What Eminox does

Eminox is a UK-based designer and manufacturer of exhaust aftertreatment systems (EATS) for heavy-duty diesel and gas-powered vehicles and equipment, founded in 1978 and headquartered in Gainsborough. The company operates within the Hexadex Group of Companies — a majority employee-owned engineering platform since September 2024 comprising 15 manufacturing locations across eight countries and a workforce of approximately 1,400. Eminox's core technology spans DOC/DPF systems for particulate matter reduction, SCR systems for NOx reduction, and combined PM+NOx architectures that achieve up to 99% emissions reduction. Proprietary platforms include the CRT® and SCRT® systems developed with Johnson Matthey since 1994, the EMx Controls ECU launched in 2020, and the Xpurge®/Veritex®/Vericat™/Veritrap™ cleaning and inspection technologies operated under the Ceramex brand. The group also encompasses SaveGuard (thermal and acoustic insulation, acquired June 2024) and Firehalt (passive fire protection, acquired 2025).

Eminox serves seven primary verticals — rail, power generation, on-road, marine, construction, agriculture, and alternative fuels — with embedded Tier 1/Tier 2 supply relationships to major OEMs including Volvo Penta, Bombardier, Alstom, Hitachi, and CNH Industrial/New Holland. The go-to-market combines direct OEM sales for new equipment, a retrofit and aftermarket channel accredited under Energy Saving Trust CVRAS and NRMM RAS schemes, channel partnerships (Paul Clark Services for UK on-road service, Diverse Marine for IMO Tier III marine upgrades), and direct e-commerce for Euro 6 replacement DPFs covering 80%+ of branded European trucks.

Revenue is generated through four primary streams: (1) hardware sales of modular EATS systems for engines ranging from 50kW to 10MW, (2) OE-quality replacement parts (DPFs, insulation components) with next-day delivery across the UK and Europe, (3) professional services for DPF cleaning, inspection, and remanufacturing through Ceramex service centers in the UK, Slovakia, US, India, and Japan, and (4) a managed Gold Service Package subscription offering fixed-cost annual maintenance with real-time telematics monitoring for UK fleet operators. Manufacturing is performed in the UK (Gainsborough), Slovakia (Svit), India (Chennai via the IPR Eminox JV), and the US (Eau Claire and Springfield).

Name

Eminox

Legal name

Eminox Limited

Website

https://eminox.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

101–250 employees

Short description

Eminox designs and manufactures modular exhaust aftertreatment systems for heavy-duty vehicles and equipment across rail, marine, power generation, on-road, construction, agriculture, and alternative fuels sectors. The UK-headquartered company operates through Emission Control by Eminox, SaveGuard, and Ceramex brands as part of Hexadex Group.

Ownership category

akta.pro rank

Product category

Heavy-Duty Exhaust Aftertreatment Systems

NAICS

Other Engine Equipment Manufacturing (333618)

akta.pro primary industry

Exhaust & Emissions Aftertreatment Systems Manufacturing (EGR/DPF/SCR/Catalysts) (IMACAHAD)

akta.pro secondary industries

Aftermarket Exhaust & Emissions Components Manufacturing (Mufflers/Catalysts/DPF/EGR) (IMACANAE), Exhaust, Aftertreatment & Emissions Compliance (DPF/SCR/EGR, Smoke Testing) (TLAKABAG)

Keywords

• Exhaust aftertreatment systems
• Diesel particulate filters
• Heavy-duty emissions compliance
• SCR NOx reduction
• Thermal acoustic insulation

Headquarters

HQ city

Gainsborough

HQ country

United Kingdom

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Exhaust Aftertreatment Systems (EATS): Design, manufacture and supply of modular, scalable exhaust aftertreatment systems for OEM and retrofit applications. Revenue generated from new system sales, installation, and project-based work for power generation, marine, construction, rail, on-road, and agricultural sectors.
2. Replacement DPF Parts: OE-quality Euro 6 replacement diesel particulate filters for commercial vehicles. Direct replacement parts for major brands including DAF, Scania, MAN, Volvo, Renault, Iveco, and Mercedes. Available off-the-shelf with fitting kits included.
3. DPF Cleaning and Remanufacturing Services: Patented DPF cleaning technologies (Xpurge®, Flexpurge®) and full exhaust aftertreatment system remanufacturing through Ceramex. Services restore components to near-original condition extending operational life and supporting circular economy.
4. Patented Inspection and Testing Services: Veritex® inspection, Vericat™ catalyst testing, and Veritrap™ substrate integrity testing services. Quality assurance services ensuring compliance and component performance validation.
5. Service and Maintenance Packages: Gold Service Package offering comprehensive aftertreatment maintenance including remanufactured parts, real-time monitoring, and 12-month warranty. Fixed-cost maintenance regime for UK fleet operators.
6. Thermal and Acoustic Insulation Products: SaveGuard brand products including KatPak, insulation jackets, FlexShield, AcoustiFlo®, ThermoLastic®, and MetCap® for automotive, industrial, and construction applications.
7. Fire Protection Products: Firehalt passive fire protection products including barriers, penetration seals, and access hatches for construction industry compliance with building regulations.

