Best Transmission Tailshaft Plugs

Do you need the best transmission tailshaft plugs to stop leaks and keep your workspace clean? We provide top tested options for durability and easy installation to ensure a great repair experience.

Transmission tailshaft plugs are essential tools for any car repair. They stop leaks and keep your workspace clean. Whether you’re a DIY enthusiast or a pro mechanic, these plugs are must-haves.

We’ve tested and reviewed the best transmission tailshaft plugs to save you time and hassle. From easy installation to durable materials, these plugs deliver top performance. Discover the perfect fit for your vehicle and drive with confidence.

List of Top 10 Transmission Tailshaft Plugs

Title	Best For	Price
Casrram Transmission Output Tailshaft Cap Plug Kit Compatible with TH350 700R4 C4 Powerglide 2004R AOD M5R2 Output Yoke Seal (5pcs)	This Casrram Transmission Output Tailshaft Cap Plug Kit is perfect for car owners and mechanics who want to keep their transmissions leak-free and clean. It’s easy to install and works with many popular transmission types.	View on Amazon (paid link)
Lisle 23400 Transmission/Transaxle Plug	Car owners and mechanics need this plug for leaks.	View on Amazon (paid link)
Casrram Transmission Output Tailshaft Cap Plug Kit Compatible with TH400 4L80E C6 E40D 4R100 Output Yoke Seal (5 pcs)	This Casrram Transmission Output Tailshaft Cap Plug Kit is perfect for car owners and mechanics who want to keep their transmissions leak-free and clean. It’s easy to install and works great for TH400, 4L80E, C6, E40D, and 4R100 transmissions.	View on Amazon (paid link)
Powerhouse Products COMP Cams POW301230 Plug (Transmissiontailshaft)	This Powerhouse Products COMP Cams POW301230 Plug is perfect for car owners who need a reliable transmission tailshaft plug. It’s designed for good performance and fits specific vehicles.	View on Amazon (paid link)
23400 Transmission/Transaxle Plug Kit, 5-Piece Replacement for Lisle with Adapter for Ford, Fits Cars & Pickups	This 23400 Transmission/Transaxle Plug Kit is perfect for car and truck owners who want a reliable, leak-free solution for their vehicles. It’s ideal for DIY repairs and professional mechanics alike.	View on Amazon (paid link)
Tailshaft End Cap Plug TH350 700R4 C4 Powerglide 2004R Output Yoke Seal	This Tailshaft End Cap Plug is perfect for anyone fixing or upgrading their car’s transmission. It fits many popular models, making it a great choice for DIY repairs or professional work.	View on Amazon (paid link)
Bzsunway Replace Part for 23400 Transmission/Transaxle Plug Cover a Range of 1” – 2.180” Compatible with Most Import and Domestic Cars and Pickups	This product is perfect for car owners and mechanics who need a reliable and durable solution to prevent transmission fluid leaks. It’s easy to install and works great for most cars and pickups.	View on Amazon (paid link)
Transmission/Transaxle Plugs 23400	This kit fits many cars and trucks. The plugs stop fluid leaks.	View on Amazon (paid link)
Tail Shaft End Cap Plug C6 Transmission Output Yoke Seal	This Tail Shaft End Cap Plug is perfect for anyone fixing a C6 or E40D (4R100) transmission. It stops leaks when the tail shaft is off or the transmission is out.	View on Amazon (paid link)
Transmission Tailshaft Plug for GM TH350 Muncie Saginaw, 27 Spline, Each	This Transmission Tailshaft Plug is perfect for car enthusiasts and mechanics who work on GM vehicles. It’s ideal for sealing transmissions during storage, transport, or repairs.	View on Amazon (paid link)

Detailed Reviews

We chose the top 10 plugs to stop your leaks for sure. You can trust this list to show you the best parts for your car. Our guide is simple and works for every driver. See how we find the perfect plug for your ride today.

1. Casrram Transmission Output Tailshaft Cap Plug Kit Compatible with TH350 700R4 C4 Powerglide 2004R AOD M5R2 Output Yoke Seal (5pcs)

This Casrram cap keeps fluid inside your transmission. It stops leaks on TH350 and 700R4 transmissions.

Just plug it into the port. No tools or skill needed for this job. It keeps your workshop floor dry and clean.

You will get five caps in the box. We stand behind this product with a one-year warranty.

Pros	Cons
Seals leaks, keeps your workspace clean and dry. Fits multiple transmissions, saves time and money. Easy plug-and-play installation, no tools needed. Durable materials, long-lasting protection for your transmission. 1-year warranty, peace of mind guaranteed.	Limited to specific transmission types, not universal. No tools included, DIY installation required. Only 5 pieces, may not cover all needs.

