1990 Mercury Cougar Automatic Transmission Kits
Keep Your 1990 Mercury Cougar in Top Shape with Quality Automatic Transmission Kits
Whether you’re repairing or upgrading your Automatic Transmission Kit, using high-quality parts is key to keeping your 1990 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transmission Shift Kits and Transmission Master Repair Kits. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1990 Mercury Cougar Automatic Transmission Kit at Advance Auto Parts is around $195.99, with a range that starts at $102.99 and goes up to $369.99. With 4 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like AT SHIFT KIT, AT MASTER REPAIR KIT, and Automatic Transmission Basic Rebuild Kit start at just $102.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Automatic Transmission Kit, don’t forget to check out other key components like Manual Transmission Kits and Torque Converter and Related Products. At Advance Auto Parts, we’re here to help you keep your 1990 Mercury Cougar in peak condition, inside and out.
Find Your Specific 1990 Mercury Cougar Automatic Transmission Kits
Looking for the perfect Automatic Transmission Kit for your 1990 Mercury Cougar? You’re in the right place. Below, you’ll find links to various types of Automatic Transmission Kits that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Automatic Transmission Kits, ensuring durability and a precise fit for your Mercury Cougar. Whether you’re driving a 1990 model or another popular model year like
1993,
1994,
1995,
1996,
1997,
1999,
2000,
2001, and
2002, we’ve got you covered. Purchasing Automatic Transmission Kits from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Automatic Transmission Kits that fit your vehicle.
Essential 1990 Mercury Cougar Automatic Transmission Kits
ATP – AT SHIFT KIT (Part No.LK-1)
from
$102.99
AT SHIFT KIT
B & M – Shift Improver Kit (Part No.50260)
from
$83.99
Shift Improver Kit – 1967 to 1969 Ford, Lincoln, Mercury C4 Application: 1967 to 1969 Ford, Lincoln, Mercury C4 Recalibrate your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance you’ve always wanted out of your automatic transmission – and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit. All you need are some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Ask the thousands of satisfied customers that have installed one in their transmissions! STAGE 1. HEAVY DUTY Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles. STAGE 2. STREET/STRIP Provides positive shifts for high performance street use or for competitive events. This level is for the enthusiast who wants the hardest, quickest possible shift.
Product Features:
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Product Features:
- Provides Crisp Shifts
- On Any Stock Automatic Transmission
- Eliminates Soft/Sluggish Shift
- Eliminates Shift Overlap
- Eliminate Clutch and Band Wear
- Improves Transmission Life
- Transmission Removal Not Required
B & M – Transkit (Part No.50231)
from
$449.99
The B&M Transkit includes the same quality components used in a B&M street strip transmission, in a do it yourself kit. Our Transpak is included giving improved shift feel, while still retaining full automatic function.
Product Features:
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Product Features:
- High Perf. Friction Materials
- Complete Overhaul Gasket Set
- Modification Components
- Replacement Valves
- Replacement Springs
- Drain Plug Kit Included
B & M – Shift Improver Kit (Part No.50262)
from
$83.99
Shift Improver Kit – 1970 to 1982 Ford, Lincoln, Mercury C4 Application: 1970 to 1982 Ford, Lincoln, Mercury C4 Recalibrate your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance you’ve always wanted out of your automatic transmission – and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit. All you need are some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Ask the thousands of satisfied customers that have installed one in their transmissions! STAGE 1. HEAVY DUTY Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles. STAGE 2. STREET/STRIP Provides positive shifts for high performance street use or for competitive events. This level is for the enthusiast who wants the hardest, quickest possible shift.
Product Features:
See More
Product Features:
- Provides Crisp Shifts
- On Any Stock Automatic Transmission
- Eliminates Soft/Sluggish Shift
- Eliminates Shift Overlap
- Eliminate Clutch and Band Wear
- Improves Transmission Life
- Transmission Removal Not Required
ATP – AT SHIFT KIT (Part No.FK-6)
from
$72.99
AT SHIFT KIT
B & M – Shift Improver Kit (Part No.40264)
from
$199.99
Shift Improver Kit – 1992 to 1995 Ford, Lincoln, Mercury AODE/4R70W Application: 1992 to 1995 Ford, Lincoln, Mercury AODE/4R70W Recalibrate your automatic transmission for optimum performance and extended life! Provides crisp shifts on any stock automatic transmissions. Elimination of soft sluggish shifts, shift overlap, and excess wear on clutches and bands due to slippage. Improves transmission life. Transmission removal not required. The B&M Shift Improver Kit the easiest way to get the stout performance you’ve always wanted out of your automatic transmission – and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit. All you need are a few dollars and some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Just ask the thousands of satisfied customers that have installed one in their transmissions! Stage 1 – Heavy Duty Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles. Stage 2 – Street/Strip Provides very positive shifts for high performance street use or for competitive events. This model is for the enthusiast who wants the hardest, quickest possible shift.
Product Features:
See More
Product Features:
- Provides Crisp Shifts
- On Any Stock Automatic Transmission
- Eliminates Soft/Sluggish Shift
- Eliminates Shift Overlap
- Eliminate Clutch and Band Wear
B & M – Transpak, 67-91 C6 Transmission (Part No.40228)
from
$174.99
Use the B&M Transpak to recalibrate your automatic transmission for optimum performance. With the Transpak you will be able to downshift into low at any speed, and keep it in low to any speed that you want.
