The APDTY 138700 crankcase ventilation filter breather element is a direct-replacement diesel engine component designed for 6.7L Cummins ISB engines. This filter captures oil mist and contaminants from crankcase blow-by gases before they are routed back into the intake system, preventing oil buildup in the intake manifold and reducing emissions. It replaces OE part numbers CV52001, 4936636, and 68002433AB across Ram heavy-duty pickups (2500-5500), Ford F650/F750 medium-duty trucks, and select Freightliner, International, and Blue Bird vehicles equipped with the Cummins 6.7L diesel.
Key Takeaways
- Direct replacement for crankcase ventilation filters on 6.7L Cummins ISB diesel engines
- Fits 2007-2024 Ram 2500/3500/4500/5500, 2008-2015 Ford F650/F750, and select medium-duty commercial trucks
- Replaces OE numbers CV52001, 4936636, and 68002433AB
- Prevents oil contamination in the intake system and maintains proper crankcase pressure
- Single filter element—verify exact fitment using the live compatibility chart before purchase
Buy APDTY 138700 directly from APDTY
What Does the Crankcase Ventilation Filter Do?
The crankcase ventilation (CCV) filter on 6.7L Cummins diesel engines serves a critical emissions and engine-protection role. During combustion, high-pressure gases slip past piston rings into the crankcase—a process called blow-by. The CCV system vents these gases from the crankcase, but raw blow-by contains oil vapor, soot, and acidic combustion byproducts. The CCV filter element captures oil droplets and particulates before the cleaned gases are recirculated into the intake manifold. This prevents:
- Oil contamination of the intake manifold and intercooler
- Carbon buildup on intake valves and turbocharger components
- Increased emissions from unburned hydrocarbons
- Excessive crankcase pressure that can blow out gaskets or seals
On the Cummins ISB 6.7L, the CCV filter is a serviceable element housed in a canister typically mounted near the valve cover or engine block. APDTY 138700 replaces the internal filter media, restoring proper filtration without requiring replacement of the entire housing.
What Are the Symptoms of a Failed CCV Filter?
A clogged or saturated crankcase ventilation filter creates backpressure in the crankcase and allows unfiltered oil mist into the intake. Common symptoms include:
- Oil consumption: Excessive crankcase pressure can push oil past valve seals or turbo seals, leading to blue smoke from the exhaust and low oil level between changes
- Oil in the intake system: Visible oil pooling in the intake boot, intercooler pipes, or throttle body; may cause rough idle or hesitation as oil enters the combustion chambers
- Check engine light: Some vehicles log codes for turbocharger underboost (P0299) or MAF sensor errors if oil contaminates sensors
- Oil leaks from gaskets: Elevated crankcase pressure can blow out valve cover gaskets, front/rear main seals, or dipstick tube seals
- Reduced fuel economy: Oil vapor in the intake reduces combustion efficiency
Diesel service manuals recommend inspecting the CCV filter every 67,500 miles (roughly every other oil change cycle on heavy-duty use) and replacing it if saturated or visibly dirty. Vehicles used for frequent towing, idling, or short trips may require more frequent replacement.
Which Vehicles Use APDTY 138700?
APDTY 138700 is engineered for vehicles equipped with the Cummins ISB 6.7L turbodiesel engine. Based on the verified fitment data provided, this filter is compatible with:
| Make/Model | Years |
|---|---|
| Dodge Ram 2500 / 3500 / 4500 / 5500 | 2007–2010 |
| Ram 2500 / 3500 / 4500 / 5500 | 2011–2024 |
| Ford F650 / F750 | 2008–2015 |
| Blue Bird All American FE/RE, Vision School Bus | 2008–2018 |
| International 4300 | 2014–2019 |
| International 7300 / 4300LP | 2016–2019 |
| International MV607 | 2019–2020 |
| Freightliner 108SD | 2012–2017 |
| Freightliner B2 | 2008–2019 |
| Freightliner Cargo / M2 | 2008–2009 |
| Freightliner M2 106 | 2008–2013 |
| Freightliner MB Line / MC Line / MT55 / XC Modular Rail / XC Straight Rail | 2008–2017 |
| Freightliner MT45 / XB Straight Rail / XC Raised Rail | 2008–2018 |
| Freightliner S2C | 2013–2017 |
| Freightliner XB Line | 2012–2015 |
| Freightliner XC Lowered Rail | 2011–2017 |
Important: The above list reflects only vehicles with the 6.7L Cummins ISB engine. Not all trim levels or cab configurations within these model ranges use this engine. Always cross-reference your vehicle's VIN or engine code against the live compatibility chart on the product page to confirm fitment before ordering.
