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Precision machined automotive component CNC machined automotive housing
On-Demand CNC Platform

Precision CNC Machining for
Automotive Components

Precision CNC machining for engine components, transmission parts, suspension brackets, EV battery housings, and performance aftermarket parts — from prototype through production.

Securely upload your 3D CAD file for immediate pricing and DFM feedback.

$100B+
US auto parts market
annual revenue
IBISWorld 2024
1,500+
Auto parts manufacturers
across the United States
Census CBP 2023
±0.001"
Standard tolerances
on automotive components
RivCut capability
3-Day
Rush turnaround
available on prototypes
RivCut lead times

Precision CNC Machining for Automotive Teams

Automotive companies need parts that are dimensionally accurate, repeatable, and delivered on time. A transmission housing that's off by a few thousandths can cause NVH issues and field failures. We machine aluminum, steel, titanium, and stainless steel parts to tolerances as tight as ±0.0005 inches. Every order ships with CMM inspection reports, material certs, and documentation your quality team can use for PPAP and incoming inspection.

1

Automotive-Grade Materials

We source and machine aluminum 6061-T6, 7075-T6, 4140 steel, 4340 steel, 303/304 stainless, and titanium 6Al-4V — all with full material certs and traceability.

2

Tight Tolerances

We hold ±0.001" on general features and ±0.0005" on critical bores, bearing seats, and mating surfaces. Every part is CMM verified before shipping.

3

Full Documentation

Dimensional inspection reports, material certs, and process records on every order. We support PPAP documentation and IATF 16949-aligned quality requirements.

Built for Automotive Teams

Your program needs a machining partner who delivers production-ready quality on every order.

Automotive Material Expertise

We machine aluminum 6061, 7075, A356, 4140 and 4340 steel, stainless, and titanium. Every order ships with certified mill certs and heat lot traceability.

CMM Inspection

Every critical dimension is verified before shipping. Your receiving team gets a documented inspection report — no guessing, no shortcuts.

PPAP Documentation

We provide dimensional inspection reports, material certs, and process records that support PPAP submissions and IATF 16949 supplier requirements.

Fast Response

Upload your file and get a response fast. Automotive prototypes in 3–7 days. We communicate directly — no layers of sales reps between you and the shop floor.

Get Instant Quote

Parts for Automotive Companies

Engine components, drivetrain parts, EV housings, and more.

Engine & Powertrain Components

Cylinder heads, intake manifolds, valve covers, turbo housings, and engine brackets machined from aluminum 6061, 7075, and cast A356. Complex port work, tight bore tolerances, and leak-free sealing surfaces.

Al 6061 & 7075

Transmission & Drivetrain Parts

Transmission housings, differential cases, transfer case components, shift forks, and driveshaft adapters machined from aluminum and steel. Precise bearing bores and gear mesh clearances.

±0.001" standard

Suspension & Chassis Brackets

Control arms, strut mounts, subframe brackets, sway bar links, and shock tower reinforcements machined from aluminum 7075, 4140 steel, and 4340 steel. Lightweight and high strength.

High-strength alloys

EV Battery & Motor Housings

Battery enclosures, motor housings, inverter heat sinks, cooling plates, and bus bar connectors machined from aluminum. Tight flatness for sealing surfaces, thermal management features, and EMI shielding.

EV-ready

Brake System Components

Brake calipers, caliper brackets, master cylinder bodies, rotor hats, and hydraulic brake line fittings machined from aluminum, stainless steel, and iron. Critical safety tolerances on every feature.

Safety-critical

Performance & Aftermarket Parts

Billet intake manifolds, throttle bodies, adapter plates, widebody brackets, roll cage mounts, and custom one-off components. Aluminum, steel, and titanium for motorsport and street applications.

Custom & billet
CNC machined EV motor housing undergoing CMM inspection at RivCut
CMM Verified — All Critical Dimensions Passed

EV Motor Housing — A356 Cast Aluminum

Machined for an EV startup developing a high-performance electric drivetrain. Bore concentricity and sealing surface flatness were critical. Delivered in 5 business days with full documentation package.

±0.001"
Bore concentricity
on motor housing
32 Ra
Surface finish on
sealing interfaces
5 Days
Quote to delivery
on prototype lot
100%
First article inspection
pass rate
  • Dimensional inspection report (CMM data included)
  • Material certification & heat lot traceability
  • PPAP-ready documentation package
  • Certificate of Conformance per purchase order specs

Real Automotive Parts. Real Results.

See how we solve machining challenges for automotive teams.

Serving the US Automotive Industry

The US automotive industry is a $100B+ market with OEMs, Tier 1 suppliers, EV startups, and aftermarket companies all needing precision-machined components.

From Detroit's legacy automakers to Tesla's EV supply chain, every vehicle program depends on machine shops that can deliver tight-tolerance parts on time with full documentation.

