---
product_id: 82067917
title: "Stethoscope Spare Parts Kit – Classic II Pediatric Diaphragm Assembly, Includes Black & Gray Rim, Floating Diaphragm, 40012"
brand: "3m littmann"
price: "€ 30.54"
currency: EUR
in_stock: true
reviews_count: 13
category: "3 M Littmann"
url: https://www.desertcart.fr/products/82067917-stethoscope-spare-parts-kit-classic-ii-pediatric-diaphragm-assembly-includes
store_origin: FR
region: France
---

# 3.3cm pediatric diaphragm Floating diaphragm tech Dual black & gray rim set Stethoscope Spare Parts Kit – Classic II Pediatric Diaphragm Assembly, Includes Black & Gray Rim, Floating Diaphragm, 40012

**Brand:** 3m littmann
**Price:** € 30.54
**Availability:** ✅ In Stock

## Summary

> 🎧 Hear every heartbeat, never miss a moment.

## Quick Answers

- **What is this?** Stethoscope Spare Parts Kit – Classic II Pediatric Diaphragm Assembly, Includes Black & Gray Rim, Floating Diaphragm, 40012 by 3m littmann
- **How much does it cost?** € 30.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/82067917-stethoscope-spare-parts-kit-classic-ii-pediatric-diaphragm-assembly-includes)

## Best For

- 3m littmann enthusiasts

## Why This Product

- Trusted 3m littmann brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Repairs:** OEM parts designed for perfect Classic II fit
- • **Snap-Tight Eartips:** Secure fit for all-day comfort and safety
- • **Dual-Rim Versatility:** Black & gray rims for seamless assembly
- • **Floating Diaphragm Innovation:** Enhanced sound clarity with tunable tech
- • **Precision Pediatric Acoustics:** 3.3cm diaphragm tuned for tiny hearts

## Overview

The 3M Littmann Classic II Pediatric Diaphragm Assembly Spare Parts Kit includes a 3.3cm floating diaphragm and dual black & gray rims, engineered exclusively for Classic II Pediatric stethoscopes. Designed with tunable diaphragm technology, it ensures superior acoustic performance and easy repairs, maintaining the trusted quality healthcare professionals rely on.

## Description

"3M™ Littmann® Stethoscopes offers the high quality that medical professionals expect, and each replacement part and accessory meets the same demanding standards. Conveniently packaged in kits that correspond to our stethoscope models, Littmann stethoscope replacement parts and accessories make repairs simple. Each item is carefully manufactured to work seamlessly with existing equipment. The 3M Littmann Stethoscope Spare Parts Kit – Classic II Pediatric Diaphragm Assembly, Includes Black & Gray Rim, Floating Diaphragm, 40012 contains a black rim and gray rim and a floating diaphragm for chestpiece. Tunable diaphragm technology—a 3M invention—lets clinicians hear different frequency sounds by simply adjusting the pressure on the chestpiece. Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency sounds. This time-saving feature allows the healthcare provider to focus on both adult and pediatric patients. Snap-tight, soft-sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fit. Eartips snap firmly onto the ends of the eartubes and, for safety, require a significant effort to remove."

Review: Saved my stethoscope. - As a pediatrician, my stethoscope gets chewed on a lot, and the ring that holds the diaphragm finally split. Glad to find these replacements. It's a little hard to get the ring onto the stethoscope. Definitely put the diaphragm into it first as the instructions suggest.
Review: Worked as it should - Perfect for my Littmann stethoscope. Perfect fit and excellent quality as hoped.

## Features

- This Parts Kit ONLY FITS THE CLASSIC II PEDIATRIC STETHOSCOPE.
- Replacement of eartips, and the floating diaphragm on Classic II Pediatric stethoscopes
- Dual-sided chestpiece with small 3.3cm diaphragm is ideal for pediatric patients.
- Contains one floating diaghragm for the stethoscope chestpiece
- Contains a black rim for assembly of the diaphragm to the chestpiece
- Contains a Gray rim for assembly of the diaphragm to the chestpiece

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B014GVC3SA |
| Best Sellers Rank | #42,230 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #19 in Medical Stethoscope Parts |
| Date First Available | August 25, 2015 |
| Department | Mens |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.83 ounces |
| Item model number | 40012 |
| Language | Spanish |
| Manufacturer | 3M |
| Product Dimensions | 0.02 x 0.04 x 0.01 inches |

## Images

![Stethoscope Spare Parts Kit – Classic II Pediatric Diaphragm Assembly, Includes Black & Gray Rim, Floating Diaphragm, 40012 - Image 1](https://m.media-amazon.com/images/I/518cbBYYGCL.jpg)

## Questions & Answers

**Q: Does this diaphragm fit the pediatric/small side of the cardiology iii stethoscope also?**
A: Yes i think so...

**Q: Would this fit onto the bell side of a 3m littmann classic II se? basically i would like to convert the bell into a pediatric sized diaphragm**
A: It might work for you. 
I had to return my purchase because the 3m is mislabeled. The replacement that came was for the "Infant" size bell and NOT the Pediatric diaphragm as stated.

**Q: what is the diameter of the ring?**
A: 1 3/8 inches or 3.7 cm

**Q: Will this product fit 3m littmann select stethoscope, purple tube, 28 inch, 2294?**
A: This kit is for the Classic II Pediatric stethoscope, it is not made to fit your model. Thank you!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Saved my stethoscope.
*by M***K on January 2, 2026*

As a pediatrician, my stethoscope gets chewed on a lot, and the ring that holds the diaphragm finally split. Glad to find these replacements. It's a little hard to get the ring onto the stethoscope. Definitely put the diaphragm into it first as the instructions suggest.

### ⭐⭐⭐⭐⭐ Worked as it should
*by T***C on November 30, 2023*

Perfect for my Littmann stethoscope. Perfect fit and excellent quality as hoped.

### ⭐⭐⭐⭐⭐ Great product
*by A***R on August 16, 2024*

Was easy to install. Great buy.

## Frequently Bought Together

- 3M Littmann Kit de piezas de repuesto para Estetoscopio Classic II Pediátrico con juego de diafragma (Modelo 40012)
- 3M Littmann Cardiology IV Diagnostic Stethoscope, 6165, More Than 2X as Loud, Weighs Less, Stainless Steel Rainbow-Finish Chestpiece, 27' Black Tube, Stem, and Headset
- 3M™ Littmann® Stethoscope Identification Tag, Black, 40007

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-28*