Stewart-warner
Stewart-Warner is a 115-year-old American manufacturer of automotive gauges, gauge kits, hourmeters, senders, and switches, sold to hot rod enthusiasts, restomod builders, marine, heavy-duty, and racing customers via specialty retailers, global distributors, and direct e-commerce under CentroMotion ownership.
- Company typePrivate
- Founded1905
- HeadquartersLancaster, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Stewart-warner does
Stewart-Warner is a 115+ year-old American manufacturer of automotive gauges and instrumentation, founded in 1905 and currently operating as a brand under maximatecc within CentroMotion, which has been owned by private equity firm One Rock Capital Partners since 2019. The company produces a comprehensive portfolio of gauges (speedometers, tachometers, fuel level, voltmeters, pressure, temperature), pre-configured 5- and 6-gauge kits, hourmeters, senders, switches, and installation accessories, organized across multiple branded series including Deluxe, Wings, Green Line, Heavy Duty, Power Series, Mariner, Muscle, Catalina, Aviator, and Forged Carbon. Its core proprietary technology centers on a patented air-core movement — two copper-wound coils around a magnetized armature suspended in damping fluid to minimize pointer flutter — for electrical gauges, supplemented by bourdon tube mechanisms with vibration dampening for mechanical gauges and proprietary variable-resistance senders.
The business model is per-unit hardware sales distributed through a global network of national distributors and warehouse distributors, with prominent shelf placement at the three largest US specialty automotive aftermarket retailers — Summit Racing Equipment, Speedway Motors, and JEGS High Performance — plus a first-party e-commerce channel at stewartwarner.com serving the lower 48 US states. Individual gauges are priced roughly $54 to $222 and 5/6-gauge kits roughly $936 to $1,037. Customer segments span hot rod and custom car enthusiasts (primary), restomod and performance builders, marine/boat owners, heavy-duty/commercial truck operators, and racing/motorsport teams, addressed via a horizontal segmentation approach supported by an active SEMA charter-member trade show presence, content marketing, newsletter, and dealer-locator channel.
Stewart-warner firmographics
Firmographics- Name
- Stewart-warner
- Legal name
- Stewart-Warner
- Website
- https://stewartwarner.com
- Company type
- Private
- Founded year
- 1905
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Stewart-Warner is a 115-year-old American manufacturer of automotive gauges, gauge kits, hourmeters, senders, and switches, sold to hot rod enthusiasts, restomod builders, marine, heavy-duty, and racing customers via specialty retailers, global distributors, and direct e-commerce under CentroMotion ownership.
- Ownership category
- akta.pro rank
Where Stewart-warner is headquartered
LocationHeadquarters
- HQ city
- Lancaster
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Stewart-warner business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Marketing or Sales, Technology or R&D, Personnel
Revenue model
- Automotive Gauges and Instrumentation: Direct product sales of automotive gauges including speedometers, tachometers, temperature gauges, pressure gauges, voltmeters, and fuel level gauges. Products sold individually and in complete gauge kits.
- Aftermarket Accessories and Parts: Senders, switches, hourmeters, fuel pumps, sensors, and mounting accessories for automotive and marine applications. Replacement and service parts for existing Stewart-Warner installations.
- OEM and Heavy-Duty Products: Deep portfolio of OEM replacement and service parts, as well as instruments and accessories used by heavy-duty market. Products used in trucks and commercial applications.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Individual Gauges |
| Unit Pricing | Pay-as-you-go | Gauge Kits |
| Unit Pricing | Pay-as-you-go | Hourmeters |
| Unit Pricing | Pay-as-you-go | Switches |
| Unit Pricing | Pay-as-you-go | Senders |
| Unit Pricing | Pay-as-you-go | Accessories |
Go-to-market motion2 records
Distribution channels6 records
Marketing channels6 records
Stewart-warner product offering
Product offeringCore offering
Stewart-Warner manufactures and sells automotive gauges and instrumentation including speedometers, tachometers, fuel level gauges, voltmeters, pressure gauges, and temperature gauges. The company offers multiple branded product series (Deluxe, Wings, Green Line, Heavy Duty, Power Series, Mariner, Muscle, Catalina, Aviator, Forged Carbon) targeting hot rods, muscle cars, classic restorations, marine vessels, and heavy-duty commercial vehicles. Supporting products include hourmeters, senders, switches, gauge kits, and installation accessories.
Product overview
Stewart-Warner is a manufacturer of automotive gauges and instrumentation with over 115 years of history, offering a comprehensive portfolio of gauge products organized into distinct product lines. The core offerings include individual gauges (speedometers, tachometers, fuel level gauges, voltmeters, pressure gauges, temperature gauges) and pre-configured gauge kits available in 5-gauge and 6-gauge sets. Supporting products include senders, switches, and accessories. The product lines range from traditional series (Deluxe™, Wings™, Green Line™, Heavy Duty™, Power Series™) to modern series (Mariner, Muscle, Catalina, Aviator, Forged Carbon), catering to hot rods, muscle cars, marine applications, and heavy-duty vehicles. The company operates as a maximatecc brand under CentroMotion and focuses on physical instrumentation rather than software or AI-based solutions.
Differentiator
Problem solved
Functional benefit
Brands
- Deluxe™: Classic gauge line with iconic SW badge, designed for accuracy and performance
- Heavy Duty™
- Wings™
- Green Line™
- Heavy Duty Plus™
- Power Series™
- Mariner
- Muscle
- Catalina
- Aviator
- Forged Carbon
Products and services
- Deluxe Gauges
Quantifiable outcome
- Premium pricing justified by 115+ years of industry leadership and patented technology
- +1 more outcomes
Companies that use Stewart-warner
Customer profileNamed customers8 records
Segments5 records
Ideal customer profiles5 records
Stewart-warner technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Stewart-warner partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered parent, major, industry and minor.
