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Parts Directory 126 Chassis
Body
Interior
Air Conditioning & Heating
Brake System
Cooling System (engine)
Drive Line and Axels
Electrical, Switches and Cables
Engine (parts, seals, gaskets)
Exhaust, Vacuum and EGR
Fuel, Air and Turbo Systems
Ignition
Steering
Suspension
Transmission (automatic)
Wheel, Hub & Tire
Wiper & Washer
 


 

mercedes auto works
126 Standard Chassis 1981- 1991
Models
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC.
 
 

The worlds largest selection of new, used and reconditioned Mercedes-Benz 126 chassis air conditioning and heating parts. We have hoses, climate control units, compressors, vacuum valves, expansion valves, receiver/dryer units, temperature switches, HVAC valves, heater control regulators, mono valve repair kits, control valves, heater hoses vacuum change over valves, 3/2 valves. Whether you're restoring a classic or  keeping your daily driver running and looking its best we have the parts you need.

Air Conditioning and Heating
A/C Hoses HVAC Valves Heater Core
Climate Control Unit Heater Control Temp Regulator Heater pipe set
Compressor Heater control mono repair kit  
Climate control vacuum valve Heater control valve  
Expansion valve Heater Hoses   
Receiver/Dryer Mono valve  
Temp Switch Vacuum change over valve  
     

A/C Compressors
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Compressor (A)
 
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Compressor (B)
Air conditioning compressor
A 300SD, 1981-1985
B 380SE,500SEC, 560SEC
 
Must be installed as per manufacturers specs and proper procedure to maintain warranty. Take the vehicle to a certified shop and have the air conditioning system depressurized. Specify year and model when ordering. 3 mo warranty.
Qty. required 1
W126 A/C Compressor
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A/C Receiver/Dryer
 
 
 
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Receiver/Dryer (81-91)
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC.
A Behr
B URO
Whenever you do any major work to your AC (compressor, hoses etc.) replace the dryer. Includes seals (not shown)
Qty. required 1. new only.
 
W126 A/C Receiver / Drier
 
 
Temperature Switch
(A)
 
 
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(B)
Temperature switch (81-91)
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC.
A 9.5mm thread (red)
B 6mm thread - 2 wire (53 deg Celsius, early version)
 
Qty. required 1
W126 A/C Temp Switch
 
   
Temperature switch 300SD
 
C Green 10mm thread - has lower temp rating. 2 wire: w/ 10mm threads.
Recommended upgrade when using 134A
Qty. required 1
W126 A/C Temp Switch
 
A/C Expansion Valve
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1268350640 Genuine Mercedes AC Expansion Valve; Protective Housing for Expansion Valve
 
A/C Expansion Valve. (81-91)
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC.
A Expansion valve - for R12 and R-134A
B Mount/Pad for expansion valve
Qty. required 1
W126 A/C Expansion Valve
 
 
A/C Climate Control Unit
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A/C, Heat Climate Control Unit.
300SD, SEC, 380SE, 380SEC,420SE, 500SEC, 560SEC. (81-85)
A Climate control unit (Remanufactured)
Remanufactured 3 month warranty.
Price includes 75.00 refundable core charge.
Qty. required 1
W126 A/C Climate Control Unit

 
  mercedes auto works
Remanufactured 3 month warranty. Includes $50.00 core charge.
Qty. required 1
 
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Heater Control Temp Regulator
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Heater Control Unit Temperature Regulator.
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC.
A Temp regulator. Includes 40.00 core charge - OUT OF STOCK
 
Temperature regulator for climate control unit.
Qty. required 1
W126 Heater Temp Regulator
 
HVAC Valves
 
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Climate Control vacuum power change over valve.
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC. (81-85)
A  Valve - Qty. required 5.
(HVAC controls under dash behind climate control unit, operates dampers)
Qty. required 5.
W126 HVAC Valves
 
  mercedes auto works
Climate Control Vacuum Valve.
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC. (78-85)
B 2/1 way, yellow (in engine compartment)
Qty, required 1
W126 HVAC Valves
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Heater control  mono valve repair kit.
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC. (81-85).
For mono electromagnetic water valve.
Qty. required 1
New      $  50.12
List         129.00
 
 
123/126 mono repair kit 81-85
 
 
  mercedes auto works
Heater control valve.  
A 240D, 300D,TD,CD. 1981 thru 1985.
 
 
 
123/126 Control valve 81-85
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Heater control valve solenoid. Mono Valve
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SEC. (81-85).
A Heater Control Valve - Mono Valve, Genuine Mercedes
B Heater Control Valve - Mono Valve, MW Reman
 
 
W126 Heater Control Mono Valve
 
A/C Hoses
(A)
 
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Receiver/dryer to condenser. (B)
A/C Hoses
380SE, 380SEC,420SE, 500SEC, 560SEC. (81-85)
A Suction line at compressor
B Receiver/dryer to condenser
 
W126 A/C Hoses
   
 
 
mercedes auto works
federal cars for A/C comp with flange connection under engine. (C)
A/C Hoses
300SD  (81-85)

C At A/C comp with flange connection

 
W126 A/C Hoses
 
Heater Core
Heater core (A)
 
Heater pipe (B)
A/C Hoses - 300SD. 1981 thru1985
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SE,SEC. (81-85)
A Heater Core
B Heater Pipe Set
Pipe set should be replaced with heater core in most cases due to corrosion and access difficulty.  1 set per car.
W126 Heater Core

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Heater Hoses 126 Chassis
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Mono valve to feed pipe at fire wall (A)
 
 
 
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Mono valve to return pipe from aux water
 pump (B)
Heater hoses
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SE,SEC. (81-85)
A Heater hose - Heater core to water valve Left side
B Heater hose - Heater core to water valve Right side
 
Match your pipe shape to pictures shown.
W126 Heater Hoses

 

 
 
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Mono valve to feed pipe at fire wall (C)
 
 
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Mono valve to return pipe from aux water
 pump (D)
Heater hoses
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SE,SEC. (81-85)
C Heater hose - mono valve to feed pipe at fire wall.
D Heater hose - mono valve to return pipe from aux water pump.
 
Match your pipe shape to pictures shown.
W126 Heater Hoses
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Mono valve to feed pipe at fire wall (E)
 
 
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Mono valve to return pipe from aux water
 pump (F)
Heater hoses
300SD,SE, 380SE, 380SEC,420SE, 500SEC, 560SE,SEC. (81-85)
E Heater hose - mono valve to feed pipe at fire wall.
F Heater hose - mono valve to return pipe from aux water pump.
 
Match your pipe shape to pictures shown.
 
W126 Heater Hoses
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