Walker Engineering
Walker Engineering is a family-owned Southern California manufacturer of the proprietary Walker AIRSEP® closed crankcase emission filtration system for diesel, natural gas, and racing engines, serving marine, trucking, transit, RV, industrial, and power generation customers via dealer and direct-to-consumer channels.
- Company typePrivate
- Founded1989
- HeadquartersSun Valley, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Walker Engineering does
Walker Engineering Enterprises is a family-owned, Southern California-based manufacturer founded in 1989 by aeronautical engineer Robert Walker, Jr. The company designs and produces the proprietary Walker AIRSEP® closed crankcase emission filtration system, originally developed for marine diesel propulsion and subsequently extended to trucks, buses, recreational vehicles, industrial engines, and stationary power generation. The product portfolio comprises three core AIRSEP variants — standard diesel, Natural Gas, and the heavy-duty CCE® Series — alongside a Performance Division that supplies racing and IndyCar products, an off-road line, a custom build engineering service, and branded apparel. Core technology centers on separating and redirecting crankcase blow-by gases to prevent oil contamination and reduce environmental emissions, with AIRSEP® and CCE® protected as registered trademarks. The company operates on a 11–50 employee base and continues under family leadership, with Ben and Amber Walker now running the business and a VP of Sales and Marketing on the management team.
Walker Engineering monetizes through a hybrid go-to-market model. B2B sales of AIRSEP systems flow through a regional authorized dealer network accessible via a website-based 'Find a Dealer' locator, supporting installation-heavy customers such as fleet operators, transit agencies, marine operators, and industrial and power generation facilities. Direct-to-consumer revenue is generated through an e-commerce storefront selling performance products, replacement AIRSEP components, and branded merchandise. Custom engineering and manufacturing services are offered for specialized applications not covered by standard SKUs, with pricing on a quote basis rather than published rates. The business reports a 4.8 average customer rating and references multiple industry awards, though no revenue, funding, M&A, or institutional ownership information is disclosed. The company has no public app, API, SDK, or disclosed digital platform layer, and its competitive position is anchored in proprietary mechanical engineering rather than software or data assets.
Walker Engineering firmographics
Firmographics- Name
- Walker Engineering
- Legal name
- Walker Engineering Enterprises
- Website
- https://walkerairsep.com
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Walker Engineering is a family-owned Southern California manufacturer of the proprietary Walker AIRSEP® closed crankcase emission filtration system for diesel, natural gas, and racing engines, serving marine, trucking, transit, RV, industrial, and power generation customers via dealer and direct-to-consumer channels.
- Ownership category
- akta.pro rank
Walker Engineering industry classification
Industry- Product category
- Engine Emissions Control & Filtration
- NAICS
- Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)
- SIC
- Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)
- akta.pro primary industry
- Passenger Vehicle Exhaust & Emissions Control Manufacturing (ICE) (IMACAAAI)
Keywords
Where Walker Engineering is headquartered
LocationHeadquarters
- HQ city
- Sun Valley
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Walker Engineering business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Marketing or Sales, Technology or R&D
Revenue model
- AIRSEP® Product Sales: Sale of closed crankcase filtration systems and components for diesel and natural gas engines across marine, truck, bus, RV, industrial, and power generation applications.
- Performance Products: Sales of high-performance automotive and racing products through the Performance Division, including IndyCar-specific applications.
- Custom Engineering Solutions: Custom build requests for specialized applications beyond standard product offerings.
- Apparel and Merchandise: Direct sales of branded merchandise including Walker Engineering apparel.
Go-to-market motion2 records
Distribution channels3 records
Marketing channels4 records
Walker Engineering product offering
Product offeringCore offering
Walker Engineering manufactures and sells the Walker AIRSEP® closed crankcase emission filtration system for diesel and natural gas engines, deployed across marine, truck, bus, RV, industrial, and power generation applications. The company also offers the CCE® Series for heavy-duty use, a Performance Division product line for racing and automotive applications (including IndyCar), and custom engineering builds for specialized requirements.
Product overview
Walker Engineering is a manufacturer of closed crankcase filtration systems and performance products. The company's core offering is the Walker AIRSEP® closed crankcase system, available in three main variants: the standard AIRSEP® for diesel engines (marine, trucks, buses, RVs, industrial, power generation), the Natural Gas Series for alternative fuel engines, and the CCE® Series for heavy-duty applications. The Performance Division extends the portfolio with automotive and racing products, while additional categories cover off-road and IndyCar applications. The company also offers custom build services and branded merchandise.
Differentiator
Problem solved
Functional benefit
Brands
- AIRSEP®: Revolutionary closed crankcase system for diesel engines, originally developed for marine applications and now available for trucks, buses, RVs, industrial engines, and power generation
- CCE® Series AIRSEP®
- AIRSEPS® (Natural Gas)
Products and services
- Walker AIRSEP® Closed Crankcase System (Diesel Series)
- Walker AIRSEP® Natural Gas Series
- Walker CCE® Series AIRSEP®
- Performance Division Products
- IndyCar Products
- Off-Road Products
- Apparel & Merchandise
- Custom Build Request Service
Companies that use Walker Engineering
Customer profileNamed customers7 records
Ideal customer profiles2 records
Walker Engineering technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Walker Engineering partnerships and signals
Strategic signalScale indicators1 record
Recent moves6 records
Expansion highlights6 records
Walker Engineering competitors and assessment
Company assessmentBroad incumbents
- Mann+Hummel: Global filtration leader serving automotive and industrial markets with oil, air, fuel, and crankcase ventilation filtration products. Competes with Walker in the closed crankcase ventilation category across passenger, commercial, and industrial applications, but as part of a much larger and diversified filtration portfolio.
