1981 GMC K2500 Drivetrains

Essential 1981 GMC K2500 Drivetrains

Yukon Gear – Full-Floating Axle Seal For GM 14T (Part No.30018)

Full-Floating Axle Seal For GM 14T

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$13.99
Full-floating axle seal for GM 14T.Yukon Mighty seal.

Product Features:
  • Rear axle seal
  • Fits GM 10.5″ 14 bolt truck
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Yukon Gear – Spindle Nut For GM 10.5" 14 Bolt Truck, 1.935" I.D., 6 Holes (Part No.33510)

Spindle Nut For GM 10.5" 14 Bolt Truck, 1.935" I.D., 6 Holes

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$76.99
Product Features:
  • Spindle nut
  • Fits GM 10.5″ 14 bolt truck
  • 6 holes
  • 1.935″ I.D.
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Yukon Gear – Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25" (Part No.55009)

Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25"

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$27.99
8.25″ IFS, 8.5″, 12P, 7.5″ F, 8.8″ F, 8.25″ Chrysler pinion shim kit.

Product Features:
  • Pinion depth shims for GM 8.25″ IFS, 8.5″, 8.6″, 12 bolt passenger car, Ford 7.5″ and 8.8″, Chrysler 8.25″
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Yukon Gear – Dana 30 / 44 Roll Pin Replacement (Part No.33312)

Dana 30 / 44 Roll Pin Replacement

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$12.99
Dana 30 & Dana 44 roll PIN, 0.235″ DIA, for cross pin shaft.

Product Features:
  • Roll pin for Dana Spicer 30 and Dana Spicer 44
  • 0.235″ diameter
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Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

GM 10.5' 14 Bolt Truck Cover Gasket

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$13.99
14T cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 10.5″ 14 bolt truck
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Driveworks – Differential Pinion Seal (Part No.S-710508)

Differential Pinion Seal

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$26.99
Product Features:
  • Brand may vary by location
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Driveworks – Universal Joint (Part No.DW-369)

Universal Joint

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$15.99
DRIVEWORKS Universal Joints are designed to meet or exceed OE fit, form, and function. These universal joints are set to provide superior quality and easy installation. DRIVEWORKS Universal Joints are constructed from quality materials for extended durability. DRIVEWORKS Universal Joints are pre-lubricated with premium grease to provide a longer service life. The grease fittings are pre-installed to allow for easy maintenance (where applicable).

Product Features:
  • The cross is hot forged for the higher torque and horsepower
  • The bearing cups are made by cold forging, having higher strength and better rigidity
  • Bearig cups allow 360 lubricant distribution to bearing surfaces, and are precision-ground for maximum load-carrying capabilities
  • Lubrication grooves designed to ensure grease penetration to entire journal and needle bearings
  • Grease fitting in the cross allows for easy maintenance and the flexible use of the whole assembly
  • Snap rings are held to strict tolerances to ensure proper cup position and retention
  • Nitrile rubber seals to optimize grease retention and reduce contamination
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Pro-King – Differential Internal Nest Kit (Part No.742J717)

Differential Internal Nest Kit

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$219.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
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Spicer – Universal Joint (Part No.5-153X)

Universal Joint

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$28.99
When you see the Spicer name, you know you are buying the highest quality product available. Spicer universal joints are no exception. Dana manufactures a full line of Spicer universal joints that are engineered to ensure longer life for vehicles.
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Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)

MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart

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$12.79
Product Features:
  • High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks
  • Long-life friction modifiers and premium base oils help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
  • Enhanced cleaning additives help reduce varnish formation and keep the transmission running properly longer
  • Engineered with a unique blend of viscosity modifiers and base oils to provide better oil flow at low temperatures and greater film protection at higher temperatures
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Anchor – Center Support Bearing Motor Mount: Center, 1 Piece (Part No.6038)

Center Support Bearing Motor Mount: Center, 1 Piece

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$34.49
Center support bearings or Carrier Support Bearings are used when the driveshaft is split into two sections. It serves as a junction on the drive shaft between the transmission and the differential allowing the driveshaft to flex, relieving stress on other drive line components. Each part is engineered and designed to OE Standards. Applicable to AUTOCAR 84-88; CHEV 60-02; DODGE 57-02; FORD 55-07; GMC 63-02; INTL 57-02; KW 81-18; MACK 80-83; PTRB 65-83; WHGM 88-95; WHIT 81-88;. Please verify your application.