Whether your team is building production vehicles, racing programs, or EV prototypes, we want to be your machining partner. We ship anywhere in the US and give you instant AI pricing the moment you upload your file.

GM — General Motors

America's largest automaker with a massive supply chain spanning thousands of Tier 1 and Tier 2 suppliers across the country for ICE and EV programs.

Ford Motor Company

From the F-150 to the Mustang Mach-E, Ford's vehicle programs require precision-machined prototypes and production components across every platform.

Tesla — EV Leader

Tesla's rapid development cycles and vertically integrated manufacturing demand fast-turnaround precision machining for motors, battery systems, and structural components.

Stellantis & Toyota

Global OEMs with deep US manufacturing footprints. Their Tier 1 and Tier 2 supplier networks create constant demand for CNC-machined components.

Documentation. Quality. Repeatability.

Automotive work demands more than good parts. Here is what you get on every order.

Full Documentation

PPAP-ready paperwork on every automotive order.

  • Dimensional inspection reports
  • Material certs with heat lot traceability
  • First article inspection reports
  • PPAP-supporting process records

Verified Quality

CMM inspection before we ship. No exceptions.

  • CMM inspection on every order
  • NIST-traceable calibrated gauges
  • ±0.001" standard, ±0.0005" critical
  • Free DFM review on every upload

Process Repeatability

Consistent results from first article through production.

  • Documented machining processes
  • Fixture and toolpath records retained
  • Consistent quality across reorders
  • Scalable from prototype to production
Certifications & Standards
In Progress
IATF 16949
Automotive quality management system. We're building our QMS to this standard. Our documentation follows the structure now.
Active
NIST-Traceable Gauges
All measuring equipment is calibrated to NIST standards on regular cycles. CMM, micrometers, and gauges.
Active
Material Certifications
Every order ships with mill certs and heat lot traceability. Records kept for your audit trail.
Planned
PPAP Documentation
Production Part Approval Process documentation. On our roadmap to support full PPAP submissions for automotive production orders.

Questions about our current quality setup? Email us — we'll send our documentation package.

From File to Part in 3 Steps

Simple, clear, and designed for fast-moving automotive teams.

Step 1

Upload & Quote

Send your STEP or IGES file. Pick your material, quantity, and finish. Our AI gives you a real price right away. We also run a free DFM check and flag anything that could add cost.

Step 2

We Machine & Inspect

Your parts run on our CNC mills and lathes. Every order gets CMM inspection. We check every critical feature against your drawing before anything ships.

Step 3

Ship with Full Docs

Parts ship with your dimensional inspection report, material certs, and all automotive-grade paperwork. Everything your quality team needs for PPAP review and incoming inspection.

Questions from Automotive Teams

We machine engine blocks, cylinder heads, intake manifolds, transmission housings, differential cases, suspension brackets, brake calipers, EV battery enclosures, motor housings, and performance aftermarket parts. Upload your STEP or IGES file for instant AI pricing.
We machine aluminum 6061-T6, 7075-T6, A356 cast aluminum, 4140 and 4340 steel, 303 and 304 stainless steel, titanium 6Al-4V, and brass. We source material with certified mill certs and full traceability.
We are working toward IATF 16949 certification. In the meantime, we provide dimensional inspection reports, material certs, and process records on every automotive order. We can support PPAP documentation requirements upon request.
Most automotive prototype parts ship in 5 to 7 business days. Rush orders on simple geometries can ship in as few as 3 days. Tell us your deadline when you upload — we'll confirm what's possible.
We hold ±0.001 inches on general features and ±0.0005 inches on critical bores, bearing seats, and mating surfaces. Every part is CMM inspected and documented before shipping.
Yes. We machine aluminum battery enclosures, motor housings, inverter heat sinks, and cooling plates for electric vehicle programs. We handle the tight flatness and sealing surface requirements that EV components demand.
We offer as-machined, anodize Type II and III, hard anodize, black oxide, nickel plating, powder coat, bead blast, and passivation. Tell us your finish spec — we'll confirm before production.
Upload your STEP or IGES file at rivcut.com/quote. Choose your material and finish. Our AI gives you a price right away. For complex parts or production volumes, email hello@rivcut.com and we'll review before confirming pricing.

Upload Your Automotive CAD File

Engine components, transmission parts, EV housings, brake calipers — we machine them all. Get instant AI pricing now. Prototypes ship in as few as 3 days.

No minimums · 100% Made in USA · Never brokered · Ships anywhere in the US

AI price estimates are usually within ±20% of final price. Complex parts may get a human review within one business day before pricing is confirmed.

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RivCut AI Assistant

Ask about automotive machining, materials, pricing

Hi! I'm RivCut's AI assistant. Ask me anything about automotive CNC machining — materials, tolerances, documentation, or pricing.