1966 Cadillac Calais Automatic Transmission Parts

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Keep Your 1966 Cadillac Calais in Top Shape with Quality Automatic Transmission Parts

Whether you’re repairing or upgrading your Automatic Transmission Part, using high-quality parts is key to keeping your 1966 Cadillac Calais looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transmission Modulator Valves, Automatic Transmission Oil Pump O-Rings, and Transmission Bushings. 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 1966 Cadillac Calais Automatic Transmission Part at Advance Auto Parts is around $45.21, with a range that starts at $9.59 and goes up to $128.99. With 10 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Automatic Transmission Oil Pump O-Ring, AT MODULATOR VALVE, and AT MODULATOR VALVE start at just $9.59 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Automatic Transmission Part, don’t forget to check out other key components like Torque Converter and Related Products and Transmission Cooler and Parts. At Advance Auto Parts, we’re here to help you keep your 1966 Cadillac Calais in peak condition, inside and out.

Essential 1966 Cadillac Calais Automatic Transmission Parts

ATP – Automatic Transmission Band (Front) (Part No.JX-58)

Automatic Transmission Band (Front)

from

$29.99
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – Automatic Transmission Oil Pump O-Ring (Part No.SO-21)

Automatic Transmission Oil Pump O-Ring

from

$9.59
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
See More

B & M – Kickdown Switch Kit For TH400 Transmission (Part No.20297)

Kickdown Switch Kit For TH400 Transmission

from

$99.99
When swapping the TH400 transmission into any vehicle, this kit makes installation of the transmission’s kickdown feature a snap. This switch mounts to either a TH700R4, TH200, TH200-R4 or TH350 throttle cable bracket.

Product Features:
  • Allows High Speed Cruise
  • Cruise In Overdrive
  • Prevents Part Throttle Kickdown
  • Quick Installation
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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
See More

ATP – AT MODULATOR VALVE (Part No.JX-66)

AT MODULATOR VALVE

from

$21.99
AT MODULATOR VALVE

ATP – AT MODULATOR VALVE (Part No.JX-76)

AT MODULATOR VALVE

from

$51.99
AT MODULATOR VALVE

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-28)

Automatic Transmission Vacuum Modulator

from

$33.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE specifications
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B & M – Modulator (Part No.20234)

Modulator

from

$49.99
B&M’s vacuum modulator is fully adjustable, this allows you to tailor your shift points to within a range of 2-4 mph. Comes preadjusted for normal shift points. For TH350 and TH400.

Product Features:
  • Fully Adjustable
  • Allows You To Tailor Shift Points
  • Comes Supplied Pre-Adjusted
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Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)

Automatic Transmission Vacuum Modulator

from

$21.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
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ATP – Automatic Transmission Front Pump Bushing (Part No.CB-4)

Automatic Transmission Front Pump Bushing

from

$11.79
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – Automatic Transmission Clutch Plate (Part No.JC-57)

Automatic Transmission Clutch Plate

from

$13.79
ATP Transmission Components are exact fit, no compromise replacement parts
See More

B & M – Cable Bracket (Part No.30498)

Cable Bracket

from

$33.99
Cable Bracket, GM (Bandit style shifters only) APPLICATION: For TH-400, 350, 250, 200, 700R4, 200-4R with 80797, 80798 or 81050 shifter.

Product Features:
  • Shifter Service Parts
  • Steel
  • Natural Finish
  • Sold individually
  • Replacement for Bandit shifters
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Most Popular Transmission Modulator Valves for 1966 Cadillac Calais

Enhance your 1966 Cadillac Calais with one of the 3 Transmission Modulator Valves we have in stock, starting at just $21.99.

B & M – Modulator (Part No.20234)

Modulator

from

$49.99
B&M’s vacuum modulator is fully adjustable, this allows you to tailor your shift points to within a range of 2-4 mph. Comes preadjusted for normal shift points. For TH350 and TH400.

