Buy OEM Mercedes-Benz A/C and Heating Parts
The heater in your Mercedes-Benz not warming things up? Maybe the air conditioner isn't blowing cold? Most likely, one or another part needs replacing -- something you should do sooner rather than later, to keep spiraling repair costs down. Good thing you came to us here at MB Part Source; we stock replacement heating and AC parts for all Mercedes-Benz models, at competitive prices. Order today, and we'll ship fast, anywhere nationwide; you'll have repairs done in no time. Contact us with any questions.
Wiring Harness
Mercedes-Benz
211-540-82-33
Steering wheel heater. Rear seat bench heating.
$39.00
MSRP $55.00
Save $16.00
29.1% Off 
Padding
Mercedes-Benz
129-910-29-50
Seat heater and automatic child seat recognition.
$527.82
MSRP $775.00
Save $247.18
31.9% Off 
Air Duct
Mercedes-Benz
126-830-56-44
Betwen heater case and right front door.
$5.15
MSRP $8.50
Save $3.35
39.4% Off 
Fuel Line
Mercedes-Benz
000-471-01-00-65
Connecting pipe in fuel tank, stationary heater.
$14.15
MSRP $19.50
Save $5.35
27.4% Off 
Receptacle Housing
Mercedes-Benz
021-545-60-26
Heater booster control module n33/2. 2-pin jpt. Additional heater control unit. 2-pin jpt. Control unit independent heating. 2-pin jpt....
$2.95
MSRP $4.00
Save $1.05
26.3% Off 
Cap Screw
Mercedes-Benz
010-990-50-04-64
M8X30 Diameter: 8mm Strength / hardness class: 8.8 Thread code letter: M Thread pitch: 1,25mm. A/C line mount. Ac lines at compressor....
$1.76
MSRP $2.40
Save $0.64
26.7% Off 
Switch
Mercedes-Benz
126-820-03-10
Rear seat heater,right. Front seat heating.
$50.40
MSRP $70.00
Save $19.60
28% Off 
Duct
Mercedes-Benz
140-831-06-46
Between heater case and right side nozzle.
$48.00
MSRP $67.00
Save $19.00
28.4% Off Duct
Mercedes-Benz
140-831-25-46
Between heater case and left side nozzle.
$35.67
MSRP $48.50
Save $12.83
26.5% Off 
Distributor
Mercedes-Benz
123-821-05-14
At heater operating unit bracket. Light guide.
$2.46
MSRP $3.40
Save $0.94
27.6% Off Duct
Mercedes-Benz
126-831-30-46
Betwen heater case & hot air nozzle, right.
$12.61
MSRP $20.50
Save $7.89
38.5% Off 
Cap
Mercedes-Benz
140-730-02-48
Switch for power windows and seat heater.
$259.92
MSRP $380.00
Save $120.08
31.6% Off No results found for "ac, air conditioning, heater, climate control, condenser". Here are some helpful search tips:
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Mercedes-Benz AC and Heating FAQ
Why is the HVAC in My Mercedes-Benz Not Working Right?
Most likely, because of low or leaking coolant, a failed heater core, a defective AC compressor, or a bad AC condenser. You'll know one from the other by some key symptoms.
How Can I Tell if My Coolant's Low or Leaking?
Start your engine, setting the air conditioner and fans to max/high and listening for the compressor clutch to click. If the system runs too fast, the coolant's probably low. If your Mercedes-Benz isn't due for air conditioning service anytime soon, a leak's likely.
What are the Signs of Heater Core Failure?
The heater not blowing warm, the interior being steamy or smoky, the smell of coolant in the car, and the engine overheating. The core's hoses are the likely problem; they're probably leaking. If you need help with this or any other repairs, get in touch with a Mercedes-Benz service center.
How Can I Diagnose an AC Compressor Defect?
Look, listen, and feel. If the air conditioning sounds funny, if the cabin's warmer than usual, and if the AC clutch is stuck, it's probable. You'll know a bad clutch from connecting a voltmeter and getting no reading. Other causes of compressor trouble include low refrigerant pressure, a faulty cycling switch, and a blown fuse.
How Can I Tell if the AC Condenser in My Mercedes-Benz is Bad?
You'll know it from the HVAC warning light being lit, from frost starting to build up, from the AC button flashing, from the system having discharge pressure issues, and from the vents not blowing cold. If no air's coming through them at all, though, the blower motor's probably gone out. Other reasons for condenser issues include a failed cooling fan and a clogged cabin air filter.