Product Features:
  • MAXIMUM VIBRATION DAMPENING: Rubber cushion is made of high grade rubber that ensures maximum dampening of vibration and the ability to absorb over loads.
  • HEAVY GAUGE STEEL FRAME: The housing frame is made from heavy gauge steel with durability that extends the service life.
  • READY TO INSTALL: Most center supports include a sealed bearing and dust shield and are ready to install.
  • For Years: 1955-2018
  • Weight approx: 4 Lbs
  • BEARING ID / BORE: 1.5750 INCH / 40 MM
  • CENTERLINE: 2.48 INCH / 63 MM
  • MOUNT WIDTH: 6.62 INCH / 168 MM
  • STYLE: ROUND FRAME
  • NOT PICTURED: TWO DUST SHIELDS
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National – Wheel Bearing and Seal Kit (Part No.SBK-1)

Wheel Bearing and Seal Kit

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$19.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Spindle bearing and seal kit
  • Includes all components required to complete the repair
  • 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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Yukon Gear – Dana 44, 8.2", 12P, 12T, Vet, And Model 20 U-Bolts (Part No.41198)

Dana 44, 8.2", 12P, 12T, Vet, And Model 20 U-Bolts

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$34.99
1310 U-bolts, 5/16″ x 1-3/8″ Dana 30, Dana 44, 8.2″, 12P, 12T, VET, Model 20.

Product Features:
  • u-joint u-bolt kit
  • Fits AMC Model 20, Dana Spicer 30 and 44, GM 8.2″, 12 bolt passenger car and truck and 1963-1979 Corvette
  • 1310 u-joint size
  • Includes two u-bolts and four nuts
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National – Bearings (Part No.31520)

Bearings

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$12.29
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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USA Standard Gear – Ring & Pinion Gear Set For GM 9.5" In A 3.42 Ratio (Part No.36298)

Ring & Pinion Gear Set For GM 9.5" In A 3.42 Ratio

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$369.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:
  • Fits GM 9.5″
  • 9.50″ ring gear diameter
  • 30 spline pinion
  • 12 ring gear bolts
  • 3.42 ratio
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Yukon Gear – Replacement Front Axle Inner Seal Redi-Sleeve For Dana 44 & 8.5" GM (Part No.30219)

Replacement Front Axle Inner Seal Redi-Sleeve For Dana 44 & 8.5" GM

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$83.99
Replacement front axle inner seal redi-sleeve for Dana 44 & 8.5″ GM.Yukon Mighty seal.

Product Features:
  • Axle Redi-sleeve
  • Fits Dana Spicer 44
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National – Multi Purpose Seal (Part No.4529N)

Multi Purpose Seal

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$12.79
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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USA Standard Gear – Spartan Locker for Dana 44 Differential with 30 Spline Axles, Includes Heavy-duty Cross Pin Shaft (Part No.17001)

Spartan Locker for Dana 44 Differential with 30 Spline Axles, Includes Heavy-duty Cross Pin Shaft

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$669.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect.

Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Yukon Gear – Eaton-Type Positraction Carbon Clutch Kit With 14 Plates For GM 14T And 10.5" (Part No.16112)

Eaton-Type Positraction Carbon Clutch Kit With 14 Plates For GM 14T And 10.5"

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$304.99
Yukon 1480 Lifetime Series U/Joint. 4.188″ snap ring span, 1.375″ cap diameter. Outside snap ring.

Product Features:
  • Clutch kit
  • Fits GM 10.5″ 14 bolt truck with Eaton positraction
  • Carbon fiber clutches
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Yukon Gear – 8.5" GM Extra HD Standard Open Case (Uses Larger Bearings) (Part No.20084)

8.5" GM Extra HD Standard Open Case (Uses Larger Bearings)

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$232.99
8.5″ GM EXTRA HD standard Open case (uses larger bearings).

Product Features:
  • Standard open carrier case
  • Fits GM 8.5″ with 28 or 30 spline axles
  • 2.73 and up ratio only
  • Does not include spider gears
  • Has larger carrier carrier bearing journals for high strength
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Dorman – Spindle Washer – I.D. 1 In.-5/8 In. O.D. 2-1/2 In. Thickness 7/64 In. (Part No.618-041.1)

Spindle Washer - I.D. 1 In.-5/8 In. O.D. 2-1/2 In. Thickness 7/64 In.

