1975 GMC G25 Transmission Parts

Below you will find various in-demand GMC Transmission Parts, components and accessories for your 1975 G25. Advance Auto Parts has popular G25 parts like Transmission Cooler and Parts, Automatic Transmission Parts, Transmission Mounts and more. You’ll also find aftermarket and OEM Transmission Parts for other G25 model years including 1968, 1976, 1977, 1978 and more. Select a category of 1975 GMC G25 Transmission Parts below and start saving instantly.

Popular 1975 GMC G25 Transmission Parts Categories

Gear Shift Levers

Transmission Torque Converters

OE Transmission Coolers

Transmission Solenoids

Transmission Oil Cooler Lines

Transmission Shift Cables

Automatic Transmission Governors

Countershaft Bearings

Manual Transmission Output Shaft Bearings

Transmission Pan Gaskets

Pinion Bearings

Transmission Mounts

Transmission Master Repair Kits

Transmission Rebuild Kits

Transmission Oil Pan Gaskets

Transmission Dipsticks

Automatic Transmission Differential Bearings

Transmission Bushings

Detent Cables

Transmission Modulator Valves

Pinion Seals

Miscellaneous Shift Shaft Seals

Automatic Transmission Dipstick Seals

Transmission Seals and O-rings

Automatic Transmission Kickdown Cable Brackets

Manual Transmission Bearing and Seal Overhaul Kits

Automatic Transmission Extension Housing Seal Kits

Torque Converter Seals

Extension Housing Seals

Manual Transmission Output Shaft Seals

Manual Transmission Top Gaskets

Miscellaneous Automatic Transmission Seals

Transmission Shift Kits

Manual Transmission Blocking Rings

Automatic Transmission Selector Shaft Seals

Automatic Transmission Flexplate Mounting Bolts

Miscellaneous Transmission Bearings

Shift Shaft Seals

Automatic Transmission Oil Pump Gaskets

Automatic Transmission Fluid Filler Tube Seals

Manual Transmission Seals

Automatic Transmission Oil Pump O-Rings

Automatic Transmission Speedometer Pinion Seals

Automatic Transmission Seals

Automatic Transmission Shifter Cable Brackets

Automatic Transmission Friction Discs

Manual Transmission Bearing

Manual Transmission Output Shaft Seal Kits

Transmission Kick-Down Switch

Manual Transmission Countershaft Bearing Set

Essential Transmission Parts for 1975 GMC G25s

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$22.99

Detent cables connect the throttle mechanism to the transmission. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. ATP Detent cables are designed to fit And function just like the original part to ensure durability And long life.

Product Features:

Includes brackets, grommets, etc to match original
Helps transmission determine ideal downshift
Improves vehicle performance

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$97.99

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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$6.99

AT CLUTCH PLATE

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$111.99

AT CONTR SOLENOID

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$12.99

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

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$83.99

AT OVERHAUL KIT

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$599.99

The Stealth Pro Ratchet shifter is one of our most popular and easiest to operate race shifters. Features include positive ratcheting design that self-centers the handle after each shift giving you maximum clearance behind the shifter and will not allow y

Product Features:

Reverse Lockout Meets NHRA And IHRA Requirements
Carbon Fiber Look Without The Cost
Reliable And Race Proven Shifter Design
Short Throw
Stick Returns to Center

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$23.99

Flywheel and flex plate bolts play an important role in the performance and safety of race cars and street machines alike. That is why the fastener experts at ARP have developed special bolts that are far superior to OEM hardware. ARP offers two styles of flywheel/flex plate bolts: High Performance and Pro Series. They are both forged from aerospace alloy and heat treated prior to thread rolling and machining. Both feature an exclusive, flat, 12 point head design and larger than stock shank diameter for increased strength and improved flywheel register. The popular High Performance series is rated at 180,000 PSI, and the premium grade Pro Series, originally developed for NASCAR competition, has a 200,000 PSI rating. Complete with washers and nuts where applicable.

