1981 Chevrolet K20 Differential Axle Shafts

Your 1981 Chevrolet K20 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Differential Axle Shafts you desperately need.

We currently carry 15 Differential Axle Shafts to choose from for your 1981 Chevrolet K20, and our inventory prices range from as little as $63.99 up to $1,347.99.

On top of low prices, Advance Auto Parts offers 6 different trusted brands of Differential Axle Shafts for the 1981 Chevrolet K20. We only sell parts from trusted brands like Motive Gear so that you can find quality parts you can count on.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Differential Axle Shafts stock in-person!

Differential Axle Shafts for Your 1981 Chevrolet K20

USA Standard Gear – 4340 Axle Kit For ’79-’87 GM Truck & Blazer, GM 8.5", 28Spline With Spicer Joints (Part No.35064)

4340 Axle Kit For '79-'87 GM Truck & Blazer, GM 8.5", 28Spline With Spicer Joints

from

$825.99
Product Features:
  • Front axle kit
  • Fits 1979-1987 GM half ton front with GM 8.5″
  • 4340 Chromoly axles
  • 28 spline inner axles
  • Includes inner and outer axle shafts with Spicer u-joints
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Motive Gear – Axle Shaft (Part No.GM10FAXL)

Axle Shaft

from

$259.99
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 LEFT SIDE, 77-87
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Dorman – Rear Axle Shaft, Left or Right (Part No.630-137)

Rear Axle Shaft, Left or Right

from

$304.99
Axle shaft damaged or bearings worn out? This axle shaft directly replaces the original equipment on certain vehicles, complete with all necessary application-specific installation components.

Product Features:
  • Direct replacement – this axle shaft replaces the original equipment on specific vehicle years, makes and models
  • Complete kit – each shaft includes critical installation hardware and components needed for specific vehicle applications
  • Durable construction – designed to rigorous standards and tested to ensure performance
  • Trustworthy solution – backed by team of engineers and quality control specialists in the United States
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Motive Gear – Axle Shaft (Part No.GM10FAXR)

Axle Shaft

from

$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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USA Standard Gear – 4340 Chrome-Moly Axle, ’79-’87 GM Truck & Blazer, Rh Inner, 28Spl, Uses 5-760X U/Joint (Part No.35087)

4340 Chrome-Moly Axle, '79-'87 GM Truck & Blazer, Rh Inner, 28Spl, Uses 5-760X U/Joint

from

$146.99
19.15″ 28spline inner Right hand axle 8.5″ 79-87 GM truck & Blazer.

Product Features:
  • 28 spline
  • 19.15″ long
  • Fits GM 8.5″ in 1979-1987 GM
  • Left hand inner
  • 5-760X U-joint size
  • 4340 Chromoly
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Spicer – FRONT AXLE SHAFT (Part No.41677)

FRONT AXLE SHAFT

from

$141.99
FRONT AXLE SHAFT

Motive Gear – Axle Shaft (Part No.41677R)

Axle Shaft

from

$63.99
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 ’73-87 SHAFT OUTER 1/2 & 3/4 TON 19SP-JEEP ’74-92 W/ DISK BRAKES
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USA Standard Gear – 4340 Axle Kit For ’79-’87 GM Truck & Blazer, GM 8.5", 28 Spline With Super Joints (Part No.35130)

4340 Axle Kit For '79-'87 GM Truck & Blazer, GM 8.5", 28 Spline With Super Joints

from

$1347.99
Product Features:
  • 28 spline inner and 19 spline outer
  • Fits GM 8.5″ in 1979-1987 GM 1/2 ton
  • Includes inner and outer 4340 Chromoly axles and Yukon Super Joints
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Yukon Gear – 1541H Alloy 8 Lug Rear Axle For GM 9.5" ’81-’95 Truck And ’83-’96 G30 (Part No.21252)

1541H Alloy 8 Lug Rear Axle For GM 9.5" '81-'95 Truck And '83-'96 G30

from

$429.99
Yukon 1541H alloy 8 lug rear axle for GM 9.5″ ’81-’95 truck and ’83-’96 G30 with a length of 32-3/4″ inches and 33 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a C-clip axle.

