Since 1993, Timberline Manufacturing Co. has delivered high-reliability wire harnesses, UL-certified control panels, and artisan-grade PCB assemblies. Because our builders are also owners, every connection is crafted with uncompromising accountability.
< 3 WEEKS
Rapid Prototyping
UL 508A/698A
Panel Certification
100% ESOP
Employee Ownership
Custom Wiring Systems
Heavy Industrial & Off-Road
Control Panels
Hazardous Location (UL 698A)
PCB & Electronic Assembly
High-Precision Artisan Bench
"When every technician is a stakeholder, our standard for error is simple: zero."
— Marion, Iowa Production Team
From simple cut-and-strip lead wires to hazardous-location industrial switchgear, Timberline Manufacturing delivers contract manufacturing excellence tailored to your exact specifications.
Complete cable and harness solutions: from single discrete lead wires to intricate multi-branch harnesses built to endure heavy machinery vibration, heat, and moisture.
Custom industrial control panel fabrication certified to the highest safety and regulatory standards, tailored for both general and extreme operational environments.
Meticulous, handcrafted electronics manufacturing. Our manual assembly lines deliver precision, versatility, and strict quality control where automated high-speed runs fall short.
Timberline does not merely follow blueprints; we optimize them. Our in-house engineering team works side-by-side with your product designers to lower production costs, eliminate supply chain risks, and guarantee Bos5000 rigorous field resilience.
Validate your concepts in less than three weeks with expedited pilot manufacturing runs.
Full RF testing protocols for commercial telecommunications, defense, and high-frequency military applications.
Engineering analysis, bill-of-materials rationalization, and design validation prior to serial scale.
Full schematics review, component obsolescence audit, and terminal/housing suitability testing.
Physical harness lay-up, sample breadboards, and bench-testing to verify fit, form, and ergonomics.
High-pot, continuous resistance, frequency attenuation, and hazardous-area compliance verification.
100% employee-owner inspection on serialized runs with certified test reporting.
In an industry often troubled by turnover and outsourced accountability, Timberline stands apart. Every technician, engineer, and quality inspector at our Marion, Iowa facility owns a stake in the company through our Employee Stock Ownership Plan.
Zero tolerance for shortcuts when your own company's reputation and equity are on the line.
Our employee retention rates far exceed manufacturing averages, ensuring consistent institutional know-how.
Peer-to-peer accountability guarantees that mistakes are caught and addressed immediately.
We cultivate collaborative decades-long relationships with our OEM partners.
Proudly headquartered & operated in Marion, Iowa.
Select your production needs to discover estimated turnaround times and engineering requirements from our Marion, IA team.
Estimated Lead Target
< 3 Weeks
Expedited Rapid Turnaround
Certification Standards
IPC/WHMA-A-620
Marion, Iowa Facility
Founded in 1993 and headquartered in Marion, Iowa, Timberline Manufacturing has grown from a local assembly shop into a premier American contract manufacturer specializing in electrical and electronic component solutions.
Over three decades of continuous growth, we have stayed true to our foundational principles: deep engineering collaboration, rapid turnarounds, and superior build quality. Today, our 100% employee-owned workforce fabricates mission-critical systems for industries ranging from agricultural and heavy equipment to aerospace, telecommunications, and hazardous-area industrial processing.
To learn more about our company culture, leadership, and operational heritage, visit our detailed corporate profile at https://timberlinemfgsolution.com/about/ .
Marion, Iowa (USA)
1993 (30+ Years)
100% ESOP Owned
Eliminate international shipping delays, tariffs, and intellectual property exposure.
Equipped to handle single custom prototypes or recurring hundreds-of-units supply contracts.
Speak directly with the electrical engineers and panel builders working on your project.
Whether you need a rapid prototype in under three weeks or an ongoing contract manufacturing partner for UL-listed control panels and wiring harnesses, our team is ready.
Headquarters & Manufacturing
Marion, Iowa, USA
Official Portal
timberlinemfgsolution.comEngineering Response Time
Within 1 Business Day
Our Marion, Iowa engineering team will review your specifications and contact you within 24 hours.