When a linear accelerator is down, every hour matters. A fault may be diagnosed quickly, but if the board is on backorder, the machine can still sit for days. The parts department at 43 Oncology is here to reduce that downtime. We stock, test, and ship linear accelerator parts for Varian, Elekta, and Siemens platforms, and the people handling your order are the same OEM-trained engineers who service these machines in the field.
Know the part you need? Tell us the model, and we’ll check stock. Klystrons, Magnetrons, Thyratrons, MLC components and more — tested, warrantied, with exchange options. Most stocked items ship same day.
✆ Call (844) 434-3662 · Request a Parts Quote →
That is the difference between a parts supplier and a parts broker. A broker matches a part number to a box on a shelf. Our parts team has pulled components from working machines, knows which revisions interchange and which don’t, and will tell you whether the symptom you’re chasing points to a different part or the one you’re about to buy.
What We Stock
Our inventory covers the platforms that make up the bulk of the installed base, with particular depth on end-of-life systems where OEM support is limited.
On the Varian side, that means C-Series Clinac, iX, and Trilogy through TrueBeam: magnetrons, klystrons, thyratrons, waveguide components, gun drivers, MLC motors and controllers for Millennium leaves, monitor chambers, OBI and PortalVision imaging boards, hand pendants, couch drive assemblies, and console hardware. If you maintain a fleet of Clinacs or Trilogys, you already know the OEM’s appetite for supporting them is fading while your machines keep treating. Sourcing replacement parts for those platforms is where an independent inventory comes in handy.
On the Elekta side, we support Precise, Synergy, Infinity, and Versa HD: magnetrons and RF components; MLCi and MLCi2 assemblies; Agility leaf motors; iView and XVI imaging components; Precise Table parts; and control system boards. Cross-generational compatibility runs deeper in the Elekta machines than most suppliers realize, and our engineers can tell you when a Synergy-era component fits into an Infinity without issues and when it does not.
Elekta Synergy linear accelerator parts are in stock. Please give us a call with your needs.
Consumables and accessories round out the catalog — mylar, crosshairs, touchguards, SF6, cables, interlock switches, and the small hardware that never seems to be in the crash kit when you need it.
Tested Before It Ships
Every functional component we sell is tested before it leaves the building. Boards are powered and exercised, not just visually inspected. RF components are verified against spec. Parts that pass go on the shelf with test documentation; parts that do not get repaired or scrapped. When a part arrives at your site, it should install and run — a dead-on-arrival board does not just waste a shipping cycle; it burns a service window you may have fought the department schedule to get.
Where OEM-new is the right call, we source OEM. Where a tested, refurbished component does the same job at a lower list price, we’ll say so. The goal is uptime per dollar, not maximizing the invoice.
Exchange and Repair Options
For high-value components — MLC controllers, imaging boards, and power supplies — we offer core exchange. You get a tested replacement on the way immediately; your failed unit is returned to us for evaluation and repair, if possible. Exchange pricing helps keep the cost of board-level failures manageable, particularly on Trilogy- and Synergy-era systems, where board repair is still economical, and the OEM would rather sell you an upgrade path.
If you have a failed component and time on your side, our repair service can often bring it back at well below replacement cost. Send it in for evaluation, and we’ll quote before any work starts.
Ordering Is a Conversation With an Engineer
Call with a part number, and we’ll confirm fit, revision, and availability. If we don’t have what you need on the shelf, our sourcing network across the independent service community usually finds it. Hard-to-find accelerator parts for legacy systems are a specialty, not an exception.
For engineers who prefer to buy Varian parts or Elekta spare parts on a recurring basis, we can set up standing arrangements for consumables and high-turnover items so your stockroom stays ahead of your fleet.
Backed by the Service Operation
Because 43 Oncology runs a full linac service organization — installation, repair, removal, and service contracts across Varian, Elekta, and Siemens platforms — the parts department isn’t guessing about what fails and when. Our stocking decisions are based on field failure data from machines we maintain. If Trilogy gun drivers are trending, we’re deep on gun drivers. If Agility motors are aging out across the installed base, we’ve already bought ahead of it.
Get a Quote
Send a part number, a photo of the label, or a description of the board, and we’ll respond with availability, price.
Call (844) 434-3662 to check stock and place an order for Varian and Elekta linac parts, or contact our engineering team directly.
Do you test linac parts before shipping?
Yes — every functional component is powered and exercised (boards not just visually inspected)
Do you stock parts for legacy Clinac and Trilogy systems?
Yes — C-Series Clinac, iX, and Trilogy are a specialty, including magnetrons, klystrons, MLC motors, and OBI/PortalVision imaging boards.
Do you offer core exchange on high-value boards?
Yes — for MLC controllers, imaging boards, and power supplies, you get a tested replacement immediately and return the failed unit for repair.
Can you source hard-to-find legacy accelerator parts?
Yes — our sourcing network across the independent service community specializes in hard-to-find parts for end-of-life systems.
Do you carry Elekta Synergy parts?
Yes — Synergy, Infinity, Precise, and Versa HD parts including magnetrons, MLCi/MLCi2 assemblies, Agility motors, and XVI/iView components.