GMC C25 Transmission Parts

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Essential GMC C25 Transmission Parts

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

Manual Transmission Gasket Set

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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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Driveworks – Oil Seal (Part No.S-6712NA)

Oil Seal

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$6.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Imperial – Econo-Kool Transmission Oil Cooler (Part No.241018)

Econo-Kool Transmission Oil Cooler

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
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Schaeffler – Tapered Roller Bearing (Part No.KT63)

Tapered Roller Bearing

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$35.99
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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Dorman – Help – Auto Transmission Case Vent (Part No.14689)

Auto Transmission Case Vent

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$7.49
This transfer case vent is designed to match the fit and function of the original vent on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this transfer case vent is designed to match the fit and function of the original vent on specified vehicles
  • Restores functionality – reliable replacement for an original vent that has failed due to blockage or 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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B & M – Automatic Shifter, Quicksilver 4 Speed (Part No.80683)

Automatic Shifter, Quicksilver 4 Speed

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$499.99
The B&M Quicksilver features a ratcheting action for positive shifts, Chrome Knob, neutral safety switch, NHRA/IHRA approved Reverse Lockout. Fits Most 3 and 4 speeds.

Product Features:
  • Universal Floor Mount Application
  • Base Trimmed For Custom Fit
  • Cable Operated
  • Quick Installation
  • Accurate Shifting
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B & M – Transmission Kit, Master Overhaul Kit For TH400 (Part No.21041)

Transmission Kit, Master Overhaul Kit For TH400

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$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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Schaeffler – Cup (Part No.M802011)

Cup

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$16.49
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 SOLENOID SEAL (Part No.JO-15)

AT SOLENOID SEAL

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$4.29
AT SOLENOID SEAL

B & M – Transpak For 68-81 TH 350 Transmission (Part No.30228)

Transpak For 68-81 TH 350 Transmission

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$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
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Felpro – Transmission Oil Pan Gasket 13 Bolt Hole One Piece Gasket (Part No.TOS 18633)

Transmission Oil Pan Gasket 13 Bolt Hole One Piece Gasket

from

$9.49
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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Energy Suspension – Transmission Mount (Part No.3.1108R)

Transmission Mount

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$46.49
A true performance application component for cars, trucks, hot rods, racing/competition, yet popularly used for street vehicles when more horsepower is added. Soft running enough to absorb vibrations for street use yet rugged for racing use. Helps control torque on high performance vehicles. Maintains proper drive shaft angle to help prevent early wear and unexpected power train damage. Replaces the original, short lived and typically too-soft rubber mounts and outdates those hard-running metal transmission mounts. Resistant to under vehicle fluid oils, coolants and road contaminants. Made of Energy’s Hyper-Flex performance polyurethane and heavy duty hardware – for added durability.

Product Features:
  • Unique Safety Interlock Design
  • Impervious to Vehicle Oils and Chemicals
  • Strong Enough Too Handle High Performance
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Imperial – Transmission Oil Cooler Reinstallation Kit (Part No.248002)

Transmission Oil Cooler Reinstallation Kit

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
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B & M – DEPTH PAN CHROME HP (Part No.20289)

DEPTH PAN CHROME HP

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$133.99
B&M Deep Transmission Pans increase the fluid capacity of your transmission, improving the cooling, allowing your transmission to work as efficiently as possible. Included drain plug, eliminates the need to drop the pan to drain the fluid.

Product Features:
  • Additional Oil Capacity
  • More Cooling Ability
  • No Dipstick Modification
  • Some Include Fluid Pickup Extension
  • Built-In Drain Plugs
  • Chrome Plated Steel
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ATP – ATP Automatic Transmission Detent Cable (Part No.Y-100)

ATP Automatic Transmission Detent Cable

from

$23.99
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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ATP – AT OIL PUMP ORING (Part No.SO-21)

AT OIL PUMP ORING

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$9.59
AT OIL PUMP ORING

National – Tapered Roller Bearing Cone (Part No.LM501349)

Tapered Roller Bearing Cone

from

$21.99
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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B & M – Kickdown Cable For TH-350 Transmission (Part No.30287)

Kickdown Cable For TH-350 Transmission

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$99.99
These universal fit adjustable cables will work in 95 percent of all listed transmission applications, yet are less expensive than OE models. Use as straight replacement cable or ease the installation of transmission swaps.

