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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.

297830460364 - : Refrigerant Line for Mercedes-Benz Image

Refrigerant Line

Mercedes-Benz 297-830-46-03-64
Condenser to compressor.
$207.48
MSRP $304.00
Save $96.52
31.8% Off
9959100 - : Line Fastener for Mercedes-Benz Image

Line Fastener

Mercedes-Benz 000-995-91-00
Heating water return an stirnwand. Hose line mount. Bracket, coolant pipe/coolant hose, heater circuit. Coolant line mount. To line.
$2.13
MSRP $2.90
Save $0.77
26.6% Off
10997138164 - : Grommet for Mercedes-Benz Image

Grommet

Mercedes-Benz 010-997-13-81-64
At liquid tank. At reservoir,top. Instead of pump. Heater. Heated screen wash system. Cover to heat exchanger. Windshield washer heated....
$3.39
MSRP $4.60
Save $1.21
26.3% Off
294830310064 - : Hose Line for Mercedes-Benz Image

Hose Line

Mercedes-Benz 294-830-31-00-64
Heater to heat exchanger.
$46.80
MSRP $65.00
Save $18.20
28% Off
6389972590 - : Binder for Mercedes-Benz Image

Binder

Mercedes-Benz 638-997-25-90
Hose fastening. 22,5/9mm. Air filter mount. 22,5/9MM. Fuel hose mount. 22,5/9MM. Air filter to stationary heater. 22,5/9MM. Hose to...
$2.98
MSRP $4.10
Save $1.12
27.3% Off
29955377 - : Line Bracket for Mercedes-Benz Image

Line Bracket

Mercedes-Benz 002-995-53-77
Brake line to front axle Diameter: 5mm Inside diameter: 3,2mm Outside diameter: 5,2mm. Brake line to frame Diameter: 5mm Inside diameter:...
$3.44
MSRP $4.70
Save $1.26
26.8% Off
795364 - : Hexagon Head Bolt for Mercedes-Benz Image

Hexagon Head Bolt

Mercedes-Benz 000000-007953-64
M8X25 Diameter: 8mm Strength / hardness class: 10.9 Thread code letter: M Thread pitch: 1mm. Bracket to body. Exhaust suspension to rear...
$2.62
MSRP $3.60
Save $0.98
27.2% Off
285452726 - : Coupling Housing for Mercedes-Benz Image

Coupling Housing

Mercedes-Benz 028-545-27-26
Coolant level indicator switch S41. 4-PIN MLK1.2. BAS brake booster A7/7. 4-PIN MLK1.2. Connector washer nozzle heater hose r2/11. 4-pin...
$7.01
MSRP $9.50
Save $2.49
26.2% Off
9955010 - : Hose Clamp for Mercedes-Benz Image

Hose Clamp

Mercedes-Benz 000-995-50-10
HOSE AT LINE Diameter: 8mm Inside diameter: 8,5mm Outside diameter: 9,5mm Material thickness: 0,6mm. Sep. POINT D-PILLAR TO REAR PANEL...
$4.43
MSRP $6.00
Save $1.57
26.2% Off
1119903640 - : Window for Mercedes-Benz Image

Window

Mercedes-Benz 111-990-36-40
HEATER CASE TO FIRE WALL Diameter: 6mm Inside diameter: 6,4mm Outside diameter: 22mm Material thickness: 1mm. TAIL LAMP TO REAR BODY...
$7.87
MSRP $11.00
Save $3.13
28.5% Off
5405715 - : Core Bundle Sealing for Mercedes-Benz Image

Core Bundle Sealing

Mercedes-Benz 000-540-57-15
Left/right power window motor m40/5. M40/6. 1.0-2.5 MM JPT/MCP2.8/HDK2.8 Leitungsquerschnitt Min/Max: 2,2-3,0mm2 Model 1: MCP Model 2:...
$1.76
MSRP $2.40
Save $0.64
26.7% Off
345456528 - : Crimp Tml Pin Contact for Mercedes-Benz Image

Crimp Tml Pin Contact

Mercedes-Benz 034-545-65-28
Washer nozzle heater. 0.5-0.75 MM2 MQS Leitungsquerschnitt Min/Max: 0,5-0,75mm2 Oberflächenschutz PINs: Sn ELA: + Model 1: MQS Release...
$2.36
MSRP $3.20
Save $0.84
26.3% Off

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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.