Masterbuilt 9904200048 Gravity 800 Heat Manifold Support Kit

What Problem This Part Solves

A sagging, loose, or worn manifold support can disrupt heat airflow and temperature consistency, leading to uneven cooking or hot spots. This support kit restores proper manifold alignment and structural integrity, improving thermal efficiency and consistent grill performance.

Key Features 

• Heat manifold support kit for Gravity 800 smokers

• Stabilizes internal manifold positioning and airflow

• Durable metal components built for outdoor conditions

• Enhances consistent temperature and heat distribution

• OEM design for precise fit

Compatibility / Fits Models

Fits Masterbuilt Gravity 800 pellet smokers
Fits most Gravity 800 configurations—confirm your model before ordering.

Fits Models
MB20040122, MB20040221

Installation / Use Instructions (1–3 steps)

1. Power Off & Cool: Ensure the smoker is unplugged and completely cool before working inside.

2. Remove Access Panels: Open the smoker’s access panel to reach the heat manifold area.

3. Install Support Kit: Position and secure the support brackets or components using the original mounting points and hardware.

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FAQ Section (5 questions & answers)

1. Does this fit my grill?
Yes — this heat manifold support kit is designed for Masterbuilt Gravity 800 pellet smokers. Please confirm your model before ordering.

2. What is this part made of?
It’s constructed from robust metal components built to withstand heat, vibration, and outdoor conditions.

3. How long should this part last?
With normal use and proper installation, the support kit should last many grilling seasons.

4. How do I install this part?
Turn off power and cool the smoker, remove access panels, and secure the support components to the manifold using original mounting hardware.

5. Why choose this replacement part over others?
This is a genuine Masterbuilt part engineered to the original specifications of Gravity 800 smokers, ensuring proper fit, airflow integrity, and long-term durability compared to generic alternatives.