Monolithos
Monolithos is a Greek automotive aftermarket manufacturer and recycler that produces catalytic converters and diesel particulate filters, runs a 40,000-piece-per-year spent-catalyst recycling operation, and distributes exhaust systems to repair shops and dismantlers across Greece and export markets.
- Company typePrivate
- Founded2000
- HeadquartersAthens, Greece
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Monolithos does
Monolithos (ΜΟΝΟΛΙΘΟΣ Τεχνολογίες Ανακύκλωσης Ε.Π.Ε.) is a privately held Greek industrial company founded in 2000 and headquartered in Athens, operating across a 620 sq.m. licensed manufacturing and pre-treatment facility in Akadimia Platos and a Thessaloniki warehouse. The company runs a circular automotive emissions business combining the collection and pre-treatment of spent catalytic converters (capacity of 40,000 pieces per year) for platinum-group metal recovery with the manufacture and distribution of aftermarket catalytic converters, diesel particulate filters, and complete exhaust systems. Monolithos holds R103 type approval, ISO 9001:2015 certification, and collection licenses from all 13 Greek regions, and is described as the largest player in the Greek automotive aftermarket.
The product portfolio spans universal and direct-fit ceramic and metallic catalytic converters for gasoline and diesel engines, racing catalysts (100–200 cpsi), cordierite and SiC DPFs, a proprietary wet-metallurgy DPF regeneration service, and an economy-line sub-brand. Distribution relies on direct sales to professional repair shops and mechanics across Greece (free delivery in Athens and Thessaloniki, one-day courier nationwide, 24-hour spent-catalyst collection including islands), supplemented by Greek-market distribution agreements with Walker, Klarius, Eberspächer, and MTS. Pricing is unit-based, ranging from €32 for universal silencers to €259 for racing catalysts, with 833 professional repairers and 1,335 spent-catalyst suppliers in the customer base; exports represent 43.5% of sales.
The R&D function, active for approximately eight years, has delivered the patented PROMETHEUS nano-structured catalyst (EP3569309), which substitutes up to 85% of platinum-group metals while maintaining OEM Euro6d performance and is currently in homologation. R&D has been financed principally through non-dilutive EU programs (ECO-INNOVATION 2013 AUTOCAT, Horizon 2020 PROMETHEUS Grant Agreement 778893, and ~€1.04M from EISMEA in 2017), in collaboration with TECNALIA, ICCRAM, CRF (Fiat), Ford Otosan, Università Politecnica delle Marche, and the National Technical University of Athens Metallurgy Laboratory. The company is led by founder Iakovos Yakoumis and operates as a Greek E.P.E. limited liability entity.
Monolithos firmographics
Firmographics- Name
- Monolithos
- Legal name
- ΜΟΝΟΛΙΘΟΣ Τεχνολογίες Ανακύκλωσης Ε.Π.Ε.
- Website
- https://monolithos-catalysts.gr
- Company type
- Private
- Founded year
- 2000
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Monolithos is a Greek automotive aftermarket manufacturer and recycler that produces catalytic converters and diesel particulate filters, runs a 40,000-piece-per-year spent-catalyst recycling operation, and distributes exhaust systems to repair shops and dismantlers across Greece and export markets.
- Ownership category
- akta.pro rank
Monolithos industry classification
Industry- Product category
- Automotive Emission Control Components
- NAICS
- Chemical Manufacturing (325), All Other Chemical Product and Preparation Manufacturing (32599)
- SIC
- Wholesale-Motor Vehicle Supplies & New Parts (5013), Chemicals & Allied Products (2800)
- akta.pro primary industry
- Aftermarket Exhaust & Emissions Components Manufacturing (Mufflers/Catalysts/DPF/EGR) (IMACANAE)
- akta.pro secondary industries
- Exhaust & Emissions Aftertreatment Systems Manufacturing (EGR/DPF/SCR/Catalysts) (IMACAHAD), Environmental & Emissions Control Catalysts (DeNOx/DeSOx/DOC/CO Oxidation) (IMAEAIAC), Catalytic Converter Recycling & Precious Metals Recovery (PGM) (EUAIAJAG), Precious Metals & Catalyst Materials (PGM Catalysts) (IMAEAIAN)
Keywords
Where Monolithos is headquartered
LocationHeadquarters
- HQ city
- Athens
- HQ country
- Greece
- HQ region
- Europe
Offices3 records
Markets served
Monolithos business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Catalytic Converter Sales: Sale of new universal and direct-fit catalytic converters for gasoline and diesel vehicles, including ceramic and metallic options, economy line, and racing catalysts.
- Exhaust System Sales: Import and distribution of complete exhaust systems from Walker, Klarius, Eberspächer, and MTS brands.
- Spent Catalyst Collection and Recycling: Collection of spent automotive catalytic converters for precious metal recovery. Capacity of 40,000 pieces per year.
- DPF Services: DPF replacement, regeneration/cleaning services, and DPF cleaning machine distribution and setup for workshops.