Product Features:
  • Fully Adjustable
  • Allows You To Tailor Shift Points
  • Comes Supplied Pre-Adjusted
See More

ATP – AT MODULATOR VALVE (Part No.JX-76)

AT MODULATOR VALVE

from

$51.99
AT MODULATOR VALVE

ATP – AT MODULATOR VALVE (Part No.JX-66)

AT MODULATOR VALVE

from

$21.99
AT MODULATOR VALVE

Best-Selling 1966 Cadillac Calais Automatic Transmission Oil Pump O-Ring

Upgrade your Calais with our best-selling Automatic Transmission Oil Pump O-Ring.

ATP – Automatic Transmission Oil Pump O-Ring (Part No.SO-21)

Automatic Transmission Oil Pump O-Ring

from

$9.59
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
See More

Top-Quality Transmission Bushings for 1966 Cadillac Calais

Choose a high-quality OEM or aftermarket Transmission Bushing for Cadillac Calais and enjoy top-notch performance from $11.79.

ATP – Automatic Transmission Front Pump Bushing (Part No.CB-4)

Automatic Transmission Front Pump Bushing

from

$11.79
ATP Transmission Components are exact fit, no compromise replacement parts
See More

Our Top Pick for a 1966 Cadillac Calais Transmission Band

Invest in a durable Transmission Band for your 1966 Cadillac, knowing you’re getting trusted brands and expert craftsmanship.

ATP – Automatic Transmission Band (Front) (Part No.JX-58)

Automatic Transmission Band (Front)

from

$29.99
ATP Transmission Components are exact fit, no compromise replacement parts
See More

Our Automatic Transmission Governors for 1966 Cadillac Calais

Make a smart move for your 1966 Cadillac Calais with our Automatic Transmission Governor for $128.99.

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
See More

FAQs for 1966 Cadillac Calais Automatic Transmission Parts

What are the best-selling Automatic Transmission Parts for 1966 Cadillac Calais?

Out of 10 Automatic Transmission Parts that fit 1966 Cadillac Calais, the following parts are the top sellers:

What’s the price range for 1966 Cadillac Calais Automatic Transmission Parts?

The prices of Automatic Transmission Parts for the 1966 Cadillac Calais range from $9.59 up to $128.99 for the most premium parts.

What is the average price of an Automatic Transmission Part for a 1966 Cadillac Calais?

The average price for Automatic Transmission Parts for the 1966 Cadillac Calais is $45.21. Keep in mind the variety of part types within our Automatic Transmission Part 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 Parts for other Cadillac Calais model years?

Yes, we carry Automatic Transmission Parts for 10 model years of Cadillac Calais between 1965 and 1976. The following model years are the most popular for Automatic Transmission Part purchases: 1976, 1975, 1974, 1973, 1972, 1971, 1970, 1969, and 1968.

What are the cheapest Automatic Transmission Parts for my 1966 Cadillac Calais?

The cheapest 1966 Cadillac Calais Automatic Transmission Parts we carry are:

Does Advance Auto Parts sell Automatic Transmission Parts for any other 1966 Cadillac models?

Yes. We stock Automatic Transmission Parts for 3 other popular 1966 Cadillac models. Some of the most popular are 1966 DeVille Automatic Transmission Parts, 1966 Eldorado Automatic Transmission Parts, 1966 Fleetwood Automatic Transmission Parts, and 1966 Commercial Chassis Automatic Transmission Parts.

What are the top-rated Automatic Transmission Parts that fit the 1966 Cadillac Calais?

The one 1966 Cadillac Calais Automatic Transmission Part we have in stock is the Automatic Transmission Oil Pump O-Ring. It costs $9.59.

What types of Automatic Transmission Parts do you sell for my 1966 Cadillac Calais?

As of 6/2/26, these are some of the most in-demand types of Automatic Transmission Parts for a 1966 Cadillac Calais:

Can I get help with 1966 Cadillac Calais Automatic Transmission Part 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 Parts and more.

What is your return policy for Cadillac Calais Automatic Transmission Parts?

Advance Auto Parts keeps returns simple. For new Cadillac Calais Automatic Transmission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.