# Nautilus NTR500 500.2 Treadmill Lower Motor Control Board MEC1H-1E (BP643)

This Nautilus NTR500 500.2  
Treadmill Lower Motor Control Board, part number MEC1H-1E, is the essential component that brings your fitness equipment back to life. It serves as the vital communication hub between your console commands and the treadmill's powerful motor, precisely managing speed and incline functions. When this specific board fails, your treadmill may experience frustrating issues like failure to start, inconsistent speed, or unresponsive buttons. This pre-owned unit offers a reliable and cost-effective solution to restore your Nautilus treadmill’s full operational integrity.

We carefully source this pre-owned Nautilus motor control board from non-operational treadmills, ensuring it is a genuine OEM part designed for exact compatibility with your Nautilus NTR500 500.2 model. Each board undergoes a rigorous testing and inspection process in our workshop to verify its electrical performance and functional reliability before it is cleared for sale. This meticulous process guarantees you receive a component that meets high standards for performance, providing a trustworthy repair option that gets your machine running smoothly again.

By choosing this pre-owned control board, you are making a smart and sustainable choice. You extend the life of your valuable home gym equipment, avoiding the high cost of a brand-new part or a full machine replacement. This approach is both economically and environmentally conscious, reducing electronic waste. Installing this board returns the heart of your treadmill’s drive system to its intended state, ensuring every workout from a brisk walk to an intense run is once again supported by consistent, dependable power and precise control. Enjoy the confidence that comes with a fully functional treadmill, ready to support your fitness journey for years to come.

## Details

- **Price:** 236.99 USD
- **Vendor:** Nautilus
- **Type:** Lower Control Boards
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 236.99 USD | In stock |

## Images

- BP643
- BP643
- BP643
- BP643
- BP643

## Additional Information

- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/nautilus-ntr500-500-2-treadmill-lower-motor-control-board-mec1h-1e-bp643)
> Updated: 2026-08-21