1977 GMC K15 Differentials

Essential 1977 GMC K15 Differentials

National – Taper Bearing Cone (Part No.LM501349)

Taper Bearing Cone

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$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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Yukon Gear – Cast Yoke For GM 8.5" With A 1350 U/Joint Size (Part No.41092)

Cast Yoke For GM 8.5" With A 1350 U/Joint Size

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$234.99
Yukon cast yoke for GM 8.5″ with a 1350 U/joint size. 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring. This yoke uses straps. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits GM 8.5″
  • 30 spline
  • 1350 u-joint size
  • Outside snap ring design
  • 3.625″ snap ring span
  • 1.188″ cap diameter
  • Strap style
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Yukon Gear – Dana 44 Cover Gasket Replacement (Part No.23006)

Dana 44 Cover Gasket Replacement

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$12.99
Product Features:
  • Cover gasket
  • Fits Dana Spicer 44
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Yukon Gear – Set Up Bearing (Part No.56037)

Set Up Bearing

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$189.99
Set-up carrier bearing (2 bearings, no races) 25590. No return.

Product Features:
  • Set up bearing kit
  • Fits Dana Spicer 44
  • Easily slips on and off carrier journals to allow for easier carrier shim adjustment
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Yukon Gear – Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt (Part No.33286)

Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt

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$9.99
5/16″-18 cover bolt, Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, Chrysler 9.25 rear, GM 7.5″, 7.625″, 8.2″, 8.5″, 12 bolt passenger car and truck.

Product Features:
  • Cover bolt for Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, GM 7.5″, 7.625″, 8.2″, 8.5″ and 12 bolt passenger car and truck.
  • 1/2″ head
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Yukon Gear – Positraction Shim Kit (18 Shims) For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron ‘Vette (Part No.16042)

Positraction Shim Kit (18 Shims) For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron 'Vette

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$41.99
Product Features:
  • Shim kit
  • Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ Dura Grip positraction
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Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

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$148.99
Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
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Yukon Gear – Bearing Install Kit For GM 8.5" Front Differential (Part No.11068)

Bearing Install Kit For GM 8.5" Front Differential

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$225.99
Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses Timken bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and 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 ring & pinion set.

Product Features:
  • Fits GM 8.5″ front
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, marking compound and brush.
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Yukon Gear – Replacement Oil Baffle For Dana 44 (Part No.33000)

Replacement Oil Baffle For Dana 44

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$6.99
Product Features:
  • Oil baffle for Dana Spicer 44
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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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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"

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$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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Felpro – Differential Cover Gasket (Part No.RDS 30031)

Differential Cover Gasket

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$8.79
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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Pro-King – Differential Pinion Seal (Part No.743B070A)

Differential Pinion Seal

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$23.49
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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Yukon Gear – Minor Install Kit For GM 8.5" Front Differential (Part No.12056)

Minor Install Kit For GM 8.5" Front Differential

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$92.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush. (includes Supershims)

Product Features:
  • Fits GM 8.5″ front
  • Included are a pinion seal, crush sleeve, complete shim kit, marking compound and brush.
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Yukon Gear – Differential (Part No.26052)

Differential

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$709.99
Differential

Yukon Gear – Dana 44 Complete Shim Kit Replacement (Part No.55021)

Dana 44 Complete Shim Kit Replacement

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$51.99
Product Features:
  • Complete shim kit for Dana Spicer 44
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Yukon Gear – Front 4340 Axle Kit For Dana 44’69-’80 GM Truck And Blazer, Dana 44 With 19/30 Splines (Part No.21413)

Front 4340 Axle Kit For Dana 44'69-'80 GM Truck And Blazer, Dana 44 With 19/30 Splines

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$1065.00
Yukon front 4340 Chrome-Moly replacement axle kit for Dana 44’69-’80 GM truck and Blazer, Dana 44 with 19/30 splines. Yukon 4340 Chrome-Moly axles provide up to 50% increased strength over stock axles for use in extreme performance applications with large tires and high horsepower. Yukon’s 4340 axles are manufactured using the latest technologies and the highest quality materials to ensure high strength and long life. This kit comes with inner & outer axles for both left and right sides along with Spicer universal joints. Limited Lifetime warranty covers manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through Randy’s ring & pinion) makes final determination on warranty considerations.

Product Features:
  • Front axle kit
  • Fits 1969-1980 GM half ton front with Dana Spicer 44
  • 4340 Chromoly axles
  • 30 spline inner axles
  • Includes inner and outer axle shafts with Spicer u-joints
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Mr. Gasket – Differential Cover Kit (Part No.9895)

Differential Cover Kit

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$72.39
The Mr. Gasket chrome plated rear end cover is made from heavy-gauge steel, and comes complete with bolts and gaskets.