Product Features:
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Product Features:
- Recalibrate Auto. Transmission
- Optimum Performance
- Select Your App. Mode
- Improves Transmission Life
- Trans. Removal Not Required
ATP – AT MASTER REPAIR KIT (Part No.LM-9)
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$496.99
AT MASTER REPAIR KIT
ATP – AT MASTER REPAIR KIT (Part No.FM-32)
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$177.99
AT MASTER REPAIR KIT
ATP – AT MASTER REPAIR KIT (Part No.FM-22)
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$156.99
AT MASTER REPAIR KIT
ATP – AT MASTER REPAIR KIT (Part No.FM-45)
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$388.99
AT MASTER REPAIR KIT
ATP – AT MASTER REPAIR KIT (Part No.LM-4)
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$321.99
AT MASTER REPAIR KIT
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-13)
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$148.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Include steels, frictions, gaskets, and filter
- Includes Band and Modulator (if applicable)
ATP – AT MSTR REP KIT PLUS (Part No.LMS-4)
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$369.99
AT MSTR REP KIT PLUS
ATP – AT MSTR REP KIT PLUS (Part No.LMS-12)
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$432.99
AT MSTR REP KIT PLUS
ATP – AT MASTER REPAIR KIT (Part No.FM-29)
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$246.99
AT MASTER REPAIR KIT
ATP – AT MSTR REP KIT PLUS (Part No.FMS-24)
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$193.99
AT MSTR REP KIT PLUS
Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-834)
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$71.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Does not include steels or filter
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-94)
from
$206.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Include steels, frictions, gaskets, and filter
- Includes Band and Modulator (if applicable)
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-86)
from
$178.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Include steels, frictions, gaskets, and filter
- Includes Band and Modulator (if applicable)
ATP – AT MASTER REPAIR KIT (Part No.LM-14)
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$349.99
AT MASTER REPAIR KIT
ATP – AT MASTER REPAIR KIT (Part No.FM-23)
from
$174.99
AT MASTER REPAIR KIT
Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-868)
from
$138.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Does not include steels or filter
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-14)
from
$212.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Include steels, frictions, gaskets, and filter
- Includes Band and Modulator (if applicable)
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-100)
from
$340.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Include steels, frictions, gaskets, and filter
- Includes Band and Modulator (if applicable)
Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-822)
from
$62.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Does not include steels or filter
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-16)
from
$259.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Include steels, frictions, gaskets, and filter
- Includes Band and Modulator (if applicable)
Popular 1990 Mercury Cougar Automatic Transmission Kits Categories
Most Popular Transmission Shift Kit for 1990 Mercury Cougars
Enhance your 1990 Mercury Cougar with this popular Transmission Shift Kit we have in stock, for $102.99.
ATP – AT SHIFT KIT (Part No.LK-1)
from
$102.99
AT SHIFT KIT
Best-Selling 1990 Mercury Cougar Transmission Master Repair Kits
Upgrade your Cougar with one of our 3 best-selling Transmission Master Repair Kits.
ATP – AT MSTR REP KIT PLUS (Part No.LMS-4)
from
$369.99
AT MSTR REP KIT PLUS
ATP – AT MASTER REPAIR KIT (Part No.LM-4)
from
$321.99
AT MASTER REPAIR KIT
Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-868)
from
$138.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
See More
Product Features:
- Does not include steels or filter
FAQs for 1990 Mercury Cougar Automatic Transmission Kits
What are the best-selling Automatic Transmission Kits for 1990 Mercury Cougars?
Out of 4 Automatic Transmission Kits that fit 1990 Mercury Cougars, the following parts are the top sellers:
- AT SHIFT KIT (11239166) – $102.99
- AT MASTER REPAIR KIT (11238809) – $321.99
- Automatic Transmission Basic Rebuild Kit (10254284) – $138.99
What’s the price range for 1990 Mercury Cougar Automatic Transmission Kits?
The prices of Automatic Transmission Kits for the 1990 Mercury Cougar range from $102.99 up to $369.99 for the most premium parts.
What is the average price of an Automatic Transmission Kit for a 1990 Mercury Cougar?
The average price for Automatic Transmission Kits for the 1990 Mercury Cougar is $195.99. Keep in mind the variety of part types within our Automatic Transmission Kit category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Automatic Transmission Kits for other Mercury Cougar model years?
What are the cheapest Automatic Transmission Kits for my 1990 Mercury Cougar?
The cheapest 1990 Mercury Cougar Automatic Transmission Kits we carry are:
- AT SHIFT KIT (11239166) – $102.99
- Automatic Transmission Basic Rebuild Kit (10254284) – $138.99
- AT MASTER REPAIR KIT (11238809) – $321.99
- AT MSTR REP KIT PLUS (11238795) – $369.99
Does Advance Auto Parts sell Automatic Transmission Kits for any other 1990 Mercury models?
Yes. We stock Automatic Transmission Kits for 1 other popular 1990 Mercury models. Some of the most popular are 1990 Grand Marquis Automatic Transmission Kits and 1990 Colony Park Automatic Transmission Kits.
What types of Automatic Transmission Kits do you sell for my 1990 Mercury Cougar?
As of 11/2/25, these are some of the most in-demand types of Automatic Transmission Kits for a 1990 Mercury Cougar:
Can I get help with 1990 Mercury Cougar Automatic Transmission Kit orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Automatic Transmission Kits and more.
What is your return policy for Mercury Cougar Automatic Transmission Kits?
Advance Auto Parts keeps returns simple. For new Mercury Cougar Automatic Transmission Kits and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.