Perfect For:

This Casrram Transmission Output Tailshaft Cap Plug Kit is perfect for car owners and mechanics who want to keep their transmissions leak-free and clean. It’s easy to install and works with many popular transmission types.

Ready to Purchase?

View Price on Amazon (paid link)

Best Transmission Input Shafts

2. Lisle 23400 Transmission/Transaxle Plug

The Lisle 23400 Transmission/Transaxle Plug is a versatile tool for car repairs. It fits most import and domestic cars and pickups, making it a must-have for any mechanic.

This tool has five stepped plugs that prevent slipping. It covers a wide range of sizes, from 1″ to 2.180″. The adapter 23450 also helps with Ford Transaxles.

Pros	Cons
You get five easy sizes for vehicles. The stepped design prevents plugs from slipping. It fits all import and domestic cars. It covers a big range of sizes. The adapter helps Ford vehicles fit well.	Limited to specific vehicle types, not universal. Adapter required for Ford Transaxles, extra cost. No instructions included, installation may be tricky.

Perfect For:

Car owners and mechanics need this plug for leaks.

Ready to Purchase?

View Price on Amazon (paid link)

3. Casrram Transmission Output Tailshaft Cap Plug Kit Compatible with TH400 4L80E C6 E40D 4R100 Output Yoke Seal (5 pcs)

The Casrram Transmission Output Tailshaft Cap Plug Kit is compatible with TH400, 4L80E, C6, E40D, and 4R100 transmissions. It’s made from high-quality materials to ensure durability and reliability.

This kit seals the tail shaft, preventing leaks and debris from entering the transmission. It’s easy to install, keeping your workspace clean and dry during repairs.

Package includes 5 plugs. 1-year warranty included. Contact us for any questions.

Pros	Cons
Seals tight, prevents leaks, keeps floors dry. Fits TH400, 4L80E, C6, E40D, 4R100 transmissions. Easy install, plug and play, no hassle. High-quality material, durable, long-lasting. 5-piece kit, great value, 1-year warranty.	Limited Compatibility: Only fits specific transmissions, not universal. No Tools Included: Requires separate tools for installation. Bulk Purchase: Five-piece kit may be more than needed.

Perfect For:

Ready to Purchase?

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4. Powerhouse Products COMP Cams POW301230 Plug (Transmissiontailshaft)

Upgrade your ride today. This plug stops messy leaks fast.

Built in the USA, it fits your car right. Expect top performance every time you drive.

It is tough. It is reliable. It is ready.

Pros	Cons
Boost your vehicle’s performance with the COMP Cams POW301230 Plug. Easy to install, this plug is vehicle specific for a perfect fit. Lightweight and compact, it’s simple to handle and transport. Designed for good performance, it’s a reliable choice for your car. Made in the USA, it’s a high-quality product you can trust.	Only fits specific vehicles May break under heavy loads Only one plug per package

Perfect For:

This Powerhouse Products COMP Cams POW301230 Plug is perfect for car owners who need a reliable transmission tailshaft plug. It’s designed for good performance and fits specific vehicles.

Ready to Purchase?

View Price on Amazon (paid link)

5. 23400 Transmission/Transaxle Plug Kit, 5-Piece Replacement for Lisle with Adapter for Ford, Fits Cars & Pickups

The 23400 Transmission/Transaxle Plug Kit is a 5-piece replacement for Lisle. It fits cars and pickups, both imported and domestic. This kit works for transmissions and transaxles.

The plugs are leak-proof and easy to install. They are made of durable plastic and come with a satisfaction guarantee.

Pros	Cons
Universal fit for cars and trucks, replacing part 23400. Leak-proof seals keep transmission fluid secure and in place. Durable plastic resists impact, rust, and deformation for long life. Easy install with plugs sized for most common applications.	Not metal, may not suit all heavy-duty needs. Adapter required for Ford, adds extra installation step. Plastic material might raise durability concerns over time.

Perfect For:

This 23400 Transmission/Transaxle Plug Kit is perfect for car and truck owners who want a reliable, leak-free solution for their vehicles. It’s ideal for DIY repairs and professional mechanics alike.

Ready to Purchase?

View Price on Amazon (paid link)

6. Tailshaft End Cap Plug TH350 700R4 C4 Powerglide 2004R Output Yoke Seal

This hard plastic plug fits tailshafts over one inch. It stops leaks on many cars. Buy this part and save time.
This cap fits TH350 and 700R4 cars. New seals help your car run better.

Pros	Cons
Fits many transmissions with a tailshaft over one inch. New plastic end plug cap for output shaft. Works with TH350, 700R4, C4, and more. Simple to install and use.	Plastic material may not be as durable as metal. Fits specific tailshafts only, measure before buying. No seals included, requires separate purchase for full installation.

Perfect For:

This Tailshaft End Cap Plug is perfect for anyone fixing or upgrading their car’s transmission. It fits many popular models, making it a great choice for DIY repairs or professional work.

