Best Automatic Transmission Pump Seals Seals of 2026

Name: GM Genuine Parts 12668429 Vacuum Pump Seal
Brand: GM GENUINE PARTS

Robert Reyes

Last Updated: Jan 10, 2026

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Automatic transmission pump seals are crucial components in ensuring the proper functioning of a vehicle's transmission system. These seals prevent fluid from leaking out of the transmission pump, which could cause serious damage to the engine and transmission system. Automatic transmission pump seals are made from high-quality materials that are designed to withstand the high pressures and temperatures that are common in transmission systems. They are typically easy to install and can be a cost-effective way to prevent costly repairs down the line. Whether you're a professional mechanic or a DIY car enthusiast, automatic transmission pump seals are an essential part of any transmission maintenance or repair job.

At a Glance: Our Top Picks

#TOP 1

GM Genuine Parts 12668429 Vacuum Pump Seal

9.8

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#TOP 2

BlueDevil Transmission Sealer

9.7

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#TOP 3

RKX 2.5L Vacuum Pump Reseal Kit for VW and Audi Engines

9.5

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Top 10 Automatic Transmission Pump Seals Seals

#TOP 1

GM Genuine Parts 12668429 Vacuum Pump Seal

GM GENUINE PARTS
12668429

GM Genuine Parts 12668429 Vacuum Pump Seal

The GM Vacuum Pump Seal is designed with precise dimensions to ensure it fits your vehicle perfectly, making installation straightforward and hassle-free. Its compact size, measuring just 2.6 by 2.6 by 0.4 inches, allows for easy handling and placement. To guarantee the seal is installed correctly, you’re encouraged to visit a nearby GM dealer, independent service center, or body shop—helping you avoid potential issues. This product is tailored specifically for your vehicle model, ensuring reliable performance and compatibility. With the GM Vacuum Pump Seal, you get a part that fits well and supports proper installation for your vehicle’s needs.

9.8

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What We Like

Precise fit
Compact size
Vehicle-specific design
Professional installation guidance

#TOP 2

BlueDevil Transmission Sealer

BlueDevil Products
Blue
8 Quart

BlueDevil Products Transmission Sealer – 16 oz | Seals Leaks in Automatic & Manual Transmissions | Restores Seals & Prevents Fluid Loss

BlueDevil Transmission Sealer is a sealer that guarantees a permanent seal and restores dried, cracked, and shrunken rubber seals in both manual and automatic transmissions. It falls under the Automatic Transmission Assemblies category.

9.7

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What We Like

Guaranteed permanent seal
Restores dried, cracked and shrunken rubber seals
Works in both manual and automatic transmissions

#TOP 3 Best Automatic Transaxle Pump Seal

RKX 2.5L Vacuum Pump Reseal Kit for VW and Audi Engines

RKX
RKX-2.5l-vac-pump-kit

RKX 2.5L VACUUM PUMP REBUILD/SEAL KIT replacement for Volkswagen VW 2.5 L Jetta, Beetle, Passat, Rabbit, Golf

The RKX PREMIUM vacuum pump reseal kit is designed to rebuild the 2.5L vacuum pump and stop it from leaking oil in Volkswagen Jetta, Beetle, New Beetle, Golf, Rabbit, Passat, and Audi TT RS. It includes all necessary gaskets and custom injection molded seals made from military grade Fluorocarbon (Viton) that can withstand extreme engine conditions. The kit features double lip technology (DLT) for the ultimate seal. RKX offers a limited lifetime warranty on all gaskets included, and the kit is cost-effective and easy to use.

9.5

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What We Like

Cost-effective and easy to use
Custom injection molded seals made from military grade Fluorocarbon (Viton)
Features double lip technology (DLT) for the ultimate seal

#TOP 4

RKX Vacuum Pump Rebuild Seal Kit for Ford Lincoln 3.5L EcoBoost

RKX
RKX-VPK-027

RKX Vacuum Pump Rebuild Seal Kit Compatible with Ford Lincoln 3.5L EcoBoost DL3Z2A572A

The RKX Vacuum Pump Seal Kit is designed to help you fix leaks in your Ford or Lincoln 3.5L EcoBoost engine's vacuum pump from 2015 to 2021. This kit includes all the gaskets you need to rebuild the pump, saving you from buying a whole new one, which dealers usually recommend. The seals are made from high-quality military-grade Fluorocarbon (Viton), ensuring they last even under tough engine conditions. Plus, the kit fits several original pump models, making it a reliable choice for your vehicle maintenance needs.

9.5

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What We Like

Complete gasket set
Military-grade Viton seals
Compatible with multiple OEM pumps
Cost-saving rebuild option

#TOP 5

Hydro-Gear 70525 BDP-10A Seal Kit

Hydro-Gear
70525

Hydro-Gear Genuine Original 70525 BDP-10A Pump Overhaul Seal Kit with Seals & Gaskets

The Hydro-Gear Seal Kit is a genuine OEM replacement part designed for transmission overhaul. This kit includes the 70525 Overhaul Seal Kit, ensuring proper installation and compatibility. The new, bulk packed kit comes with seals and gaskets, making it convenient for you to repair your transmission. By consulting the owner's manual for part identification, you can easily install this kit yourself, saving time and money on professional repairs.

9.3

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What We Like

Genuine OEM part
Easy installation
Includes seals and gaskets

#TOP 6

Honda Automatic Transmission Oil Seal

Honda
91206-P0Z-005
Regular

Honda Genuine 91206-P0Z-005 Automatic Transmission Oil Seal

This auto accessory is an automatic transaxle pump seal made in China. The package dimensions are 18.541 cm x 5.334 cm x 18.541 cm, and it comes in a quantity of 1.

