1977 Chevrolet K20 Differential Spools

Enhance and Protect Your 1977 Chevrolet K20 with Quality Differential Spools

Maintaining the performance of your 1977 Chevrolet K20 starts with choosing the right parts, and high-quality Differential Spools help ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Differential Spools specifically for the 1977 Chevrolet K20, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Differential Spools for Every Budget

Finding affordable, quality Differential Spools is easy at Advance Auto Parts. With prices starting as low as $101.99 and an average price of $302.55, you can choose one that fits your budget while delivering the quality you expect. Our Differential Spools are competitively priced, ranging from $101.99 to $669.99, so you get value without compromising on strength or reliability.

Explore Related Parts for a Complete Solution

To further enhance your 1977 Chevrolet K20, don’t miss our related parts categories, including Differential Oil and Rear Differential Cover Gaskets. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.
Please Select your Vehicle to See Exact Fit Parts

Differential Spools for Your 1977 Chevrolet K20

Yukon Gear – Steel Spool for GM 14 Bolt Truck with 30 Spline Axles, 4.10 & Down (Part No.32048)

Steel Spool for GM 14 Bolt Truck with 30 Spline Axles, 4.10 & Down

from

$539.99
Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:
  • Fits GM 10.5″ 14 bolt truck with 30 spline axles
  • 4.10 and down ratio only or 4.56 and up thick gears
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

Yukon Gear – Mini Spool for GM 10.5" 14 Bolt Truck (Part No.32301)

Mini Spool for GM 10.5" 14 Bolt Truck

from

$287.99
Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:
  • Fits 10.5″ GM 14 bolt truck
  • Provides 100% traction to both wheels at all times
  • Installs into standard open carrier case
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Yukon Gear – Mini Spool for GM 8.5" with 30 Spline Axles (Part No.32233)

Mini Spool for GM 8.5" with 30 Spline Axles

from

$188.99
Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:
  • Fits GM 8.5″ with 30 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

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

from

$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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USA Standard Gear – Differential Open Unit/Component (Part No.17041)

Differential Open Unit/Component

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 Limited 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
See More

USA Standard Gear – Spartan Locker For GM 8.5" With 28 Spline Axles, Includes Heavy-Duty Cross Pin Shaft (Part No.17040)

Spartan Locker For GM 8.5" With 28 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 28 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
See More

Yukon Gear – Steel Spool for Dana 44 with 30 Spline Axles, 3.92 & Up (Part No.32041)

Steel Spool for Dana 44 with 30 Spline Axles, 3.92 & Up

from

$338.99
Yukon Full Spools are a cost-effective way to convert a diff to 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each Yukon spool is made from high-quality 8620 steel and heat treated for additional strength. A spool is an outstanding choice for dedicated off-road and drag racing vehicles only.

Product Features:
  • Fits Chrysler Dana Spicer 44 with 30 spline axles
  • 3.92 and up ratio only
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

Yukon Gear – Dana 44 Steel Spool Replacement (Part No.32168)

Dana 44 Steel Spool Replacement

from

$314.99
Yukon Full Spools are a cost-effective way to convert a diff to 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each Yukon spool is made from high-quality 8620 steel and heat treated for additional strength. A spool is an outstanding choice for dedicated off-road and drag racing vehicles only.

Product Features:
  • Fits Chrysler Dana Spicer 44 with 30 spline axles
  • 3.73 and down ratio only
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

USA Standard Gear – Differential Open Unit/Component (Part No.59015)

Differential Open Unit/Component

from

$289.99
Product Features:
  • Fits Chrysler Dana Spicer 44 with 30 spline axles
  • 3.92 and up ratio only
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

USA Standard Gear – Differential Open Unit/Component (Part No.59013)

Differential Open Unit/Component

from

$282.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:
  • Fits Chrysler Dana Spicer 44 with 30 spline axles
  • 3.73 and down ratio only
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

Yukon Gear – Mini Spool for Dana Spicer 44 with 30 Spline Axles (Part No.32055)

Mini Spool for Dana Spicer 44 with 30 Spline Axles

from

$194.99
Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

Motive Gear – Differential Spool (Part No.FS10-28)

Differential Spool

from

$187.99


Product Features:
  • FULL SPOOL GM 10 BOLT 8.5 28 SPL ST
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Motive Gear – Differential Spool (Part No.FSD60-35L)

Differential Spool

from

$181.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.

Product Features:
  • FULL SPOOL DANA 60 35 SPLINE 4.56 & UP
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Yukon Gear – Mini Spool for GM 8.5" with 28 Spline Axles (Part No.32232)

Mini Spool for GM 8.5" with 28 Spline Axles

from

$165.99
Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:
  • Fits GM 8.5″ with 28 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

USA Standard Gear – Differential Open Unit/Component (Part No.59021)

Differential Open Unit/Component

from

$149.99
Replacement front spindle for Dana 44, Ford F150, 5 hole (approx. 6″ OD).

Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

USA Standard Gear – Differential Open Unit/Component (Part No.59011)

Differential Open Unit/Component

from

$139.99
Product Features:
  • Fits GM 8.5″ with 28 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
  • Mini spool
See More

Motive Gear – Differential Mini Spool (Part No.MS12C)

Differential Mini Spool

from

$108.99


Product Features:
  • MINI SPOOL GM12 BOLT CAR & TRUCK STRANGE # 088430
See More

Motive Gear – Differential Mini Spool (Part No.MSD44-30)

Differential Mini Spool

from

$101.99


Product Features:
  • MINI SPOOL – DANA 44, 30 SPL.
See More

FAQs for 1977 Chevrolet K20 Differential Spools

Which Differential Spools are the top sellers for the 1977 Chevrolet K20?

Out of 18 Differential Spools that fit 1977 Chevrolet K20s, the following parts are the top sellers:
Mini Spool for GM 8.5" with 30 Spline Axles
from $188.99
This product is not rated
Mini Spool for GM 8.5" with 30 Spline Axles
Differential Spools
Steel Spool for GM 14 Bolt Truck with 30 Spline Axles, 4.10 & Down
from $539.99
This product is not rated
Steel Spool for GM 14 Bolt Truck with 30 Spline Axles, 4.10 & Down
Differential Spools
Mini Spool for GM 10.5" 14 Bolt Truck
from $287.99
This product is not rated
Mini Spool for GM 10.5" 14 Bolt Truck
Differential Spools

How can I make sure that a part will be compatible with my 1977 Chevrolet K20?

Our Chevrolet K20 aftermarket and OEM parts are designed specifically for the 1977 model. You can always find your specific fitment and compatibility for your 1977 Chevrolet on an individual product page.

What is the price range for 1977 Chevrolet K20 Differential Spools?

The range of prices of Differential Spools for the 1977 Chevrolet K20 goes from $101.99 up to $669.99 for the most premium parts.

What is the average price of 1977 Chevrolet K20 Differential Spools?

1977 Chevrolet K20 Differential Spools average $302.55 for our selection of OEM and aftermarket parts.

Does Advance Auto Parts sell Differential Spools for other Chevrolet K20 model years?

Yes, we currently stock Differential Spools for 10 model years of Chevrolet K20s, from 1975 to 1986. Model years 1986, 1985, 1984, 1983, 1982, 1981, 1980, 1979, and 1978 are the most popular for Differential Spools purchases.

Can I get help with 1977 Chevrolet K20 Differential Spools orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Chevrolet Differential Spools and more.

What is your return policy for Chevrolet K20 Differential Spools?

Advance Auto Parts keeps returns simple. For new Chevrolet K20 Differential Spools and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.