Welcome Guest

SHOP BY CATEGORY

SHOP BY BRAND

SHOP BY VEHICLE

SPECIAL DEALS

Clearance
Limited Time Promotions
Suspension Kits

NEW ITEMS

RESOURCES

Order Status
4X4 Resource Center
Installations & Services
How She 4 Wheels
Affirm Financing
Careers

Choose from 40+ 4WP stores

Check nearby stores

Sales Support 877-474-4821

Settings
My Wishlist
My Garage
Log in

Amount (in dollars)

MY ACCOUNT

Settings
My Wishlist
My Garage
Log in

FIND A STORE

SUPPORT

CART 0

877-260-5452 Call Our Stateside Experts!

ARB
Bestop
BFGoodrich
Bilstein
Mickey Thompson
FOX
FUEL
G2 Axle & Gear
Method Wheels
Morimoto
Pro Comp
Rough Country
Smittybilt
Toyo Tires
See all brands

Shop By Model
Bronco HQ
Jeep Wrangler JL
Jeep Gladiator
Jeep Wrangler JK
Ford F-150
Toyota Tacoma

Clearance
Limited Time Promotions
Suspension Kits

NEW ITEMS

Order Status
4X4 Resource Center
Installations & Services
How She 4 Wheels
Affirm Financing
Careers

Select a New Vehicle

Tell Us What You Think

Please enter your feedback in the box below.

Or Cancel

Thank you! Your feedback has been submitted.

If you would like a response to your feedback, please enter your email address below. We will never use your email address for any other purpose. (Optional).

Or Cancel

Home
On Sale

GM 8.5 Inches Universal Fit Master Kit With Bearings GM 8.5 Inches

What Do You Drive?
Select your vehicle to see product options

REFINE BY:

Your Selection

Axle Type
GM 8.5 Inches
Minor
Master Kit With Bearings
Fitment
Universal Fit

Brand

Eaton (3)
USA Standard Gear (2)

Axle Location

Front (1)
Rear (3)

Axle Type

AMC Model 35 (3)
Chrysler 7.25 Inches (1)
Chrysler 8 Inches (1)
Chrysler 8" IFS (3)
Chrysler 8.25 Inches (2)
Chrysler 8.75 Inch (6)
Chrysler 9.25 Inches (3)
Dana 30 (1)
Dana 30 JK (1)
Dana 30 Reverse (1)
View More
Dana 30 Standard (5)
Dana 30 Super (3)
Dana 30 TJ (2)
Dana 35 (3)
Dana 35 AdvanTEK (3)
Dana 36 (1)
Dana 44 (12)
Dana 44 AdvanTEK (5)
Dana 44 JK (3)
Dana 44 Reverse (2)
Dana 44 TJ (1)
Dana 50 (1)
Dana 60 (3)
Dana 60 Super (1)
Dana 70 (2)
Ford 10.5 Inches (1)
Ford 8 Inches (2)
Ford 8.8 Inches (7)
Ford 9 Inches (10)
Ford 9.75 Inches (4)
GM 10 Bolt 7.625 Inches (1)
GM 10 Bolt 8.5 Inches (2)
GM 10 Bolt 8.6 Inches (2)
GM 12 Bolt 8.875 Inches (2)
GM 12 Bolt 9.76 Inches (1)
GM 14 Bolt 10.5 Inches (3)
GM 14 Bolt 11.5 Inches(AAM) (2)
GM 8 Inches (1)
GM 8.25 Inches IFS (2)
GM 9.25 Inches IFS (1)
Toyota 10.5 (1)
Toyota 7.5 Inches (7)
Toyota 8 Inch (2)
Toyota 8 Inch IFS (1)
Toyota 8.4 Inch (1)
Toyota 9.5 Inches (1)

Minor/ Master Kit

Minor Kit (4)

Popular Axle Manufacture

GM (5)

Part Type

Differential Ring and Pinion (2)
Ring and Pinion Installation Kits (3)

Price Range

$100 to $199 (3)
$200 to $299 (2)

View By Product GroupSwitch to View Product Groups
View By Individual ItemsSwitch to View Products

GM 8.5 Inches Universal Fit Master Kit With Bearings On Sale

2 Product Groups

Switch to View Products

SORT BY

USA Standard Gear Differential Master Overhaul Kits

From $232.89

Eaton Differential Master Install Kits

From $139.99

Available for different applications
Premium bearings and components ensure long life and quiet operation

From $139.99

5 Products

Switch to View Product Groups

SORT BY

4WP PROTECTION PLAN

Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!

No, thanks

Sign In Or Create an Account

Create An Account

Email Address

Password

Remember me

Reset Password

An email is sent to .

Enter email address to change your password

After you submit your email address, you'll receive an email a link that will let you change your password.

Email*

Choose Your Secure Checkout Method

Email Address

Password

Remember me

Reset Password

Create An Account

First Name *:

Last Name *:

Email *:

Password *:

Must be at least 8 alphanumeric characters long and must contain at least 1 number.

Confirm Password *:

Yes, I would like to receive emails with the latest deals and specials.

