1975 GMC P25 Performance Transmissions

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Keep Your 1975 GMC P25 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 1975 GMC P25 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Transmission Dipstick Tubes, Performance Transmission Shift Kits, and Performance Transmission Rebuild 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 1975 GMC P25 Performance Transmission at Advance Auto Parts is around $233.74, with a range that starts at $127.99 and goes up to $511.99. With 4 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Transkit For 65-87 TH400 Transmission, Aluminum Braided Dip Stick, Fits TH-350 Transmission, and Aluminum Braided Dip Stick, Fits TH-400 Transmission start at just $127.99 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 Fuel Systems and Performance Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1975 GMC P25 in peak condition, inside and out.

Essential 1975 GMC P25 Performance Transmissions

B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)

Transpak For 65-87 TH400 Transmission

from

$166.99
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
See More

B & M – Transkit For 65-87 TH400 Transmission (Part No.20229)

Transkit For 65-87 TH400 Transmission

from

$511.99
A B&M transmission in a box! Transform your automatic transmission into a full-tilt B&M performer! This is our ultimate transmission kit – it comes complete with full instructions on how to assemble your transmission to B&M specifications.

Product Features:
  • High Perf. Friction Materials
  • Complete Overhaul Gasket Set
  • Modification Components
  • Replacement Valves
  • Replacement Springs
  • Drain Plug Kit Included
See More

B & M – Aluminum Braided Dip Stick, Fits TH-400 Transmission (Part No.22166)

Aluminum Braided Dip Stick, Fits TH-400 Transmission

from

$127.99
What better way to check you oil level by using one of B&M’s transmission fluid dipsticks? The cap screws into the tube and is O-ring sealed, while the base of the tube has a sealing grommet where it goes into the transmission.

Product Features:
  • Automatic Transmission Dip Stick
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B & M – Aluminum Braided Dip Stick, Fits TH-350 Transmission (Part No.22165)

Aluminum Braided Dip Stick, Fits TH-350 Transmission

from

$127.99
What better way to check you oil level by using one of B&M’s transmission fluid dipsticks? The cap screws into the tube and is O-ring sealed, while the base of the tube has a sealing grommet where it goes into the transmission.

Product Features:
  • Automatic Transmission Dip Stick
  • Mounts to bellhousing
  • Sold as a kit
  • Natural finish
  • Fits TH350 & TH350C
See More

Most Popular Performance Transmission Dipstick Tubes for 1975 GMC P25s

Enhance your 1975 GMC P25 with one of the 2 Performance Transmission Dipstick Tubes we have in stock, starting at just $127.99.

B & M – Aluminum Braided Dip Stick, Fits TH-400 Transmission (Part No.22166)

Aluminum Braided Dip Stick, Fits TH-400 Transmission

from

$127.99
What better way to check you oil level by using one of B&M’s transmission fluid dipsticks? The cap screws into the tube and is O-ring sealed, while the base of the tube has a sealing grommet where it goes into the transmission.

Product Features:
  • Automatic Transmission Dip Stick
See More

B & M – Aluminum Braided Dip Stick, Fits TH-350 Transmission (Part No.22165)

Aluminum Braided Dip Stick, Fits TH-350 Transmission

from

$127.99
What better way to check you oil level by using one of B&M’s transmission fluid dipsticks? The cap screws into the tube and is O-ring sealed, while the base of the tube has a sealing grommet where it goes into the transmission.

Product Features:
  • Automatic Transmission Dip Stick
  • Mounts to bellhousing
  • Sold as a kit
  • Natural finish
  • Fits TH350 & TH350C
See More

Best-Selling 1975 GMC P25 Performance Transmission Shift Kit

Upgrade your P25 with our best-selling Performance Transmission Shift Kit.

B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)

Transpak For 65-87 TH400 Transmission

from

$166.99
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
See More

Top-Quality Performance Transmission Rebuild Kits for 1975 GMC P25s

Choose a high-quality OEM or aftermarket Performance Transmission Rebuild Kit for GMC P25s and enjoy top-notch performance from $511.99.

B & M – Transkit For 65-87 TH400 Transmission (Part No.20229)

Transkit For 65-87 TH400 Transmission

from

$511.99
A B&M transmission in a box! Transform your automatic transmission into a full-tilt B&M performer! This is our ultimate transmission kit – it comes complete with full instructions on how to assemble your transmission to B&M specifications.

Product Features:
  • High Perf. Friction Materials
  • Complete Overhaul Gasket Set
  • Modification Components
  • Replacement Valves
  • Replacement Springs
  • Drain Plug Kit Included
See More

FAQs for 1975 GMC P25 Performance Transmissions

What are the best-selling Performance Transmissions for 1975 GMC P25s?

Out of 4 Performance Transmissions that fit 1975 GMC P25s, the following parts are the top sellers:

What’s the price range for 1975 GMC P25 Performance Transmissions?

The prices of Performance Transmissions for the 1975 GMC P25 range from $127.99 up to $511.99 for the most premium parts.

What is the average price of a Performance Transmission for a 1975 GMC P25?

The average price for Performance Transmissions for the 1975 GMC P25 is $233.74. 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 GMC P25 model years?

Yes, we carry Performance Transmissions for 2 model years of GMC P25s between 1976 and 1978. The following model years are the most popular for Performance Transmission purchases: 1978, 1977, and 1976.

What are the cheapest Performance Transmissions for my 1975 GMC P25?

The cheapest 1975 GMC P25 Performance Transmissions we carry are:

Does Advance Auto Parts sell Performance Transmissions for any other 1975 GMC models?

Yes. We stock Performance Transmissions for 11 other popular 1975 GMC models. Some of the most popular are 1975 Jimmy Performance Transmissions, 1975 K25 Performance Transmissions, 1975 K15 Performance Transmissions, 1975 G25 Performance Transmissions, and 1975 C25 Performance Transmissions.

What types of Performance Transmissions do you sell for my 1975 GMC P25?

As of 3/1/26, these are some of the most in-demand types of Performance Transmissions for a 1975 GMC P25:

Can I get help with 1975 GMC P25 Performance Transmission orders?

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

What is your return policy for GMC P25 Performance Transmissions?

Advance Auto Parts keeps returns simple. For new GMC P25 Performance Transmissions and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.