Ready to Purchase?

View Price on Amazon (paid link)

7. Bzsunway Replace Part for 23400 Transmission/Transaxle Plug Cover a Range of 1” – 2.180” Compatible with Most Import and Domestic Cars and Pickups

The Bzsunway Replace Part is a must-have for car repairs. It fits most cars and pickups, making it versatile. This part is easy to use and built to last.

Its stepped design ensures a secure fit, preventing leaks. The black finish protects against rust, keeping it reliable for years.

With a 100% satisfaction guarantee, you’re covered. If there’s an issue, contact us, and we’ll help within 24 hours. Trust this part for smooth, leak-free performance.

Pros	Cons
Fits most cars and trucks, replacing part number 23400 easily. Stops fluid leaks with a secure, stepped design for reliability. Built tough from heavy-duty steel with rust-proof coating. Quick install after removing the drive shaft or axle.	Not universal, may not fit all car models. Requires disassembly, needs drive shaft removal for installation. No tools included, must have own tools for setup.

Perfect For:

This product is perfect for car owners and mechanics who need a reliable and durable solution to prevent transmission fluid leaks. It’s easy to install and works great for most cars and pickups.

Ready to Purchase?

View Price on Amazon (paid link)

8. Transmission/Transaxle Plugs 23400

Transmission/Transaxle Plugs 23400 fit many vehicles. This kit has five plugs for different cars and trucks. It works for both transmissions and transaxles.

The plugs stop leaks and seal tightly. They fit holes from 1″ to 2.180″ in size. This kit covers all common sizes.

It includes a special adapter for Ford Transaxles. Easy to install, just follow the simple steps.

Pros	Cons
Fits many different cars. Stops leaks fast and easy. Great sizes for full coverage. Simple install by hand. Fix leaks on your drive train.	Requires shaft removal for installation, adding extra steps. Multiple plugs needed for transaxles, increasing cost and effort. Adapter only for Ford, limiting use for other brands.

Perfect For:

This kit fits many cars and trucks. The plugs stop fluid leaks.

Ready to Purchase?

View Price on Amazon (paid link)

9. Tail Shaft End Cap Plug C6 Transmission Output Yoke Seal

The CT6161 is a new output shaft yoke end plug cap designed for C6 and other vehicles. It stops leaks while the tail shaft is disconnected or the transmission is out of the vehicle.

The CT6161 is easy to install. It fits C6 and E40D (4R100) transmissions. It prevents fluid losses.

This plug cap is made of high-quality materials. It seals the output shaft yoke properly. It keeps your vehicle running smoothly.

Pros	Cons
Stops leaks fast. Fits C6 and E40D. Quick install no tools. Durable seal lasts. Keeps transmission clean.	Not universal: Fits only C6, E40D (4R100) transmissions. Single use: Works only when tail shaft is disconnected. No repair: Doesn’t fix existing leaks, just stops new ones.

Perfect For:

This Tail Shaft End Cap Plug is perfect for anyone fixing a C6 or E40D (4R100) transmission. It stops leaks when the tail shaft is off or the transmission is out.

Ready to Purchase?

View Price on Amazon (paid link)

10. Transmission Tailshaft Plug for GM TH350 Muncie Saginaw, 27 Spline, Each

Stop fluid leaks fast. This plug fits GM transmissions. It stops messy spills.

Keep your garage clean. Use it for storage or transport. It snaps in with ease.

Get yours right now. Protect your drivetrain today.

Pros	Cons
Fits GM transmissions securely and leak-free. Lightweight aluminum construction resists wear. Installs quickly without tools. Prevents fluid loss during storage. Designed for shop and garage use.	Limited spline sizing Fits only GM 27 spline models. Aluminum may bend If hit or dropped hard. No locking washer to hold it in place.

Perfect For:

This Transmission Tailshaft Plug is perfect for car enthusiasts and mechanics who work on GM vehicles. It’s ideal for sealing transmissions during storage, transport, or repairs.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Transmission tailshaft plugs stop leaks. They keep your garage clean.
I changed my transmission fluid last week. The plug snapped right in. My garage floor stayed dry. Easy work for me. The assembly was quick too. I put the plug in the port. No tools were needed. My workspace stayed clean during the repair.
* Compatibility: Check your transmission model number. Pick a plug that fits well. Do not guess the size.
* Ease of Installation: Find an easy-to-use design. No tools are often needed. Just snap it into the port.
* Material Quality: Use strong and tough materials. Cheap plastic might break. Choose durable parts for long use.
* Leak Protection: A good plug stops leak fast. It seals the tail shaft tight. This keeps your floor dry.
* Warranty Coverage: Good brands offer a warranty. Look for a one-year guarantee. This shows they stand behind the product.