Custom Parts Houston TX
Custom and Replacement Parts in Houston, Texas
Spline Arc LLC makes custom parts and replacement parts in Houston from your file, your sketch, or the broken part itself. Single parts or small batch runs, a fixed price quote within 24 hours, and free delivery across Greater Houston.
Made in Houston with free delivery across the greater metro area.
Parts We Make Every Week
Discontinued Parts
When the manufacturer stops selling a part, we recreate it so the equipment you already own keeps working.
Reverse Engineering
Hand us a broken or worn sample. We measure it, model it, and make a new part that fits the first time.
Automotive and Equipment
Clips, trim, covers, ducts, knobs, and mounts for vehicles, machinery, and shop equipment.
Brackets, Housings, Enclosures
Functional mounting brackets, sensor housings, and electronics enclosures built to your dimensions.
Replacement Parts for Discontinued Items
A single cracked clip or worn knob can sideline an expensive machine, a vehicle, or a piece of shop equipment when the original manufacturer no longer sells it. Instead of replacing the whole assembly, Houston teams send us the part they need and we make a new one. We recreate discontinued components for industrial equipment, older vehicles, appliances, fixtures, and legacy systems where the supplier has moved on or the lead time is measured in months.
Once we have modeled your part, we keep the file on record. When you need another one next year, reordering is a single email and the new part matches the last one exactly.
Reverse Engineering From a Sample
You do not need a drawing to get a part made. Bring us the original, even if it is broken into pieces, and we measure every critical feature: hole locations, mounting faces, snap fits, wall thickness, and mating surfaces. We build a clean digital model, produce a fit check part for you to test, and adjust if anything needs to change. After you approve the fit, we run the final quantity.
Reverse engineering also lets us improve a weak design. If the original part always cracked in the same spot, we can add material where it fails while keeping the fit identical.
Automotive and Equipment Parts
We make functional parts for cars, trucks, fleet vehicles, restoration projects, and the equipment that keeps Houston businesses running. Typical orders include interior trim pieces, panel clips, vent louvers, dash covers, air ducts, spacers, guards, handles, and knobs. For shops and plants we produce machine guards, tool holders, cable guides, and the small components that are hard to find when something breaks.
Need the same part in quantity? We also offer small batch manufacturing in Houston for repeat releases without tooling cost.
Brackets, Housings, and Enclosures
Custom brackets, mounting plates, sensor housings, and electronics enclosures are some of the most practical parts we make. Engineers and technicians use them to mount equipment in tight spaces, protect wiring and circuit boards, and adapt off the shelf hardware to a specific install. Each part is built to your dimensions, with the holes, bosses, lids, and cutouts exactly where you need them.
We serve teams across oil and gas, aerospace, industrial manufacturing, and government. See our oil and gas work, aerospace programs, and full capabilities.
How Ordering a Custom Part Works
- 01
Send a File, Sketch, or Sample
Email a CAD file, a sketch with measurements, photos, or drop off the original part. Any starting point works.
- 02
Get a Fixed Price Quote
We review what you sent and reply with a fixed price quote within 24 hours.
- 03
Fit Check and Production
For reverse engineered parts we confirm fit first, then produce the final quantity and inspect every part.
- 04
Free Houston Delivery
Finished parts are delivered free across Greater Houston, right to your shop, site, or office.
Frequently Asked Questions
Can you make a replacement part for something that is no longer sold?
Yes. Discontinued parts are one of our most common requests. Send us the broken part, a photo with measurements, or an old drawing and we will recreate it so your equipment can go back into service.
Can you reverse engineer a part from a physical sample?
Yes. We measure your sample, build a new digital model, and print a fit check part before running the final quantity. You keep the model for future reorders.
Do I need a CAD file to order a custom part?
No. A sketch, photo, written description, or the original part is enough to start. We prepare the model as part of the project.
What kinds of automotive and equipment parts can you make?
We make clips, trim pieces, knobs, covers, ducts, spacers, mounts, guards, and similar functional parts for vehicles, machinery, and shop equipment.
Can you make brackets, housings, and enclosures?
Yes. Brackets, sensor housings, electronics enclosures, cable guides, and mounting plates are everyday work for us, from a single part to a small batch run.
Is there a minimum order?
No. Order one replacement part or a small batch of the same design. Pricing is fixed before we start.
How fast can I get a quote?
Email your file, sketch, or photos to hello@splinearc.com or use the contact form. We reply within 24 hours with a fixed price quote.
Do you deliver across Houston?
Yes. Delivery is free across Greater Houston, including Sugar Land, Katy, Cypress, The Woodlands, Pearland, Spring, and Humble.
Need a part made? Get your quote in 24 hours.
Send a file, sketch, photo, or the broken part and we will respond within one business day.