1990 Mercury Grand Marquis Performance Transmissions

Keep Your 1990 Mercury Grand Marquis in Top Shape with Quality Performance Transmissions

Whether you’re repairing or upgrading your Performance Transmission, using high-quality parts is key to keeping your 1990 Mercury Grand Marquis looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Transmission Shift Kits and Performance Engine and Transmission Mounts. 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 Grand Marquis Performance Transmission at Advance Auto Parts is around $226.99, with a range that starts at $208.99 and goes up to $244.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Motor Mount start at just $244.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Transmission, don’t forget to check out other key components like Performance Distributors and Performance Ignition Products. At Advance Auto Parts, we’re here to help you keep your 1990 Mercury Grand Marquis in peak condition, inside and out.

Essential 1990 Mercury Grand Marquis Performance Transmissions

B & M – Shift Improver Kit (Part No.40266)

Shift Improver Kit

from

$199.99
Shift Improver Kit – 1996 to 1999 Ford, Lincoln, Mercury 4R70W Application: 1996 to 1999 Ford, Lincoln, Mercury 4R70W 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 Application: 1996 to 1999 Ford, Lincoln, Mercury 4R70W 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:
  • 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
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B & M – Transpak (Part No.50229)

Transpak

from

$149.99
Transpak – 1970 to 1982 Ford, Lincoln, Mercury C4 Recalibrate your automatic transmission for optimum performance Select the mode that best suits your application Improves transmission life Transmission removal not required APPLICATION: 1970 to 1982 Ford,

Product Features:
  • Recalibrate Auto. Transmission
  • Optimum Performance
  • Select Your App. Mode
  • Improves Transmission Life
  • Trans. Removal Not Required
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B & M – Transmission Shift Kit (Part No.40227)

Transmission Shift Kit

from

$208.99
Transpak – Ford, Lincoln, Mercury – 1980 to 1992 AOD (excludes 1992 and later with electronic shift). Recalibrate your automatic transmission for optimum performance. Select the mode that best suits your application. Improves transmission life. Transmission removal not required. The next step up from the Shift Improver Kit is the Transpak. It has all the features in the Shift Improver Kit plus it provides additional driver manual control (GM TH-400, 350, Ford C-6 and Chrysler Torqueflite only). Most stock automatic transmissions won’t downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you’re in. With the Transpak, you can downshift at any speed, and you can hold the transmission in first gear to any speed that you want! This is an asset when you’ve got a modified engine, and you want additional RPMs, or you’re towing a trailer or driving heavy loads downhill. Stage 1 Heavy Duty – For street rods, normal passenger vehicles or other heavy duty use. Firmer shift feel but not harsh. Improves transmission performance and life dramatically without loss of comfort. Normal automatic operation when in Drive. Stage 2 Hi-Performance Street – For full performance street use. Essentially the same as Heavy Duty mode except shift is much quicker. Retain full automatic features and standard shift points with selector in Drive.

Product Features:
  • Recalibrate Auto. Transmission
  • Optimum Performance
  • Select Your App. Mode
  • Improves Transmission Life
  • Trans. Removal Not Required
  • Downshift At Any Speed
  • Great For Trailer Towing
  • For Heavy Loads Driving Downhill
See More

B & M – Shift Improver Kit, 67-91 C6 Transmission (Part No.40262)

Shift Improver Kit, 67-91 C6 Transmission

from

$77.99
The B&M Shift Improver kit, is the easiest way to get the performance you want out of your transmission. A few simple modifications and your transmission will shift fast, firm and live longer.

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
See More

Energy Suspension – Motor Mount (Part No.4.1122G)

Motor Mount

from

$244.99
A true performance application component for cars, trucks, hot rods and racing/competition vehicles – yet designed to be also used for street vehicles. Soft-running enough to absorb vibrations for street use yet rugged for racing use. When required- a torque resistant safety interlock design is used that is comparable in strength to those too hard-running metal mounts. Replaces the original, short lived and typically too-soft rubber mounts and outdates those hard-running metal motor mounts. The popular early style mounts for General Motors vehicles are available in either zinc or chrome metal finishes. Made of Hyper-Flex performance polyurethane. Resistant to under vehicle fluids such as: oils, coolants, road contaminants, etc.

Product Features:
  • Gains Both Performance and Longevity
  • Will Handle Any and All Torque
  • Out Lasts Rubber
See More

Most Popular Performance Transmission Shift Kit for 1990 Mercury Grand Marquis

Enhance your 1990 Mercury Grand Marquis with this popular Performance Transmission Shift Kit we have in stock, for $208.99.

