Ilmor

What Ilmor does

Ilmor Engineering, Inc. is a privately held, US-based designer and manufacturer of high-performance internal combustion engines serving two distinct markets: recreational marine propulsion and professional motorsport. Founded in 1983 by Mario Illien and Paul Morgan with Roger Penske's backing, the company began as a turbocharged IndyCar engine supplier and has since accumulated 23 Indianapolis 500 wins and 379 IndyCar victories — the most of any engine builder in series history. Today, Ilmor operates from Plymouth, Michigan (US headquarters) with a dedicated marine manufacturing facility in New Hudson, Michigan, and an engineering office in Brixworth/Northampton, UK, employing 130+ engineering, assembly, and support personnel.

The product portfolio spans recreational marine engines (5.3L GDI, 6.2L GDI, 7.4L MPI, Supercharged 6.2L at 630 HP, plus the ION Electric 6kW outboard), the One-Drive sterndrive propulsion system with the One-Touch joystick control platform, and racing engines for IndyCar (twin-turbo V6 hybrid), NASCAR Craftsman Truck Series, and ARCA. Core technology is anchored in proprietary gasoline direct injection (GDI) achieving CARB 5-Star emissions compliance, electromagnetic One-Drive hydraulic clutch actuation, and Yanmar-sourced sterndrive components. Racing engines are co-developed with Chevrolet (since 2012) and Honda Performance Development (hybrid since 2025); marine engines are paired with ZF marine drivetrains and sold through a global dealer network served by the Pit Lane portal.

The business model is primarily B2B/OEM-embedded: Ilmor operates as the exclusive engine supplier for MasterCraft Boat Company's full tow sports line, with secondary OEM partnerships spanning Formula Boats, Aviara, Stancraft, Eliminator, Boesch, Van Dam Custom Boats, Hacker Boat, Garwood Boats, and others. Revenue streams combine hardware sales (engines, parts, accessories via the online store), warranty-supported service support, custom engineering services (powertrain, fuel systems, electronics), and direct sales to racing teams with trackside support. Pricing is quote-based and not publicly disclosed, with engines backed by up to 7-year/1000-hour warranties. Geographic reach spans North America, the UK, and broader Europe, with a 2025 European product push via the BSO-certified 422 Speziell engine.

Name

Ilmor

Legal name

Ilmor Engineering, Inc.

Website

https://ilmor.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

101–250 employees

Short description

Ilmor Engineering designs and manufactures high-performance internal combustion marine propulsion systems and racing engines, serving tow-sports OEMs (notably MasterCraft exclusively), custom boatbuilders, and professional racing teams from its Plymouth, Michigan base.

Ownership category

akta.pro rank

Product category

High-Performance Marine and Racing Engines

NAICS

Other Engine Equipment Manufacturing (333618)

SIC

Engines & Turbines (3510), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Marine Hybrid & Electric Propulsion Systems (IMAJAHAC)

akta.pro secondary industries

Fuel & Emissions Systems for Propulsion (Fuel supply, SCR, EGR, exhaust aftertreatment) (IMAJAHAK), Electric & Hybrid Leisure Craft Manufacturing (IMAJAEAK), Propulsion Control, Monitoring & Automation (ECS, PMS interface) (IMAJAHAH), Marine Generators, Alternators & Power Electronics (Gen-sets, VFDs, converters) (IMAJAHAI)

Keywords

• Marine engines
• Racing engines
• Sterndrive propulsion
• Powertrain engineering
• High-performance engines

Headquarters

HQ city

Plymouth

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Marine Engine Sales: Sale of recreational marine engines to OEM boat manufacturers (MasterCraft exclusive supplier, plus multiple other partners) and aftermarket to boat owners. Revenue generated through direct engine sales, parts, and accessories.
2. Marine Parts and Accessories: Online retail store for parts, hardware, and accessories. Separate retail parts store for consumers and dealer parts store for authorized dealers.
3. Racing Engine Sales: Sale of high-performance racing engines to IndyCar, NASCAR Craftsman Truck Series, and ARCA racing teams. Includes technical support and trackside service.
4. Engineering Services: Custom engineering and development services including powertrain design, fuel systems, electronics, and precision manufacturing for external clients in automotive, marine, and motorsport industries.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Ilmor designs and manufactures high-performance racing and recreational marine engines. Its marine product line includes ION Electric outboard motors, the One-Drive sterndrive propulsion system with One-Touch joystick controls, MasterCraft-branded inboard engines (5.3L GDI through Supercharged 6.2L at 630 HP), and custom inboard engines for premium boatbuilders. Its racing product line includes twin-turbo V6 IndyCar engines, NASCAR Craftsman Truck Series engines, and the ARCA 396 racing engine. The company also provides custom powertrain, fuel systems, and electronics engineering services.

