Does this work for the cardiology IV?

Yes. All current Littmann stethoscopes (with the exception of electronic models) have similar components. The Cardiology IV has a 1.3 inch (3.3 cm) bell and a 1.7 inch (4.3 cm) chestpiece. The Classic III, which I purchased, has identical dimensions. Both share the same double-sided turnable diaphragms, such as this replacement kit contains.

Will this fit cardiology model 3 purchased around 2003?

Hello - thank you for your question. Unfortunately, this spare parts kit will not fit that model. Please connect with our team at 1-800-228-3957 (Monday – Friday 7:30 AM – 6 PM CST) and they will be able to assist with providing the correct model number. We look forward to speaking with you soon.

What is the diameter of each of the diaphragms?

Hi Julia! The Classic III Stethoscope has a double-sided tunable chestpiece. The approximate chestpiece diameters are: Adult side 1.7"/4.3cm Pediatric side 1.4"/3.4cm Let us know if you have additional questions!

buenas tardes sera compatible con classic ii y con classic ii se

Debe obtener el repuesto para classic II

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3M Littmann Stethoscope Spare Parts Kit – Black, Compatible with Classic III™, Cardiology IV™, CORE Digital, Includes Eartips, Adult & Pediatric Diaphragms, Non-Chill Bell Sleeve, 40016

Product ID: 18369080

Details

Brand
Littmann
Color
Black
Global Trade Identification Number
UPC
707387783969
Unit Count
1.0 Count

🎧Snap-tight soft-sealing eartips for perfect acoustic seal

🩺Tunable diaphragms for adult & pediatric use

❄️Non-chill bell sleeve for patient comfort

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Description

🖤 Upgrade your stethoscope game with precision and comfort that never quits.

COMFORT FIRST EARTIPS - Snap-tight, soft-sealing eartips ensure a secure fit and superior sound isolation for long shifts.
ALL IN ONE CONVENIENCE - Complete replacement kit in sleek black, so you’re always ready to perform at your best.
SEAMLESS COMPATIBILITY - Specifically engineered for Classic III™, Cardiology IV™, and CORE Digital stethoscopes—no guesswork.
PATIENT FRIENDLY BELL SLEEVE - Non-chill design keeps patients comfortable during every exam.
PRECISION TUNABLE DIAPHRAGMS - Switch effortlessly between adult and pediatric frequencies with patented tunable technology.

The 3M Littmann Stethoscope Spare Parts Kit offers premium replacement components—adult and pediatric tunable diaphragms, snap-tight soft-sealing eartips, and a non-chill bell sleeve—designed exclusively for Classic III™, Cardiology IV™, and CORE Digital models. Engineered for durability and acoustic excellence, this kit ensures your stethoscope performs like new, enhancing diagnostic confidence and patient comfort.

Specifications

ASIN	B004HFLWHY
Best Sellers Rank	#622 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Medical Stethoscope Parts
Brand Name	Littmann
Color	Black
Customer Reviews	4.8 4.8 out of 5 stars (13,832)
Global Trade Identification Number	00707387773007, 00707387783969
Manufacturer	3M
Model Number	7100137383
Part Number	7100137383
UPC	707387783969
Unit Count	1.0 Count

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