Littmann Stethoscope Spare Parts Kit, Classic III and Cardiology IV
A genuine 3M Littmann spare parts kit containing replacement diaphragms for both sides of a Classic III or Cardiology IV stethoscope chestpiece, in black. It is a practical fit for clinics and hospital departments.
The Littmann Stethoscope Spare Parts Kit, Classic III and Cardiology IV, model 40016, is a genuine 3M accessory pack that lets clinicians keep their stethoscope performing like new rather than replacing the whole instrument. It contains one tunable single piece diaphragm sized for the adult side of the two sided chestpiece and a second tunable diaphragm sized for the pediatric side, both finished in black to match the original stethoscope.
Tunable diaphragms wear or lose their acoustic seal over time with repeated cleaning and use, and a worn diaphragm noticeably affects sound clarity during auscultation, so keeping a spare kit on hand is a practical way for doctors, nurses and paramedics to maintain accurate heart and lung sound quality without downtime.
This kit is compatible specifically with the 3M Littmann Classic III and Cardiology IV stethoscope ranges, making it a straightforward, low cost way to extend the working life of an existing instrument used daily in clinics, hospitals and home visits.

