1977 GMC K25 Transmission Parts

Essential 1977 GMC K25 Transmission Parts

National – Multi Purpose Seal (Part No.2287)

Multi Purpose Seal

from

$8.79
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:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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Carquest Premium – Back Up Light Switch (Part No.SAA4615)

Back Up Light Switch

from

$29.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Imperial – Mounting Kit System (Part No.226201)

Mounting Kit System

from

$11.49
Product Features:
  • Imperial mounting kit system
  • For installation of transmission coolers and electric fans
  • Provides quick, effective installation of Imperial products
  • Contains nylon mounting rods, foam pads and locking buttons
  • Atermarket electric fan and cooler mounting rods
  • Made with the highest quality materials
  • Quality machined for durability
  • Removable buttons for relocation
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Dorman – Help – Clutch Pilot Bushing (Part No.14650)

Clutch Pilot Bushing

from

$8.29
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
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ATP – AT BANNER KIT (Part No.JM-10)

AT BANNER KIT

from

$168.99
AT BANNER KIT

National – Bearings (Part No.2720)

Bearings

from

$12.49
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
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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National – Taper Bearing Cone (Part No.LM501349)

Taper Bearing Cone

from

$17.99
Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:
  • 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
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Dorman – Help – Shifter Link Bushing (Part No.02373)

Shifter Link Bushing

from

$4.19
We offer a line of Auto Trans Shift Lever Control Rod Bushings for a range of applications. All our Auto Trans Shift Lever Control Rod Bushings are made of quality materials for a long service life.

Product Features:
  • Direct replacement for a proper fit every time
  • Conveniently available in a variety of sizes
  • Easy to install
  • Manufacturing materials include durable plastic
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ATP – AT OIL PUMP ORING (Part No.SO-21)

AT OIL PUMP ORING

from

$8.99
AT OIL PUMP ORING

Felpro – Transmission Oil Pan Gasket (Part No.TOS 18633)

Transmission Oil Pan Gasket

from

$8.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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B & M – Transmission Cast Deep Pan, Brushed Finish – TH400 (Part No.20280)

Transmission Cast Deep Pan, Brushed Finish - TH400

from

$225.99
Add fluid capacity to your transmission. Extra fluid means more cooling, and more cooling means better efficiency and performance. Add life to your transmission with a B&M Deep Pan! Adds 2 additional quarts to the system.

Product Features:
  • Additional Oil Capacity
  • More Cooling Ability
  • No Dipstick Modification
  • Some Include Fluid Pickup Extension
  • Built-In Drain Plugs
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ATP – AT CLUTCH PLATE (Part No.JC-50)

AT CLUTCH PLATE

from

$8.99
AT CLUTCH PLATE

ATP – AT SEAL (Part No.SO-39)

AT SEAL

from

$5.99
AT SEAL

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

Automatic Trans Cable Adapter #8026 for GM 2004R, 700R4, 4L60 Transmissions

from

$18.99
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.
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Anchor – Transmission Mount: Left, Right, 1 Piece (Part No.2108)

Transmission Mount: Left, Right, 1 Piece

from

$5.99
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 CHEV 55-91; GMC 55-91;. 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: 1955-1991
  • Weight approx: 1 Lbs
  • REUSE BRACKET
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Imperial – Econo-Kool® Transmission Oil Cooler (Part No.241018)

Econo-Kool® Transmission Oil Cooler

from

$65.99
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
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Pro-King – Automatic Transmission Remanufactured Torque Converter (Part No.GM4401)

Automatic Transmission Remanufactured Torque Converter

from

$97.99
Remanufactured using industry-leading techniques to assure enhanced torque performance and extended life. Each unit is harmonically balanced and leak tested with any inherent OE weaknesses corrected. Pro-King torque converters are subject to random ISO 9001 quality tests before leaving the factory.

Product Features:
  • Fluid Balanced
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Driveworks – Oil Seal (Part No.S-6712NA)

Oil Seal

from

$6.29
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Felpro – Manual Transmission Gasket Set (Part No.TS 30118)

Manual Transmission Gasket Set

from

$24.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

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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Permatex – Ultra Grey RTV Silicone Gasket Maker, 3 OZ (Part No.82194)

Ultra Grey RTV Silicone Gasket Maker, 3 OZ

from

$11.49
Permatex Ultra Grey is specified for high torque and high vibration applications. Ultra Grey offers a sensor-safe, low odor, non-corrosive formula and is OEM specified to fit dealership warranty requirements. This high performance gasket maker meets performance specs of OE silicone gaskets and can be used on high torque and vibration applications such as valve covers, water pump, intake manifold end seals ad thermostat housings.

