1981 Checker Marathon Automatic Transmission Kits
Keep Your 1981 Checker Marathon 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 1981 Checker Marathon looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transmission Shift Kits, Transmission Rebuild 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 1981 Checker Marathon Automatic Transmission Kit at Advance Auto Parts is around $168.70, with a range that starts at $72.99 and goes up to $368.99. With 7 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like AT MSTR REP KIT PLUS, AT MASTER REPAIR KIT, and AT BANNER KIT start at just $168.99 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 Automatic Transmission Parts and Torque Converter and Related Products. At Advance Auto Parts, we’re here to help you keep your 1981 Checker Marathon in peak condition, inside and out.
Find Your Specific 1981 Checker Marathon Automatic Transmission Kits
Looking for the perfect Automatic Transmission Kit for your 1981 Checker Marathon? 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 Checker Marathon. Whether you’re driving a 1981 model or another popular model year like
1973,
1974,
1975,
1976,
1977,
1978,
1979,
1980, and
1982, 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 1981 Checker Marathon Automatic Transmission Kits
ATP – AT SHIFT KIT (Part No.JK-1)
from
$75.99
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 – 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
ATP – AT MASTER REPAIR KIT (Part No.JM-9)
from
$253.99
AT MASTER REPAIR KIT
Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-15)
from
$222.99
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.JMS-9)
from
$368.99
AT MSTR REP KIT PLUS
Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-828)
from
$93.99
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
ATP – AT MASTER REPAIR KIT (Part No.FM-22)
from
$156.99
AT MASTER REPAIR KIT
ATP – AT OVERHAUL KIT (Part No.JGS-52)
from
$76.99
AT OVERHAUL KIT
ATP – AT BANNER KIT (Part No.JM-10)
from
$168.99
AT BANNER KIT
Popular 1981 Checker Marathon Automatic Transmission Kits Categories
Most Popular Transmission Shift Kits for 1981 Checker Marathons
Enhance your 1981 Checker Marathon with one of the 3 Transmission Shift Kits we have in stock, starting at just $72.99.
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
ATP – AT SHIFT KIT (Part No.JK-1)
from
$75.99
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
Best-Selling 1981 Checker Marathon Transmission Rebuild Kits
Upgrade your Marathon with one of our 2 best-selling Transmission Rebuild Kits.
ATP – AT BANNER KIT (Part No.JM-10)
from
$168.99
AT BANNER KIT
ATP – AT OVERHAUL KIT (Part No.JGS-52)
from
$76.99
AT OVERHAUL KIT
Top-Quality Transmission Master Repair Kits for 1981 Checker Marathons
Choose a high-quality OEM or aftermarket Transmission Master Repair Kit for Checker Marathons and enjoy top-notch performance from $253.99.
ATP – AT MSTR REP KIT PLUS (Part No.JMS-9)
from
$368.99
AT MSTR REP KIT PLUS
ATP – AT MASTER REPAIR KIT (Part No.JM-9)
from
$253.99
AT MASTER REPAIR KIT
FAQs for 1981 Checker Marathon Automatic Transmission Kits
What are the best-selling Automatic Transmission Kits for 1981 Checker Marathons?
Out of 7 Automatic Transmission Kits that fit 1981 Checker Marathons, the following parts are the top sellers:
- AT MSTR REP KIT PLUS (11238803) – $368.99
- AT MASTER REPAIR KIT (11238799) – $253.99
- AT BANNER KIT (11238675) – $168.99
What’s the price range for 1981 Checker Marathon Automatic Transmission Kits?
The prices of Automatic Transmission Kits for the 1981 Checker Marathon range from $72.99 up to $368.99 for the most premium parts.
What is the average price of an Automatic Transmission Kit for a 1981 Checker Marathon?
The average price for Automatic Transmission Kits for the 1981 Checker Marathon is $168.70. 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 Checker Marathon model years?
What are the cheapest Automatic Transmission Kits for my 1981 Checker Marathon?
The cheapest 1981 Checker Marathon Automatic Transmission Kits we carry are:
- Shift Improver Kit For 65-87 TH400 Transmission (6121209) – $72.99
- AT SHIFT KIT (11239173) – $75.99
- AT OVERHAUL KIT (11238741) – $76.99
- Transpak For 65-87 TH400 Transmission (17130002) – $162.99
- AT BANNER KIT (11238675) – $168.99
What types of Automatic Transmission Kits do you sell for my 1981 Checker Marathon?
As of 11/2/25, these are some of the most in-demand types of Automatic Transmission Kits for a 1981 Checker Marathon:
Can I get help with 1981 Checker Marathon 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 Checker Automatic Transmission Kits and more.
What is your return policy for Checker Marathon Automatic Transmission Kits?
Advance Auto Parts keeps returns simple. For new Checker Marathon Automatic Transmission Kits and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.