GMC K15 Differentials

Your One-Stop Shop For Trusted GMC K15 Differentials

If you’re in search of GMC K15 Differentials aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 449 Differentials from top brands with prices ranging from $0.91 to $1,969.99.

Beyond great prices, we stock trusted brands manufacturing all types of Differentials for your GMC K15. Of the 15 OEM and aftermarket parts brands we carry, some of the most popular are Valvoline, FELPRO, and Yukon Gear.

And don’t forget to read customer reviews across all Differentials categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Differentials have to cost top dollar, and we prove it. Browse our top GMC K15 Differentials below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential GMC K15 Differentials

USA Standard Gear – Spartan Locker For GM 8.5" With 30 Spline Axles, Includes Heavy-Duty Cross Pin Shaft (Part No.17041)

Spartan Locker For GM 8.5" With 30 Spline Axles, Includes Heavy-Duty Cross Pin Shaft

from

$649.99
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 GM 18.5″ with 30 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Felpro – DIFFERENTIAL GASKET (Part No.RDS 55075)

DIFFERENTIAL GASKET

from

$8.29
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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Yukon Gear – Steel Cover For Dana 44 Standard Rotation (Part No.32319)

Steel Cover For Dana 44 Standard Rotation

from

$129.99
Product Features:
  • Fits standard rotation Dana Spicer 44
  • Steel
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Driveworks – Taper Bearing Cup (Part No.S-LM-501314)

Taper Bearing Cup

from

$7.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Pro-King – Differential Ring Gear Bolt (Part No.742E935)

Differential Ring Gear Bolt

from

$1.49
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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Dorman – Differential Pinion Yoke Assembly (Part No.697-553)

Differential Pinion Yoke Assembly

from

$221.99
Worn or damaged differential end yoke causing driveline vibrations? This direct replacement end yoke matches the original equipment part for a trustworthy repair and reliable performance.

Product Features:
  • Direct replacement – this differential end yoke matches the fit and construction of the original yoke.
  • Excellent value – this replacement end yoke offers original equipment quality at a fraction of the price of dealer parts.
  • Quality materials – this end yoke is machined from cast iron for strength and is precision machined for reliability
  • Validated fit – this differential end yoke has been tested to confirm accurate fit
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Felpro – Axle Housing Cover Gasket (Part No.RDS 6629)

Axle Housing Cover Gasket

from

$6.49
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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(10 reviews)
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Motive Gear – Differential Crush Sleeve (Part No.3954482)

Differential Crush Sleeve

from

$5.49


Product Features:
  • CRUSH SLV 8 7/8 12BLT TRK
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Yukon Gear – Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement (Part No.33283)

Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement

from

$5.99
Product Features:
  • Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
  • 0.030″ thick
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Yukon Gear – Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75" (Part No.33536)

Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75"

from

$67.99
Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses t

Product Features:
  • Powr Lok button kit
  • Fits Dana Spicer 30, 44 and Chrysler 8.75″
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Motive Gear – Differential Gear Install Kit (Part No.GM8.5IK)

Differential Gear Install Kit

from

$65.99


Product Features:
  • MINI INSTALL KIT GM 8.5 REAR
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Yukon Gear – GM 12 Bolt Truck Cover Gasket (Part No.23015)

GM 12 Bolt Truck Cover Gasket

from

$12.99
12T cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 12 bolt truck
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Yukon Gear – Pinion Nut (Part No.33152)

Pinion Nut

from

$9.99
Pinion nut for GM 7.2″ IFS, 7.5″, 7.6″, 7.6″ IFS, 8.0″, 8.25″, 8.5″, 8.6″, 9.25″ IFS, 9.5″ & Oldsmobile Dropouts. 1 1/4″ socket, 7/8″ x 14 thread.

Product Features:
  • Pinion nut for GM 7.2″, 7.5″, 7.625″, 8.0″, 8.25″ IFS, 8.5″, 8.6″, 9.25″ IFS and 9.5″
  • 7/8″ x 14 thread
  • 1 1/4″ socket
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Yukon Gear – Pinion Install Kit For GM 8.5" Front Differential (Part No.13070)

Pinion Install Kit For GM 8.5" Front Differential

from

$173.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits GM 8.5″ front
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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National – Shaft Repair Sleeve (Part No.99155)

Shaft Repair Sleeve

from

$38.49
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:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Richmond Gear – Differential Mini Spool (Part No.78-1028-1)

Differential Mini Spool

from

$124.99
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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USA Standard Gear – 12 Bolt GM Spartan Locker Cross Pin (Part No.17023)

12 Bolt GM Spartan Locker Cross Pin

from

$49.99
Product Features:
  • USA Standard Gear heavy-duty cross pin shaft
  • Fits GM 12 bolt car and truck and 9.5″ Toyota Landcruiser
  • Works with Spartan Locker or standard open spider gears
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National – Bearings (Part No.02820)

