Automotive Crankcase Ventilation System Market By System Type (Open Crankcase Ventilation, Closed Crankcase Ventilation); By Vehicle Type (Passenger Vehicles, Commercial Vehicles, Off-Highway Vehicles); By Component (Oil Separators, Pressure Control Valves, Hoses/Filters/Gaskets); By Geography, Segment Revenue Estimation, Forecast, 2026–2032

Which Factors Are Accelerating Growth in the Automotive Crankcase Ventilation System Market? – (Updated On: 04-Sep-2026)

The Global Automotive Crankcase Ventilation System Market was valued at USD 3.32 billion in 2025 and is projected to reach USD 5.37 billion by 2032, expanding at a CAGR of 7.1% during 2026–2032, according to Strategic Market Research.

 

Global crankcase ventilation demand is fundamentally tied to ICE and hybrid vehicle production, creating a recurring OEM requirement of roughly 85–90 million factory-fitted systems annually. Since modern emission rules require crankcase gases to be routed back into the engine rather than vented directly, closed crankcase ventilation has become standard equipment across new gasoline, diesel and hybrid vehicles.

 

Passenger cars and SUVs represent the largest volume base. Gasoline-powered vehicles account for about 70% of annual crankcase ventilation system consumption, equivalent to roughly 60–63 million units per year, while diesel applications represent approximately 25–27 million units. The aftermarket adds another estimated 25–30 million replacement PCV valves, hoses and related components annually, supported by the large global vehicle fleet and typical PCV service intervals of around 30,000–50,000 miles.

 

Technology demand is also becoming more sophisticated. Turbocharged engines can produce 2–3 times higher crankcase pressure under boost, increasing adoption of multi-stage separators and pressure-control modules. Hybrid engines can experience up to 40% greater moisture accumulation because of repeated engine shutdown and restart cycles. Heavy-duty diesel applications require particularly durable separators because engines may remain in service for 500,000–1,000,000 miles.

 

Overall, volume demand remains anchored by vehicle production, while future market value is increasingly driven by higher-performance systems used in turbocharged, hybrid and heavy-duty engines.

 

Automotive Crankcase Ventilation System Market Key Report Takeaways Across Major Segments

System Type

• Closed Crankcase Ventilation led with 84.0% or USD 2.789 billion in 2025 and has the fastest 7.5% CAGR because OEMs increasingly need contained blow-by routing with oil separation and pressure control.

Vehicle Type

• Passenger Vehicles led with 66.0% or USD 2.191 billion in 2025 and the fastest 7.2% CAGR, reflecting the scale of gasoline, hybrid and other combustion-equipped passenger-car production.

Component

• Oil Separators led with 46.0% or USD 1.527 billion in 2025 and the fastest 7.4% CAGR because controlling fine oil aerosol is becoming a higher-value part of crankcase system design.

Geography

• Asia Pacific led with 43.0% or USD 1.428 billion in 2025 and the fastest 7.8% CAGR because it contains the world's largest concentration of vehicle and engine production.

 

Closed Systems Gain Share as Crankcase Management Moves Toward Integrated Engine Design

Closed Crankcase Ventilation generated USD 2.789 billion from an 84.0% share in 2025 and is growing at 7.5%, making it both the largest and fastest-growing system type. Automakers use closed designs to separate oil from blow-by gas and return cleaned gas to the intake instead of allowing uncontrolled discharge. MANN+HUMMEL's current ProVent² 100–300 range combines separation, pressure regulation and bypass functions for turbocharged diesel engines from 75 kW to 1,200 kW, illustrating the higher integration now expected from these systems.

Open Crankcase Ventilation accounted for 16.0% or USD 0.531 billion in 2025 and is growing at 5.0%. Demand remains concentrated in applications where operators can use a filtered atmospheric outlet without routing gases into the engine intake. The 2026 edition of ISO/TS 17536-2 specifically covers laboratory evaluation of oil-aerosol separators in both open and closed crankcase systems, confirming that open configurations remain an active engineering category even as their commercial share declines.

 

Passenger Vehicles Provide the Largest Installation Base While Heavy-Duty Engines Increase Service Demand

Passenger Vehicles generated 66.0% of revenue, equal to USD 2.191 billion in 2025, and have the vehicle category's fastest CAGR at 7.2%. Carmakers purchase integrated separators, PCV valves and related lines for gasoline and hybrid engines at high production volumes. China produced 34.53 million vehicles in 2025, while India reached 6.49 million and Japan 8.41 million, providing a substantial production base for crankcase components even as battery-electric penetration increases.