- maximateccparentStewart-Warner is a maximatecc brand. Maximatecc provides operator information and human-machine interface systems, and is part of CentroMotion portfolio.
- CentroMotionparentStewart-Warner is part of CentroMotion, a global manufacturing company specializing in friction products, mechanical power and information systems, and thermal and motion controls. CentroMotion consists of six key global brands including CrossControl, Elliott Manufacturing, Gits Manufacturing, Power-Packer, and Weasler Engineering.
- Summit Racing EquipmentmajorMajor automotive aftermarket retailer distributing Stewart-Warner products. Available through Summit Racing website and retail locations.
- Speedway MotorsmajorMajor automotive aftermarket retailer distributing Stewart-Warner products. Available through Speedway Motors website and retail locations.
- JEGS High PerformancemajorMajor automotive aftermarket retailer distributing Stewart-Warner products. Available through JEGS website and retail locations.
- SEMA (Specialty Equipment Market Association)industryStewart-Warner is a charter SEMA member and has been a proud exhibitor at the SEMA Show for many years. SEMA is the trade organization representing the $44.6 billion automotive aftermarket industry.
- Made in Chicago MuseumminorHistorical information and images shared by The Made in Chicago Museum, which houses an archive of historical artifacts from the Chicagoland area.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Stewart-warner competitors and assessment
Company assessmentDirect peers
- Auto Meter Products: Auto Meter is the leading US performance aftermarket gauge manufacturer, offering speedometers, tachometers, and auxiliary gauges directly competitive with Stewart-Warner's core product lines across hot rod, muscle car, and racing segments.
- Dakota Digital: Dakota Digital specializes in digital and hybrid retrofit instrument systems for classic cars and hot rods, competing directly with Stewart-Warner in the restomod and custom gauge segment with a more technology-forward product range.
- Classic Instruments: Classic Instruments focuses on direct-fit and custom gauge packages for muscle cars, trucks, and hot rods — overlapping almost entirely with Stewart-Warner's restoration and restomod customer base.
- Equus (by Davis Instruments): Equus manufactures aftermarket and replacement automotive gauges sold through retail channels, competing with Stewart-Warner in the value and mid-tier gauge segment for everyday automotive repair and customization.
- Faria Beede Instruments: Faria Beede produces marine and automotive gauges for OEMs and the aftermarket, directly overlapping with Stewart-Warner's Mariner marine line and its broader gauge replacement business.
- AEM Performance Electronics: AEM makes digital displays, wideband controllers, and performance gauges targeting the same sport compact and racing enthusiast base that overlaps with Stewart-Warner's Power Series and racing product lines.
- Defi (by Nippon Seiki): Defi is a Japanese performance gauge brand offering high-end boost, temperature, and pressure gauges with digital control units, competing with Stewart-Warner in the import and JDM tuning segments of the aftermarket.
- Stack (by Auto Meter): Stack produces professional motorsport instrumentation including tachometers and data loggers, competing with Stewart-Warner's racing and high-performance product positioning in professional and club-level motorsport.
- Marshall Instruments: Marshall Instruments manufactures aftermarket automotive gauges and speedometers with strong muscle-car and vintage fitment lines, positioning itself similarly to Stewart-Warner in the restoration and customization segment.
Broad incumbents
- VDO (Continental): VDO is a major OEM automotive instrument supplier within Continental, providing gauge clusters and instrumentation to vehicle manufacturers globally — a broader incumbent that competes with Stewart-Warner primarily on commercial and heavy-duty OEM opportunities.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Stewart-warner social profiles
Digital presenceStewart-warner financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stewart-warner leadership team
Management profileNumber of profiles
Profiles2 records
Stewart-warner funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stewart-warner 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 Stewart-warner
What does Stewart-warner do?
Stewart-Warner manufactures and sells automotive gauges and instrumentation including speedometers, tachometers, fuel level gauges, voltmeters, pressure gauges, and temperature gauges. The company offers multiple branded product series (Deluxe, Wings, Green Line, Heavy Duty, Power Series, Mariner, Muscle, Catalina, Aviator, Forged Carbon) targeting hot rods, muscle cars, classic restorations, marine vessels, and heavy-duty commercial vehicles. Supporting products include hourmeters, senders, switches, gauge kits, and installation accessories.
Is Stewart-warner a public or private company?
Stewart-warner is a private company. It is classified as private equity controlled and is currently operating.
When was Stewart-warner founded?
Stewart-warner was founded in 1905. It employs 1 to 10 people.
Where is Stewart-warner based?
Stewart-warner is headquartered in Lancaster, United States, in the North America region.
How does Stewart-warner make money?
Three revenue lines are on record. Automotive Gauges and Instrumentation is the primary driver. The others are aftermarket Accessories and Parts and OEM and Heavy-Duty Products.
Who are Stewart-warner's main competitors?
Direct peers on record are Auto Meter Products, Dakota Digital, Classic Instruments, Equus (by Davis Instruments), Faria Beede Instruments, AEM Performance Electronics, Defi (by Nippon Seiki), Stack (by Auto Meter) and Marshall Instruments. VDO (Continental) is listed as a broad incumbent.
Does Stewart-warner have an API?
No public API is recorded for Stewart-warner.