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The knob no longer grips the D-shaped valve stem securely, spinning freely or wiggling side-to-side, making it impossible to set the desired flame level.
Physical damage to the knob — cracks, chips, or missing indicator markings — caused by impact, heat stress, or normal wear over time.
The knob slips back toward the OFF position after being set, preventing consistent burner operation and making precision cooking impossible.
The knob is stiff, sticky, or has inconsistent detents, requiring excessive force to adjust burner heat levels — often caused by a worn or deformed inner socket.
💡 Pro Tip: When Should You Replace Your Burner Knob?
Your part is likely the culprit if you notice any of the following:
⚠️ Knob spins freely or feels loose and wobbly on the stem
⚠️ Visible cracks, chips, or broken indicator markings on the knob body
⚠️ Knob will not stay in the selected position (slips back to OFF)
⚠️ Difficulty turning the knob — stiff, sticky, or inconsistent detents
🔍 Diagnosis tip: Pull the suspect knob straight off the stem and inspect the D-shaped socket inside. If the flat edge is rounded out or the plastic is cracked, the knob is worn beyond use. The valve stem itself rarely fails — 95% of the time a new knob is all that's needed.
📦 What's in the Box
✅ 1× Black Surface Burner Control Knob (W10339442, 2.05" Ø × 1.54" H, D-shaft, ABS plastic)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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