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.
Switch
Mercedes-Benz
171-540-30-45
Steering column adjustment & steering wheel heater. Steering column tube adjustment with heated steering wheel. Jacket tube adjust. On...
$100.80
MSRP $140.00
Save $39.20
28% Off 
Holder
Mercedes-Benz
223-545-98-01
Holder, wiring harness, DC/DC converter, high voltage - refrigerant compressor, electric, PTC booster heater, high voltage, belt-driven...
$79.20
MSRP $110.00
Save $30.80
28% Off 
Coupling, Mechanical
Mercedes-Benz
000-821-26-26
Compressor switch. Electric window regulator switch. Lower part. Seat heater switch. 6-pole. Circulating air switch. 4-pole. Level...
$3.57
MSRP $4.90
Save $1.33
27.1% Off 
Tapping Screw
Mercedes-Benz
007982-004245
Front fender & front central panelling to radiator support console. Seat heater control to front floor bracing. Panelling to rear...
$1.72
MSRP $2.40
Save $0.68
28.3% Off 
Screw
Mercedes-Benz
000-990-68-36
Front fender to wheelhouse. Front fender to front panel pillar. Bracket to heater case. Partition panel to side member and to front...
$2.34
MSRP $3.20
Save $0.86
26.9% Off 
Protective Hose
Mercedes-Benz
126-821-04-97
Left rear speaker connector to a 022 545 00 28. At condenser. To 033 545 67 28. Plug connection. To 012 545 86 28.
$0.74
MSRP $1.00
Save $0.26
26% Off 
Plug Holder
Mercedes-Benz
000-995-03-83
For sheet thickness 1 to 3 mm. Safety belt,top. To footwell cover. Plug to cable duct. Connector unit. Line attachment. Seat...
$2.46
MSRP $3.40
Save $0.94
27.6% Off 
Bolt And Washer Assembly
Mercedes-Benz
000000-003964
Holder mount. M6X17 Diameter: 6mm Strength / hardness class: 8.8 Thread code letter: M Thread pitch: 1mm. Attachment for heater. Left...
$4.06
MSRP $5.50
Save $1.44
26.2% Off 
Nut
Mercedes-Benz
107-545-00-72
Light switch to instrument panel. Light rotary switch. Operating unit. Central covering to heater case. Air-conditioner...
$2.74
MSRP $3.80
Save $1.06
27.9% Off 
Spacer
Mercedes-Benz
000-995-66-65
Bowden cable to heating feed hose. Compressor-to-condenser refrigerant line to side member. Oil pressure gauge line to speedometer drive...
$5.29
MSRP $7.25
Save $1.96
27% Off 
Control Unit
Mercedes-Benz
222-900-82-21
Rear seat heaters. Right seat. Rear seat, left. Armrest heating. Rear seat heating. Left driver's seat. Seat heater for rear seat bench....
$116.00
MSRP $170.00
Save $54.00
31.8% Off 
Fastening Clamp
Mercedes-Benz
123-995-03-20
Bracket to wheel arch panel. Compressor-to-condenser refrigerant line to side member. Main cable harness to left cross member at...
$12.30
MSRP $17.00
Save $4.70
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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.