What is a spool differential and why is it not recommended for street use?

A spool differential locks both axle shafts together, meaning both wheels will always turn at the same speed. This provides maximum traction for off-road or racing, but it makes turning difficult on pavement, causing tire scrub and increased wear. It's best suited for dedicated performance vehicles.

What material is this Yukon spool made from, and why is that important?

This spool is constructed from 8620 steel, a material known for its strength and durability in high-stress applications. It's also heat-treated to further enhance its toughness, ensuring it can withstand the demands of off-road or drag racing.

What vehicles does this Yukon Gear spool fit?

This spool is designed for Chrysler 8.75-inch rear ends that use 30 spline axles. It fits a variety of classic Chrysler, Dodge, and Plymouth vehicles from the 1960s and 1970s, such as the Dodge Dart, Plymouth Duster, and Chrysler New Yorker.

Yukon Gear Steel Spool For Chrysler 8.75in w/ 30 Spline Axles

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Specifications

Brand: Yukon Gear & Axle
Part #: YP FSC8.75-30
UPC: 883584320401

Yukon Gear Steel Spool For Chrysler 8.75in w/ 30 Spline Axles

Name: Yukon Gear Steel Spool For Chrysler 8.75in w/ 30 Spline Axles
Brand: Yukon Gear & Axle
Price: 313.89 USD
Availability: InStock

$313.89

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Yukon Gear Steel Spool for Chrysler 8.75in w/ 30 Spline Axles. Converts diff to 100% lockup for maximum traction.

Key Features

Fits Chrysler 8.75 inch rear ends with 30 spline axles.
Provides 100 percent traction to both wheels at all times.
Made from 8620 steel for strength.
Heat-treated for additional durability.
Installs in place of the differential carrier assembly.
Not recommended for street driven vehicles.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

What you get here is a Yukon Gear & Axle steel spool, designed to replace your differential carrier assembly in Chrysler 8.75-inch rears with 30-spline axles. This part is built to give you 100 percent traction to both wheels at all times, making it a solid choice for dedicated off-road or drag racing applications where maximum grip is the priority.

This spool is made from 8620 steel and then heat-treated for added strength, which is important when you're putting down serious power or tackling tough terrain. Because it locks both axles together, it's not recommended for street-driven vehicles, as it can make turning more difficult. It's a straightforward way to convert your differential to a full-time locked setup, offering a cost-effective path to enhanced traction for specialized uses.