Product Features:

Forged From Aerospace Alloy And Heat Treated Prior To Thread Rolling And Machining
Feature An Exclusive, Flat, 12 Point Head Design And Larger Than Stock Shank Diameter
Flanged Nut
Increased Strength And Improved Flywheel Register
Chevy 90░ V6 & 305-502 With 1-pc Rear Seal
0.725″ Underhead Length
200,000 PSI

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$5.99

AT SEAL

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$15.99

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

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$124.99

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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$26.99

Made from cork/neoprene gasket material which features excellent compressibility and high recovery to create a positive seal.

Product Features:

High density cork-nitrile rubber blend
Excellent compressibility and high recovery to create a positive seal
Excellent Compressibility

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$19.99

Product Features:

Edelbrock Part # 8026 GM Transmission adapter is for use with 2004R, 700R4, 4L60 transmissions.
This kit relocates the pin position on an Edelbrock Carburetor when hooking up to a throttle valve style transmission (700R4, 2004R, 4L60).
The pin location is critical as the TV controls line pressure, shift points, shift firmness, and part throttle downshifts.

from

$7.29

This clutch pilot bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this clutch pilot bushing matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$299.99

These B&M automatic transmission deep pans provide additional fluid capacity and cooling ability. No modifications to the dipstick are needed. They include a drain plug for clean and easy fluid changes. Adds 3 quarts to the Transmission.

Product Features:

Additional Oil Capacity
More Cooling Ability
No Dipstick Modification
Some Include Fluid Pickup Extension
Built-In Drain Plugs
Cast Aluminum

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$9.79

The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to BUIC 65-74; CHEV 57-84; GMC 67-84; OLDS 64-79; PONT 64-81;. Please verify your application.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 1957-1984
Weight approx: 2 Lbs
HEIGHT: 1.8 INCH: 45.7 MM
ALL BOLT HOLES INLINE
BOLT CENTERLINE: 1.5 INCH: 38.1 MM

from

$5.99

Design type: springless; single-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

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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$10.99

AT OIL PUMP GASKET

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$24.99

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

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$40.99

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

Premium bearing design matches OEM specifications
Precision manufactured using premium-grade steel for outstanding durability and performance
Controlled heat treating process for lasting performance and extended bearing life
Industry leading coverage
Professional technicians know they can depend on National

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$8.99

AT SEL SHAFT SEAL

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$9.99

Design type: spring loaded; single-lip
Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
Resistance to EP lubricants
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$7.99

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$14.99

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

CONSISTENT PERFORMANCE — Matched cup and cone components ensure consistent performance
PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION — Crowned raceways and rollers for even load distribution
OE-STYLE DESIGN — Engineered to meet OE specifications
COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$34.49

Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:

Meets or exceeds OE fit, form and function

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$253.99

AT MASTER REPAIR KIT

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$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:

Does not include steels or filter

Upgrade your 1975 GMC G25 with Top-Quality Transmission Parts

When it comes to maintaining or upgrading your 1975 GMC G25, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Transmission Parts are key to keeping your G25 functioning at its best. At Advance Auto Parts, we offer a wide selection of 139 Transmission Parts for the 1975 GMC G25, designed to meet your needs without breaking the bank. From Transmission Cooler and Part replacements to Automatic Transmission Parts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Transmission Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Transmission Parts for your 1975 GMC G25 at great prices. Our Transmission Parts inventory for this model ranges from just $2.99 to $1,299.99, with an average price of $151.32. Our 139 Transmission Parts in stock come from 17 trusted brands, so you’re sure to find the right part for your 1975 GMC G25 without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1975 GMC G25, we stock popular OEM and aftermarket Transmission Parts from top names like National, B & M, Imperial, and more. National Transmission Parts start at just $9.99 and boast an impressive 4.3 stars average rating from customers. B & M and Imperial also bring quality to the table, with Transmission Parts available starting at $47.99, and at an average 4.1 stars rating. With 2,888 customer reviews and counting, our 1975 GMC G25 Transmission Parts have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Transmission Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 1975 GMC G25 is always ready to roll. We’re committed to providing you with everything you need to keep your G25 in top shape, all in one place. Start shopping confidently below for your 1975 GMC G25!

