Klima Design Works | W126 Sanden SD A/C Compressor Mounting Kit
product-template-default,single,single-product,postid-21492,woocommerce,woocommerce-page,ajax_fade,page_not_loaded,boxed,select-theme-ver-4.2,,wpb-js-composer js-comp-ver-5.0.1,vc_responsive

W126 Sanden SD A/C Compressor Mounting Kit


For W126 300SD Mercedes originally fitted with Delco R4 compressors (1980-1985 300SD)


Tired of a/c compressor failure in your W126 300SD? The original equipment Delco / Harrison R4 compressors fitted to these vehicles have a well-earned reputation for poor performance and short life. Upgrade your compressor now and say goodbye to the loud, leaky, short-lived 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. No special tools required. No permanent modification of the vehicle. Use with either R-12 & R-134a refrigerant. Offered with or without compressor, and with ready to install hoses or unfinished fittings and hose.


Please select your hose and compressor choice. Read full product description below. Kit is made to order; allow 7 business days processing time. 


Flat rate shipping starts at $15.00 in USA. Fees added at checkout. International rate varies. 

SKU: KCKW126BB Category:

We are the first and only company to offer a robust and elegant Sanden a/c compressor mounting kit for the W126 300SD. Brackets made in USA from the highest quality materials. 



Kit Contents:

  • Precision steel mounting brackets with yellow zinc protective finish
  • Complete illustrated instructions (PDF File)
  • 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
  • OEM Compatible Delco male electrical connector and terminals included
  • New v-belt included 


Vehicle Model Compatibility:


Compressor Compatibility:

  • Kit uses a Sanden SD7H15 Model 4272 (7-cylinder). Available as an optional purchase. 


Hose & Line:

  • Kit includes new high-pressure hose running from compressor head to condenser input, and new low-pressure hose from compressor to secondary firewall. Original hoses/lines connecting to compressor (2 pieces) will be removed and replaced.
  • Original liquid lines (receiver drier to thermal expansion valve), and low pressure suction line (thermal expansion valve to secondary firewall) will be re-used.
  • Make sure all remaining original lines are in good condition before installing kit.
  • Available with either ready-to-install hose components, or with unfinished hose and fittings (installer must crimp fittings with appropriate tool).
  • We use only Goodyear Galaxy full barrier hose for durability and multi-refrigerant compatibility. 


Additional information:

  • Use with either R-12 or R-134a. If using R-12, be sure to thoroughly drain out PAG oil contained in new compressor and replace with mineral oil. 
  • Hoses include R-134a-style charge ports. 
  • No permanent modifications to vehicle.
  • Flush remaining system components thoroughly before installing.
  • Use with a parallel-flow condenser for best results with R-134a.
  • For best results, change receiver drier, TXV, and pressure switch.
  • Legal Disclaimer: This Product is intended for off-road use only.


We support American Manufacturing Enterprises & Workers

Weight 30 lbs
Vehicle Model

All W126 300SD Models 1980-1985

Hose Fittings

Uncrimped Fittings & Hose, Ready to Install Fittings & Hose

Compatible Compressor Type

Sanden SD7H15 Model 4272, Use this model only


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


Brackets: Lifetime, All other components: 1 Year