Commercial Vehicles represented 26.0% or USD 0.863 billion and are growing at 7.0%. Trucks and vans operate for longer hours and typically place greater thermal and contamination loads on crankcase filtration components. In the first half of 2026, EU truck registrations increased 9.8% to 171,933 units, while diesel still accounted for 92.1% of new truck registrations. This powertrain mix keeps crankcase separation and pressure-management hardware commercially relevant in heavy-duty fleets.

Off-Highway Vehicles accounted for 8.0% or USD 0.266 billion in 2025 and are expanding at 6.5%. Construction, agriculture and mining operators require crankcase filtration that can handle high engine loads, dust and long duty cycles. Fleetguard's current new-product catalogue lists the CV50873 crankcase ventilation unit for Caterpillar C18 and C12 applications with a May 2026 introduction, providing a direct example of continued product demand in large off-highway engines.

 

Oil Separators Capture the Highest Component Value as Fine-Aerosol Control Becomes More Important

Oil Separators led component revenue with 46.0% or USD 1.527 billion in 2025 and have the fastest CAGR at 7.4%. Engine manufacturers need separators that recover oil while limiting contamination entering turbochargers and intake systems. MAHLE's current commercial-vehicle air-management portfolio integrates the oil-mist separator into crankcase ventilation and returns separated oil to the lubrication circuit, showing why separator functionality is increasingly designed into broader engine-management assemblies rather than treated as a simple breather component.

Pressure Control Valves represented 25.0% or USD 0.830 billion and are growing at 7.2%. Buyers require these valves because crankcase pressure changes with engine speed, load and blow-by volume; poor control can contribute to seal leakage or oil loss. Parker Racor's current CCV12000 configuration combines filtration with an integral crankcase pressure regulator and supports engines up to 2,000 hp or 1,490 kW, demonstrating the value of integrated pressure management in heavy-duty systems.

Hoses, Filters and Gaskets held 29.0% or USD 0.963 billion in 2025 and are expanding at 6.5%. These products benefit from both OEM installation and recurring replacement because closed systems require sealed gas routing and serviceable filtration. Hengst currently lists its AS839M as an available crankcase ventilation oil-separator assembly supplied with gaskets, seals and a breather valve, illustrating how aftermarket purchases increasingly combine several service components in one replacement unit.

 

Regional Demand Follows Vehicle Production, Powertrain Mix and Local Manufacturing Investment

Asia Pacific held the largest regional position at 43.0% or USD 1.428 billion in 2025 and is growing fastest at 7.8%. Demand is tied directly to engine and vehicle manufacturing scale. Asia-Pacific produced approximately 59.2 million vehicles in 2025, more than 61% of global output, while China's production alone reached 34.53 million units. Large passenger, commercial and hybrid production volumes make the region the primary first-fit market for ventilation components.

Europe accounted for 23.0% or USD 0.764 billion and is expanding at 6.4%. Its demand increasingly depends on the mix between BEVs and vehicles that retain combustion engines. In 2025, battery-electric vehicles represented 17.4% of EU new-car registrations, while hybrid-electric cars accounted for 34.5% and plug-in hybrids another 9.4%. The continuing scale of combustion-containing hybrids preserves crankcase-system demand even as pure-electric penetration reduces long-term addressable volume.

North America represented 22.0% or USD 0.730 billion in 2025 and has a 6.5% CAGR. The region combines large light-vehicle volumes with pickup, commercial-truck and off-highway engine demand. The United States produced 10.24 million vehicles and sold 16.7 million in 2025, according to OICA. This supports both first-fit component demand and a large future replacement pool for separators, PCV assemblies and crankcase filters.

Latin America held 7.0% or USD 0.232 billion and is growing at 7.0%. Brazil is the main manufacturing anchor. ANFAVEA data reported through Agência Brasil show that Brazilian vehicle production increased 8.8% in the first half of 2026 to 1.37 million units, the strongest first-half output since 2019. Higher domestic assembly creates direct sourcing opportunities for engine ventilation components used in locally produced combustion and hybrid vehicles.

Middle East and Africa accounted for 5.0% or USD 0.166 billion and have a 7.2% CAGR. Growth is linked to localized assembly rather than vehicle demand alone. In July 2026, South Africa's government highlighted Toyota South Africa Motors' R10.4 billion investment in its Prospecton plant for ninth-generation Hilux production, supporting nearly 27,000 supplier-network jobs. New locally built combustion and hybrid variants add first-fit opportunities for regional engine-component suppliers.

 

Emissions Rules and Separator Testing Raise the Engineering Requirement per Engine

Crankcase ventilation is directly affected by emissions certification. The U.S. heavy-duty rule, current through August 2026, states that regulated engines generally may not discharge crankcase emissions into ambient air throughout useful life unless specified testing provisions are met, supporting closed or fully accounted configurations.

