# Horizon Fitness DT650 Treadmill Rear Idler Roller (RP519)

\## Horizon Fitness DT650 Treadmill Rear Idler Roller (RP519)

The Horizon Fitness DT650 Treadmill Rear Idler Roller is a replacement treadmill roller for the rear section of a Horizon Fitness DT650 treadmill. It supports the rear portion of the walking belt and helps the belt travel around the back of the treadmill during use. If the original rear idler roller is worn, damaged, or no longer suitable for continued service, this preowned replacement part may help restore the treadmill’s belt-support system.

This product is identified as \*\*RP519\*\* and carries the part number \*\*1000469352\*\*. It belongs to the treadmill roller category and is supplied as a single replacement component. The roller is intended for repair and maintenance work on the specified Horizon Fitness treadmill model.

## Product Details and Benefits

The rear idler roller plays an important role in the treadmill’s walking-belt assembly. It sits at the back of the deck and works with the belt and other treadmill components as the belt moves during operation. Replacing a faulty roller can help address repair needs related to the rear belt-support area.

This is a \*\*preowned Horizon Fitness replacement part\*\*. Its condition makes it especially important to review the product images and confirm that the component matches the part you are removing from your treadmill. A preowned part may show signs of previous use, so buyers should check the visible condition before ordering.

The product information does not list dimensions, construction material, color, bearings, or installation hardware. No additional specifications should be assumed beyond the identification and compatibility details provided.

## Compatibility and Applications

The Horizon Fitness DT650 Treadmill Rear Idler Roller is intended for the \*\*Horizon Fitness DT650 treadmill\*\*. It is a replacement rear idler roller, not a complete treadmill belt assembly, motor, front roller, or rear roller support system.

Use this part when servicing the rear roller area of a Horizon Fitness DT650 treadmill. It may suit a repair project where the existing rear idler roller requires replacement, but buyers should compare the original part and confirm the treadmill model before purchase.

The listed serial number reference is \*\*TM165-1US5061855\*\*. This information may help with identification, but customers should still verify their treadmill’s model and existing part before placing an order.

\## Why Choose This Replacement Part?

Choosing the correct rear idler roller helps keep a treadmill repair focused on the component that needs attention. This Horizon Fitness part is clearly identified by its model application, product name, SKU, and part number, making it easier to compare with an existing roller or repair requirement.

A replacement roller can also help support the continued use of an existing DT650 treadmill instead of replacing the entire machine. Because this item is preowned, it may provide a practical option for customers sourcing a specific replacement component for an older treadmill.

## Before You Buy

Confirm all of the following before ordering:

\- \*\*Brand:\*\* Horizon Fitness  
\- \*\*Compatible model:\*\* DT650 treadmill  
\- \*\*Product:\*\* Rear idler roller  
\- \*\*Part number:\*\* 1000469352  
\- \*\*SKU and barcode:\*\* RP519  
\- \*\*Condition:\*\* Preowned  
\- \*\*Quantity:\*\* One replacement roller, based on the listed product

Compare the part number, roller shape, and existing treadmill component with the listing. Verify compatibility carefully, since treadmill rollers can vary between models and production versions.

## Details

- **Price:** 89.99 USD
- **Vendor:** Horizon Fitness
- **Type:** Treadmill Rollers
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 89.99 USD | In stock |

## Images

- RP519
- RP519
- RP519
- RP519
- RP519
- RP519

## Additional Information

- **PartNumber:** 1000469352
- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/horizon-fitness-dt650-treadmill-rear-idler-roller-rp519)
> Updated: 2026-08-29