Product Features:
  • Chrome plated steel for looks
  • Includes bolts and gasket
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National – Shaft Repair Sleeve (Part No.99138)

Shaft Repair Sleeve

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$27.49
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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Yukon Gear – Replacement Standard Open Carrier Case For Dana 44, 30 Spline, 3.73 & Down (Part No.20027)

Replacement Standard Open Carrier Case For Dana 44, 30 Spline, 3.73 & Down

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$194.99
Yukon replacement standard open carrier case for Dana 44, 30 spline, 3.73 & down, 2-1/8″ tall.

Product Features:
  • Standard open carrier case
  • Fits Dana Spicer 44 with 30 spline axles
  • 3.73 and down ratio only
  • Does not include spider gears
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Richmond Gear – Differential Ring And Pinion (Part No.69-0350-1)

Differential Ring And Pinion

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$350.99
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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Yukon Gear – 20 Long Air Line For Zip Locker (Part No.34002)

20 Long Air Line For Zip Locker

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$29.99
20 long air line for Zip Locker.

Product Features:
  • Air line
  • 20′ in length
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Yukon Gear – Power Lok Positraction Internals For Dana 44 And Chysler 8.75" With 30 Spline Axles (Part No.16005)

Power Lok Positraction Internals For Dana 44 And Chysler 8.75" With 30 Spline Axles

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$503.99
Yukon Power Lok positraction replacement internals for Dana 44 and Chysler 8.75″ with 30 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.

Product Features:
  • Spider gear kit
  • Fit Dana Spicer 44 and Chrysler 8.75″ Powr Lok positraction
  • Includes two side gears, four pinion gears, cross pin shafts and side gear thrust washers.
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USA Standard Gear – Spartan Spring & Pin Kit, Fits Smaller Designs (Part No.17011)

Spartan Spring & Pin Kit, Fits Smaller Designs

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$26.99
Spartan spring & pin kit, fits smaller designs.

Product Features:
  • Replacement spring and pin kit for Spartan Locker
  • Fits Dana 30, Dana 44, AMC Model 20, AMC Model 35, and Toyota designs
  • Includes 4 springs and 4 alignment pins
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Yukon Gear – Notched Cross Pin Shaft For 12P And 12T GM (Part No.33429)

Notched Cross Pin Shaft For 12P And 12T GM

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$51.99
Notched cross pin shaft for 12P and 12T GM. This cross pin shaft is not compatible with Powertrax Lock Rights or Spartan Lockers.

Product Features:
  • Cross pin shaft
  • Fits GM 12 bolt passenger car and truck
  • Notched
  • Not compatible with Spartan Lockers or Lock Rights
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Pro-King – Differential Cross Shaft (Part No.742G673)

Differential Cross Shaft

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$28.49
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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Motive Gear – Differential Gear Install Kit (Part No.D44IK)

Differential Gear Install Kit

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$61.99


Product Features:
  • MINI INSTALL KIT DANA 44
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Richmond Gear – RngPnnInstlKt (Part No.83-1018-B)

RngPnnInstlKt

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$39.49
RngPnnInstlKt

Popular 1977 GMC K15 Differentials Categories

1977 GMC K15 Differentials

Maybe you’re in the middle of a full rebuild of that 1977 GMC K15. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 441 different Differentials in our inventory ranging from $0.91 to $1,674.99. That means you can find the exact parts or products you need to keep that 1977 GMC K15 running smoothly.

Differentials are only as good as their brand. We stock 14 different brands to make sure you have plenty of trusted parts to choose from for your 1977 GMC K15. Valvoline, Felpro, and Yukon Gear are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 1977 GMC K15, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 2,944 reviews in this category, some of the top rated parts include Differential Ring And Pinion with 4.2 stars and Axle Housing Cover Gasket with 4.3 stars.

So if you’re in the market for aftermarket Differentials to keep your 1977 GMC K15 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 1977 GMC K15 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1977 GMC K15 demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your K15 the best it can be. Be sure to browse some of our top Differentials brands and parts.

FAQs for 1977 GMC K15 Differentials

What are the most purchased Differentials for the 1977 GMC K15?

Out of 441 Differentials for the 1977 GMC K15, the most popular in our inventory are:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
Differential Pinion Shaft Lock Bolts
3 Qt - Penzoil 80W90 Conventional Gear Oil
from $44.99
This product is not rated
3 Qt – Penzoil 80W90 Conventional Gear Oil
Differential Oil

What are the top-rated 1977 GMC K15 Differentials?

Top-rated Differentials for your 1977 GMC K15 based on customer reviews/ratings are:
Differential Ring And Pinion
from $342.99
(23)
Differential Ring And Pinion
“So far so good.”
Axle Housing Cover Gasket
from $6.49
(10)
Axle Housing Cover Gasket
“fit perfectly and was easy to work with.no more leaking rear differential.”
Bearings
from $15.99
(9)
Bearings
“as advertised”