Best-Selling Transmission Cooler and Parts for 1975 GMC G25s

Enhance the driving experience in your GMC with 11 quality Transmission Cooler and Part components, starting at $25.99.

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from

$85.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Imperial high-performance transmission cooler
Size: 3/4″ x 10″ x 15-7/8″
SAE 45-degree fittings for maximum reliability
Electrostatic powder-coated to prevent corrosion
SAE 45 degree fittings for maximum reliability
Electrostatically powder coated to prevent corrosion
All aluminum lightweight construction
SAE 45 degree fittings for maximum reliability
Electrostatically powder coated to prevent corrosion
All aluminum lightweight construction

from

$73.99

Product Features:

Imperial Maxi-Cool« plate and fin transmission cooler
Size: 3/4″ x 11″ x 7-1/2″
Mid-size and full-size cars, pickups
GVWR up to 20,000 lbs.; towing up to 2,500 lbs.
Compatible with OEM cooler systems
Made with the highest quality materials
100% pressure testing to 150 PSI for quality assurance
33% more efficient than a comparable tube and fin design

from

$85.99

The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.

Product Features:

Class “A” motor homes, large travel trailers, 5th-wheel trailers
GVWR up to 30,000 lbs.; towing up to 10,000 lbs.
Compatible with OEM cooler systems
33% more efficient than a comparable tube and fin design

from

$65.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Imperial Econo-Kool tube and fin transmission cooler
Size: 3/4″ x 10″ x 15-7/8″
Class “A” motor homes, large travel trailers, 5th-wheel trailers
GVWR up to 26,000 lbs.; towing up to 10,000 lbs.
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators

from

$80.99

The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.

Product Features:

Imperial Rapid-Cool plate and fin transmission cooler
Size: 3/4″ x 11″ x 9-1/2″
Pickup trucks and vans, class “C” motor homes, travel trailers to 24′
GVWR up to 24,000 lbs.; towing up to 5,000 lbs.
33% more efficient than a comparable tube and fin design
Compatible with OEM cooler systems
Made with the highest quality materials
100% pressure testing to 150 PSI for quality assurance
33% more efficient than a comparable tube and fin design

from

$52.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Mid-size and full-size cars, pickups
GVWR up to 18,000 lbs.; towing up to 3,500 lbs
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators

from

$83.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Imperial high-performance transmission cooler
Size: 3/4″ x 7-1/2″ x 15-7/8″
SAE 45-degree fittings for maximum reliability
Electrostatic powder-coated to prevent corrosion
Up to Class C motorhomes, towing up to 5,000 pounds
SAE 45 degree fittings for maximum reliability
Electrostatically powder coated to prevent corrosion
All aluminum lightweight construction

from

$25.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Transmission cooler reinstallation kit
Contains part numbers 248001, 226201, 240250 and 4 hose clamps
Provides all hardware for reinstallation of Imperial transmission coolers
Contains nylon mounting rods, foam pads, locking buttons, hose and fitting
Made of high grade nylon for easy installation
Removable buttons for cooler/fan relocation
Made for both transmission coolers and electric fan installation
Comes with Quick Connect coupler

from

$67.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Imperial high-performance transmission cooler
Size: 3/4″ x 7-1/2″ x 12-1/2″
SAE 45-degree fittings for maximum reliability
Electrostatic powder-coated to prevent corrosion
SAE 45 degree fittings for maximum reliability
Electrostatically powder coated to prevent corrosion
All aluminum lightweight construction
SAE 45 degree fittings for maximum reliability
Electrostatically powder coated to prevent corrosion
All aluminum lightweight construction

from

$65.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Imperial Econo-Kool tube and fin transmission cooler
Size: 3/4″ x 7-1/2″ x 15-7/8″
Pickup trucks and vans, class “C” motor homes, travel trailers to 24′
GVWR up to 22,000 lbs.; towing up to 5,000 lbs.
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators

from

$151.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Imperial Econo-Kool tube and fin transmission cooler
Size: 1-1/2″ x 12″ x 15 1/8″
Severe-duty transmission oil cooling applications
Towing with class “A” motor home or towing more than 10,000 lbs.
Compatible with OEM cooler systems
Ultrasonically soldered for reliability
100% pressure testing to 150 PSI for quality assurance
High efficiency turbulators

Most Popular 1975 GMC G25 Automatic Transmission Parts

Customize your GMC with 24 Automatic Transmission Parts products like Transmission Solenoids, Transmission Bushings, and Transmission Dipsticks, all priced under $125.99.