APDTY 138700 Specifications and OE Cross-Reference
| APDTY Part Number | 138700 |
| Part Type | Crankcase Ventilation Filter Breather Element |
| Engine Application | Cummins ISB 6.7L Diesel |
| Package Contents | 1 Filter Element |
| OE Replacement Numbers | CV52001, 4936636, 68002433AB |
| Material | High-efficiency filtration media (synthetic/cellulose blend) |
| Installation Location | Crankcase ventilation filter housing (engine-mounted) |
This filter element is designed to meet or exceed OE filtration standards for the Cummins 6.7L platform, providing the same micron rating and flow characteristics as the original Cummins and Mopar components.
How to Replace the Crankcase Ventilation Filter
Replacing the CCV filter on a 6.7L Cummins is a straightforward maintenance task that most DIY owners can complete in 20–30 minutes. General procedure (consult your service manual for model-specific steps):
- Locate the CCV housing: On Ram trucks, the filter housing is typically bolted to the driver-side valve cover or engine block near the turbocharger. On medium-duty chassis, refer to the engine service manual for exact location.
- Remove the housing cap: Loosen the retaining bolts or clamp securing the top cover. Some housings use a threaded cap; others have a band clamp.
- Extract the old filter: Pull the saturated filter element straight out. Inspect the housing interior for excessive oil sludge; wipe clean with a lint-free rag if needed.
- Install APDTY 138700: Insert the new filter element, ensuring it seats fully against the base of the housing. Check that any O-ring or gasket on the cap is in good condition (replace if cracked).
- Reinstall the cap: Torque bolts or tighten the clamp to specification (typically 8–10 ft-lb for cap bolts). Do not overtighten plastic or composite housings.
- Clear codes if applicable: If a check engine light was triggered by CCV system issues, use an OBD-II scanner to clear stored codes after verifying the repair.
Safety note: The filter and housing may contain hot engine oil or residue. Allow the engine to cool and wear nitrile gloves to avoid skin contact with diesel soot and oil.
Emissions Compliance and Legal-Use Notice
The crankcase ventilation system is a federally mandated emissions control device under the Clean Air Act. Removing, bypassing, or failing to maintain the CCV filter may result in increased hydrocarbon emissions and is prohibited on public roads in all 50 states. APDTY 138700 is intended as a direct OE-equivalent replacement to maintain compliance with EPA and CARB regulations. Always replace the CCV filter with a part that meets original equipment specifications. Tampering with emissions equipment can result in fines and may void vehicle warranties or emission certifications required for commercial vehicle registration.
Frequently asked questions
How often should I replace the crankcase ventilation filter on a 6.7 Cummins?
Cummins recommends inspecting the CCV filter every 67,500 miles and replacing it if saturated or heavily contaminated. Vehicles used for towing, frequent idling, or short trips may require replacement as often as every 30,000–50,000 miles. Check your owner's manual for the maintenance schedule specific to your duty cycle.
Will a clogged CCV filter cause a check engine light?
Yes. A restricted CCV filter can trigger codes such as P0299 (turbocharger underboost) or MAF sensor faults if oil vapor contaminates the intake sensors. Excessive crankcase pressure may also cause oil leaks that indirectly trigger other fault codes.
Can I reuse or clean the old CCV filter instead of replacing it?
No. The filter media in APDTY 138700 is designed to trap oil and soot particles permanently. Attempting to wash or blow out a saturated filter will not restore its filtration efficiency and may allow contaminants to pass into the intake system. Always install a new filter element during service.
Does APDTY 138700 fit all 6.7L Cummins engines, or only certain vehicles?
APDTY 138700 is designed for the Cummins ISB 6.7L engine as installed in the specific vehicle applications listed in the compatibility chart. Not all 6.7L Cummins variants use the same CCV filter design. Always verify your exact year, make, and model against the live compatibility chart before ordering to ensure proper fitment.
A clean crankcase ventilation filter is essential for protecting your 6.7L Cummins diesel from oil contamination, excessive crankcase pressure, and emissions violations. APDTY 138700 delivers OE-grade filtration for Ram 2500-5500 trucks, Ford medium-duty chassis, and commercial vehicles equipped with the Cummins ISB 6.7L engine. By replacing your CCV filter at recommended intervals, you'll maintain peak engine performance, reduce oil consumption, and keep your intake system free of sludge and buildup. Verify your vehicle's compatibility using the chart on the product page, and restore proper crankcase ventilation with a direct-fit replacement filter engineered for heavy-duty diesel service.