SAMSUNG MSV172AL2J/SM3 Refrigerator Compressor uses R-134 refrigerant; this part is a positive displacement pump that compresses the refrigerant in the sealed system of a refrigerator. This Samsung part is quality tested for excellent performance as per Samsung's standards. SAMSUNG MSV172AL2J/SM3 is a genuine Original Equipment Manufacturer (Authorized OEM) part. Compatible Brands: Samsung. SAMSUNG MSV172AL2J/SM3 Compressor fits perfectly with various supported Samsung brand models. New OEM Samsung Part #MSV172AL2J/SM3 may differ in appearance but is a brand new, unused, functional equivalent and a perfect fit replacement/substitution to prior Samsung Part #: MSV172AL2J/SM1. This part is compatible with models including; RF263TEAESR/AA-07,RF263TEAESR/AA-04,RS25J500DWW/BY-00,RF263TEAESR/AA-03,RS25J500DWW/BY-01,RS25J500DWW/BY-02,RS25J500DSR/AA-01,RS25J500DSR/AA-00,RS25H5000SP/AA-00,RS25J500DSR/AA-02,RF26HFENDSR/AA-02,RF26HFENDSR/AA-03,RS25H5000BC/AA-00,RF263BEAEBC/AA-03,RF263BEAEBC/AA-04,RF260BEAESR/AA-05,RF261BEAESR/AA-06,RF263TEAESG/AA-01,RF263TEAESG/AA-00,RF263TEAESG/AA-03,RF263TEAESG/AA-02,RF263TEAESG/AA-04,RF263BEAESR/AA-03,RF263BEAESR/AA-04,RF263BEAESR/AA-05. A Service Technician Should Do This Repair Because It Involves Recovering And Recharging Refrigerant In The Sealed Refrigerant System.