Product Features:
  • High torque and rigidity
  • Sensor-safe, non-corrosive formula
  • OEM specified
  • Low-odor, non-corrosive formula
  • Ideal for closed spaced bolt patterns
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B & M – Transpak For 68-81 TH 350 Transmission (Part No.30228)

Transpak For 68-81 TH 350 Transmission

from

$128.99
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
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National – Bearings (Part No.M802011)

Bearings

from

$14.79
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
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

B & M – Shifter Accessories, Bracket and Lever Kit Fits TH400/TH350/TH250/200-4R/700R4 (Part No.35498)

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

from

$40.99
Bracket and Lever Kit for TH-350, 400, 200, 700-R4, 4L60E and 200-4R transmissions.

Product Features:
  • Incl. Cable Bracket/Shift Lever/Spacers
  • Incl. Swivel/Cotter Pin
  • Natural Finish
  • Sold as a kit
  • Replacement part
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Mr. Gasket – Automatic Transmission Dipstick With Tube (Part No.9764)

Automatic Transmission Dipstick With Tube

from

$30.99
Compliment your engine compartment with one of these beautifully chrome plated dipsticks and tubes. Includes O-ring.

Product Features:
  • Fits GM TH350 Chevy specific modify for others
  • 27 in. length
  • Chrome plated steel
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National – Multi Purpose Seal (Part No.9449)

Multi Purpose Seal

from

$9.99
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:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

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

Multi Purpose Seal

from

$7.99
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:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

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

AT SOLENOID SEAL

from

$3.99
AT SOLENOID SEAL

Popular 1977 GMC K25 Transmission Parts Categories

1977 GMC K25 Transmission Parts

You count on your 1977 GMC K25 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Transmission Parts. With 142 Transmission Parts ranging in price from $1.99 to $973.99, you’re sure to find everything you need for your 1977 GMC K25.

Brands matter. If you want to shop a specific Transmission Parts brand, we stock 18 different brands like Imperial, Permatex, and National. 1977 GMC K25 Transmission Parts start as low as $1.99!

One of the best ways to find top quality OEM or aftermarket Transmission Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 2,200 extensive product reviews on 1977 GMC K25 Transmission Parts. Some of the top-rated Transmission Parts products we carry are Multi Purpose Seal with 4.4 stars and Multi Purpose Seal with 4.4 stars.

Did we mention you can order your Transmission Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Transmission Parts inventory for your 1977 GMC K25 below to get started!

Top-Rated Transmission Parts Brands For Your 1977 GMC K25

Trusted Transmission Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1977 GMC K25 running right for years to come. In our inventory you’ll find brands like Imperial, Permatex, National, and even more.

Popular Carquest Transmission Parts

You’ll find popular Carquest brand products across Back Up Neutral Safety Parts and Automatic Transmission Parts. All are waiting to get your 1977 GMC K25 back on the road. Some of the top-rated Carquest products in these categories are:
Neutral Safety Switch
from $15.05
(1)
Neutral Safety Switch
Back Up and Neutral Safety Switches
Automatic Transmission Vacuum Modulator
from $51.05
(1)
Automatic Transmission Vacuum Modulator
Transmission Modulator Valves

FAQs for 1977 GMC K25 Transmission Parts

What are the most purchased Transmission Parts for the 1977 GMC K25?

Out of 142 Transmission Parts for the 1977 GMC K25, the most popular in our inventory are:
Ultra Grey RTV Silicone Gasket Maker, 3 OZ
from $11.49
(95)
Ultra Grey RTV Silicone Gasket Maker, 3 OZ
Transmission Pan Gaskets
Mounting Kit System
from $11.49
(27)
Mounting Kit System
Transmission Oil Cooler Fittings
Bearings
from $25.99
(23)
Bearings
Countershaft Bearings

What are the top-rated 1977 GMC K25 Transmission Parts?

Top-rated Transmission Parts for your 1977 GMC K25 based on customer reviews/ratings are:
Multi Purpose Seal
from $6.99
(20)
Multi Purpose Seal
“Would have been fine most likely – if correct seal was in the box. For redoing a Front Crank Seal on a 4 cylinder 89 Ranger.”
Multi Purpose Seal
from $22.29
(20)
Multi Purpose Seal
“worked great”
Econo-Kool® Transmission Oil Cooler
from $65.99
(11)
Econo-Kool® Transmission Oil Cooler
“In the instructions, a fitting kit #252 was required for my particular truck. It was wrong…#395 was the correct kit. Folks at Imperial advised me of”