1978 GMC K15 Transmission Parts

Essential 1978 GMC K15 Transmission Parts

Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-17)

Automatic Transmission Deluxe Rebuild Kit

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$232.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.

Product Features:
  • Include steels, frictions, gaskets, and filter
  • Includes Band and Modulator (if applicable)
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Mr. Gasket – Chrome Automatic Transmission Dipstick & Tube – 27" Length (Part No.9764)

Chrome Automatic Transmission Dipstick & Tube - 27" Length

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$30.99
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
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Driveworks – Taper Bearing Set (Part No.S-A-36)

Taper Bearing Set

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$16.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Imperial – Transmission Line Fitting Kit (Part No.240390)

Transmission Line Fitting Kit

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$14.79
Product Features:
  • Transmission line fitting kit
  • GM, Jeep; 5/8″-18 inverted flare
  • Helps simplify transmission cooler installation
  • Allows for auxiliary transmission cooler installation without cutting OE lines
  • Crafted from high-quality material that makes it durable and longer-lasting
  • A high quality, direct fit OE replacement
  • Easily connects the transmission cooler line to the cooler hose
  • Coated for extra protection against corrosion
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Anchor – Transmission Mount: Left, Right, 1 Piece (Part No.2108)

Transmission Mount: Left, Right, 1 Piece

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$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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Mr. Gasket – Automatic Transmission Oil Pan (Part No.9762)

Automatic Transmission Oil Pan

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$65.99
These pans are offered in stock depth or deep with extra capacity and available in both steel and aluminum to fit your specific needs. Includes drain plug, gasket and hardware.

Product Features:
  • Overall Height: 2.0″
  • Stock Depth and Capacity
  • Includes: Drain Plug, Washer & Gasket
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Driveworks – Taper Bearing Cup (Part No.S-M-88010)

Taper Bearing Cup

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$5.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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ATP – AT DPSTK TUBE SEAL (Part No.SO-35)

AT DPSTK TUBE SEAL

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$5.99
AT DPSTK TUBE SEAL

National – Multi Purpose Seal (Part No.5208)

Multi Purpose Seal

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$18.29
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

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$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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National – Bearings (Part No.2793)

Bearings

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$38.99
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
  • 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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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

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$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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ATP – AT SPD PINION SEAL (Part No.SO-38)

AT SPD PINION SEAL

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$5.99
AT SPD PINION SEAL

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

ATP Automatic Transmission Detent Cable

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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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Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-37)

Tapered Cone/Cup Wheel Bearing Set

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$11.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Driveworks – Oil Seal (Part No.S-2043)

Oil Seal

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$7.79
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Permatex – High-Torque, High-Vibration RTV Silicone Gasket Maker, 13 OZ (Part No.82195)

High-Torque, High-Vibration RTV Silicone Gasket Maker, 13 OZ

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$26.99
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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ATP – AT SEL SHAFT SEAL (Part No.SO-19)

AT SEL SHAFT SEAL

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$7.99
AT SEL SHAFT SEAL

Driveworks – Oil Seal Kit (Part No.S-5200)

Oil Seal Kit

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$6.79
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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ATP – AT SEAL (Part No.SO-39)

AT SEAL

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$5.99
AT SEAL

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

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$18.99
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

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$84.99
When swapping the TH400 transmission into any vehicle, this kit makes installation of the transmission’s kickdown feature a snap. This switch mounts to either a TH700R4, TH200, TH200-R4 or TH350 throttle cable bracket.

Product Features:
  • Allows High Speed Cruise
  • Cruise In Overdrive
  • Prevents Part Throttle Kickdown
  • Quick Installation
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B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)

Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission

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$109.99
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
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National – Bearings (Part No.307-L)

Bearings

from

$39.49
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
  • 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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B & M – Shift Improver Kit For 68-81 TH-350 Transmission (Part No.30262)

Shift Improver Kit For 68-81 TH-350 Transmission

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$62.99
HEAVY DUTY-Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. STREET/STRIP-Positive shifts for high performance street use or for competitive events. Hardest, quickest possible shift.

Product Features:
  • Provides Crisp Shifts
  • On Any Stock Automatic Transmission
  • Eliminates Soft/Sluggish Shift
  • Eliminates Shift Overlap
  • Eliminate Clutch and Band Wear
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B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)

Transpak For 65-87 TH400 Transmission

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$141.99
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
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ATP – AT OIL PUMP ORING (Part No.SO-21)

AT OIL PUMP ORING

from

$8.99
AT OIL PUMP ORING

Popular 1978 GMC K15 Transmission Parts Categories

1978 GMC K15 Transmission Parts

You count on your 1978 GMC K15 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 158 Transmission Parts ranging in price from $1.99 to $1,150.00, you’re sure to find everything you need for your 1978 GMC K15.

Brands matter. If you want to shop a specific Transmission Parts brand, we stock 17 different brands like National, Imperial, and Driveworks. 1978 GMC K15 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 1,393 extensive product reviews on 1978 GMC K15 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 1978 GMC K15 below to get started!

Top-Rated Transmission Parts Brands For Your 1978 GMC K15

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 1978 GMC K15 running right for years to come. In our inventory you’ll find brands like National, Imperial, Driveworks, and even more.

Popular Felpro Transmission Parts

You’ll find popular Felpro brand products across Automatic Transmission Pan and Gaskets. All are waiting to get your 1978 GMC K15 back on the road. Some of the top-rated Felpro products in these categories are:
Transmission Oil Pan Gasket
from $8.49
(3)
Transmission Oil Pan Gasket
Transmission Oil Pan Gaskets
Transmission Oil Pan Gasket
from $9.29
(5)
Transmission Oil Pan Gasket
Transmission Oil Pan Gaskets

FAQs for 1978 GMC K15 Transmission Parts

What are the most purchased Transmission Parts for the 1978 GMC K15?

Out of 158 Transmission Parts for the 1978 GMC K15, the most popular in our inventory are:
Bearings
from $25.99
(23)
Bearings
Manual Transmission Differential Bearings
Cylindrical Bearing
from $22.99
(20)
Cylindrical Bearing
Axle Output Shaft Bearings
Econo-Kool® Transmission Oil Cooler
from $39.99
(10)
Econo-Kool® Transmission Oil Cooler
OE Transmission Coolers

What are the top-rated 1978 GMC K15 Transmission Parts?

Top-rated Transmission Parts for your 1978 GMC K15 based on customer reviews/ratings are:
Multi Purpose Seal
from $22.29
(20)
Multi Purpose Seal
“worked great”
Multi Purpose Seal
from $6.99
(20)
Multi Purpose Seal
“The product works well”
Automatic Shifter, Z-Gate
from $279.99
(11)
Automatic Shifter, Z-Gate
“Good Product, Great For The Price”