Pricing tiers

Go-to-market motion5 records

Distribution channels7 records

Marketing channels6 records

Core offering

Eminox designs, manufactures and supplies modular, scalable exhaust aftertreatment systems (EATS) for heavy-duty diesel and gas-powered engines used in on-road vehicles, off-highway equipment, rail, marine, power generation, construction and agricultural applications. The portfolio spans DOC/DPF particulate filters, SCR NOx reduction systems, combined PM and NOx modules, replacement Euro 6 DPFs, and proprietary electronic controls (EMx Controls), complemented by sister-business offerings in thermal/acoustic insulation (SaveGuard), DPF cleaning and remanufacturing (Ceramex), and passive fire protection (Firehalt). Services include retrofit solutions accredited by the Energy Saving Trust, fixed-cost fleet maintenance packages, and patented DPF cleaning and inspection technologies.

Product overview

Eminox Group of Companies operates as a platform of emission reduction and related engineering businesses with three independently operating business units: Emission Control by Eminox, SaveGuard, and Ceramex. Emission Control by Eminox provides modular exhaust aftertreatment systems (EATS) including combined PM & NOx reduction, NOx-only SCR systems, and PM-only DPF systems, available in inline, close-couple, high-speed, and medium-speed platform configurations for engines from 50kW to 10MW. SaveGuard offers thermal and acoustic insulation products including KatPak substrate support mat, Insulation Jackets, FlexShield, AcoustiFlo, ThermoLastic, and MetCap. Ceramex provides patented DPF cleaning technologies (Xpurge, Flexpurge) and inspection/testing services (Veritex, Vericat, Veritrap). The portfolio also includes the EMx Controls ECU, CRT and SCRT systems, and the Gold Service Package for fleet maintenance. Firehalt, acquired in 2025, provides passive fire protection products. Together these products address emissions compliance across on-road, construction, marine, rail, power generation, and agricultural sectors.

Differentiator

Problem solved

Functional benefit

Brands

• SaveGuard: Leading designer and manufacturer of specialist thermal and acoustic insulation products for automotive, off-highway vehicles, and industrial applications.
• Ceramex
• Firehalt
• EMx Controls
• CRT
• SCRT
• KatPak
• Xpurge
• Veritex

Products and services

• Exhaust Aftertreatment Systems (Emission Control by Eminox)
• Combined PM & NOx Reduction Systems

Quantifiable outcome

• Up to 99% reduction in NOx, PM, CO, and HC emissions from diesel and gas-powered engines
• +9 more outcomes

Named customers8 records

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature14 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• KBBcoreTechnology or Integration · 21 November 2025Marine turbocharger manufacturer partnered with Eminox to integrate SCR technology for NOx reduction and CII (Carbon Intensity Indicator) compliance. KBB reports that vibration monitoring and oil analysis combined with Eminox SCR have reduced energy use by 15% in Asian shipyard retrofits.
• Paul Clark ServicescoreChannel Partner/ Reseller/ Distributor · 14 March 2024Tier 1 field service support agreement for on-road customers, providing comprehensive service and maintenance support for Eminox exhaust aftertreatment systems in the UK market.
• Diverse MarinecoreStrategic or Co-development PartnerMarine vessel emissions upgrade project achieving IMO Tier III compliance for Thames Rocket. Eminox worked with Diverse Marine Design naval architects to apply exhaust aftertreatment technology, resulting in 87% NOx reduction and first-time Bureau Veritas single vessel approval.
• IP Rings (IPR)coreStrategic or Co-development PartnerJoint venture established 2021 in Chennai, India with IP Rings (part of Amalgamations Group) to cost-effectively meet Indian BS/TREM V off-highway and BS VI Stage 2 on-highway emissions standards.
• CWM AutomationminorStrategic or Co-development PartnerPart of Hexadex Group, collaborated on design and implementation of fully automated production line for sustainable aviation fuel (SAF) components. Line manufactures finished product every 30 seconds on 24/7 operation.
• Johnson MattheycoreStrategic or Co-development PartnerPartnership since 1994 introducing patented chemical technology for CRT® and SCRT® systems. Johnson Matthey's catalyst technology combined with Eminox's modular case design created industry-leading emission reduction systems.
• Association of Manufacturers and suppliers of Power generating Systems (AMPS)minorGTM or Marketing PartnerTrade association membership positioning Eminox as industry voice for diesel and gas-engine power generation sectors, supporting regulatory engagement and industry standards development.

Scale indicators19 records

Recent moves12 records

Expansion highlights6 records

Broad incumbents

• Eberspächer:
• Forvia (Faurecia): Forvia is one of the world's largest automotive Tier 1 suppliers, with Faurecia's Clean Mobility division covering exhaust aftertreatment, SCR, DPF, and emissions control for light and heavy-duty vehicles. Directly comparable product portfolio to Eminox at substantially greater scale, serving global OEMs across on-road, commercial vehicle, and powertrain segments.
• Tenneco / DRiV (Clean Air): Tenneco's Clean Air division (now part of DRiV/Apollo) manufactures exhaust aftertreatment systems, catalytic converters, DPF, and SCR modules for OEMs and the aftermarket globally. Competes with Eminox in heavy-duty on-road and off-road emissions control and is a typical counter-bidder on global OEM platforms.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/eminoxltd
• Facebookfacebook.com/eminoxltd
• LinkedInlinkedin.com/company/eminox-ltd

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Eminox