Product overview

Ilmor is a manufacturer of high-performance racing and recreational marine engines with two main product lines. Marine products include: ION Electric outboard motors (6kW electric propulsion); One-Drive sterndrive systems with One-Touch joystick controls; MasterCraft Inboard engines (5.3L GDI, 5.3L GDI HO, 6.0L MPI, 6.2L GDI, Supercharged 6.2L at 630HP); Custom Inboard engines (5.3L GDI, 6.2L GDI, 7.4L MPI); and One-Drive variants (5.3L GDI-S, 6.2L GDI-S, 7.4L MPI-S). Racing products include IndyCar twin-turbo V6 hybrid engines, NASCAR Truck Series engines, and ARCA 396 engines (700 HP). Engineering services cover powertrain design, fuel systems (with NMEA2000/J1939 protocol support), and electronics development. The company operates from Plymouth, MI (US headquarters) and Northampton, UK, with over 130 engineering personnel. The portfolio is anchored by exclusive partnership with MasterCraft Boat Company and race-proven technology from 40+ years in IndyCar, NASCAR, and ARCA competitions.

Differentiator

Problem solved

Functional benefit

Brands

• One-Drive: Sterndrive propulsion system with hydraulic clutch for smooth and quiet operation
• One-Touch
• ION Electric
• ARCA Ilmor 396
• SurfStar System

Products and services

• Ilmor ION Electric Outboard Motor 6kW 48-volt electric outboard motor with integrated power tilt/trim, RGB LED lighting, and lithium or lead-acid battery options. Designed for smooth, ultra-quiet operation in recreational marine applications.
• One-Drive Sterndrive System Hydrodynamic sterndrive propulsion system with electromagnetic hydraulic clutch for smooth quiet shifting, precision-forged gears, counter-rotating propellers, and hydraulic trim. US EPA, CARB, and EU-RCD emissions compliant for bowrider and cruiser markets.
• MasterCraft Inboard Marine Engine Series Exclusive inboard marine engine lineup supplied to MasterCraft Boat Company for tow sport boats, including 6.0L MPI, 5.3L GDI, 5.3L GDI HO, 6.2L GDI, and Supercharged 6.2L variants. Features Gasoline Direct Injection technology, closed-cooled design, and 5-star CARB emissions rating.
• Custom Inboard Marine Engines Complete inboard marine engine lineup (5.3L GDI, 6.2L GDI, 7.4L MPI) for premium custom boatbuilders. Features front accessory drive, multi-port sequential fuel injection, advanced engine protection, and super ultra-low emissions compliant with EPA, CARB, and EU standards.
• IndyCar Racing Engine Twin-turbocharged direct-injected V6 hybrid power unit developed with Chevrolet for IndyCar competition. Six consecutive Manufacturers Championships and 23 Indianapolis 500 wins. Hybrid power unit launched in 2025 combining energy recovery technology with twin-turbo V6 performance.
• NASCAR Truck Series Engine Racing engine for NASCAR Craftsman Truck Series competitions. Won Mahle Engine Builder of the Year award and powered multiple championship-winning seasons.
• ARCA 396 Racing Engine 6.49L ARCA racing engine producing 700 HP and 530 ft-lb torque with 7500 RPM max. Completed back-to-back undefeated seasons in ARCA racing series. Uses Holley EFI system, injectors, wiring harness, and BRP throttle body.
• Powertrain Engineering Services Contract powertrain design service offering clean-sheet design expertise, CATIA/ANSYS/AutoCAD/Solidworks/OPENMIND-based design tools, rapid prototyping, prototype manufacturing tooling, engine and systems durability testing, and multi-dyno test capabilities for external clients in automotive, marine, and motorsport industries.
• Fuel Systems Engineering Services Contract fuel systems engineering service covering system design, wiring design and manufacture, full vehicle system integration, software writing, J1939 and NMEA2000 CAN system development, EFI electronics expertise, vehicle testing, calibration, and US/EU emissions certification for external clients.
• Electronics Engineering Services Contract electronics engineering service providing wiring and harness design and manufacture, hardware design, software design, ECU programming, loom wiring, system simulation and testing, data logging, engine diagnostics, and injector flow measurements for external clients.
• Ilmor Online Store E-commerce platform providing retail marine parts (parts.ilmor.com), dealer parts portal (portal.ilmor.com), Ilmor 396 racing parts store, and Ilmor accessories and merchandise store (ilmorstore.com).

Quantifiable outcome

• 85% fewer warranty claims than MasterCraft's previous engine supplier
• +7 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature7 records

Partnerships

Twelve partnerships are on record, tiered core, minor and standard.