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from

$3.99

AT SOLENOID SEAL

from

$33.99

Cable Bracket, GM APPLICATION: For TH400, 350, 250, 200, 700R4, 2004R transmissions.

Product Features:

Shifter Service Parts

from

$34.49

Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:

Meets or exceeds OE fit, form and function

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$33.99

Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:

Meets or exceeds OE fit, form and function

from

$33.99

Includes dipstick with chromed steel handle and chromed steel dipstick tube with mounting tab. 27 inch long.

Product Features:

Fits GM Th350 – Chevy Specific. Modify For Others
27 In Length
Chrome Plated Steel

from

$48.99

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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$22.99

Includes brackets, grommets, etc to match original
Helps transmission determine ideal downshift
Improves vehicle performance

from

$19.99

Product Features:

Edelbrock Part # 8026 GM Transmission adapter is for use with 2004R, 700R4, 4L60 transmissions.
This kit relocates the pin position on an Edelbrock Carburetor when hooking up to a throttle valve style transmission (700R4, 2004R, 4L60).
The pin location is critical as the TV controls line pressure, shift points, shift firmness, and part throttle downshifts.

from

$10.99

This brake pedal bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this brake pedal bushing matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$29.99

Detent cables connect the throttle mechanism to the transmission. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. ATP Detent cables are designed to fit and function just like the original part to ensure durability and long life.

Product Features:

Includes brackets, grommets, etc to match original
Helps transmission determine ideal downshift
Improves vehicle performance

from

$8.99

AT OIL PUMP ORING

from

$7.29

Direct replacement – this clutch pilot bushing matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$48.99

AT MODULATOR VALVE

from

$17.99

AT MODULATOR VALVE

from

$10.99

AT FRT PUMP BUSHING

from

$83.99

Product Features:

Throttle/Cruise Control/Transmission
Cable Mounting Bracket

from

$48.99

The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.

Product Features:

Application matched component ensures the transmission gear position system can be returned to like new condition.
Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
This part will look and function just like the original unit being replaced.

from

$125.99

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

from

$124.99

Automatic Transmission Dip Stick

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$124.99

Automatic Transmission Dip Stick
Mounts to bellhousing
Sold as a kit
Natural finish
Fits TH350 & TH350C

from

$111.99

AT CONTR SOLENOID

from

$12.99

AT CLUTCH PLATE

from

$9.99

AT CLUTCH PLATE

from

$6.99

AT CLUTCH PLATE

Top Picks for 1975 GMC G25 Transmission Mounts

Upgrade GMC G25s with top-quality Transmission Mounts parts, including 2 OEM and aftermarket selections for your 1975 model.

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from

$9.79

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 1957-1984
Weight approx: 2 Lbs
HEIGHT: 1.8 INCH: 45.7 MM
ALL BOLT HOLES INLINE
BOLT CENTERLINE: 1.5 INCH: 38.1 MM

from

$8.29

The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to BUIC 66-73; CHEV 58-84; GMC 67-84; OLDS 68-72; PONT 61-77;. Please verify your application.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 1958-1984
Weight approx: 2 Lbs
RUBBER CROWN WITH AIR GAP
HEIGHT WITHOUT STUDS: 1.9 INCH: 48.25 MM
STUDS AND BOLT HOLES INLINE
STUD CENTERLINE: 1.5 INCH: 38.1 MM

In-Demand Transmission Bearings for 1975 GMC G25s

Select from 10 premium Transmission Bearings parts for your 1975 GMC G25, with prices ranging from $7.99 to $110.99.

