Best Automotive Replacement Crankcase Ventilation Filters in 2026

Open Crankcase Ventilation (OCV) protets the engine and provides the best solution for emission removal

Helps reduce oil consumption by eliminating mist, aerosol vapors and oil drip in the engine compartment

Fits Most 6.7L Cummins engines on 2007+ Ram 2500, 3500, 4500 & 5500

Bosch HEPA Premium Cabin Air Filters are designed and tested to meet High Efficiency Particulate Air (HEPA) standards based on ISO 29463-3:2011 and provide filtration efficiency of 99.97% at 0.3 microns

This efficiency provides ultimate protection in trapping particulates that can enter your vehicle and provides the cleanest air possible for you and your family

Melt-blown electrostatic layer and very dense media provide greater trapping capabilities; Additional static cotton layer added to the HEPA media provides higher capacity

ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%.

EASY INSTALLATION: Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.

SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters.

Bosch HEPA Premium Cabin Air Filters are designed and tested to meet High Efficiency Particulate Air (HEPA) standards based on ISO 29463-3:2011 and provide filtration efficiency of 99.97% at 0.3 microns

This efficiency provides ultimate protection in trapping particulates that can enter your vehicle and provides the cleanest air possible for you and your family

Melt-blown electrostatic layer and very dense media provide greater trapping capabilities; Additional static cotton layer added to the HEPA media provides higher capacity

CRANKCASE FILTER - if your crankcase breather filter element overhead console displays a message or the mileage has been 67,500 miles apart or your vehicle leaks oil, high idle speed, engine performance declines, etc., a failed crankcase filter might be the problem, it's time to make a replacement.

COMPATIBLE WITH FOLLOWING VEHICLES - Any Vehicle Using Cummins 6.7L ISB Engine | 2007.5-2020 Ram 2500 3500 4500 5500| 2011-2020 Ford F550 F650| 2008-2017 Freightliner MB Line MC Line XC Modular Rail 6.7L & other vehicles with a 6.7-litre ISB engine Freightliner M2 106 | 13-17 Freightliner S2C | 12-15 Freightliner XB Line | 11-17 Freightliner XC Lowered Rail | 12-17 Freightliner 108SD | 11-20 Ford 450 550 | Please see below for more

REPLACES PART NUMBER: CV52001 904-418 904418 4936636 68002433AC 68002433AB Please check the part numbers whether it suits your vehicle before purchasing.

REPLACEMENT Crankcase Ventilation Filter -restores drivability.

FITMENT - Any Vehicle Using The Cummins 6.7L ISB Engine . 2008-2021 Dodge Ram 2500 3500 4500 5500 , 2008-2015 Ford F650 / F750 , 2008-2018 Blue Bird All American FE/RE, 2008-2018 Blue Bird Vision School Bus, 2012-2017 Freightliner 108SD, 2008-2019 Freightliner B2, 2008-2009 Freightliner Cargo/M2, 2008-2013 Freightliner M2 106, 2008-2017 Freightliner MB Line/MC Line, 2011-2014 Freightliner MCL, 2008-2018 Freightliner MT45, 2008-2017 Freightliner MT55.

REPLACES# CV52001 , 68002433AA 68002433AB 68002433AC , 4936636 , 904-418

Compatible with:Replacement for Ram 2500 3500 4500 5500 6.7L 2007.5-2020 and Any vehicle using the 6.7L ISB Engines.

Cross reference:CV52001,68002433AA,68002433AB,68002433AC,4936636,5263190.

Why this filter is needed:The ISB 6.7L diesel engine employs a closed crankcase ventilation system.If the filter is not serviced,a greasy would be built-up on the compressor wheel.Then lowers the efficiency.

Ideal replacement - this crankcase ventilation filter matches the fit and function of the original equipment filter

Durable construction - this crankcase filter is designed from quality materials for resistance to heat and oil

Cost-effective solution - offers original equipment quality at competitive price

crankcase ventilation fil

part number: bf37

package weight: 0.018 kilograms

Triple chrome-plated steel top and base

Made with pre-dyed synthetic media for lasting color

Includes a stainless steel adjustable clamp

Fleetguard Crankcase Ventilation Kit CV50633 replaces Fleetguard CV50607 Crankcase Ventilation Kit

OCV Element Assembly used on Cummins ISX/ISM engines

Replaces CV50601 CV50601 Aluminum Tool CV50607 Steel Tool unavailable

【Perfect substitute】 The air filter is a perfect replacement for those outdated intake system, give your car a new life.

【More air】 Help with more air flowing into the engine machine to improve throttle response and enhance horsepower.

【increase power】 The filter will improve overall air filtration, horse power, torque and gas mileage over stock filters.