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$5.79
This spindle nut washer 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 spindle nut washer matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this washer is a reliable replacement for an original part that is missing or has failed due to wear
  • 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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Yukon Gear – U/Joint Strap Bolt For 14T, 7.5", And 8.5" GM (Part No.33351)

U/Joint Strap Bolt For 14T, 7.5", And 8.5" GM

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$8.49
U/joint strap bolt for 14T, 7.5″, and 8.5″ GM.

Product Features:
  • u-joint strap bolt for GM 10.5″ 14 bolt truck, 7.5″ and 8.5″
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Motive Gear – Axle Shaft (Part No.GM10FAXR)

Axle Shaft

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$207.99
The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

Product Features:
  • GM 10BL 8.5 AXLE RIGHT SIDE, 77-87 1/2 & 3/4 TON
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Felpro – Differential Cover Gasket (Part No.RDS 55477)

Differential Cover Gasket

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$87.99
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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Richmond Gear – Differential Cross Shaft (Part No.80-0272-1)

Differential Cross Shaft

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$66.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

Product Features:
  • For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
  • The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
  • Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
  • Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
  • Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
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National – Bearings (Part No.110-L)

Bearings

from

$83.99
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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Yukon Gear – Dana 25 / 27 / 30 / 36 / 44 / 53 Pinion Nut Washer Replacement (Part No.33163)

Dana 25 / 27 / 30 / 36 / 44 / 53 Pinion Nut Washer Replacement

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$3.99
Replacement pinion nut washer for Dana 25, 27, 30, 36, 44 & 53.

Product Features:
  • Pinion nut washer for Dana Spicer 25, 27, 30, 44 and 50
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Yukon Gear – Positraction Internals For 8.5" GM With 28 Spline Axles (Part No.16052)

Positraction Internals For 8.5" GM With 28 Spline Axles

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$336.99
Yukon positraction internals (0.795″ diameter) for 8.5″ GM with 28 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects. This kit is compatible with Yukon Dura Grip or Eaton positractions. It will not fit a factory Gov-Loc positraction.

Product Features:
  • Spider gear kit
  • Fits GM 8.5″ with 28 spline Dura Grip positraction
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Popular 1981 GMC K2500 Drivetrains Categories

1981 GMC K2500 Drivetrains

You count on your 1981 GMC K2500 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 Drivetrains. With 475 Drivetrains ranging in price from $0.91 to $1,355.00, you’re sure to find everything you need for your 1981 GMC K2500.

Brands matter. If you want to shop a specific Drivetrains brand, we stock 22 different brands like Moog, Valvoline, and Felpro. 1981 GMC K2500 Drivetrains start as low as $0.91!

One of the best ways to find top quality OEM or aftermarket Drivetrains is by asking professionals. Short of that, you can shop with confidence thanks to our 4,860 extensive product reviews on 1981 GMC K2500 Drivetrains. Some of the top-rated Drivetrains products we carry are Greaseable Super Strength Universal Joint with 3.8 stars and Greaseable Super Strength Universal Joint with 4.4 stars.

Did we mention you can order your Drivetrains 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 Drivetrains inventory for your 1981 GMC K2500 below to get started!

Top-Rated Drivetrains Brands For Your 1981 GMC K2500

Trusted Drivetrains OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1981 GMC K2500 running right for years to come. In our inventory you’ll find brands like Moog, Valvoline, Felpro, and even more.

Popular Mr. Gasket Drivetrains

You’ll find popular Mr. Gasket brand products across Differentials. All are waiting to get your 1981 GMC K2500 back on the road. Some of the top-rated Mr. Gasket products in these categories are:
Differential Gasket
from $18.09
(1)
Differential Gasket
Rear Differential Cover Gaskets

FAQs for 1981 GMC K2500 Drivetrains

What are the most purchased Drivetrains for the 1981 GMC K2500?

Out of 475 Drivetrains for the 1981 GMC K2500, the most popular in our inventory are:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets
Universal Joint
from $15.99
(52)
Universal Joint
U-Joints

What are the top-rated 1981 GMC K2500 Drivetrains?

Top-rated Drivetrains for your 1981 GMC K2500 based on customer reviews/ratings are:
Greaseable Super Strength Universal Joint
from $36.99
(41)
Greaseable Super Strength Universal Joint
“Easy install and great way to have sting durability with access to grease points”
Greaseable Super Strength Universal Joint
from $47.99
(39)
Greaseable Super Strength Universal Joint
“Great”
Greaseable Super Strength Universal Joint
from $32.99
(37)
Greaseable Super Strength Universal Joint
“grease fitting I like location dont like needle design to grease should be regular design fitting”