure your CCV reroute kit performs at its best without triggering fault codes.

Post-Delete Maintenance – From Filter Replacement to Oil Vapor Management

Once you’ve installed a ccv delete cummins 6.7 or a 6.7 cummins ccv filter delete kit, you’ll no longer need to replace the stock CV52001 filter—but that doesn’t mean the system is completely maintenance-free. Since a reroute system vents blow-by gases outside the intake tract, it still accumulates oil mist and condensation over time.

To keep your system running clean and efficiently, follow these suggested maintenance practices:

• With a catch can setup, check and drain the reservoir every 3,000–5,000 miles, depending on your driving style, load conditions, and engine wear

• Inspect hoses and fittings regularly for aging, leaks, or loosening—especially in high-heat or dusty environments

• Deep-clean the catch can every 10,000–15,000 miles to prevent carbon buildup and ensure clear airflow

• For breather filter systems, clean or replace the filter element during routine oil changes

This shift from “scheduled replacement” to “visual check + vapor control” offers lower maintenance costs, requires no ECU tuning or tools, and is ideal for high-mileage or commercial RAM applications.

Legal Notice – When and Where a CCV Delete Kit Is Allowed

While a 6.7 cummins ccv delete kit offers clear benefits in pressure control and maintenance reduction, it still qualifies as an emissions system modification. According to U.S. EPA standards—and stricter states like California under CARB regulations—altering or removing emissions-related equipment may be illegal for vehicles driven on public roads.

To help users stay compliant, SPELAB clearly states:

• These kits are not approved for use on registered highway vehicles

• Recommended for off-road, agricultural, racing, or non-registered trucks

• Use of this product may result in inspection failure or warranty void in certain jurisdictions

• Always check your local emissions laws before purchasing or installing this kit

SPELAB is committed to delivering high-performance diesel upgrades while fully respecting emissions standards. Please use responsibly and within appropriate applications.

Recommended Upgrade Combos – Maximize the Value of Your 6.7 Cummins CCV Delete

For Cummins owners focused on performance, reliability, or heavy-duty use, the CCV delete kit is just one piece of the puzzle. When paired with complementary upgrades, it enhances overall engine health, reduces system strain, and streamlines long-term maintenance.

Here are SPELAB’s top recommended upgrade combinations:

• CCV Delete + Coolant Bypass Kit
  Prevents rear-cylinder hotspots and balances coolant flow—ideal for towing in hot climates or mountain terrain.

• CCV Delete + EGR Delete Kit
  Blocks both oil mist and exhaust soot from entering the intake system, minimizing buildup and DPF stress.

• CCV Delete + Intake Elbow/Boost Tube Upgrade
  With no oil vapor contaminating the intake, airflow mods become more effective, increasing boost response and combustion efficiency.

• CCV Delete + Internal Catch Can (with drain)
  Great for daily drivers or weekend tow rigs—keeps the system closed while allowing easy maintenance.

• CCV Delete + ECU Tuner (EFI Live, RaceME, MM3)
  Improves fuel delivery and crankcase pressure response for more power, better throttle feel, and cleaner burn.

By combining these upgrades, users get the most out of their ccv delete 6.7 cummins system—protecting engine components and improving every aspect of performance.