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from

$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$14.99

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

CONSISTENT PERFORMANCE — Matched cup and cone components ensure consistent performance
PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION — Crowned raceways and rollers for even load distribution
OE-STYLE DESIGN — Engineered to meet OE specifications
COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$15.99

Product Features:

CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
OE-STYLE DESIGN: Engineered to meet OE specifications
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$16.49

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$40.99

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

Premium bearing design matches OEM specifications
Precision manufactured using premium-grade steel for outstanding durability and performance
Controlled heat treating process for lasting performance and extended bearing life
Industry leading coverage
Professional technicians know they can depend on National

from

$7.99

Product Features:

Brand may vary by location

from

$110.99

Product Features:

BUILT TO LAST: Advanced heat treatment process for strength
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$34.49

With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

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

from

$23.79

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$20.79

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Most Sold 1975 GMC G25 Transmission Seals

Explore our best-selling GMC parts for the 1975 G25 among 25 OEM and aftermarket options starting from $2.99.

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from

$11.99

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$12.99

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$12.99

Design type: spring loaded; multi-lip
Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
Resistance to EP lubricants
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$8.99

AT SEL SHAFT SEAL

from

$3.99

Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.

from

$7.99

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$5.99

AT DPSTK TUBE SEAL

from

$6.99

Product Features:

Design type: springless; single-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$20.49

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$12.29

AT EXT HOUSING SEAL

from

$8.99

AT EXT HOUSING SEAL

from

$2.99

Product Features:

ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts

from

$13.29

AT EXT HOUSING SEAL

from

$5.99

Design type: springless; single-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$15.49

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$9.99

AT SPEED PINION SEAL

from

$49.99

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Design type: split-lip; 2-piece
Temperature range: -80 Deg. F to 350 Deg. F / -62 Deg. C to 176 Deg. C
Good dry heat resistance
Excellent low temperature capability
Delivers quality and reliable performance for every type of repair

from

$123.99

ManTransBrg-SealKit

from

$16.49

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$8.99

AT EXT HOUSING SEAL

from

$5.99

AT SEAL

from

$92.99

ManTransBrg-SealKit

from

$16.79

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

from

$7.49

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Rated Transmission Parts Brands For Your 1975 GMC G25

Shop for the best-rated brands offering Transmission Parts and other products for your 1975 GMC G25s. Below you’ll find some of our best rated Transmission Parts from National, B & M, and Imperial, and more. Transmission Parts from these brands that fit a 1975 G25 start at just $9.99 and are rated as high as 4.3 stars. OEM and aftermarket Transmission Parts don’t get more top quality, durable, and affordable than from the brands below.

Popular National 1975 GMC G25 Transmission Parts

When it comes to maintaining or upgrading your 1975 GMC G25, using quality Transmission Parts is essential to ensure durability and a perfect fit. National ticks all of those boxes. We offer a wide selection of National Transmission Parts, specifically designed for the 1975 GMC G25. With over 3 National brand Transmission Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $9.99, with an average price of just $12.99. Plus, with over 31 customer reviews and an average rating of 4.3 stars, you can trust that our National Transmission Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $11.99

(2)

Multi-Purpose Seal

“Sealed tbe trams leak perfectly”

from $16.99

(25)

Multi-Purpose Bearing

“Smooth”

from $9.99

(4)

Multi-Purpose Seal

“it worked”

Popular B & M 1975 GMC G25 Transmission Parts

B & M auto parts is one of the highest quality Transmission Part brands in the market. Any 1975 GMC G25 owner should feel confident when installing genuine B & M parts in their vehicle. To ensure the best fit and performance for your 1975 G25, Advance Auto Parts carries a full inventory of 3 B & M Transmission Parts. Plus you will be keeping your GMC in peak condition while saving money because prices on these B & M Transmission Parts range from $47.99 to $549.99, plus, with more than 3 customer reviews and an impressive 4.1 stars average rating, you can be confident the Fram Transmission Parts below will deliver on both quality and value.

