If your Hyundai excavator throttle control is lagging or unresponsive, the culprit is often a worn-out control knob unit. Our premium 21N6-20500 (also searched as 21N620500) and 21N6-20501 (or 21N620501) control assembly knobs provide a direct-fit solution for the 7-series Hyundai machines. Designed for precision and durability, these components ensure your engine speed regulation remains smooth and reliable under heavy workloads.
We specialize in providing high-performance alternatives that meet or exceed original equipment standards. Whether you are performing a routine maintenance check or a complete engine overhaul, having a functional throttle knob is essential for fuel efficiency and operator safety. Our stock includes both brand new aftermarket and OEM standard replacements to suit your budget and technical requirements.
| Attribute | Details for Part No. 21N6-20500 / 21N6-20501 |
|---|---|
| Model Compatibility | Hyundai R210LC-7, R215LC-7, R220LC-7, R225LC-7, R300LC-7 |
| Product Name | Control Assembly Knob / Throttle Knob Unit |
| Part Number | 21N6-20500, 21N620500, 21N6-20501, 21N620501 |
| Condition | Brand New, OEM Standard Replacement |
| Application | Electrical System, Engine Speed Control, Interior Cabin Maintenance |
| Stock Status | In Stock / Fast Dispatch within 24 Hours |
| Payment Methods | T/T, Western Union, MoneyGram |
| Logistics | DHL, Fedex, EMS, UPS, Air or Sea Freight |
Below is a direct comparison of our replacement parts versus standard market options, highlighting the six core procurement points every buyer should consider.
| Key Buying Points | Our 21N6-20500 Series Replacement | Standard Aftermarket Options |
|---|---|---|
| 1. Component Material | Industrial-grade ABS & copper contacts | Thin plastics, prone to cracking |
| 2. Fitment Precision | 1:1 Exact Match for Hyundai Dashboard | Loose fit, requires modification |
| 3. Response Time | Zero-lag signal transmission | Intermittent signal loss |
| 4. Durability | High dust and vibration resistance | Short lifespan in harsh environments |
| 5. Quality Assurance | 100% Bench tested before shipping | Batch tested or untested |
| 6. Availability | Immediate dispatch from global warehouse | Long lead times or drop-shipped |
Contact our technical support team today for bulk pricing and shipping estimates.
WhatsApp: +86 135 3237 9052 Email: [email protected]Question: My Hyundai excavator engine speed doesn't change when I turn the knob. Is the 21N6-20500 the problem?
Answer: Most likely. The internal potentiometer in the 21N6-20500 can wear out or corrode. If your harness is intact and the motor is functional, replacing the knob unit usually restores full control. Our OEM-standard tri-metal structure ensures long-term conductivity and is trusted by repair shops and equipment fleets worldwide.
Question: What is the difference between 21N6-20500 and 21N6-20501?
Answer: These are interchangeable part numbers used by Hyundai across different production years of the 7-series (R210LC-7, R225LC-7). Both offer identical fitment and signal output for the throttle controller.
Question: Not sure how this issue affects your equipment?
Our team helps operators:
Identify potential risks during maintenance
Recommend suitable replacement parts if needed
Support both inspection advice and parts supply
As a leading supplier in the heavy machinery industry, we provide more than just control knobs. We specialize in comprehensive engine solutions for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our core inventory includes high-precision Engine Rebuild Kits, Cylinder Liners, Pistons, Piston Rings, and critical internal components like Crankshafts, Main Bearings, Con-rod Bearings, and Thrust Washers. For top-end performance, we supply Cylinder Heads, Turbochargers, Water Pumps, and Oil Pumps. Fuel system reliability is ensured through our range of Fuel Injection Pumps and Injectors.
Please fill out the form below to receive a detailed quotation for 21N6-20500, 21N6-20501, or any other engine components you require.
<!--!doctype-->
Click the button below to visit our Facebook profile and stay updated with the latest news and updates!
Visit Facebook Profile
English
English