【REPLACEMENT】If your vehicle leaks oil, high idle speed, engine performance declines, etc., a failed crankcase filter might be the problem. This ISX15 crankcase breather is manufactured to the OE specification to provide factory-fresh appearance and direct-fit, exactly OEM design to replace your defective filter

【LONG LIFE-SPAN】Long life-span matters, that is why the housing of our cummins ventilation filter is crafted from reinforce material, features high resistance against temperatures and better durability, meanwhile effectively remove oil vapor and restore good driving performance

【REPLACES#】904-7904, 99340, CB57, 3685528, CV50617, CV50634, CV50633. Please make sure the part number before purchase! The Kenworth crankcase element has been tested to ensure trouble-free installation and performance

REPLACE PART NUMBER: 2530029, 9999999. Please check the part number and pictures to verify this is the part you need.

THE BEST PRICE & QUALITY: Reasonable price with OEM quality, saves your money from car dealership.

EASY INSTALLATION: Direct replacement for a proper fit and easy installation, meets or exceeds OEM standards, 100% tested before shipping.

The crankcase ventilation filter is one of the only components of the crankcase ventilation system, and is therefore an important piece in maintaining the functionality of the system. The crankcase vent filter works the same way as any other filter.

The crankcase filter performs the extremely important function of equalizing the pressure in the crankcase during differtent operational phases of the engine. At times, air needs to be released from and at the other times, to be sucked into the crankcase. This is necessary, as excessive crankcase pressures can cause oil leaks to form if allowed to build too high.

3.This crankcase ventilation filter fits for the following vehicles: 2007-2010 Ram 2500/3500, 2008-2010 Ram 4500/5500, 2008-2015 F650/F750, 2008-2018 Blue Bird All American FE/RE, 2008-2018 Blue Bird Vision School Bus, 2012-2017 Freightliner 108SD, 2008-2019 Freightliner B2, 2008-2009 Freightliner Cargo/M2, 2008-2013 Freightliner M2 106, 2008-2017 Freightliner MB Line/MC Line, 2011 2014 Freightliner MCL, 2008-2018 Freightliner MT45, 2008-2017 Freightliner MT55.

【Compatible Vehicles-1】Fits for all vehicles equipped with 6.7L Crankcase Ventilation Filters

Compatible With 2007-2020 Ram 2500 3500 4500 5500, 2011-2020 Ford F550 650, 2012-2017 Freightliner 108SD, 2008-2019 Freightliner B2, 2008-2009 Freightliner Cargo/M2, 2008-2013 Freightliner M2 106, 2008-2017 Freightliner MB Line/MC Line, 2008-2018 Freightliner MT45, 2008-2017 Freightliner MT55, 2013-2017 Freightliner S2C, 2012-2015 Freightliner XB Line, 2008-2018 Freightliner XB Straight Rail, 2011-2017 Freightliner XC Lowered Rail, 2008-2017 Freightliner XC Modular Rail, Raised Rail, Straight Rail, 2008-2018 Blue Bird All American FE/RE, 2008-2018 Blue Bird Vision School Bus, 2014-2019 International 4300, 2016-2019 International 7300/4300LP, 2019-2020 International MV607

NoteL: All Vehicles Equipped With 6.7L Diesel Cummins Engines

Replace Part Number: CV52001, 4936636, 904-418, 68002433AA, 68002433AB, 68002433AC

[IDEAL REPLACEMENT] This crankcase ventilation filter matches the fit and function of the original equipment filter.

[DURABLE CONSTRUCTION] This crankcase filter is designed from quality materials for resistance to heat and oil.

[FIT] Fit for 2008-2014 Peterbilt/Volvo/Kenworth Diesel.

☝100% brand new and high quality.

☝1/4 inch quick fitting for easy connection.

☝Limits water pressure to protect equipment.

[OEM]: 15845-RPY-G01, Pls carefully verify your year & make & model in the product description or check your parts pictures & parts No. with ours before purchasing, so as to prevent buying wrong and unnecessary expenses. If your not sure or don't know, please contact us.

[Compatible]: Compatible with Honda(More models are below)

[Premium Quality]:Cheap and cheerful, easy to install with related installation video, durable, engineered from high-quality materials to improve reliability and durability.

OEM Replacement Part Number: 2049069100, 2049069200

Compatible with: Mercedes-Benz A B CLASS

Please refer to the product information and vechile models OEM Part Number of suitable vehicles and restrictions as well as other product-specific information. If you have anything pls contact us.

Bosch HEPA Premium Cabin Air Filters are designed and tested to meet High Efficiency Particulate Air (HEPA) standards based on ISO 29463-3:2011 and provide filtration efficiency of 99.97% at 0.3 microns

This efficiency provides ultimate protection in trapping particulates that can enter your vehicle and provides the cleanest air possible for you and your family

Melt-blown electrostatic layer and very dense media provide greater trapping capabilities; Additional static cotton layer added to the HEPA media provides higher capacity