L.E. Jones
L.E. Jones is a privately held, family-owned manufacturer founded in 1941 that produces precision valve seat inserts and related engine components from patented proprietary alloys. The company supplies global OEM engine manufacturers including Caterpillar, Volvo, and Cummins across heavy-duty diesel, natural gas, marine, locomotive, power generation, and aircraft markets.
- Company typePrivate
- Founded1941
- HeadquartersMenominee, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What L.E. Jones does
L.E. Jones Company, founded in 1941 and headquartered in Menominee, Michigan, is a privately held, family-owned manufacturer specializing in precision valve seat inserts (VSIs) and related critical engine components for high-performance engines. The company produces tens of millions of parts annually across approximately 700 unique insert types, almost all with distinct alloy compositions drawn from a portfolio of dozens of patented proprietary alloys spanning cast, powder metal, centrifugal, and welded configurations. Core manufacturing capabilities include proprietary resin-bonded shell mold near-net-shape casting, fully automated molding, cellular manufacturing organized by customer/product family, and in-house metallurgical and tribological laboratories equipped with Plint Wear Testing, Bruker TriboLab, SEM/EDS, OLM systems, and a full suite of non-destructive testing methods. The company maintains what it characterizes as the world's largest database of valve train metallurgical pairs and performance criteria across hundreds of engine platforms.
The business operates a direct-to-OEM sales model, supplying global engine manufacturers including Caterpillar, Volvo, and Cummins, as well as over 100 additional OEM customers across heavy-duty diesel, off-highway, natural gas, marine, locomotive, power generation, aircraft reciprocating, racing, and chemical piping/valve applications. Dedicated sales engineers and metallurgists engage customers from part design through production and post-test analysis, with pricing negotiated on a per-quotation basis and payment terms of net 30 days. Production is split between a U.S. facility in Menominee, Michigan and a manufacturing operation in China, with direct international shipping and just-in-time delivery to OEM customers. A secondary revenue stream is in development through a proprietary alloy licensing program, targeting automotive, aerospace, and heavy equipment manufacturers seeking access to L.E. Jones's patented alloys without internal R&D investment. The company meets a near-zero PPM quality benchmark, with many customers granting ship-to-use status, and positions itself as the world's largest valve seat insert manufacturer for high-performance engines.
L.E. Jones firmographics
Firmographics- Name
- L.E. Jones
- Legal name
- L.E. Jones Company
- Website
- https://lejones.com
- Company type
- Private
- Founded year
- 1941
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- L.E. Jones is a privately held, family-owned manufacturer founded in 1941 that produces precision valve seat inserts and related engine components from patented proprietary alloys. The company supplies global OEM engine manufacturers including Caterpillar, Volvo, and Cummins across heavy-duty diesel, natural gas, marine, locomotive, power generation, and aircraft markets.
- Ownership category
- akta.pro rank
L.E. Jones industry classification
Industry- Product category
- Engine Components
- NAICS
- Aerospace Product and Parts Manufacturing (33641), Aircraft Engine and Engine Parts Manufacturing (336412), Motor Vehicle Transmission and Power Train Parts Manufacturing (336350)
- SIC
- Aircraft Engines & Engine Parts (3724), Screw Machine Products (3451)
- akta.pro primary industry
- Class 7–8 Heavy-Duty Truck & Tractor Manufacturing (IMACABAC)
Keywords
Where L.E. Jones is headquartered
LocationHeadquarters
- HQ city
- Menominee
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
L.E. Jones business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure
Revenue model
- Precision Valve Seat Insert Manufacturing & Sales: L.E. Jones manufactures and sells precision valve seat inserts and other critical engine components (bushings, bearings, rings, etc.) directly to global OEM engine manufacturers. Products are produced to exacting tolerances in high volumes — tens of millions of parts annually — across a portfolio of approximately 700 different types of precision inserts, nearly all with unique alloy compositions. Revenue is generated through the sale of manufactured parts, with pricing governed by the company's Terms & Conditions of Sale (payment terms: net 30 days from invoice date).
- Proprietary Alloy Material Licensing: L.E. Jones licenses its advanced high-performance metal alloys to other companies for use in their own products and manufacturing processes. Licensing partners gain access to proprietary materials without internal R&D investment, with L.E. Jones providing technical support for integration. This represents a prospective royalty/licensing revenue stream targeting automotive, aerospace, and heavy equipment manufacturers.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | B2B OEM component sales — quote-based pricing |
Go-to-market motion3 records
Distribution channels2 records
Marketing channels6 records
L.E. Jones product offering
Product offeringCore offering
L.E. Jones is the world's largest manufacturer of precision valve seat inserts (VSIs) for high-performance heavy-duty engines, producing tens of millions of parts annually across approximately 700 different insert types, almost all with unique alloy compositions. The company develops its own proprietary metal alloys (cast, powder metal, centrifugal, and welded) using a patented resin-bonded shell mold near-net-shape casting process and supplies these inserts along with complementary bushings, bearings, and rings directly to global OEM engine manufacturers in heavy-duty diesel, natural gas, marine, locomotive, power generation, aircraft, and racing markets.