• MasterCraft Boat CompanycoreOEM/ Whitelabel/ Licensing PartnerExclusive engine supplier partnership for MasterCraft's full line of tow sport crafts. Ilmor provides engines up to 630 HP including the Supercharged 6.2L for tow sports applications. Partnership includes 7-year/1000-hour extended warranty offerings.
• Yanmar MarinecoreTechnology or IntegrationYanmar Marine provides sterndrive components for the One-Drive system, which are already proven in Yanmar's diesel sterndrive systems, attesting to product reliability and durability.
• ZF (ZF Friedrichshafen AG)coreTechnology or IntegrationOne of four elite engineering and manufacturing partners alongside MasterCraft, GM, and Yanmar.
• General Motors (GM)coreTechnology or IntegrationLong-standing partnership for engine development including turbocharged Chevrolet engines for IndyCar. GM funded the completion of the original eight-cylinder turbocharged Chevrolet engine in the 1980s.
• Chevrolet RacingcoreStrategic or Co-development PartnerPartnership to develop twin-turbocharged, direct-injected V6 engine for IndyCar competition. Since 2012, Chevrolet and Ilmor captured six back-to-back Manufacturers Championships.
• Honda Performance Development (HPD)coreStrategic or Co-development PartnerPartnership from 2003-2011 producing over 150 victories. Currently partnering on IndyCar's hybrid power unit launched in 2025 combining energy recovery technology with twin-turbo V6 performance.
• Roger PenskecoreStrategic or Co-development PartnerCo-founder partnership from 1983 when Mario Illien and Paul Morgan gained Penske's backing. Partnership with Penske's Indy Car race team enabled GM funding for engine development.
• American ForestsminorOthersNonprofit conservation partnership for global reforestation efforts. Ilmor plants several trees for each engine sold to offset carbon footprint. Over 160,000 trees planted across three Michigan projects including Abbey Road Old Growth Project and West Beech Bark Disease Diversity Plantings.
• Formula BoatsstandardOEM/ Whitelabel/ Licensing PartnerMarine engine partnership for performance boats including Formula BR models featuring One-Drive sterndrive system.
• AviarastandardOEM/ Whitelabel/ Licensing PartnerMarine engine partnership for luxury boats using Ilmor engines paired with One-Drive system.
• Hacker Boat CompanystandardOEM/ Whitelabel/ Licensing PartnerMarine engine partnership for classic runabouts, combining traditional craftsmanship with Ilmor performance.
• Van Dam Custom BoatsstandardOEM/ Whitelabel/ Licensing PartnerMarine engine partnership for custom wooden boats and yachts requiring tailored powertrain solutions.

Scale indicators10 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Mercury Marine: Marine propulsion division of Brunswick Corporation and the largest manufacturer of marine engines in the world. Mercury directly competes with Ilmor in sterndrives, inboards, and outboards across recreational and high-performance segments, with overlapping OEM boat builder relationships and a vastly larger dealer network.
• Volvo Penta: Global marine propulsion systems manufacturer offering sterndrives, inboards, and diesel engines. Volvo Penta competes head-to-head with Ilmor in the premium recreational sterndrive and inboard categories, supplying many of the same European and North American boat builders.
• Yamaha Marine: Division of Yamaha Motor Corporation producing outboards, sterndrives (with sterndrive partnership), and marine engines. Yamaha competes with Ilmor in performance and recreational marine markets and is a major global OEM supplier to boat builders in similar tow sports and cruiser segments.
• Seven Marine: Manufacturer of ultra-high-performance outboard engines (557HP and 627HP models) targeting premium sport boats and offshore center consoles. Seven Marine is a direct competitor to Ilmor's high-output marine propulsion line in the high-performance recreational segment.
• Honda Marine: Honda's marine division producing outboard motors sold through a North American dealer network. Honda Marine competes in adjacent recreational marine segments and shares with Ilmor the broader Honda Performance Development racing engine partnership history.
• BRP Marine (Evinrude): BRP's marine business historically produced Evinrude outboards competing directly in recreational marine propulsion. While Evinrude E-TEC production was wound down, BRP remains a peer-level marine propulsion player and competes for OEM mind-share in the same boat builder channels as Ilmor.

Emerging players

• Cox Marine: Manufacturer of high-output diesel outboard engines focused on commercial and military applications. Cox overlaps with Ilmor in the high-performance outboard category but is emerging and diesel-focused rather than gasoline/electric.

Broad incumbents

• Cummins: Global industrial and marine engine manufacturer producing diesel and increasingly hybrid marine propulsion systems. Cummins is a broad incumbent that competes with Ilmor in larger marine engine categories and offers electrification products relevant to Ilmor's future portfolio.
• Caterpillar Marine: Marine power systems business of Caterpillar Inc., supplying diesel and increasingly dual-fuel marine engines for commercial and high-horsepower applications. Caterpillar competes broadly with Ilmor in upper-tier marine propulsion but is not focused on Ilmor's tow sports niche.
• MTU (Rolls-Royce Power Systems): High-end marine propulsion and power systems brand under Rolls-Royce Power Systems. MTU serves large yacht, commercial, and naval markets, overlapping with Ilmor at the high-end custom yacht engine category (where Ilmor supplies Van Dam Custom Boats and similar).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/IlmorEngines
• YouTubeyoutube.com/user/IlmorEngineering
• Facebookfacebook.com/ilmorengines
• Instagraminstagram.com/ilmorengines

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Ilmor