USA Standard Gear Posi 31 Spline Differential Carriers GM 8.5 Inch, O axle ZP PGM8.5O-3-31

Name: USA Standard Gear Posi Differential Carriers
Brand: USA Standard Gear
SKU: SPZ-59006
Price: 911.99 USD
Availability: OutOfStock
Rating: 0 (0 reviews)

Write the First Review

Part Number: SPZ-59006

$911.99

USA Standard Gear Posi Differential Carriers

Differential Carrier, Limited Slip, 31-Spline Axle, Oldsmobile, 8.5 in., Each
See More Specifications

USA Standard Gear Posi 31 Spline Differential Carriers GM 8.5 Inch, O axle ZP PGM8.5O-3-31

SPZ-59006

Not Yet Reviewed

Part Number: SPZ-59006

Estimated Ship Date: Nov 23, 2026

$911.99

Overview

Applications

Recommended Parts

Q&A

Estimated Ship Date: Nov 23, 2026 Would you rather pick it up?

Overview

Brand:

USA Standard Gear

Manufacturer's Part Number:

ZP PGM8.5O-3-31

Part Type:

Differential Carriers

Product Line:

USA Standard Gear Posi Differential Carriers

Summit Racing Part Number:

SPZ-59006

UPC:

883584590064

Differential Case Design Type:

GM 8.5 in., O axle

Remanufactured:

Aftermarket Carrier Style:

Clutch-type

Cover Bolts:

Carrier Series:

Axle Shaft Spline Quantity:

Manufacturer of Axle:

Carrier Material:

Ductile iron

Carrier Bearings Included:

Quantity:

Sold individually.

Notes:

Fits OEM 3.08 and 3.23 gears or aftermarket Richmond gears sets.

USA Standard Gear Posi Differential Carriers

USA Standard Gear posi differential carriers are limited slip differentials originally designed for your GM vehicle. They transmit equal torque to both wheels when driving straight. However, when one wheel spins due to loss of traction, the units automatically provide more torque to the wheel that has traction. As soon as your wheel starts spinning, the other one kicks in like it should. These units are recommended for daily driving, as they work well in rain, mud, snow and ice conditions. Order the model designed for your axle application.

Recommended for You

View All Recommended Parts

Applications