Product overview
L.E. Jones is a manufacturer of precision valve seat inserts (VSI) for high-performance heavy-duty engines. The company's product portfolio centers on its core offering — precision valve seat inserts manufactured from dozens of patented proprietary alloys including cast, powder metal, centrifugal, and welded variants. The portfolio extends to complementary components (bushings, bearings, rings) and is supported by a suite of engineering and manufacturing services: Materials R&D, foundry operations using a near-net-shape resin-bonded shell mold process, cellular manufacturing, technological and analytical testing (Plint Wear Testing, Bruker TriboLab, SEM/EDS, NDT methods), design assistance leveraging a proprietary valve train database, material licensing, and a Learn Module educational resource. The company serves diverse engine markets including heavy-duty diesel, natural gas, marine, locomotive, aircraft, and power generation.
Differentiator
Problem solved
Functional benefit
Products and services
- Precision Valve Seat Inserts (VSI)
Quantifiable outcome
- Near zero parts per million (PPM) quality performance
- +4 more outcomes
Companies that use L.E. Jones
Customer profileNamed customers4 records
Segments8 records
Ideal customer profiles6 records
L.E. Jones technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
L.E. Jones partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- ASM InternationalminorL.E. Jones contributes technical knowledge to the broader materials science community through publications in ASM International. Dr. Paul Qiao authored an article on sustainable alloy solutions for engine valvetrain applications published in ASM International (J513, January 2023).
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
L.E. Jones competitors and assessment
Company assessmentBroad incumbents
- Rheinmetall AG: German industrial group with an Automotive division supplying engine blocks, cylinder heads, and valvetrain components to heavy-duty OEMs. Comparable product range on the automotive side, though Rheinmetall is also a major defense contractor.
- Precision Castparts Corp. Berkshire Hathaway-owned manufacturer of precision castings and engineered components for aerospace and industrial markets. Comparable precision casting capabilities, though at much larger scale and focused on different end markets than L.E. Jones.
- MAHLE GmbH: Large German automotive supplier of engine components, filtration, and thermal management, including valve train components. Overlaps with L.E. Jones in engine parts but operates at much greater scale across many product categories.
- BorgWarner Inc. US-listed global supplier of powertrain and engine components, including valvetrain systems, for combustion, hybrid, and electric vehicles. Direct overlap with L.E. Jones in valvetrain but operates at vastly greater scale and with broader electrification exposure.
- Eaton Corporation: Diversified industrial manufacturer with a Vehicle Group that supplies engine and valvetrain components to heavy-duty and commercial vehicle OEMs. Comparable customer base but much broader product portfolio than L.E. Jones.
- Federal-Mogul (Tenneco / DRiV): Legacy powertrain and engine components manufacturer (now part of Tenneco / DRiV after Tenneco's restructuring) with a broad portfolio including valve train components. Serves similar heavy-duty and light-vehicle OEMs at much larger scale than L.E. Jones.
- Dana Incorporated: US-listed supplier of drivetrain, sealing, and thermal management components for light, commercial, and off-highway vehicles. Adjacent product portfolio with shared heavy-duty and off-highway OEM customers.
Direct peers
- Riken Corporation: Japanese manufacturer of piston rings, valve seat inserts, and other engine components for global automotive and small-engine OEMs. Closest like-for-like competitor to L.E. Jones in the VSI market.
- NPR of Europe (Nippon Piston Ring): European arm of NPR Group, producing piston rings and related engine components including valve seat inserts. Directly comparable product portfolio and serves overlapping heavy-duty and small-engine OEM customers.
- TPR Co., Ltd. Tokyo-listed Japanese manufacturer of piston rings and valve seat inserts for automotive and motorcycle engines. Most direct comparable to L.E. Jones in the VSI category, with overlapping OEM customers in Asia.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
L.E. Jones social profiles
Digital presenceL.E. Jones financial estimates
Financial estimateRevenue estimate
Valuation estimate
L.E. Jones leadership team
Management profileNumber of profiles
Profiles1 record
L.E. Jones funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
L.E. Jones 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 L.E. Jones
What does L.E. Jones do?
L.E. Jones is the world's largest manufacturer of precision valve seat inserts (VSIs) for high-performance heavy-duty engines, producing tens of millions of parts annually across approximately 700 different insert types, almost all with unique alloy compositions. The company develops its own proprietary metal alloys (cast, powder metal, centrifugal, and welded) using a patented resin-bonded shell mold near-net-shape casting process and supplies these inserts along with complementary bushings, bearings, and rings directly to global OEM engine manufacturers in heavy-duty diesel, natural gas, marine, locomotive, power generation, aircraft, and racing markets.
Is L.E. Jones a public or private company?
L.E. Jones is a private company. It is classified as family owned and is currently operating.
When was L.E. Jones founded?
L.E. Jones was founded in 1941. It employs 51 to 100 people.
Where is L.E. Jones based?
L.E. Jones is headquartered in Menominee, United States, in the North America region.
How does L.E. Jones make money?
Two revenue lines are on record. Precision Valve Seat Insert Manufacturing & Sales are the primary driver. The others are proprietary Alloy Material Licensing.
Who are L.E. Jones's main competitors?
Broad incumbents on record are Rheinmetall AG, Precision Castparts Corp., MAHLE GmbH, BorgWarner Inc., Eaton Corporation, Federal-Mogul (Tenneco / DRiV) and Dana Incorporated. Direct peers are Riken Corporation, NPR of Europe (Nippon Piston Ring) and TPR Co., Ltd..
Does L.E. Jones have an API?
No public API is recorded for L.E. Jones.
What industry is L.E. Jones in?
L.E. Jones's product category is Engine Components. Its primary akta.pro industry code is IMACABAC, Class 7–8 Heavy-Duty Truck & Tractor Manufacturing. Its NAICS code is 33641 and its SIC code is 3724.