---
product_id: 77359415
title: "Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission"
brand: "speedway motors"
price: "¥17703"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/77359415-speedway-motors-black-flywheel-flexplate-dust-cover-fits-th350-th400
store_origin: JP
region: Japan
---

# Fits TH350/TH400 transmissions, Chevy & GM compatible Precision slotted mounting holes for easy fit Steel durability for long-lasting protection Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission

**Brand:** speedway motors
**Price:** ¥17703
**Availability:** ✅ In Stock

## Summary

> 🛠️ Protect your powertrain with precision and style!

## Quick Answers

- **What is this?** Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission by speedway motors
- **How much does it cost?** ¥17703 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/77359415-speedway-motors-black-flywheel-flexplate-dust-cover-fits-th350-th400)

## Best For

- speedway motors enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Heavy-duty steel construction resists rust and wear
- • **Effortless Installation:** Slotted mounting holes ensure quick, hassle-free setup
- • **Upgrade-Ready Compatibility:** Works seamlessly with bolt kits 91303811 or 91303831
- • **Precision Fit for Chevy & GM:** Designed specifically for passenger-side starters on TH350/TH400
- • **Ultimate Transmission Shield:** Keep dirt, grime, and debris out to extend transmission life

## Overview

The Speedway Motors Black Flywheel/Flexplate Dust Cover is a durable steel shield designed to protect TH350 and TH400 transmissions from dirt and debris. Engineered for Chevy and GM engines with passenger-side starters, it features slotted mounting holes for easy installation and is compatible with specific bolt kits for a seamless upgrade. This painted, heavy-duty cover ensures long-lasting transmission performance and reliability.

## Description

Full description not available

## Features

- Effective Transmission Protection: Flywheel/flexplate dust cover keeps debris, dirt, and grime out of your TH-350 or TH-400 transmission for improved longevity.
- Perfect Fit Compatibility: Designed to fit Compatible with Chevy and GM engines with the starter located on the passenger side, ensuring seamless installation and performance.
- Durable Construction: Built for durability and reliability, providing a clean and efficient replacement for greasy, rusted, or worn-out stock covers.
- Slotted Mounting Holes: Features slotted mounting holes (front 18.5"–19.5", rear 9"–11") with round crank notch and precise dimensions for easy installation.
- Hardware Compatibility: Hardware not included; compatible with flywheel cover bolt kits 91303811 or 91303831 for a hassle-free setup.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Plain |
| Brand | Speedway Motors |
| Auto Part Position | Center |
| Installation Type | Self-Adhesive |
| Finish Type | Painted |
| Item Thickness | 1 Inches |
| UPC | 686175658170 |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer | Speedway Motors |
| Model | Speedway Motors |
| Item Weight | 1.95 pounds |
| Product Dimensions | 20 x 7.8 x 7.5 inches |
| Item model number | 9101735 |
| Exterior | Painted |
| Manufacturer Part Number | 9101735 |

## Product Details

- **Color:** Plain
- **Brand:** Speedway Motors
- **Material:** Alloy Steel
- **Fit Type:** Vehicle Specific Fit
- **Auto Part Position:** Center

## Images

![Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission - Image 1](https://m.media-amazon.com/images/I/51RzU4xnXnL.jpg)
![Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission - Image 2](https://m.media-amazon.com/images/I/51i2p0aa+YL.jpg)
![Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission - Image 3](https://m.media-amazon.com/images/I/51HmmTeQTKL.jpg)
![Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission - Image 4](https://m.media-amazon.com/images/I/41mrKcST77L.jpg)
![Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission - Image 5](https://m.media-amazon.com/images/I/51+8XE2H8XL.jpg)

## Questions & Answers

**Q: is this steel?**
A: Yeah it's steel

**Q: Does this cover actually weigh 11 lbs?  Seems like that may be incorrect**
A: Close to that.  It is Metal not plastic.  Had to do a little modification on this cover to keep it from rubbing on the fly wheel when you put full power to the motor from a stand still stop.  Other than that it works well to keep the flex plate protected form road debris.

**Q: Do you sell the bolts that attach this to the th350 or know the size?**
A: No the bolts are not included,  the bolts are 5/16"  x 3/4 " in length hope  that helps you.

**Q: Will this fit 77 Chevy El Camino**
A: If it has a 350 and I think it fits a 305

## Customer Reviews

### ⭐⭐⭐⭐⭐ This will protect your flywheel!
*by J***R on March 3, 2025*

Heavy duty protection that fits really well once installed. This is made of coated metal and very rigid and durable.If you have transmission lines below your starter you will likely have to bend those lines (carefully) to get this in place. Also note, if you have headers you WILL scuff them up getting this into place.If you have headers and transmission lines you “may” want to consider a plastic option for more flexibility when installing.Note, your starter has to be on the passenger side for this to fit. I have a TH350 and bolt holes align well. You will also need bolts and washers. 1/4-20 fit but loose in the thread. Spent $8 and but the ones that Amazon recommends when you buy this (unless you already have them).

### ⭐⭐⭐⭐⭐ Bolted right up!
*by A***R on April 23, 2025*

Really nice fit and finish, looked great installed. Bolted right up.

### ⭐⭐⭐⭐ fitment.
*by C***E on February 28, 2025*

product arrived as scheduled and appeared to be free of defects from shipping. However, the cover did not fit perfectly. You will probably have to grind or modify the starter opening hole just a little bit. Other than that, It bolted right in.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.jp/products/77359415-speedway-motors-black-flywheel-flexplate-dust-cover-fits-th350-th400](https://www.desertcart.jp/products/77359415-speedway-motors-black-flywheel-flexplate-dust-cover-fits-th350-th400)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*