Chevrolet R20 Automatic Transmission Kits

Your One-Stop Shop For Trusted Chevrolet R20 Automatic Transmission Kits

If you’re in search of Chevrolet R20 Automatic Transmission Kits aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 22 Automatic Transmission Kits from top brands with prices ranging from $15.99 to $665.99.

Beyond great prices, we stock trusted brands manufacturing all types of Automatic Transmission Kits for your Chevrolet R20.

And don’t forget to read customer reviews across all Automatic Transmission Kits categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Automatic Transmission Kits have to cost top dollar, and we prove it. Browse our top Chevrolet R20 Automatic Transmission Kits below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Please Select your Vehicle to See Exact Fit Parts

Essential Chevrolet R20 Automatic Transmission Kits

B & M – Shift Improver Kit, 82-93 TH700R4 (Part No.70239)

Shift Improver Kit, 82-93 TH700R4

from

$86.99
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:
  • 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 For 82-93 TH700R4 Transmission (Part No.70235)

Transpak For 82-93 TH700R4 Transmission

from

$204.99
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:
  • 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
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B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)

Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission

from

$128.99
This kit allows you to adjust the shift points of your transmission after it is installed in your vehicle. The Governor Recalibration Kit is very useful if you have a vehicle that is very light; has a low rear-end gear ratio.

Product Features:
  • Adjust Shift Points Of Transmission
  • Useful For Light Vehicles
  • For Low Rear End Gear Ratio
  • Or Useful If It Is Conversion
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ATP – AT SHIFT KIT (Part No.JK-1)

AT SHIFT KIT

from

$80.99
AT SHIFT KIT

B & M – Shift Improver Kit (Part No.20261)

Shift Improver Kit

from

$83.99
Shift Improver Kit 1988 to 1994 Chevrolet, Buick, Olds, Pontiac, GMC TH-400 (3L80) Application: 1988 to 1994 Chevrolet, Buick, Olds, Pontiac, GMC TH-400 (3L80) Recalibrate your automatic transmission for optimum performance and extended life! Select the m

Product Features:
  • Provides Crisp Shifts
  • On Any Stock Automatic Transmission
  • Eliminates Soft/Sluggish Shift
  • Eliminates Shift Overlap
  • Eliminate Clutch and Band Wear
See More

B & M – Shift Improver Kit For 65-87 TH400 Transmission (Part No.20260)

Shift Improver Kit For 65-87 TH400 Transmission

from

$73.99
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:
  • 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

Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-39)

Automatic Transmission Deluxe Rebuild Kit

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:
  • Include steels, frictions, gaskets, and filter
  • Includes Band and Modulator (if applicable)
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Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-864)

Automatic Transmission Basic Rebuild Kit

from

$125.99
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:
  • Meets or exceeds OE specifications
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Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-40)

Automatic Transmission Deluxe Rebuild Kit

from

$293.99
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:
  • Include steels, frictions, gaskets, and filter
  • Includes Band and Modulator (if applicable)
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Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-828)

Automatic Transmission Basic Rebuild Kit

from

$78.99
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:
  • Meets or exceeds OE specifications
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ATP – AT MSTR REP KIT PLUS (Part No.JMS-9)

AT MSTR REP KIT PLUS

from

$393.99
AT MSTR REP KIT PLUS

ATP – AUTOMATIC TRANS PART (Part No.CMS-23)

AUTOMATIC TRANS PART

from

$376.99
AUTOMATIC TRANS PART

Schaeffler – Shaft Seal (Part No.SS2803)

Shaft Seal

from

$15.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
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ATP – AT OVERHAUL KIT (Part No.JGS-52)

AT OVERHAUL KIT

from

$81.99
AT OVERHAUL KIT

B & M – Transmission Kit, Master Overhaul Kit For TH400 (Part No.21041)

Transmission Kit, Master Overhaul Kit For TH400

from

$459.99
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:
  • Complete High Perf. Or Racing Trans. Overhaul
  • Includes Only OEM Valvebody Gaskets
  • Instructions Not Included
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ATP – AT BANNER KIT (Part No.JM-10)

AT BANNER KIT

from

$179.99
AT BANNER KIT

ATP – AT BANNER KIT (Part No.CM-26)

AT BANNER KIT

from

$221.99
AT BANNER KIT

Automatic Transmission Kits Brands You Can Trust For Your Chevrolet R20

4 trusted brands of Automatic Transmission Kits line our shelves, ready to help keep your Chevrolet R20 running smooth. Below are some of the most popular brands and their top Automatic Transmission Kits offerings:

Popular B & M Automatic Transmission Kits

B & M products for the Chevrolet R20 span several categories. Some of the highest-rated B & M Automatic Transmission Kits that will fit your Chevrolet R20 are:
Shift Improver Kit, 82-93 TH700R4
from $86.99
(3)
Shift Improver Kit, 82-93 TH700R4
Transmission Shift Kits

Top Chevrolet R20 Automatic Transmission Kits from Pro-King

Your Chevrolet R20 will be purring again thanks to Pro-King brand Automatic Transmission Kits available for online order or in-store pick up. Popular Pro-King parts include:
Automatic Transmission Deluxe Rebuild Kit
from $293.99
(5)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Deluxe Rebuild Kit
from $268.99
(1)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Deluxe Rebuild Kit
from $259.99
(1)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits

Most Purchased Chevrolet R20 Automatic Transmission Kits from Pro-King

When you buy the most frequently purchased Pro-King brand Automatic Transmission Kits, you can be confident it will be the right part for your Chevrolet R20. Here are the Pro-King Automatic Transmission Kits Advanced Auto customers buy the most:
Automatic Transmission Deluxe Rebuild Kit
from $293.99
(5)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Deluxe Rebuild Kit
from $268.99
(1)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Basic Rebuild Kit
from $125.99
This product is not rated
Automatic Transmission Basic Rebuild Kit
Transmission Master Repair Kits

FAQs for Chevrolet R20 Automatic Transmission Kits

What are the most purchased Automatic Transmission Kits for the Chevrolet R20?

Out of 22 Automatic Transmission Kits for the Chevrolet R20, the most popular in our inventory are:
Automatic Transmission Basic Rebuild Kit
from $78.99
This product is not rated
Automatic Transmission Basic Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Basic Rebuild Kit
from $125.99
This product is not rated
Automatic Transmission Basic Rebuild Kit
Transmission Master Repair Kits
AT BANNER KIT
from $179.99
This product is not rated
AT BANNER KIT
Transmission Rebuild Kits