Product Features:
  • Universal Fit Adjustable
  • Less Expensive Than OE Models
  • Ease Trans. Swap Installation
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Mr. Gasket – A/Tdipstick (Part No.9703G)

A/Tdipstick

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$95.99
Billet aluminum handle with flexible braded steel tube mounts to the firewall. 29-3/4 inch long.

Product Features:
  • Braided Stainless Steel
  • Firewall Mounting
  • Includes Oil Fill Tube
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B & M – Cable Bracket (Part No.30499)

Cable Bracket

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$33.99
Cable Bracket, GM APPLICATION: For TH400, 350, 250, 200, 700R4, 2004R transmissions.

Product Features:
  • Shifter Service Parts
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ATP – AT SEAL (Part No.SO-39)

AT SEAL

from

$5.99
AT SEAL

Dorman – Help – Shifter Link Bushing (Part No.02373)

Shifter Link Bushing

from

$5.99
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 – these replacement auto trans shift lever control rod bushings match the original equipment design on specified vehicles
  • Conveniently fix- simple solution to address worn bushings and restore original performance and feel
  • Application specific – reverse engineered from the original design on certain vehicle years, makes and models
  • Trustworthy quality – backed by team of engineers and quality specialists in the United States
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ARP Auto Racing – For Use With 90 Degree V6 Chevy/ 305, 502 V8 With 1 Piece Rear Seal (Part No.200-2906)

For Use With 90 Degree V6 Chevy/ 305, 502 V8 With 1 Piece Rear Seal

from

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

AT CONTR SOLENOID

from

$118.99
AT CONTR SOLENOID

GMC C25 Transmission Parts Categories

Helping You Find the Right Transmission Parts for Your GMC C25

You love your C25. So we’ve made it easier than ever to help you find GMC C25 Transmission Parts in our online catalog. Our inventory holds 154 aftermarket and OEM Transmission Parts for your GMC C25, ranging from $3.19 to $1,349.99.

We offer parts from 21 brands trusted to make quality Transmission Parts for your GMC C25. Before you buy, take some time to read through customer reviews. We currently have 7,021 reviews of GMC C25 Transmission Parts from previous customers. Some of the top rated parts include Multi Purpose Seal with 4.4 stars and Wheel Bearing: Direct Fit, 1 Piece with 2.8 stars.

Find your C25 Transmission Parts here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your GMC C25 part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Transmission Parts Brands for Your GMC C25

Our inventory holds Transmission Parts for your GMC C25 from 21 trusted brands. You’ll find OEM and aftermarket parts from brands like Imperial, National, and Driveworks, all of which can keep that GMC happy.

Top-Rated Imperial Transmission Parts

Leading Imperial Transmission Parts

We carry Imperial brand parts for your GMC C25 across several catalog categories, including Transmission Cooler and Parts. Some of our most reviewed Imperial parts include:
High Performance Transmission Oil Cooler
from $79.99
(48)
High Performance Transmission Oil Cooler
OE Transmission Coolers
Maxi-Kool XL Transmission Oil Cooler
from $85.99
(31)
Maxi-Kool XL Transmission Oil Cooler
OE Transmission Coolers
Econo-Kool Transmission Oil Cooler
from $55.99
(30)
Econo-Kool Transmission Oil Cooler
OE Transmission Coolers

FAQs for GMC C25 Transmission Parts

What are the most purchased Transmission Parts for the GMC C25?

Out of 154 Transmission Parts for the GMC C25, the most popular in our inventory are:
Mounting Kit System
from $11.99
(27)
Mounting Kit System
Transmission Oil Cooler Lines
Multi-Purpose Bearing
from $35.99
(23)
Multi-Purpose Bearing
Auto Trans Differential Bearing and Race Set
Econo-Kool Transmission Oil Cooler
from $40.99
(10)
Econo-Kool Transmission Oil Cooler
OE Transmission Coolers

What are the top-rated GMC C25 Transmission Parts?

Top-rated Transmission Parts for your GMC C25 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.”
Wheel Bearing: Direct Fit, 1 Piece
from $15.99
(19)
Wheel Bearing: Direct Fit, 1 Piece
“Worked as it should”
Automatic Transmission Vacuum Modulator
from $21.99
(11)
Automatic Transmission Vacuum Modulator
“Great product”