Europe's Euro 7 regulation is currently consolidated as of 2 September 2026, with implementation beginning for new M1 and N1 vehicle types from 29 November 2026. Its supporting 2025 implementing regulation defines exhaust-emissions type-approval procedures for these vehicles.

At component level, ISO/TS 17536-2:2026, published in April 2026, standardizes gravimetric separation-efficiency and pressure testing for blow-by oil-aerosol separators. This makes validated separator performance and pressure control more important in supplier qualification.

 

Automotive Crankcase Ventilation Competitive Landscape Centers on Separation Efficiency and Integrated Modules

Competition includes filtration specialists, engine-component suppliers and aftermarket brands. MANN+HUMMEL currently offers the ProVent² 100–300, 500 and 700 families, covering medium diesel, very high-output diesel and large gas-engine applications; its ProVent² 700 specifies more than 99.9% mass-weighted separation efficiency at d50=0.6 µm and service life above 8,000 hours.

MAHLE competes through oil-mist separators integrated into crankcase ventilation and cylinder-head-cover architectures. Parker Hannifin's Racor portfolio covers both CV open and CCV closed configurations with coalescing media, pressure regulation and replaceable elements. Hengst maintains an active aftermarket portfolio of crankcase oil separators, including assemblies supplied with seals and breather valves.

Atmus Filtration Technologies, through Fleetguard, remains active in crankcase ventilation for on- and off-highway equipment; its catalogue added the CV50873 in May 2026, and Atmus opened an expanded testing laboratory in Quimper, France in March 2026 to shorten filtration validation lead times. Donaldson competes through Spiracle crankcase filtration systems, while Purflux currently supplies blow-by oil separators for heavy-duty applications.

The main competitive risk is structural rather than technological. Battery-electric vehicles remove the combustion crankcase entirely. Suppliers therefore gain most where they can increase content per remaining engine through better aerosol separation, integrated pressure control, longer service intervals and aftermarket filter replacement.

 

Analyst Insights — Automotive Crankcase Ventilation Systems Evolve from Emission Components to Advanced Engine Air-Management Solutions

The Automotive Crankcase Ventilation System Market is transitioning from basic blow-by gas management components toward integrated engine air-management systems designed to improve emissions compliance, engine durability, and vehicle efficiency. While closed crankcase ventilation systems remain the dominant technology, market differentiation is increasingly shifting toward advanced oil separation, pressure regulation, lightweight integration, and application-specific designs for turbocharged, hybrid, and heavy-duty engines.

The largest strategic opportunity lies in high-performance ventilation systems capable of managing increasingly complex engine operating conditions. Modern gasoline, diesel, and hybrid engines generate higher demands on crankcase pressure control due to turbocharging, downsizing, higher combustion efficiency targets, and frequent start-stop operation. These trends are increasing demand for multi-stage separators, integrated pressure-control modules, and systems capable of improving oil recovery while maintaining emission compliance.

Competitive advantage is expected to shift toward suppliers offering complete crankcase management platforms combining oil separation, pressure regulation, filtration, monitoring capability, and vehicle integration expertise. Automakers are increasingly evaluating suppliers based on separation efficiency, durability, maintenance intervals, packaging efficiency, and compliance with evolving emission standards rather than focusing only on individual PCV components.

A further opportunity is emerging through the growth of hybrid powertrains and advanced internal combustion engine applications. Although battery-electric vehicle adoption reduces long-term demand for combustion-related components, hybrid vehicles continue to require crankcase ventilation systems and introduce new operating challenges, including increased moisture accumulation from frequent engine cycling. Heavy-duty commercial vehicles and off-highway equipment also represent attractive opportunities due to long service lives and demanding operating environments.

The increasing importance of oil aerosol control is shifting component value toward advanced oil separators and integrated ventilation modules. Suppliers capable of improving fine-particle separation, reducing intake contamination, and extending engine service intervals are positioned to capture higher-value applications across passenger vehicles, commercial fleets, and industrial engines.

Future market leaders are therefore likely to be companies that transform crankcase ventilation systems into intelligent engine-management solutions, combining emission control, filtration efficiency, and lifecycle performance rather than competing solely on conventional PCV hardware supply.

 

How Was the Automotive Crankcase Ventilation System Market Analyzed?

The Automotive Crankcase Ventilation System Market was analyzed using an engine technology, emission-regulation, vehicle production, component architecture, end-user demand, and regional automotive manufacturing framework. The research evaluated market demand based on factory-fitted vehicle production, aftermarket replacement requirements, powertrain trends, and regulatory compliance needs, focusing on actual crankcase ventilation system deployment across automotive and industrial engine applications.