9.2

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What We Like

Durable and long-lasting
Easy to install
Compatible with Honda vehicles

#TOP 7

MOTOKU Vacuum Pump Seal Kit for Jeep Renegade and More

MOTOKU
04892641AC

MOTOKU Vacuum Pump Rebuild Seal Kit for Jeep Renegade 2015-2020 for Dodge Dart for Fiat 500 2012-2020

The MOTOKU Vacuum Pump Seal Kit is designed to fit several popular car models, making it a versatile choice for your vehicle maintenance needs. If you drive a Jeep Renegade from 2015 to 2020, this kit ensures a proper seal for your vacuum pump, helping maintain engine efficiency. It also fits the Alfa Romeo Mito from 2012 to 2013, so you can keep your car running smoothly. For Dodge Dart owners from 2013 to 2016, this kit provides a reliable replacement solution. Additionally, if you own a Fiat 500X, 500L, 124 Spider, or 500 from various years between 2012 and 2020, this kit offers a convenient fix to keep your vacuum pump in top condition. Using this kit helps you avoid costly repairs and keeps your car performing well.

9.1

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What We Like

Wide vehicle compatibility
Reliable vacuum pump sealing
Easy maintenance solution
Suitable for multiple Fiat models

#TOP 8

Fill-Rite KIT120SL Shaft Seal Kit

Fill-Rite
KIT120SL
Factory
One Size

Fill-Rite KIT120SL Kit, Shaft Seal Small Pumps (600, 1200, 2400, 4200, 4400 Series)

The Fill-Rite KIT120SL Shaft Seal Kit is an automatic transaxle pump seal kit that comes with instructions and washers. The kit can be used for small pumps from the 600 to 4400 series depending on your pump's age. Made in China, it contains one unit per kit.

8.9

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What We Like

Comes with instructions and washers
Can be used for small pumps from 600 to 4400 series
Contains one unit per kit

#TOP 9

Jetuplusllc Vacuum Pump Seal Kit for Fiat Jeep 1.3L 1.4L

Jetuplusllc

Jetuplusllc Vacuum Pump Rebuild Seal Kit Compatible with Fiat, Jeep 1.4L 1.3L Engines 68120415AA 55233645

The Jetuplusllc Vacuum Seal Kit is designed specifically for Fiat and Jeep engines with 1.3L and 1.4L capacities. This kit includes a main front seal for the vacuum pump, which helps prevent leaks and ensures your engine runs smoothly. It also comes with a vacuum port O-ring that provides a tight seal for better performance. Additionally, the graphite-coated rear crush gasket included in the kit enhances durability and helps maintain a secure fit. With these components, you can keep your vacuum pump well-sealed and functioning properly, saving you time and potential repair costs.

8.9

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What We Like

Engine-specific compatibility
Main vacuum pump seal
Vacuum port O-ring included
Durable graphite-coated gasket

#TOP 10

Allison Transmission Tube Seal

Allison Transmission
29546229

Allison Transmission 29546229 Transmission Tube Seal

The Allison Transmission Tube Seal is an auto part made in the United States. It is an automatic transmission pump seal that weighs 0.2 oz. This product is ideal for those who are looking for a replacement part for their automatic transaxle pump seals.

8.7

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What We Like

High-quality auto part
Made in the United States
Lightweight

Frequently Asked Questions (FAQs)

1. Can a leaking transmission pump seal be replaced without removing the transmission?

Unfortunately, replacing a leaking transmission pump seal typically requires removing the transmission, which can be a costly and time-consuming job. However, if removing the transmission is not feasible or practical, you can try using a transmission sealer product like BlueDevil Transmission Sealer to restore the seal and stop the leak.

2. What causes a transmission pump seal to leak?

A transmission pump seal may start leaking due to a lack of lubrication. When the seal does not have enough fluid to lubricate the materials around the shaft, it can become dry, leading to increased friction and heat. This can cause the seal to burn, melt, or become damaged, resulting in fluid leakage under pressure.

3. How much does it cost to replace a transmission seal?

The cost of replacing a transmission seal, specifically the rear transmission seal or rear main seal, can range from $600 to $900. The cost may vary depending on factors such as your location and the type of vehicle you have. This seal is located between the engine and transmission, sealing the crankshaft and preventing oil leaks.

4. Can you drive with a bad transmission seal?

While it may be technically safe to drive with a leaking transmission seal, it is not advisable to do so. Ignoring the problem and not fixing the seal can lead to further damage and potentially more expensive repairs in the future. It is recommended to address the issue promptly to prevent any complications.

5. What happens when a transmission seal goes bad?

When a transmission seal fails, it can lead to fluid leaks that can cause significant damage to the transmission. These leaks can result in fluid loss, increased friction, and overheating, ultimately leading to transmission failure. Despite their small size, transmission seal and gasket failures can have severe consequences for the overall functioning of the transmission.

6. Are transmission seals easy to replace?

Replacing transmission seals can vary in difficulty. While many seals are inexpensive and relatively easy to replace, some may be located in hard-to-reach areas that require extensive dismantling of components or even removing the entire transmission. It is generally recommended to seek professional help from a garage or mechanic for replacing transmission seals, especially those in more challenging locations.

Editor's Notes

During our automatic transmission pump seals seal research, we found 24 automatic transmission pump seals seal products and shortlisted 10 quality products. We collected and analyzed 12,681 customer reviews through our big data system to write the automatic transmission pump seals seals list. We found that most customers choose automatic transmission pump seals seals with an average price of $13.78.

The automatic transmission pump seals seals are available for purchase. We have researched hundreds of brands and picked the top brands of automatic transmission pump seals seals, including GM GENUINE PARTS, BlueDevil Products, RKX, Hydro-Gear, Honda. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by

Robert Reyes

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.