Introduction
At AU 4×4 Solution, we know that small parts can make a big difference. That’s why our genuine 05011218AC heater and A/C control knob is key to maintaining your vehicle’s comfort and control. Over time, the original knob can become loose or brittle—impacting your ability to adjust fan speed. Installing the 05011218AC control knob restores crisp, reliable operation and keeps your cabin functional—ideal for any drive, from daily commuting to rugged trails.
What Is 05011218AC?
The 05011218AC is a genuine Mopar rotary control knob designed for heater and air conditioning systems in select Dodge, Jeep, Ram, and Chrysler vehicles. It features a durable plastic construction with built-in metal keyways for reliable use. Superseding previous part numbers like 05011218AB, 05011218AA, and cross‑references such as 5011218AC, it ensures OEM fit and finish
Why replace it?
Over time, the internal plastic can fracture, making it hard to turn or causing it to spin freely. The 05011218AC restores full control of fan and temperature settings while maintaining a factory appearance .
Vehicle Fitment
The 05011218AC fits rotary-style HVAC systems in:
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Jeep Wrangler TJ (1998–2006)
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Dodge Ram Van/1500/2500/3500 (1998–2003)
Be sure to verify part compatibility using your VIN, especially if your vehicle uses slider-style controls instead of knobs
Key Features
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OEM Mopar quality – genuine part no. 05011218AC
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Direct fit for affected Jeep, Dodge, Ram models
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Durable plastic with metal insert – resists cracking
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Restores original rotary feel for HVAC controls
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Simple installation – pull off old knob, push on new
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Replaces superseded PNs: 05011218AB, 05011218AA, 5011218AC
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Backlit compatibility – allows dashboard illumination
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Durable finish – won’t fade or wear easily
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Affordable and practical fix – avoids rebuilding entire control unit
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Installation Guide (7th–8th Grade Readability)
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Turn off ignition and ensure HVAC is off.
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Pull old knob straight off the shaft. A firm tug may be all it takes.
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Align the knob’s keyway with the HVAC shaft.
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Push the 05011218AC knob firmly onto the shaft until seated.
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Test operation—should rotate smoothly and control settings accurately.
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Repeat for other knobs as necessary (fan, temperature, mode).
Installation takes under 5 minutes—no tools required!
Frequently Asked Questions
1. What is 05011218AC?
It’s a genuine Mopar rotary knob for HVAC systems in select Jeep and Dodge models. It restores reliable control of fan speed, temperature, and airflow settings
2. Which vehicles use 05011218AC?
This knob fits gas and diesel Jeep Wrangler TJ (1998–2006) and Dodge Ram Vans and trucks (1998–2003) with rotary HVAC controls .
3. Why does my old knob fail?
The plastic or internal keyway can wear or crack, causing it to spin freely or feel loose.
4. Can I install it myself?
Yes! Simply pull the old knob off and slide on the 05011218AC replacement. No tools or programming needed.
5. Is it OEM or aftermarket?
This is a genuine Mopar OEM part, with factory-level build quality and guaranteed fit .
Why Choose This Over Aftermarket?
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Perfect match to factory knobs—color, feel, and illumination
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Reliable quality compared to generic replicas
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Long-term warranty from Mopar
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Fast, easy fit without risk of mismatch
Conclusion
The 05011218AC HVAC control knob is a small part with big impact. Restore smooth, reliable control of your heater and A/C with genuine Mopar quality matched for your vehicle. At AU 4×4 Solution, we ensure a fast fit, long-lasting durability, and piece-of-mind for your cabin comfort. Don’t let a broken knob hold you back—order your 05011218AC today and enjoy crisp, factory-functioning HVAC controls again.
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