- Donaldson Company: Global Tier-1 filtration manufacturer with extensive diesel crankcase ventilation (CCV) and emissions filtration product lines serving on-road, off-road, and industrial diesel markets. A much larger incumbent that competes with Walker's AIRSEP® in commercial vehicle and industrial engine channels, but spans a far broader filtration portfolio.
- BorgWarner: Global Tier-1 automotive supplier with emissions, ignition, and thermal-management product portfolios serving ICE passenger and commercial vehicles. Adjacent peer addressing similar OEM customers with broader emissions and powertrain technology, including some overlap with crankcase ventilation systems.
- Cummins Filtration (Fleetguard): Filtration arm of Cummins Inc. supplying closed crankcase ventilation systems and diesel filtration for commercial trucks, buses, and industrial engines. Directly comparable to Walker's AIRSEP® in on-road and industrial verticals, with the added advantage of Cummins' OEM captive demand.
- Wärtsilä: Marine engine manufacturer and lifecycle services provider with extensive emissions control offerings for marine propulsion and power generation. Comparable to Walker on the marine engine side of Walker's portfolio, though Wärtsilä is a complete engine and systems supplier rather than a CCV component specialist.
- Caterpillar (CAT Reman and Filtration): Industrial diesel and gas engine OEM with proprietary filtration and emissions-control product lines for heavy equipment, power generation, and marine. Competes with Walker's industrial and power-generation AIRSEP applications through factory-installed engine packages and dealer-channel aftermarket filtration.
- Cummins Emission Solutions: Dedicated business unit of Cummins Inc. focused on aftertreatment and emission control systems (DPF, SCR, EGR) for diesel and natural gas engines. Adjacent competitor addressing overlapping diesel and natural gas engine customers with broader exhaust aftertreatment, while Walker specializes in crankcase-only filtration.
Emerging players
- K&N Engineering: Performance filtration specialist serving automotive, motorsport, and powersports markets with air, oil, and cabin filtration products. Comparable to Walker's Performance Division in addressing racing and enthusiast customers with branded filtration, though K&N focuses on intake filtration rather than crankcase emissions.
Direct peers
- Racor (Parker Hannifin): Parker Hannifin's Racor division manufactures diesel fuel and crankcase filtration systems for marine, heavy-duty truck, and industrial engine applications. Most directly comparable peer to Walker — overlapping CCV technology, similar end markets (marine, commercial vehicle, power generation), and competing in the same diesel emissions-control niche.
- Sy-Klone International: Manufacturer of centrifugal pre-cleaners and closed crankcase ventilation systems for heavy equipment, mining, and military diesel engines. Closely comparable niche competitor to Walker in CCV for heavy-duty and industrial applications, though with greater emphasis on pre-cleaner air intake than crankcase emissions.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
Walker Engineering social profiles
Digital presenceWalker Engineering financial estimates
Financial estimateRevenue estimate
Valuation estimate
Walker Engineering leadership team
Management profileNumber of profiles
Profiles4 records
Walker Engineering funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Walker Engineering M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Walker Engineering
What does Walker Engineering do?
Walker Engineering manufactures and sells the Walker AIRSEP® closed crankcase emission filtration system for diesel and natural gas engines, deployed across marine, truck, bus, RV, industrial, and power generation applications. The company also offers the CCE® Series for heavy-duty use, a Performance Division product line for racing and automotive applications (including IndyCar), and custom engineering builds for specialized requirements.
Is Walker Engineering a public or private company?
Walker Engineering is a private company. It is classified as family owned and is currently operating.
When was Walker Engineering founded?
Walker Engineering was founded in 1989. It employs 11 to 50 people.
Where is Walker Engineering based?
Walker Engineering is headquartered in Sun Valley, United States, in the North America region.
How does Walker Engineering make money?
Four revenue lines are on record. AIRSEP® Product Sales are the primary driver. The others are performance Products, custom Engineering Solutions and apparel and Merchandise.
Who are Walker Engineering's main competitors?
Broad incumbents on record are Mann+Hummel, Donaldson Company, BorgWarner, Cummins Filtration (Fleetguard), Wärtsilä, Caterpillar (CAT Reman and Filtration) and Cummins Emission Solutions. K&N Engineering is listed as an emerging player. Direct peers are Racor (Parker Hannifin) and Sy-Klone International.
Does Walker Engineering have an API?
No public API is recorded for Walker Engineering.
What industry is Walker Engineering in?
Walker Engineering's product category is Engine Emissions Control & Filtration. Its primary akta.pro industry code is IMACAAAI, Passenger Vehicle Exhaust & Emissions Control Manufacturing (ICE). Its NAICS code is 333413 and its SIC code is 3564.