Bearings

from

$9.99
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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Pro-King – Differential Pinion Shim Kit (Part No.742G202)

Differential Pinion Shim Kit

from

$5.99
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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Driveworks – Oil Seal (Part No.S-5778)

Oil Seal

from

$10.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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(3 reviews)
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Yukon Gear – Dana 30 & Dana 44 Power Lok Bolt, Left Hand, & 8.75" Chrysler & 55P (Part No.33234)

Dana 30 & Dana 44 Power Lok Bolt, Left Hand, & 8.75" Chrysler & 55P

from

$26.99
Dana 30 & Dana 44 Power Lok bolt, left hand, & 8.75″ Chrysler & 55P.

Product Features:
  • Power Lok case bolt for Dana Spicer 30, Dana Spicer 44, Chrysler 8.75″ and 1955-1964 GM passenger car
  • Left hand thread
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Richmond Gear – RngPnn (Part No.49-0019-1)

RngPnn

from

$399.99
RngPnn
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Motive Gear – Differential Ring and Pinion (Part No.GM12-308)

Differential Ring and Pinion

from

$293.99


Product Features:
  • GM 12BL 8.875 R/P 3.08 MG
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Yukon Gear – Replacement Clutch Set For Dana 44 Powr Lok, Smooth (Part No.16152)

Replacement Clutch Set For Dana 44 Powr Lok, Smooth

from

$177.99
Product Features:
  • Clutch kit
  • Fit Dana Spicer 44 and Chrysler 8.75″ Powr Lok positraction
  • Smooth design
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Yukon Gear – Powr Lok Belleville Clutch Plate, Splined (Part No.16174)

Powr Lok Belleville Clutch Plate, Splined

from

$36.99
Product Features:
  • Belleville plate, splined
  • Fits Dana Spicer 44 Powr Lok
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GMC K15 Differentials List

Differential Oil
Differential Oil
Rear Differential Cover Gaskets
Rear Differential Cover Gaskets
Differential Open Unit and Components
Differential Open Unit and Components
Differential Covers
Differential Covers
Differential Pinion Shaft Lock Bolts
Differential Pinion Shaft Lock Bolts
Differential Bearings
Differential Bearings
Differential Axle Shafts
Differential Axle Shafts
Differential Pinion Pilot Bearings
Differential Pinion Pilot Bearings
Front Housing Cover Gaskets
Front Housing Cover Gaskets
Differential Cover Bolts
Differential Cover Bolts
Differential Carriers
Differential Carriers
Differential Bearing Kits
Differential Bearing Kits

Differentials Brands You Can Trust For Your GMC K15

15 trusted brands of Differentials line our shelves, ready to help keep your GMC K15 running smooth. Below are some of the most popular brands and their top Differentials offerings:

Top GMC K15 Differentials from Felpro

Your GMC K15 will be purring again thanks to Felpro brand Differentials available for online order or in-store pick up. Popular Felpro parts include:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Differential Cover Gaskets
Axle Housing Cover Gasket
from $6.49
(10)
Axle Housing Cover Gasket
Rear Housing Cover Gaskets
DIFFERENTIAL GASKET
from $7.99
(3)
DIFFERENTIAL GASKET
Rear Housing Cover Gaskets

Most Purchased GMC K15 Differentials from Valvoline

When you buy the most frequently purchased Valvoline brand Differentials, you can be confident it will be the right part for your GMC K15. Here are the Valvoline Differentials Advanced Auto customers buy the most:
DEX/MERC Automatic Transmission Fluid, 1 Gallon
from $35.99
(17)
DEX/MERC Automatic Transmission Fluid, 1 Gallon
Differential Oil
DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
from $14.49
(2)
DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
Differential Oil
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Differential Cover Gaskets

FAQs for GMC K15 Differentials

What are the most purchased Differentials for the GMC K15?

Out of 449 Differentials for the GMC K15, the most popular in our inventory are:
3 Qt - 80W90 Conventional Gear Oil With Posi Additive
from $57.99
This product is not rated
3 Qt – 80W90 Conventional Gear Oil With Posi Additive
Differential Oil
Bearings
from $23.99
(7)
Bearings
Front Differential Pinion Bearings
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
Differential Pinion Shaft Lock Bolts

What are the top-rated GMC K15 Differentials?

Top-rated Differentials for your GMC K15 based on customer reviews/ratings are:
Differential Ring And Pinion
from $350.99
(7)
Differential Ring And Pinion
“Great spark plugs.”
Differential Ring and Pinion
from $241.99
(4)
Differential Ring and Pinion
“Perfect match and easy install”
Multi Purpose Seal
from $23.29
(4)
Multi Purpose Seal
“Works well fit right in. Love national seals”

More Popular Parts for All Makes