System type analysis evaluated Closed Crankcase Ventilation and Open Crankcase Ventilation systems based on emission-control capability, oil separation performance, pressure management, regulatory acceptance, and application suitability. Closed systems were assessed as the dominant technology due to increasing adoption of contained blow-by gas routing, oil recovery requirements, and stricter emission regulations, while open systems were evaluated based on remaining applications where atmospheric venting continues to be acceptable.

Vehicle type analysis mapped demand across Passenger Vehicles, Commercial Vehicles, and Off-Highway Vehicles. Market demand was assessed through global vehicle production, engine technology adoption, fleet operating conditions, replacement requirements, and powertrain composition. Passenger vehicles were identified as the largest segment due to high gasoline and hybrid vehicle production volumes, while commercial and off-highway vehicles were analyzed based on longer operating cycles and higher filtration requirements.

Component analysis evaluated Oil Separators, Pressure Control Valves, and Hoses/Filters/Gaskets based on functional importance, replacement frequency, technical complexity, and value contribution within crankcase ventilation systems. Oil separators were identified as the highest-value component category due to increasing demand for efficient oil aerosol recovery and contamination control, while pressure-control systems were assessed based on their importance in maintaining stable crankcase pressure under varying engine loads.

Technology analysis incorporated multi-stage separation systems, integrated pressure regulation, advanced filtration media, compact module designs, and emission-compliant ventilation architectures. Competitive assessment focused on supplier capabilities in developing efficient separation technologies, improving durability, reducing maintenance requirements, and integrating ventilation systems into modern engine platforms.

Regulatory and standards analysis considered emission-control requirements, crankcase gas management regulations, oil aerosol testing standards, and vehicle approval requirements influencing product development. Key considerations included closed-system adoption, separator efficiency validation, pressure-control performance, and compliance with evolving global emission regulations affecting gasoline, diesel, hybrid, and heavy-duty engines.

End-user analysis evaluated automotive OEMs, commercial vehicle manufacturers, fleet operators, and industrial engine users by considering production volumes, engine operating conditions, maintenance requirements, lifecycle cost considerations, and supplier qualification standards. OEM demand was analyzed as the primary market driver due to mandatory factory installation requirements across modern combustion and hybrid vehicles.

Regional analysis evaluated demand across Asia Pacific, Europe, North America, Latin America, and the Middle East & Africa by considering vehicle production capacity, engine manufacturing concentration, emission regulations, hybrid adoption, and commercial vehicle activity. Asia Pacific was assessed as the largest growth region due to its dominant vehicle manufacturing base, while North America and Europe were evaluated based on advanced engine technologies, regulatory requirements, and replacement demand.

Market sizing combined vehicle production volumes, factory-installed system penetration, aftermarket replacement cycles, component pricing, vehicle fleet age, technology adoption, supplier participation, and regional automotive manufacturing trends. Forecast assumptions incorporated continued ICE and hybrid vehicle production, stricter emission standards, increased turbocharged engine adoption, demand for improved oil separation efficiency, commercial vehicle expansion, and long-term aftermarket replacement opportunities.

This methodology provides an engine-performance and regulatory-driven foundation for market sizing, system segmentation, component analysis, vehicle-type evaluation, regional forecasting, competitive assessment, and the 2026–2032 Automotive Crankcase Ventilation System Market outlook.

 

Report Coverage Table

Report Attribute	Details
Forecast Period	2026 – 2032
Market Size Value in 2025	USD 3.32 Billion
Revenue Forecast in 2032	USD 5.37 Billion
Overall Growth Rate	CAGR of 7.1% (2026 – 2032)
Base Year for Estimation	2025
Historical Data	2019 – 2024
Unit	USD Million, CAGR (2026 – 2032)
Segmentation	By System Type, By Vehicle Type, By Component, By Geography
By System Type	Open Crankcase Ventilation, Closed Crankcase Ventilation
By Vehicle Type	Passenger Vehicles, Commercial Vehicles, Off-Highway Vehicles
By Component	Oil Separators, Pressure Control Valves, Hoses/Filters/Gaskets
By Region	North America, Europe, Asia-Pacific, Latin America, Middle East & Africa
Country Scope	U.S., Canada, UK, Germany, France, Italy, China, Japan, South Korea, India, Brazil, Mexico, Saudi Arabia, UAE, South Africa
Market Drivers	Stricter vehicle-emission standards, rising adoption of closed crankcase ventilation systems, growing demand for efficient oil separation and blow-by gas management, expansion of passenger and commercial vehicle production
Customization Option	Available upon request