Masterbuilt 9004210001 Gravity Series Hopper Door and Latch

What Problem This Part Solves

A worn, broken, or poorly sealing hopper door can allow moisture, debris, and pests into your pellet hopper, leading to pellet swelling, feed issues, and inconsistent smoker performance. This replacement restores proper hopper access, protection, and consistent fuel delivery for reliable cooking.

Key Features 

• Complete hopper door and latch assembly for Masterbuilt Gravity Series smokers

• Designed for secure closing and controlled pellet access

• Durable construction built for outdoor use

• Helps protect pellets from moisture and debris

• Easy replacement for worn or damaged hopper doors

Compatibility / Fits Models

Fits Masterbuilt Gravity Series pellet smokers
Fits most Gravity Series models—confirm specific model number before ordering.

Fits Models
MB20040122, MB20040220, MB20040221, MB20041020, MB20041220, MB20041320, MB20042221

Installation / Use Instructions (1–3 steps)

1. Remove Old Door: Open hopper and remove the existing door and latch assembly.

2. Align Replacement: Position the 9004210001 door and latch assembly in place of the old components.

3. Secure Hardware: Fasten with original screws or mounting hardware until snug and functional.

Why Buy From Bar-B-Que.com

• Trusted grill experts since 1974

• Genuine replacement parts and premium accessories

• Fast nationwide shipping

• Family-owned with real product support

FAQ Section (5 questions & answers)

1. Does this fit my grill?
Yes — this hopper door and latch assembly fits Masterbuilt Gravity Series pellet smokers. Confirm your exact model before ordering to ensure proper compatibility.

2. What is this part made of?
It is constructed from durable, weather-resistant materials suited for outdoor use and pellet hopper protection.

3. How long should this part last?
With proper installation and normal use, this replacement assembly should last multiple seasons.

4. How do I install it?
Remove the old door and latch, align the new assembly, and secure with original mounting hardware.

5. Why choose this replacement part over others?
This is a genuine Masterbuilt replacement part engineered for compatible Gravity Series models to ensure proper fit, sealing, and pellet protection compared to generic alternatives.