B & M – Transmission Shift Kit (Part No.40227)

Transmission Shift Kit

from

$208.99
Transpak – Ford, Lincoln, Mercury – 1980 to 1992 AOD (excludes 1992 and later with electronic shift). Recalibrate your automatic transmission for optimum performance. Select the mode that best suits your application. Improves transmission life. Transmission removal not required. The next step up from the Shift Improver Kit is the Transpak. It has all the features in the Shift Improver Kit plus it provides additional driver manual control (GM TH-400, 350, Ford C-6 and Chrysler Torqueflite only). Most stock automatic transmissions won’t downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you’re in. With the Transpak, you can downshift at any speed, and you can hold the transmission in first gear to any speed that you want! This is an asset when you’ve got a modified engine, and you want additional RPMs, or you’re towing a trailer or driving heavy loads downhill. Stage 1 Heavy Duty – For street rods, normal passenger vehicles or other heavy duty use. Firmer shift feel but not harsh. Improves transmission performance and life dramatically without loss of comfort. Normal automatic operation when in Drive. Stage 2 Hi-Performance Street – For full performance street use. Essentially the same as Heavy Duty mode except shift is much quicker. Retain full automatic features and standard shift points with selector in Drive.

Product Features:
  • Recalibrate Auto. Transmission
  • Optimum Performance
  • Select Your App. Mode
  • Improves Transmission Life
  • Trans. Removal Not Required
  • Downshift At Any Speed
  • Great For Trailer Towing
  • For Heavy Loads Driving Downhill
See More

Best-Selling 1990 Mercury Grand Marquis Performance Engine and Transmission Mount

Upgrade your Grand Marquis with our best-selling Performance Engine and Transmission Mount.

Energy Suspension – Motor Mount (Part No.4.1122G)

Motor Mount

from

$244.99
A true performance application component for cars, trucks, hot rods and racing/competition vehicles – yet designed to be also used for street vehicles. Soft-running enough to absorb vibrations for street use yet rugged for racing use. When required- a torque resistant safety interlock design is used that is comparable in strength to those too hard-running metal mounts. Replaces the original, short lived and typically too-soft rubber mounts and outdates those hard-running metal motor mounts. The popular early style mounts for General Motors vehicles are available in either zinc or chrome metal finishes. Made of Hyper-Flex performance polyurethane. Resistant to under vehicle fluids such as: oils, coolants, road contaminants, etc.

Product Features:
  • Gains Both Performance and Longevity
  • Will Handle Any and All Torque
  • Out Lasts Rubber
See More

FAQs for 1990 Mercury Grand Marquis Performance Transmissions

What are the best-selling Performance Transmissions for 1990 Mercury Grand Marquis?

Out of 2 Performance Transmissions that fit 1990 Mercury Grand Marquis, the following parts are the top sellers:

What’s the price range for 1990 Mercury Grand Marquis Performance Transmissions?

The prices of Performance Transmissions for the 1990 Mercury Grand Marquis range from $208.99 up to $244.99 for the most premium parts.

What is the average price of a Performance Transmission for a 1990 Mercury Grand Marquis?

The average price for Performance Transmissions for the 1990 Mercury Grand Marquis is $226.99. Keep in mind the variety of part types within our Performance Transmission category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Transmissions for other Mercury Grand Marquis model years?

Yes, we carry Performance Transmissions for 20 model years of Mercury Grand Marquis between 1975 and 1999. The following model years are the most popular for Performance Transmission purchases: 1992, 1991, 1989, 1988, 1987, 1986, 1985, 1984, and 1983.

What are the cheapest Performance Transmissions for my 1990 Mercury Grand Marquis?

The cheapest 1990 Mercury Grand Marquis Performance Transmissions we carry are:

Does Advance Auto Parts sell Performance Transmissions for any other 1990 Mercury models?

Yes. We stock Performance Transmissions for 1 other popular 1990 Mercury models. Some of the most popular are 1990 Cougar Performance Transmissions and 1990 Colony Park Performance Transmissions.

What are the top-rated Performance Transmissions that fit the 1990 Mercury Grand Marquis?

The one 1990 Mercury Grand Marquis Performance Transmission we have in stock is the Transmission Shift Kit. It is rated 1 stars and costs $208.99.

What types of Performance Transmissions do you sell for my 1990 Mercury Grand Marquis?

As of 11/2/25, these are some of the most in-demand types of Performance Transmissions for a 1990 Mercury Grand Marquis:

Can I get help with 1990 Mercury Grand Marquis Performance Transmission orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Performance Transmissions and more.

What is your return policy for Mercury Grand Marquis Performance Transmissions?

Advance Auto Parts keeps returns simple. For new Mercury Grand Marquis Performance Transmissions and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.