--- title: "Automotive Manufacturing | Custom & Motorsport Parts | OpenSpindle" description: "Find independent machine shops for automotive, motorsport, and aftermarket parts. IATF 16949, ISO 9001, and PPAP-capable shops for prototype and production work. Upload a drawing." canonical: https://openspindle.com/industries/automotive --- # Automotive manufacturing partners From OEM production parts to motorsport one-offs and aftermarket upgrades, automotive work runs the full range of volume and rigor. Find independent machine shops set up for automotive parts, then talk directly to the shop making yours. **Certifications:** IATF 16949, ISO 9001, PPAP ## Automotive shops on OpenSpindle Real shops that machine and fabricate automotive, motorsport, and aftermarket parts. See their equipment and certifications, and talk to the person making your part. [Browse all automotive shops](https://openspindle.com/manufacturers?q=Automotive) ## Certifications For automotive work, the right certification depends on where the part is going. OEM production has strict quality gates, while motorsport, aftermarket, and prototype work is often far less certification-gated. Confirm the specific scope for your part. - **IATF 16949:** The automotive quality management standard, built on ISO 9001 with additional requirements for production and service parts. The baseline expectation for OEM and tier-one production supply chains. - **ISO 9001:** The general quality management baseline. Common on shops that do automotive work outside OEM production, and often sufficient for aftermarket, motorsport, and prototype parts. - **PPAP:** Production Part Approval Process, the automotive workflow for demonstrating that a shop can consistently make a part to print before volume production. Required by most OEM and tier-one customers on new parts. - **Motorsport & aftermarket work:** Motorsport, aftermarket, and prototype parts are usually less certification-gated than OEM production. Here the priorities are turnaround, material selection, and a shop that can iterate on a design, so judge shops on capability and communication rather than a certificate. ## Capabilities for This Industry - [CNC Machining](https://openspindle.com/capabilities/cnc-machining.md) -- Milled brackets, housings, and prototype parts from aluminum and steel. - [CNC Turning](https://openspindle.com/capabilities/cnc-turning.md) -- Turned shafts, axles, spacers, and fittings to tight tolerances. - [5-Axis Machining](https://openspindle.com/capabilities/5-axis-machining.md) -- Complex manifolds, intakes, and contoured parts in a single setup. - [Sheet Metal & Press Brake](https://openspindle.com/capabilities/sheet-metal-fabrication.md) -- Formed brackets, panels, and enclosures from sheet and plate. - [Welding](https://openspindle.com/capabilities/welding.md) -- TIG and MIG welded assemblies for chassis, mounts, and exhaust. - [Tube Bending](https://openspindle.com/capabilities/tube-bending.md) -- Roll cages, exhaust, and chassis tube bent to spec. ## Common Materials - [Aluminum](https://openspindle.com/materials/aluminum.md) -- 6061 and 7075 for lightweight brackets, housings, and components. - [Carbon & Alloy Steel](https://openspindle.com/materials/carbon-steel.md) -- 4140 and 4340 for high-strength driveline and suspension parts. - [Stainless Steel](https://openspindle.com/materials/stainless-steel.md) -- 304 and 321 for exhaust, hardware, and corrosion resistance. - [Brass](https://openspindle.com/materials/brass.md) -- Fittings, bushings, and fluid connections that need machinability. - [Delrin](https://openspindle.com/materials/delrin.md) -- Low-friction bushings, spacers, and wear surfaces. - [Nylon](https://openspindle.com/materials/nylon.md) -- Tough wear parts, guides, and vibration-tolerant components. ## Typical Parts - Brackets & mounts - Housings & covers - Shafts & axles - Fittings & fasteners - Manifolds & intakes - Bushings & bearings - Tube & exhaust assemblies - Pulleys & gears ## Why OpenSpindle - **Talk directly to the shop:** No account manager in the middle. You work with the shop actually making your part, which matters when a design needs a real engineering conversation or a fast iteration. - **No sales gate:** Upload a drawing and request quotes without a sales rep or account manager in the middle. Faster than the login-walled portals. - **Prototype and motorsport friendly:** Independent shops routinely quote single prototypes, race one-offs, and small aftermarket batches, not just high-volume production runs. - **Compare multiple shops:** See several independent shops set up for automotive work and compare quotes rather than taking a single price. ## Frequently Asked Questions ### Do you cover motorsport and aftermarket parts, not just OEM? Yes. Many shops on OpenSpindle focus on motorsport, aftermarket, and restoration work, which is usually less certification-gated than OEM production. For these parts, judge a shop on capability, materials, and turnaround rather than a formal automotive certificate. ### Can I find IATF 16949 shops for production parts? Some automotive shops carry IATF 16949 and list it on their profile alongside ISO 9001. For OEM or tier-one production, shortlist those shops and confirm the certification is current and covers your part and process, including any PPAP requirement. ### Can I get low-volume or prototype automotive parts? Yes. Independent shops quote single prototypes, small aftermarket batches, and low-rate production. Expect a setup charge on one-offs that drops on repeat orders. Note your quantity so shops can price it correctly. ### Can shops do tube bending for roll cages and exhaust? Yes. Look for shops with tube bending and welding capability for roll cages, chassis tube, and exhaust systems. Provide bend radii, tube diameter and wall thickness, and material so the shop can confirm fit and quote the work. ### Which materials are common for automotive parts? Aluminum (6061, 7075) for lightweight parts, alloy steels (4140, 4340) for high-strength driveline and suspension components, stainless (304, 321) for exhaust and hardware, plus brass, Delrin, and nylon for fittings, bushings, and wear parts. Note the alloy, temper, and any heat treat you need. ### What tolerances can automotive shops hold? Precision automotive shops commonly hold milled features to around plus or minus 0.002 inch and turned diameters tighter, with grinding for critical bearing and seal surfaces. Call out the critical dimensions, surface finishes, and any fits on your drawing so the shop quotes them correctly. ### What files should I send for a quote? STEP, IGES, X_T, or a fully dimensioned PDF drawing with material, finish, tolerances, and quantity. For tube and weldments, include bend and joint details. A CAD model plus a drawing that flags the critical dimensions gets you the most accurate quote. ## Related Industries - [Aerospace & Defense](https://openspindle.com/industries/aerospace-defense.md) - [Medical Devices](https://openspindle.com/industries/medical-devices.md) - [Robotics & Automation](https://openspindle.com/industries/robotics-automation.md) - [Energy / Oil & Gas](https://openspindle.com/industries/energy-oil-gas.md) - [Electronics](https://openspindle.com/industries/electronics.md) - [Architecture & Construction](https://openspindle.com/industries/architecture-engineering-construction.md) ## Get automotive parts quotes Upload a drawing once and compare quotes from independent shops set up for automotive, motorsport, and aftermarket work.