- Accessories and Installation Kits: Sale of lambda sensors, flexes, manifolds, tubes, flanges, gaskets, and complete installation kits.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Metallic Universal Catalysts for Gasoline Engines |
| Unit Pricing | Pay-as-you-go | Metallic Universal Catalysts for Diesel Engines |
| Unit Pricing | Pay-as-you-go | Ceramic Euro II Catalysts (1 Lambda Sensor) |
| Unit Pricing | Pay-as-you-go | Ceramic Euro IV Catalysts (OBD - 2 Sensors) |
| Unit Pricing | Pay-as-you-go | MONOLITHOS Economy Line Catalysts |
| Unit Pricing | Pay-as-you-go | Racing Catalysts |
| Unit Pricing | Pay-as-you-go | Universal Exhaust Silencers |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
Monolithos product offering
Product offeringCore offering
Monolithos manufactures and distributes automotive catalytic converters, diesel particulate filters (DPF), complete exhaust systems, and related installation accessories for the European automotive aftermarket, while operating a circular business model through collection and pre-treatment of spent catalytic converters for precious metal recovery (Platinum, Palladium, Rhodium). The company operates a 620 sq.m. licensed manufacturing facility in Akadimia Platos (Attica) and a 40,000 pieces/year spent-catalyst pre-treatment unit, serving as the largest player in the Greek automotive aftermarket.
Product overview
Monolithos is a Greek automotive aftermarket company specializing in catalytic converters, exhaust systems, and recycling. The product portfolio includes Universal Ceramic Catalytic Converters (EURO II, EURO IV), Universal Metallic Catalytic Converters for gasoline and diesel engines, Direct Fit Catalytic Converters, and Exhaust Systems from major manufacturers (Walker, Klarius, Eberspächer, MTS). The company also offers Particulate Filters (DPF) with replacement and innovative wet metallurgy-based cleaning/regeneration services, Installation Kits, Racing Catalysts, and the Economy Line sub-brand. A key differentiator is the PROMETHEUS R&D project developing nano-structured catalysts that reduce precious metal usage by up to 85%. Services include spent catalyst recycling with 40,000 pieces/year capacity and specialized support for repairers.
Differentiator
Problem solved
Functional benefit
Brands
- PROMETHEUS: Patented Prometheus Series Catalysts developed under Horizon 2020 funding. Euro6 catalyst technology using nano-structured design that reduces precious metal content by up to 85% while maintaining performance equivalent to OEM Euro6d catalysts.
Products and services
- Universal Catalytic Converters (Ceramic) Ceramic substrate catalytic converters for gasoline and diesel engines, available in EURO II (1 lambda sensor) and EURO IV (OBD, 2 lambda sensors) configurations with 15gr/ft3 precious metal loading. For automotive repair shops and vehicle owners.
- Universal Catalytic Converters (Metallic) Metallic substrate catalytic converters for gasoline engines up to 5000cc and diesel engines, featuring sport catalysts with 400 cpsi and 25-30gr/ft3 precious metals loading. For automotive repair shops.
- Direct Fit Catalytic Converters Vehicle-specific catalytic converters ready for direct installation, covering all makes and models for the European market. For automotive repair shops and mechanics.
- Exhaust Systems Complete automobile exhaust systems imported and distributed from Walker (France), Klarius (UK), Ebersp\u00e4cher (Germany), and MTS (Italy), with two-year warranty, ISO certification, and R103 type approval.
- Particulate Filters (DPF)
Quantifiable outcome
- 85% reduction in precious metal usage compared to conventional catalysts while maintaining Euro6d performance
- +3 more outcomes
Companies that use Monolithos
Customer profileSegments3 records
Ideal customer profiles3 records
Monolithos technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Monolithos partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered minor and core.
- TECNALIAminorResearch and technology partner shown in company partnerships section.
- ICCRAM (University of Burgos)minorAcademic research partner from Spain involved in catalyst development.
- CRF (Centro Ricerche Fiat)minorFiat's research center, partner in automotive catalyst R&D.
- Ford OtosanminorTurkish automotive manufacturer, partner in catalyst research.
- Università Politecnica delle MarcheminorItalian university partner in catalyst research.
- Walker (France)coreMajor exhaust system manufacturer. Monolithos imports and distributes Walker exhaust products in Greece.
- Klarius (UK)coreUK-based exhaust system manufacturer. Monolithos distributes Klarius products in Greek market.
- Eberspächer (Germany)minorGerman exhaust system manufacturer with selected products distributed by Monolithos.
- MTS (Italy)minorItalian exhaust manufacturer with selected products in Monolithos portfolio.
- EDOE AE (Alternative Vehicle Management System)minorEnd-of-life vehicle management system. Monolithos has signed agreement with EDOE for proper disposal of spent catalysts.
