Klima Design Works | W123 Sanden SD A/C Compressor Mounting Kit
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Compressor-Kit-Contents C
Compressor-Kit-Contents CBrackets & hardware on compressorReplaces Delco R4Comp-Plain-1024x787

W123 Sanden SD A/C Compressor Mounting Kit


For W123 diesel Mercedes originally fitted with Delco R4 compressors (1980-1983 240D; 1980-1985 300D, TD, & CD)


Tired of a/c compressor failure in your W123? The OEM General Motors Delco R4 compressors fitted to W123 North American market Mercedes have a well-earned reputation for poor performance and short life. Upgrade your system now and say goodbye to the loud, leaky, short-lived Delco R4. Our mounting & conversion kit provides you with all of the parts you need to install a durable, world-famous Sanden SD Series compressor in your car. With a Sanden SD compressor, you can reliably run both R-12 & R-134a.  Offered with ready to install hoses or uncrimped a/c fittings and hose. Note that you must purchase a compressor separately.


Please select your vehicle model & hose choice. Read full product description below. Kit is made to order; allow 7 days processing time.



Flat rate $15 shipping in USA. Shipping Fee added at checkout. International rate varies.

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SKU: KCKW123B Category:

We are the first and only company to offer a robust and elegant Sanden a/c compressor mounting kit for the W123. Brackets made in USA from the highest quality materials. 


Kit Contents:

  • Precision steel mounting brackets with yellow zinc (gold) finish
  • DIN/ISO metric hardware set with hardened fasteners
  • All required hose & line components to complete the conversion
  • Complete HNBR o-ring set for entire a/c system
  • Complete step-by-step illustrated instructions with torque specifications and data
  • OEM-compatible Delco male electrical connector and terminals included
  • New v-belt included. 


Vehicle Model Compatibility:


  •  For W123 diesel Mercedes originally fitted with Delco R4 compressors (1980-1983 240D; 1980-1985 300D, TD, & CD). Please visually verify that your vehicle has an R4 before purchasing. Click here for a picture of an R4 Compressor. 


Compressor Compatibility:



Hose & Line:


  • Kit includes new high side hose running from compressor head to condenser input. OEM high side lines (2 pieces) will be removed and replaced.
  • OEM/Original liquid lines (receiver drier to thermal expansion valve (TXV), and low side suction lines (TXV to compressor) will remain; make sure all remaining lines are in good condition before installing kit.
  • Available with either ready-to-install hose components, or with hose and uncrimped fittings (installer must crimp fittings with appropriate tool).
  • We use only Goodyear Galaxy full barrier hose for durability and multi-refrigerant compatibility. 
  • Kit uses only heavy-duty steel fittings, as used with OEM system. 


Additional information:


  • Use with either R-12 or R-134a.
  • Set up with R-12 charge ports by default; use standard adapter kit for use with R-134a.
  • No special tools to install; no cutting, welding, or permanent modification of vehicle.
  • Use with a parallel-flow condenser for improved performance with R-134a.
  • For best results, change receiver drier, TXV, and pressure switch.


Vehicle Model

All W123 Turbodiesels 1981-85, W123 Non-Turbo 300D,TD,CD 1980-85, W123 240D 1980-83

Hose Fittings

Uncrimped Fittings & Hose, Ready to Install Fittings & Hose

Compatible Compressor Type

Sanden SD5H14 Model 6630, Sanden SD7H15 Model 4272, Use these models only


Flat rate shipping in USA (applied at checkout), International shipping available (contact us)


Brackets: Lifetime, All other components: 1 Year