---
product_id: 208226023
title: "GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER GEAR 23 TEETH BLACK SPEEDO W/BULLET CLAMP BOLTS"
brand: "aftermarket"
price: "€ 60.17"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/208226023-gm-turbo-350-th350-muncie-powerglide-transmission-speedometer-gear-23
store_origin: FI
region: Finland
---

# Complete bolt & clamp kit 23 teeth precision gear Durable plastic-metal blend GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER GEAR 23 TEETH BLACK SPEEDO W/BULLET CLAMP BOLTS

**Brand:** aftermarket
**Price:** € 60.17
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift your ride into precision mode with the ultimate speedometer gear upgrade!

## Quick Answers

- **What is this?** GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER GEAR 23 TEETH BLACK SPEEDO W/BULLET CLAMP BOLTS by aftermarket
- **How much does it cost?** € 60.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/208226023-gm-turbo-350-th350-muncie-powerglide-transmission-speedometer-gear-23)

## Best For

- aftermarket enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Robust plastic and metal construction designed for long-term durability under demanding conditions.
- • **All-Inclusive Kit:** Comes with bullet housing, o-ring, inner seal, hold down clamp, plus metric & standard bolts—everything you need in one package.
- • **Precision Perfected:** 23-tooth gear engineered to exceed OEM standards for flawless speedometer accuracy.
- • **Custom Speed Control:** Easily swap gears to fine-tune your speedometer readings and stay perfectly calibrated.
- • **Seamless Compatibility:** Tailored fit for GM Turbo 350, TH350, and Muncie Powerglide transmissions—upgrade without hassle.

## Overview

This GM Turbo 350 TH350 Muncie Powerglide speedometer gear kit features a durable 23-tooth black gear crafted from a plastic-metal blend, ensuring OEM-level accuracy and longevity. The complete kit includes all necessary components—bullet housing, seals, clamps, and bolts—offering seamless compatibility with popular GM transmissions and customizable speedometer calibration.

## Description

INCLUDED:  BULLET HOUSING O-RING & INNER SEAL  HOLD DOWN CLAMP  METRIC & STANDARD BOLTS  TRANSMISSION DRIVEN SPEEDOMETER GEAR   23T BLACK  Gears Meet or Exceed OEM   Quality Gears have a higher percentage of fiberglass giving them a higher temp rating and increasing tinsel strength for the drive cable.  Colors may very   Helpful tips   Driven gear: Fewer teeth will speed up the speedometer reading, more teeth will slow down the reading. For every tooth added or subtracted is + or - 2mph.  Drive gear: Fewer teeth will slow down the reading and more teeth will speed up the reading. For every tooth added or subtracted is + or - 10mph.   Being a Builder / Engineer. Quality is every thing.

## Features

- Durable Construction: Crafted with a blend of plastic and metal for robust performance and longevity
- Precision Engineering: 23T black gear meets or exceeds OEM standards for accurate speedometer readings
- Complete Kit: Includes bullet housing, o-ring, inner seal, hold down clamp, and metric & standard bolts
- Versatile Fitment: Compatible with GM Turbo 350 and TH350 Muncie Powerglide transmissions
- Customizable Speedometer: Adjust speedometer readings by swapping out gears for different tooth counts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GDEngineering |
| Brand | Aftermarket |
| Item Weight | 4 ounces |
| Package Dimensions | 8 x 5 x 1 inches |
| Manufacturer Part Number | 3987919 3987920 3987921 3987918 |
| OEM Part Number | 345215 3987920 398792 3987918 3987919 3987920 3987921 3987922 |

## Product Details

- **Brand:** Aftermarket
- **Material:** PLASTIC METAL
- **Manufacturer:** GDEngineering

## Images

![GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER GEAR 23 TEETH BLACK SPEEDO W/BULLET CLAMP BOLTS - Image 1](https://m.media-amazon.com/images/I/81Ck7p3262L.jpg)
![GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER GEAR 23 TEETH BLACK SPEEDO W/BULLET CLAMP BOLTS - Image 2](https://m.media-amazon.com/images/I/71TCEWR8g5L.jpg)
![GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER GEAR 23 TEETH BLACK SPEEDO W/BULLET CLAMP BOLTS - Image 3](https://m.media-amazon.com/images/I/71aKK-0zsmL.jpg)

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**Shop now:** [https://www.desertcart.fi/products/208226023-gm-turbo-350-th350-muncie-powerglide-transmission-speedometer-gear-23](https://www.desertcart.fi/products/208226023-gm-turbo-350-th350-muncie-powerglide-transmission-speedometer-gear-23)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-20*