from $47.99

(1)

Shifter Accessories, Bracket and Lever Kit Fits TH400/TH350/TH250/200-4R/700R4

“Cable not perfectly straight. It is hard to believe as long as B&M and th400s have been around, that they do not line up better”

from $549.99

(1)

Tork Master 3000

“good parts and very strong”

from $362.99

(1)

Automatic Shifter, Sport Shifter

“This is a sweetly made product with that hotrod look and feel.This shifter was easy to install and a knock out to drive.No down falls as far as I’m aw”

FAQs for 1975 GMC G25 Transmission Parts

Which Transmission Parts are best-sellers for 1975 GMC G25s?

Out of 139 Transmission Parts that fit 1975 GMC G25s, the following parts are the top sellers:

Taper Bearing Set (5050537) – $10.99
High Performance Transmission Oil Cooler (3670013) – $83.99
Multi-Purpose Seal (3271668) – $7.99

What’s the price range for 1975 GMC G25 Transmission Parts?

Transmission Part prices for the 1975 GMC G25 start at $2.99 and go up to $1,299.99 for the most premium parts.

What’s the average price of a Transmission Part for a 1975 GMC G25?

The average price for Transmission Parts for the 1975 GMC G25 is $151.32. Keep in mind the variety of part types within our Transmission Part category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Parts for other GMC G25 model years?

Yes, we currently carry Transmission Parts for 3 model years of GMC G25s between 1968 and 1978. Transmission Parts are bought most frequently for the following model years: 1978, 1977, 1976, and 1968.

What are the cheapest Transmission Parts for my 1975 GMC G25?

The cheapest 1975 GMC G25 Transmission Parts we carry in stock are:

Automatic Transmission Speedometer Pinion Seal (11236107) – $2.99
Differential Pinion Seal (10751056) – $3.99
AT SOLENOID SEAL (11239035) – $3.99
Shift Shaft O-Ring (12009712) – $3.99
AT DPSTK TUBE SEAL (11236304) – $5.99

What are the top-rated Transmission Parts that fit the 1975 GMC G25?

Out of 2,888 reviews by customers, our 1975 GMC G25 Transmission Parts have an average customer rating of . These are some of the highest-rated Transmission Part types for the 1975 GMC G25 and their top-rated products:

Automatic Transmission Pan and Gaskets
- Transmission Oil Pan Gasket 13 Bolt Hole One Piece Gasket (5181011) – $9.99
- Transmission Oil Pan Gasket 13 Bolt Hole One Piece Gasket (5181054) – $9.49
- Automatic Transmission Oil Pan (17360643) – $73.99

What types of Transmission Parts do you sell for my 1975 GMC G25?

As of 11/2/25, these are some of the most in-demand types of Transmission Parts for a 1975 GMC G25:

Can I get help with 1975 GMC G25 Transmission Part orders?

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

What is your return policy for GMC G25 Transmission Parts?

Advance Auto Parts keeps returns simple. For new GMC G25 Transmission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1975 GMC G25 Transmission Parts

ATP – ATP Automatic Transmission Detent Cable (Part No.Y-100)

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

ATP – AT CLUTCH PLATE (Part No.SC-30)

ATP – AT CONTR SOLENOID (Part No.SE-1)

National – Multi-Purpose Seal (Part No.5200)

ATP – AT OVERHAUL KIT (Part No.SGS-27)

B & M – Automatic Shifter, Stealth Pro Ratchet 3 and 4 Speed (Part No.81120)

ARP Auto Racing – For Use With 90 Degree V6 Chevy/ 305, 502 V8 With 1 Piece Rear Seal (Part No.200-2906)

ATP – AT SEAL (Part No.SO-39)

National – Differential Pinion Seal (Part No.2043)

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

Mr. Gasket – Automatic Transmission Oil Pan Gasket (Part No.8690)

Edelbrock – Automatic Trans Cable Adapter #8026 for GM 2004R, 700R4, 4L60 Transmissions (Part No.8026)

Dorman – Clutch Pilot Bushing (Part No.690-014.1)

