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

3m Littmann Stethoscope Spare Parts Kit Classic Iii Black 40016

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Description

🎧 Upgrade your diagnostic edge with authentic precision.

LIGHTWEIGHT COMPACT - At just 23.5g, these parts maintain your stethoscope’s sleek profile without added bulk.
PERFECT FIT GUARANTEE - Designed specifically for Classic III stethoscopes ensuring hassle-free installation and reliable performance.
DUAL TUNABLE DIAPHRAGMS - Seamlessly switch between adult and pediatric auscultation with precision-tuned single-piece diaphragms.
PROUDLY MADE IN THE USA - Trust in American manufacturing standards for consistent quality and reliability.
AUTHENTIC 3 M LITTMANN QUALITY - Genuine replacement parts engineered for durability and acoustic excellence.

The 3M Littmann Stethoscope Spare Parts Kit for Classic III includes two tunable single-piece diaphragms—one for adult and one for pediatric use—offering seamless acoustic versatility. Made in the USA, these genuine parts ensure a perfect fit and maintain the renowned Littmann quality and reliability, keeping your stethoscope performing at its best.

Reviews

I**G

Fits perfectly

The delivery was timely, and the spare parts are genuine Littmann products. They fit perfectly with the Classic III stethoscope.

11.06.2025

M**.

Pièce authentique pour le remplacement de la membrane du pavillon principal de mon cardiology iv. Tiens parfaitement en place et fonctionne très bien.

6.11.2021

D**N

After 7 years of using littmann classic 3 I changed the diaphragm for the first time. I had seen multiple websites and mixed reviews mentioning fake products available online. But this product is upto the mark Perfect fit product. Satisfied with the quality

13.06.2025

A**H

Lovely! So glad I got this. Saved me the hassle of buying a new stethoscope and fits so well. I highly recommend

24.07.2025

M**Y

Good to have. Fits well.

23.03.2026

C**N

Tutto come da descrizione. Ottimo

1.02.2026

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VT12516

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B004HFLWHY
Item model number	7100137383
Manufacturer	3M Littmann
Product Dimensions	3.66 x 8.74 x 16.74 cm; 23.5 g

3M Littmann Stethoscope Spare Parts Kit, Classic III, Black, 40016

Description

Specifications

Reviews

Common Questions