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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
49973090 - : Clamp for Mercedes-Benz Image

Clamp

Mercedes-Benz 004-997-30-90
Fastening, fuel hose to plastic line. 8 mm. Between fuel line and heater unit. 8 mm. Feed and return lines, breathing. 8 mm. Fuel line...
$4.27
MSRP $6.00
Save $1.73
28.8% Off
1235400450 - : Fuse Box for Mercedes-Benz Image

Fuse Box

Mercedes-Benz 123-540-04-50
Heater blower. Windshield heated. In battery hollow. Pre-glow system 50 a. Single. Auxiliary fan. Heated rear window pane.
$4.23
MSRP $5.75
Save $1.52
26.4% Off
1075450072 - : Nut for Mercedes-Benz Image

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
9906836 - : Screw for Mercedes-Benz Image

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
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
1269900451 - : Nut for Mercedes-Benz Image

Nut

Mercedes-Benz 126-990-04-51
Hinge lever to cowl. Heater case to fire wall. Stop to interior part. Engine hood hinge to rear wheelhouse. Bumper on fender. Roller...
$10.21
MSRP $14.00
Save $3.79
27.1% Off
9952420 - : Clamp for Mercedes-Benz Image

Clamp

Mercedes-Benz 000-995-24-20
Wire cable to heater case. Operating unit wire cable to legroom lever. At nozzle in the rear. Central air duct. Wire cable to blower....
$0.86
MSRP $1.20
Save $0.34
28.3% Off
542 - : Tapping Screw for Mercedes-Benz Image

Tapping Screw

Mercedes-Benz 000000-000542
Bracket to heater case. N 14128 6,3X16-R Diameter: 6,3mm Thread code letter: R. Attachment cover left. Bracket with recirculating pump to...
$1.35
MSRP $1.90
Save $0.55
28.9% Off
949903201 - : Window for Mercedes-Benz Image

Window

Mercedes-Benz 094-990-32-01
Lateral guide to rear end floor. Bumper to cross member. Cable connector to foot operated parking brake. Bracket to heater case. Mud...
$4.10
MSRP $5.75
Save $1.65
28.7% Off
933006123 - : Screw for Mercedes-Benz Image

Screw

Mercedes-Benz 000933-006123
SWITCH ON BLOWER CASE Diameter: 6mm Strength / hardness class: 8.8 Thread code letter: M Thread pitch: 1mm. CONDENSER TO RADIATOR...
$5.54
MSRP $7.50
Save $1.96
26.1% Off
674 - : Clamp for Mercedes-Benz Image

Clamp

Mercedes-Benz 000000-000674
BRACKET TO HEATER UNIT Diameter: 70-90mm Material thickness: 1mm Width across flats: SW8. COLD-AIR SCOOP TO FENDER, RIGHT Diameter:...
$14.15
MSRP $19.50
Save $5.35
27.4% 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.