B & M – Transmission Cast Deep Pan, Brushed Finish TH-350 (Part No.30280)

Anchor – Transmission Mount: Rear, 1 Piece (Part No.2378)

National – Multi-Purpose Seal (Part No.240735)

B & M – Cable Bracket (Part No.30498)

ATP – AT OIL PUMP GASKET (Part No.SG-27)

Felpro – Manual Transmission Gasket Set (Part No.TS 30118)

National – Bearings (Part No.305)

ATP – AT SEL SHAFT SEAL (Part No.SO-19)

National – Multi-Purpose Seal (Part No.6712NA)

National – Multi-Purpose Seal (Part No.9613S)

National – Multi-Purpose Bearing (Part No.A-3)

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)

ATP – AT MASTER REPAIR KIT (Part No.JM-9)

Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-828)

Imperial – High Performance Transmission Oil Cooler (Part No.240516)

Imperial – Maxi-Kool® XL Transmission Oil Cooler (Part No.243007)

Imperial – Maxi-Kool XL Transmission Oil Cooler (Part No.243012)

Imperial – Econo-Kool Transmission Oil Cooler (Part No.241018)

Imperial – Plate and Fin Style Transmission Cooler, Heavy Duty, 3/4" x 9-1/2" x 11" (Part No.243008)

Imperial – Econo-Kool® Transmission Oil Cooler (Part No.242012)

Imperial – High Performance Transmission Oil Cooler (Part No.240514)

Imperial – Transmission Oil Cooler Reinstallation Kit (Part No.248002)

Imperial – High Performance Transmission Oil Cooler (Part No.240512)

Imperial – Econo-Kool Transmission Oil Cooler (Part No.242016)

Imperial – Transmission Oil Cooler (Part No.241015)

ATP – AT SOLENOID SEAL (Part No.JO-15)

B & M – Cable Bracket (Part No.30499)

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)

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

Mr. Gasket – Chrome Automatic Transmission Dipstick & Tube – 27" Length (Part No.9764)

B & M – Modulator (Part No.20234)

ATP – ATP Automatic Transmission Detent Cable (Part No.Y-100)

Edelbrock – Automatic Trans Cable Adapter #8026 for GM 2004R, 700R4, 4L60 Transmissions (Part No.8026)

Dorman – Help – Brake and Clutch Bushings (Part No.74016)

ATP – Automatic Transmission Detent Cable (Part No.Y-103)

ATP – AT OIL PUMP ORING (Part No.SO-21)

Dorman – Clutch Pilot Bushing (Part No.690-014.1)

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

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

ATP – AT FRT PUMP BUSHING (Part No.CB-4)

Edelbrock – Throttle & Auto Trans Kickdown Bracket #8030 SBC 1995 and Earlier (Non-Vortec) (Part No.8030)

Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1023)

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

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

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

ATP – AT CONTR SOLENOID (Part No.SE-1)

ATP – AT CLUTCH PLATE (Part No.JC-57)

ATP – AT CLUTCH PLATE (Part No.SC-26)

ATP – AT CLUTCH PLATE (Part No.SC-30)

Anchor – Transmission Mount: Rear, 1 Piece (Part No.2378)

Anchor – Transmission Mount: Rear, 1 Piece (Part No.2268)

Driveworks – Taper Bearing Set (Part No.S-A-6)

National – Multi-Purpose Bearing (Part No.A-3)

National – Multi-Purpose Bearing (Part No.A-2)

Driveworks – Taper Bearing Set (Part No.S-A-36)

National – Bearings (Part No.305)

Driveworks – Tapered Roller Bearing (Part No.S-LM-603012)

National – Multi-Purpose Bearing (Part No.1308-L)

FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT36)

FAG US – Cone (Part No.KLM603049)

FAG US – Cup (Part No.382A)

National – Multi-Purpose Seal (Part No.9449)

National – Multi-Purpose Seal (Part No.5200)

National – Multi-Purpose Seal (Part No.8460N)

ATP – AT SEL SHAFT SEAL (Part No.SO-19)