- National Technical University of Athens - Metallurgy LaboratorycoreCollaboration with Professor Dimitrios Panias' laboratory for precious metal recovery research. Published joint scientific paper on 'Behavior of Platinum Group Metals during their Pyrometallurgical Recovery from Spent Automotive Catalysts'.
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
Monolithos competitors and assessment
Company assessmentDirect peers
- Klarius Products: Klarius is a UK-based manufacturer of aftermarket catalytic converters, DPFs, and exhaust systems — directly comparable to Monolithos's aftermarket product portfolio. Notably, Klarius is also a current distribution partner of Monolithos for the Greek market, evidencing product/market overlap.
- Eberspächer: Eberspächer is a German OE and aftermarket supplier of catalytic converters, DPFs, and exhaust systems. Comparable to Monolithos as both an aftermarket competitor and a current distribution partner for selected products in Greece.
- Walker (Tenneco): Walker exhaust systems (now part of Tenneco/DRiV) manufactures aftermarket catalytic converters and exhausts globally. Monolithos currently distributes Walker's products into Greece, indicating closely comparable product specifications and aftermarket positioning.
- MTS (Italy): MTS produces aftermarket catalytic converters and exhausts and is also a current distribution partner of Monolithos. Closely comparable product range and European aftermarket focus.
- Bosal: Bosal is a European aftermarket exhaust and catalytic converter manufacturer with a similar product mix (catalysts, DPFs, exhaust systems) and B2B distributor model. Monolithos and Bosal both serve independent auto repair shops with universal and direct-fit aftermarket emissions components across Europe.
Broad incumbents
- Johnson Matthey: Johnson Matthey is a global PGM-catalyst and emissions-control materials specialist. Highly comparable on the catalyst chemistry and PGM utilization side, particularly relevant as a benchmark for PROMETHEUS's 85% PGM reduction claim. Operates at vastly larger scale than Monolithos.
- BASF Catalysts: BASF's mobile emissions catalysts business manufactures PGM-based catalysts for ICE vehicles globally. Comparable to Monolithos on the catalyst production and precious metals technology side, but operates as a Tier-1 supplier to OEMs.
- Umicore: Umicore is a global leader in PGM-based automotive catalysts and precious metals recycling, operating at industrial scale across Europe. Comparable to Monolithos in the catalyst and PGM recycling activities, though Umicore serves OEMs and global markets rather than the Greek aftermarket.
- Faurecia (now FORVIA): FORVIA's Faurecia Clean Mobility division is one of Europe's largest exhaust and emissions-control system suppliers across both OE and aftermarket channels. Broadly comparable to Monolithos's exhaust systems business, though at significantly greater scale.
Emerging players
- Heraeus Precious Metals: Heraeus is a German precious-metals specialist with PGM refining and recycling capabilities. Comparable to Monolithos's spent-catalyst recycling and PGM recovery activity, and a potential competitor for feedstock sourcing from European end-of-life vehicles.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Monolithos social profiles
Digital presenceMonolithos compliance and trust
Trust signalCompliance2 records
Monolithos financial estimates
Financial estimateRevenue estimate
Valuation estimate
Monolithos leadership team
Management profileNumber of profiles
Profiles1 record
Monolithos funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Monolithos 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 Monolithos
What does Monolithos do?
Monolithos manufactures and distributes automotive catalytic converters, diesel particulate filters (DPF), complete exhaust systems, and related installation accessories for the European automotive aftermarket, while operating a circular business model through collection and pre-treatment of spent catalytic converters for precious metal recovery (Platinum, Palladium, Rhodium). The company operates a 620 sq.m. licensed manufacturing facility in Akadimia Platos (Attica) and a 40,000 pieces/year spent-catalyst pre-treatment unit, serving as the largest player in the Greek automotive aftermarket.
Is Monolithos a public or private company?
Monolithos is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Monolithos founded?
Monolithos was founded in 2000. It employs 11 to 50 people.
Where is Monolithos based?
Monolithos is headquartered in Athens, Greece, in the Europe region.
How does Monolithos make money?
Five revenue lines are on record. Catalytic Converter Sales are the primary driver. The others are exhaust System Sales, spent Catalyst Collection and Recycling, DPF Services and accessories and Installation Kits.
Who are Monolithos's main competitors?
Direct peers on record are Klarius Products, Eberspächer, Walker (Tenneco), MTS (Italy) and Bosal. Broad incumbents are Johnson Matthey, BASF Catalysts, Umicore and Faurecia (now FORVIA). Heraeus Precious Metals is listed as an emerging player.
Does Monolithos have an API?
No public API is recorded for Monolithos.
What industry is Monolithos in?
Monolithos's product category is Automotive Emission Control Components. Its primary akta.pro industry code is IMACANAE, Aftermarket Exhaust & Emissions Components Manufacturing (Mufflers/Catalysts/DPF/EGR), with a secondary code of IMACAHAD, Exhaust & Emissions Aftertreatment Systems Manufacturing (EGR/DPF/SCR/Catalysts). Its NAICS code is 325 and its SIC code is 5013.