Cummins spends billions a year on parts, materials, logistics, and services to build engines, power systems, and increasingly hydrogen and battery components. That spend runs through a structured procurement organization, not a general-inquiry inbox. So if your plan is to email a buyer and hope, you'll wait a long time. The companies that get sourced understand two things up front: where Cummins actually registers vendors, and what its supplier diversity team screens for before your name ever reaches a category manager.
Here's how the front door really works.
What Cummins buysCummins splits its purchasing into two broad lanes, and which one you fall into changes who you talk to.
Direct spend is everything that goes into the product: castings, forgings, machined components, electronics, fuel systems, aftertreatment parts, raw materials. These suppliers face the heaviest qualification bar because their parts affect engine performance and warranty.
Indirect spend is everything that keeps the company running: facilities, MRO, IT, professional services, marketing, logistics, packaging, capital equipment. Indirect is usually the more realistic entry point for a smaller or newer business, and it's where supplier diversity efforts tend to find the most early traction.
Cummins also runs a global manufacturing footprint, so location matters. A supplier near a plant in Columbus, Indiana, Jamestown, New York, or Rocky Mount, North Carolina has a logistics advantage that a buyer can see on a spreadsheet.
How registration actually worksCummins does not take cold applications through a public RFP form. Instead, prospective and current vendors work through the Cummins Supplier Portal at supplier.cummins.com, which the company describes as the public starting point for what you need to know to do business with them. The portal lays out Cummins' expectations on ethics, sustainability, environmental stewardship, and supplier diversity before you ever get to a transaction.
The transactional side runs on Supplierone (cummins.supplierone.co), Cummins' procurement platform. This is a managed system, not an open marketplace. A practical reality worth saying plainly: most new suppliers get a registration request initiated by a Cummins buyer who already has a reason to add them, rather than by self-serving their way in. Cummins publishes guidance specifically for "New Registration Requests," which signals the process is invitation-driven and that the buyer relationship usually comes first.
So the order of operations is the reverse of what most founders assume. You don't register and then get found. You get a buyer interested, and registration formalizes it.
Before you spend any time here, get your house in order:
- A clean capability statement that names Cummins-relevant commodities, your certifications, and your nearest-plant proximity.
- A D-U-N-S number and standard business documentation (W-9, insurance, quality certs where relevant).
- Quality credentials if you're chasing direct spend. ISO 9001 is table stakes; IATF 16949 matters for many automotive-grade components.
- A short, specific pitch. "We do machining" loses. "We run lights-out CNC turning for medium-volume steel components within 200 miles of your Seymour plant" gets a meeting.
Since the system favors warm entries, your job is to manufacture a legitimate reason for a buyer to start a registration request.
The highest-leverage move is certification plus visibility. Cummins runs a real, staffed Global Supplier Diversity Procurement function (diversityprocurement.cummins.com), and it actively works to grow the number of diverse suppliers doing business with the company. Diverse-owned businesses have a dedicated team whose entire job is to find and develop them. That's a door most suppliers don't even know exists.
Cummins also runs Cummins Supplier Connect, a sign-up channel that pushes out current news and information on its diversity procurement activity. It's free, it's low-effort, and it puts you on the list that hears about events, matchmaking, and sourcing pushes before the general supplier population does. If you qualify as diverse, register there early.
The other proven path is showing up where Cummins' diversity team already looks. The company recruits through national and regional councils, supplier matchmaking events, and conferences. Being a certified, active member of those networks is how you get into the rooms where Cummins buyers are looking for exactly what you sell. Our corporate program directory tracks which large buyers source through which councils so you can aim at the right ones.
The diversity-certification angleCummins' supplier diversity program is built around minority-owned, women-owned, and LGBT-owned businesses, and the company is explicit that this is not a set-aside or quota program. Diversity gets you a fair look from a team motivated to develop you. It does not exempt you from the quality, price, and capacity bar every supplier clears. Read that as good news: a buyer who sources you can defend the decision on merit, which makes the relationship durable.
To be treated as a diverse supplier, you need third-party certification, not a self-declaration. The certifications corporate programs of this size recognize are the national ones:
- NMSDC (MBE) for minority-owned businesses. If you're going to get one certification, this is usually it for corporate work. Our NMSDC certification guide walks through eligibility, cost, and timeline.
- WBENC (WBE) for women-owned businesses.
- NGLCC (LGBTBE) for LGBT-owned businesses, which maps directly to Cummins' stated LGBT supplier focus.
Confirm the exact bodies Cummins names on its current diversity site before you spend on a certification, but NMSDC, WBENC, and NGLCC are the standard set for a company at this scale. If you're certified, say so loudly and early. It changes who reviews your file.
Cummins also runs a Supplier Growth Program aimed at developing diverse suppliers who already have momentum. It expects participants to have a real business plan, demonstrated financial stability, and a posture built for growth. That's a useful filter even if you never apply: it tells you exactly what the diversity team values in the suppliers it bets on.
If juggling NMSDC plus a state or federal certification at the same time sounds like a second job, that's the problem CertifyAll exists to solve. And if you want a public, searchable profile so buyers can find you between events, list your business in our supplier directory.
The Tier-2 side doorThere's a quieter way in that bypasses the main qualification gauntlet. A company the size of Cummins reports its diverse spend not only on what it buys directly (Tier 1) but on what its own large suppliers spend with diverse businesses (Tier 2). Those prime suppliers have their own diversity commitments to hit, and they're often hunting for certified diverse subcontractors to count toward them.
Cummins publishes the terms and reporting expectations around diverse spend, which is the infrastructure that makes second-tier sourcing work. The practical takeaway: instead of trying to land Cummins directly, identify the large primes already in Cummins' supply chain and pitch them. You get into the ecosystem, you build a reference customer, and you become far easier for a Cummins buyer to register later. Cummins couldn't confirm a formally branded Tier-2 program name in what's public, so verify the current structure with its diversity team, but the mechanism is standard at this size and worth working.
Where to point your effortGet certified, register on Cummins Supplier Connect, tighten your capability statement around a specific commodity and a specific plant, and work the councils where Cummins' diversity team actually recruits. Treat the Supplier Portal registration as the formality at the end, not the opening move.
If you want to map which other major buyers source the way Cummins does, our corporate program directory is a good next stop.
