Chevrolet K30 Differentials

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

Yukon Performance steel spool for GM 14T with 30 spline axles. fits 4.10 and down. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.

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

Product Features:

• O-ring for seal housing
• Fits Dana Spicer 60

Product Features:

• PINION SHIM – DANA 70 ALL

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

Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for Dana 60 differential. This kit contains carrier bearings, races and shims.

Product Features:

• Fits Dana Spicer 60
• Includes carrier bearings and races and carrier shim kit

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

21 Piece bearing race driver set. (Box wt: 140lbs) No return.

Product Features:

• Bearing race driver set
• 21 pieces
• All steel construction

Yukon positraction internals for Dana 44 Dura Grip posi, 30 spline. Does not include clutches. Does NOT fit Trac Loc or Powr Lok. Fits Dura Grip ONLY.

Product Features:

• Spider gear kit
• Fits Dana Spicer 44 with Dura Grip positraction
• Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.

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

For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!

Product Features:

• Carrier shim kit for Dana Spicer 30 with 30 spline axles

Eaton positraction shim kit for GM 14T.

Product Features:

• Shim kit
• Fits GM 10.5″ 14 bolt truck Eaton positraction

Product Features:

• Side gear thrust washer for Dana Spicer 60, 70, 70U, 70HD and 80
• Fits standard open differentials only

Dana 50 Dana 60 Dana 70 & Dana 80 roll PIN, 0.225″ DIA, for X/P shaft, 1.87″ LNG.

Product Features:

• Roll pin for Dana Spicer 50, 60, 70, 70U, 70HD and 80
• 0.225″ diameter
• 1.870″ long

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 the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

Product Features:

• Fits standard rotation Dana Spicer 44
• 8.50″ ring gear diameter
• 26 spline pinion
• 10 ring gear bolts
• 3.54 ratio

Product Features:

• Carrier shim kit
• Fits Dana Spicer 70 and 70HD

Product Features:

• Oil baffle
• Fits Dana Spicer 70 and 70HD

The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver selectability. The Yukon Zip locker is an air operated locker that provides selectable traction for off road or street use. This unit features 4320 Chrome Moly internals for added strength. Assembled in the USA! compressor sold separately. All Zip Lockers are backed by the best warranty in the business! All Zip Lockers are backed by the best warranty in the business! All Zip Lockers come with a six (6) year warranty, including any collaterally damaged parts and associated labor, up to $2,000, for the first two (2) years. This is a narrow case locker. If you have a wide housing, please order two DS 42563 with your locker. This locker is ABS compatible.

Product Features:

• Fits Dana Spicer 60 with 30 spline axles
• 4.56 and up ratio only
• Forged case and 8620 internals for added strength
• Works with a variety of air delivery systems
• Assembled in the USA

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

Replacement pinion seal for Dana 25, Dana 27, Dana 30, D36, Dana 44, & Dana 50 .Yukon Mighty seal.

Product Features:

• Pinion seal
• Fits Dana Spicer 25, 27, 30, 40 and 50

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″

Product Features:

• Spider gear kit
• Fits Dana Spicer 60, 35 spline open differential
• Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers.

The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000! This is a narrow case locker. If you have a wide housing, please order two DS 42563 with your locker. This locker is ABS compatible.

Product Features:

• Fits Dana Spicer 60 with 30 spline axles
• 4.10 and down ratio only
• Patented internal design reduces common locker failures
• 8620 internals for added strength
• Assembled in the USA

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