1991 Cadillac DeVille Automatic Transmission Kits
Keep Your 1991 Cadillac DeVille in Top Shape with a Quality Automatic Transmission Kit
When it comes to maintaining or upgrading your 1991 Cadillac DeVille, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Automatic Transmission Kit for your DeVille. We currently carry a top Automatic Transmission Kit in stock that is built to last. Whether you’re replacing a damaged Automatic Transmission Kit or looking to upgrade, our selection for the 1991 Cadillac DeVille ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.
Explore Related Parts
And while you’re here, don’t forget to check out related part categories like Torque Converter and Related Products and Transmission Cooler and Parts to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1991 Cadillac DeVille running smoothly and looking great.
Find Your Specific 1991 Cadillac DeVille Automatic Transmission Kits
Looking for the perfect Automatic Transmission Kit for your 1991 Cadillac DeVille? You’re in the right place. Below, you’ll find a Automatic Transmission Kit from a trusted manufacturer that is a perfect fit for 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 Cadillac DeVille. Whether you’re driving a 1991 model or another popular model year like
1997,
1998,
1999,
2000,
2001,
2002,
2003,
2004, and
2005, 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 1991 Cadillac DeVille Automatic Transmission Kits
B & M – Transpak For 68-81 TH 350 Transmission (Part No.30228)
from
$162.99
The B&M Transpak has all the features in the Shift Improver Kit, plus it provides additional driver manual control. Retain full automatic features and standard shift points with selector in Drive.
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 SHIFT KIT (Part No.SK-2)
from
$189.99
AT SHIFT KIT
B & M – Shift Improver Kit, 82-93 TH700R4 (Part No.70239)
from
$85.99
The B&M Shift Improver Kit the easiest way to get the performance you’ve always wanted out of your automatic transmission, two modes to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit.
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
ATP – AT SHIFT KIT (Part No.SK-3)
from
$102.99
AT SHIFT KIT
B & M – Shift Improver Kit For 65-87 TH400 Transmission (Part No.20260)
from
$72.99
The B&M Shift Improver Kit the easiest way to get the performance you’ve always wanted out of your automatic transmission, two modes to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit.
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
B & M – Transmission Kit, Master Overhaul Kit For TH400 (Part No.21041)
from
$449.99
These kits include all of the necessary components to rebuild your automatic transmission. OEM style gaskets included. Kits do not include overhaul instructions – please refer to factory shop manual for proper assembly procedures.
Product Features:
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Product Features:
- Complete High Perf. Or Racing Trans. Overhaul
- Includes Only OEM Valvebody Gaskets
- Instructions Not Included
B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)
from
$162.99
The B&M Transpak has all the features in the Shift Improver Kit, plus it provides additional driver manual control. Retain full automatic features and standard shift points with selector in Drive.
Product Features:
See More
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
B & M – Transpak (Part No.30235)
from
$174.99
Shift Improver Kits – Buick, Chevrolet, GMC, Olds, Pontiac – 1968 to 1981 TH-350 and M38 Application: 1968 to 1981 TH-350 and M38 (for TH-350C use Transpak # 30235) 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:
- 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
ATP – AT SHIFT KIT (Part No.JK-1)
from
$75.99
AT SHIFT KIT
Popular 1991 Cadillac DeVille Automatic Transmission Kits Categories
Most Popular Transmission Shift Kit for 1991 Cadillac DeVilles
Enhance your 1991 Cadillac DeVille with this popular Transmission Shift Kit we have in stock, for $189.99.
ATP – AT SHIFT KIT (Part No.SK-2)
from
$189.99
AT SHIFT KIT
FAQs for 1991 Cadillac DeVille Automatic Transmission Kits
What’s the price range for 1991 Cadillac DeVille Automatic Transmission Kits?
We currently have just one Automatic Transmission Kits for the 1991 Cadillac DeVille in stock: AT SHIFT KIT and it costs $189.99.
Does Advance Auto Parts sell Automatic Transmission Kits for other Cadillac DeVille model years?
What types of Automatic Transmission Kits do you sell for my 1991 Cadillac DeVille?
We currently have just 1 Automatic Transmission Kit in stock for a 1991 Cadillac DeVille, and as of 11/2/25, it is a Transmission Shift Kit.
Can I get help with 1991 Cadillac DeVille 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 Cadillac Automatic Transmission Kits and more.
What is your return policy for Cadillac DeVille Automatic Transmission Kits?
Advance Auto Parts keeps returns simple. For new Cadillac DeVille Automatic Transmission Kits and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.