Add to Wishlist

Part Number: UZGZKGM8.25IFS-C

USA Standard GM 8.25" IFS Differential Master Overhaul Kit with Koyo Bearings - ZKGM8.25IFS-C

Be the first to review

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

On Backorder

Fitment: Universal Fit
Master overhaul kit
The most comprehensive and complete master rebuild kit on the market
Most kits utilize Timken bearings for long life and strength
A complete overhaul package for quick rebuilds
Engineered using state-of-the-art design software
1 year warranty against manufacturer defects
Includes side bearings and gasket
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

$268.89

On Backorder

Email me when this product comes in stock

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

USA Standard GM 8.25" IFS Differential Master Overhaul Kit with Koyo Bearings - ZKGM8.25IFS-C

Part #: UZGZKGM8.25IFS-C

$268.89

On Backorder

Email me when this product comes in stock

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

On Backorder

Fitment: Universal Fit
Master overhaul kit
The most comprehensive and complete master rebuild kit on the market
Most kits utilize Timken bearings for long life and strength
A complete overhaul package for quick rebuilds
Engineered using state-of-the-art design software
1 year warranty against manufacturer defects
Includes side bearings and gasket
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

4WP PROTECTION PLAN

Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!

No, thanks

Sign In Or Create an Account

Create An Account

Email Address

Password

Remember me

Reset Password

An email is sent to .

Enter email address to change your password

After you submit your email address, you'll receive an email a link that will let you change your password.

Email*

Choose Your Secure Checkout Method

Email Address

Password

Remember me

Reset Password

Create An Account

First Name *:

Last Name *:

Email *:

Password *:

Must be at least 8 alphanumeric characters long and must contain at least 1 number.

Confirm Password *:

Yes, I would like to receive emails with the latest deals and specials.

Add to Wishlist

Part Number: UZGZKGM8.5OLDS-28

USA Standard GM 8.5" Rear Master Overhaul Kit - ZKGM8.5OLDS-28

Be the first to review

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

On Backorder

Fitment: Universal Fit
8.5" Oldsmobile 442 & Cutlas
28 spline axles
Rear
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, thread locker, marking compound with brush and gasket
1 year warranty against manufacturer defects
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

$232.89

On Backorder

Email me when this product comes in stock

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

USA Standard GM 8.5" Rear Master Overhaul Kit - ZKGM8.5OLDS-28

Part #: UZGZKGM8.5OLDS-28

$232.89

On Backorder

Email me when this product comes in stock

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

On Backorder

Fitment: Universal Fit
8.5" Oldsmobile 442 & Cutlas
28 spline axles
Rear
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, thread locker, marking compound with brush and gasket
1 year warranty against manufacturer defects
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

4WP PROTECTION PLAN

Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!

No, thanks

Sign In Or Create an Account

Create An Account

Email Address

Password

Remember me

Reset Password

An email is sent to .

Enter email address to change your password

After you submit your email address, you'll receive an email a link that will let you change your password.

Email*

Choose Your Secure Checkout Method

Email Address

Password

Remember me

Reset Password

Create An Account

First Name *:

Last Name *:

Email *:

Password *:

Must be at least 8 alphanumeric characters long and must contain at least 1 number.

Confirm Password *:

Yes, I would like to receive emails with the latest deals and specials.

Add to Wishlist

Part Number: EATK-GM8.5-08R

Eaton GM 8.5"/8.6" 10 Bolt Rear Master Install Kit - K-GM8.5-08R

Be the first to review

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

Only 4 left in Stock ?

Fitment: Universal Fit
GM 8.5"/8.6" 10 bolt rear master install kit
Fits 1999-2008 applications
8.5/8.6" 30 spline
California Residents: WARNING

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

$139.99

$159.98

Only 4 left in Stock ?

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

Eaton GM 8.5"/8.6" 10 Bolt Rear Master Install Kit - K-GM8.5-08R

Part #: EATK-GM8.5-08R

$139.99

$159.98

Only 4 left in Stock ?

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

Only 4 left in Stock ?

Fitment: Universal Fit
GM 8.5"/8.6" 10 bolt rear master install kit
Fits 1999-2008 applications
8.5/8.6" 30 spline
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

4WP PROTECTION PLAN

Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!

No, thanks

Sign In Or Create an Account

Create An Account

Email Address

Password

Remember me

Reset Password

An email is sent to .

Enter email address to change your password

After you submit your email address, you'll receive an email a link that will let you change your password.

Email*

Choose Your Secure Checkout Method

Email Address

Password

Remember me

Reset Password

Create An Account

First Name *:

Last Name *:

Email *:

Password *:

Must be at least 8 alphanumeric characters long and must contain at least 1 number.

Confirm Password *:

Yes, I would like to receive emails with the latest deals and specials.

Add to Wishlist

Part Number: EATK-GM8.5SF

Eaton GM 8.5" Front Master Install Kit - K-GM8.5SF

Be the first to review

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

Only 1 left in Stock ?

Fitment: Universal Fit
GM 8.5" Front master install kit
Fit 1991 & older applications
8.5" 28/30 spline
California Residents: WARNING

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

$139.99

$153.83

Only 1 left in Stock ?

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

Eaton GM 8.5" Front Master Install Kit - K-GM8.5SF

Part #: EATK-GM8.5SF

$139.99

$153.83

Only 1 left in Stock ?

+ Add to Wishlist

LOW PRICE GUARANTEE

EASY RETURNS

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

Only 1 left in Stock ?

Fitment: Universal Fit
GM 8.5" Front master install kit
Fit 1991 & older applications
8.5" 28/30 spline
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!

Lowest Price! Guaranteed! Request A Price Match

4WP PROTECTION PLAN

Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!

No, thanks