# Horizon Fitness 7.4AT-02 Treadmill Safety Air Latch Shock (MX644)

\## Horizon Fitness 7.4AT-02 Treadmill Safety Air Latch Shock

The Horizon Fitness 7.4AT-02 Treadmill Safety Air Latch Shock is a preowned replacement part for the Horizon Fitness 7.4AT-02 treadmill. It belongs to the treadmill’s safety air latch system and helps replace the original latch shock component when the existing part becomes worn, damaged, or unusable. If you are restoring a Horizon treadmill and need the correct safety latch shock, this part provides a model-specific replacement option.

## Product Details and Benefits

This product is identified as a \*\*Safety Air Latch Shock\*\* for the Horizon Fitness 7.4AT-02 treadmill. The component supports the treadmill’s safety latch mechanism, making it relevant for repair, maintenance, and replacement work on the compatible equipment.

The part is preowned and has been carefully inspected by skilled technicians to check its performance and safety before sale. Reusing a tested fitness-equipment component can help reduce repair costs compared with replacing a larger treadmill assembly. It also helps extend the useful life of existing equipment and keeps usable parts out of landfills.

The product listing identifies this part with the following information:

\- \*\*Brand:\*\* Horizon Fitness  
\- \*\*Product name:\*\* 7.4AT-02 Treadmill Safety Air Latch Shock  
\- \*\*Product type:\*\* Treadmill replacement part  
\- \*\*Part number:\*\* 1000457400  
\- \*\*SKU:\*\* MX644  
\- \*\*Barcode:\*\* MX644  
\- \*\*Condition:\*\* Preowned

The part number and SKU make it easier to compare this component with the part currently installed on your treadmill. Use these details when checking repair records, parts diagrams, or equipment documentation.

## Compatibility and Applications

The MX644 Safety Air Latch Shock is listed for the \*\*Horizon Fitness 7.4AT-02 treadmill\*\*. It is intended as a replacement for the corresponding safety air latch shock on that model. This part suits treadmill owners, repair technicians, fitness-equipment service providers, and anyone refurbishing a Horizon Fitness 7.4AT-02 machine.

Because treadmill parts can vary between model versions, do not rely only on appearance when selecting a replacement. Confirm that your treadmill model matches \*\*7.4AT-02\*\* and compare the existing component with \*\*part number 1000457400\*\* or \*\*SKU MX644\*\* before ordering.

## Why Choose This Product

A preowned Horizon Fitness treadmill safety air latch shock can provide a practical way to repair a compatible machine without replacing the entire treadmill or purchasing an unnecessary assembly. The part has undergone inspection before listing, giving you useful information about its condition. Selecting the correct replacement component can also help keep your treadmill’s original design and related parts in place.

The listing uses reference photographs. Since the seller carries multiple units, the part you receive may look slightly different from the pictured item. However, the seller states that it will be the same model and part.

## Before You Buy

Check your treadmill’s model number and compare the original safety air latch shock with the details above. This listing does not provide dimensions, material specifications, installation instructions, or warranty information, so verify any additional requirements before purchase. For questions about the part or compatibility, contact the seller before ordering.

## Details

- **Price:** 59.99 USD
- **Vendor:** Horizon Fitness
- **Type:** Miscellaneous
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 59.99 USD | In stock |

## Images

- MX644
- MX644
- MX644
- MX644
- MX644

## Additional Information

- **PartNumber:** 1000457400
- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/horizon-fitness-7-4at-02-treadmill-safety-air-latch-shock-mx644)
> Updated: 2026-08-29