# Horizon Treadmill 5.1T Tension Wheel Set 016606-ZD (MX513)

\## Horizon Fitness Treadmill 5.1T Tension Wheel Set

The Horizon Fitness Treadmill 5.1T Tension Wheel Set 016606-ZD is a preowned replacement part for the Horizon 5.1T treadmill. It replaces the tension wheel set identified by part number 016606-ZD and helps you restore the correct component in your treadmill’s tension-wheel assembly. If your treadmill needs this specific part, the model and part number provide the key details to check before ordering.

## Product Details and Benefits

This treadmill tension wheel set carries the Horizon Fitness brand and has the following product identifiers:

\- \*\*Product name:\*\* Horizon Treadmill 5.1T Tension Wheel Set  
\- \*\*Part number:\*\* 016606-ZD  
\- \*\*SKU:\*\* MX513  
\- \*\*Barcode:\*\* MX513  
\- \*\*Condition:\*\* Preowned  
\- \*\*Equipment type:\*\* Treadmill replacement part

The part comes from used fitness equipment and offers a practical option when you need to replace an original treadmill component. Reusing a serviceable part can help extend the life of existing equipment while reducing unnecessary waste. It may also provide a more cost-conscious alternative to replacing the entire treadmill or sourcing a new component.

Each part receives inspection by skilled technicians before shipment. This inspection helps confirm the part’s condition and supports safe, reliable use when installed in the correct treadmill. Because this is a preowned component, it may show signs of previous use. Its appearance may also vary slightly from the product images.

## Compatibility and Applications

The Horizon 5.1T tension wheel set is intended for the \*\*Horizon Fitness 5.1T treadmill\*\*. It is a replacement tension wheel set, not a universal treadmill part. Confirm that your equipment matches the Horizon 5.1T model and that the original component uses part number \*\*016606-ZD\*\* before placing your order.

This part may suit treadmill owners, repair technicians, and fitness-equipment service providers who need to replace a worn, damaged, or missing tension wheel set. Use it only when the model and part-number information match your treadmill’s existing component.

\## Why Choose This Replacement Part

Choosing the correct replacement part can help you repair a Horizon 5.1T treadmill without replacing the complete machine. This preowned Horizon Fitness component has been checked by technicians and supports the continued use of compatible fitness equipment. Its clearly listed part number and SKU also make it easier to compare the item with your current tension wheel set or repair documentation.

## Before You Buy

Check these details carefully before ordering:

1\. Your treadmill must be a \*\*Horizon Fitness 5.1T\*\* model.  
2\. Your existing part or service information should reference \*\*016606-ZD\*\*.  
3\. The product SKU is \*\*MX513\*\*, which can help with order and inventory identification.  
4\. The item is \*\*preowned\*\*, so minor cosmetic differences may appear.  
5\. Product photographs serve as a reference. Stock may vary in appearance, but the supplied item will be the exact model and part itself listed for this product.

If you need additional information about this Horizon treadmill replacement part, contact the seller before purchase.

## Details

- **Price:** 22.99 USD
- **Vendor:** Horizon Fitness
- **Type:** Miscellaneous
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 22.99 USD | In stock |

## Images

- MX513
- MX513
- MX513
- MX513
- MX513

## Additional Information

- **PartNumber:** 016606-ZD
- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/horizon-treadmill-5-1t-tension-wheel-set-016606-zd-mx513)
> Updated: 2026-08-29