Product Features:
  • 33 spline
  • 8 lug
  • 32.75″ long
  • Fits GM 9.5″ in 1981-1995 truck and 1983-1996 G30 van
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Yukon Gear – 1541H Inner Axle For ’78 And Newer 8.5" GM (Part No.21122)

1541H Inner Axle For '78 And Newer 8.5" GM

from

$383.99
Yukon 1541H inner axle for ’78 and newer 8.5″ GM with a length of 35.5 inches and with 28 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy front axles come with a one year warranty against manufacturing defects.

Product Features:
  • 28 spline
  • 35.5″ long
  • Fits GM 8.5″ in 1979-1991 GM 1/2 ton
  • Left hand inner
  • 5-760X U-joint size
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Yukon Gear – Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60 (Part No.21005)

Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60

from

$279.99
Full-floating, 35 spline diameter, non-drilled blank axle shaft for Dana 60. 40″ inches long. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H axles come with a one year warranty against manufacturing defects.
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Pro-King – Rear Axle Shaft Kit (Part No.AXK-184)

Rear Axle Shaft Kit

from

$237.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and funtion.

Product Features:
  • High strength steel
  • Dual heat treating process
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Yukon Gear – 4340 Chrome-Moly Right Hand Inner Axle For ’79-’87 GM 8.5" Blazer And Truck, Uses 5-760X U/J (Part No.21365)

4340 Chrome-Moly Right Hand Inner Axle For '79-'87 GM 8.5" Blazer And Truck, Uses 5-760X U/J

from

$229.99
Yukon 4340 Chrome-Moly right hand inner axle for ’79-’87 GM 8.5″ Blazer and truck with a length of 19.51″ and 28 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. 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:
  • Fits 1979-1987 GM half ton front with GM 8.5″
  • 4340 Chromoly
  • Right hand side inner
  • 28 spline
  • 19.15″ from end of splines to center of u-joint bore
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Yukon Gear – 4340 Chrome-Moly Left Hand Inner Axle For ’79-’87 GM 8.5" Blazer And Truck, Uses 5-760X U/J (Part No.21366)

4340 Chrome-Moly Left Hand Inner Axle For '79-'87 GM 8.5" Blazer And Truck, Uses 5-760X U/J

from

$215.99
Yukon 4340 Chrome-Moly left hand inner axle for ’79-’87 GM 8.5″ Blazer and truck with a length of 35.46″ and 28 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. 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:
  • Fits 1979-1987 GM half ton front with GM 8.5″
  • 4340 Chromoly
  • Left hand side inner
  • 28 spline
  • 35.46″ from end of splines to center of u-joint bore
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USA Standard Gear – 4340 Chrome Moly Axle Shaft, Left Hand Inner For ’79-’87 GM, 35.46", Uses 5-760X U/Joint (Part No.35088)

4340 Chrome Moly Axle Shaft, Left Hand Inner For '79-'87 GM, 35.46", Uses 5-760X U/Joint

from

$192.99
35.46″ 28spline inner left hand axle 8.5″ 79-87 GM truck & Blazer.

Product Features:
  • 28 spline
  • 35.46″ long
  • Fits GM 8.5″ in 1979-1987 GM
  • Right hand inner
  • 5-760X U-joint size
  • 4340 Chromoly
See More

FAQs for 1981 Chevrolet K20 Differential Axle Shafts

What are the most popular Differential Axle Shafts for the 1981 Chevrolet K20?

With 6 brands you can trust, our most popular Differential Axle Shafts for the 1981 Chevrolet K20 parts are:
4340 Chrome-Moly Axle, '79-'87 GM Truck & Blazer, Rh Inner, 28Spl, Uses 5-760X U/Joint
from $146.99
This product is not rated
4340 Chrome-Moly Axle, ’79-’87 GM Truck & Blazer, Rh Inner, 28Spl, Uses 5-760X U/Joint
Differential Axle Shafts
4340 Axle Kit For '79-'87 GM Truck & Blazer, GM 8.5", 28Spline With Spicer Joints
from $825.99
This product is not rated
4340 Axle Kit For ’79-’87 GM Truck & Blazer, GM 8.5", 28Spline With Spicer Joints
Differential Axle Shafts
Axle Shaft
from $63.99
This product is not rated
Axle Shaft
Differential Axle Shafts