Retno Reproduction 4HU Differential Housing for AC Cobra, Griffith & Jaguar E-Type

Retno Reproduction 4HU Differential Housing for AC Cobra, Bizzarrini & Jaguar E-Type

Bring authentic design and precision craftsmanship to your vintage race car or performance build with the Retno Reproduction 4HU Differential Housing. Accurately reproduced from the original 4HU case, this housing features the original-style four-bolt nose configuration, making it an essential component for AC Cobra recreations, Bizzarrini builds, and lightweight Jaguar E-Type race cars.

Manufactured from virgin 356 aluminum and heat-treated to T6 specifications, this reproduction housing is engineered for quality, durability, and precision. Each housing is machined to meet the specifications of the original design, providing an excellent foundation for your restoration or custom drivetrain project.

Product Features

• Accurate Reproduction: Faithfully reproduces the original 4HU differential case design.

• Four-Bolt Nose Configuration: Features the original-style four-bolt nose mounting arrangement.

• Premium Aluminum Construction: Manufactured from virgin 356 aluminum with T6 heat treatment.

• Precision Machining: Designed to accommodate 3 17/64" OD output shaft bearing housings.

• Versatile Applications: Ideal for AC Cobra recreations, Bizzarrini builds, and lightweight Jaguar E-Type race cars.

• Custom Build Options: Additional differential components and complete custom units are available upon request.

What’s Included

Each purchase includes the following components:

1. One (1) machined 4HU differential housing, as shown in the product photographs.

2. Two (2) billet aluminum differential brackets.

3. Four (4) Grade 8 bolts and four (4) washers.

Please Note: Additional components shown in the photographs are for illustrative purposes only and are not included with this listing. These items are available separately upon request at additional cost.

Additional Components & Custom Builds

Looking to complete your drivetrain assembly? Retno can supply additional components upon request, including:

• Complete bearing sets

• Dana 3.54 ring and pinion sets

• Differential assemblies

• Side axles

• Custom-built complete differential units

Contact Retno to discuss component availability, compatibility, and custom assembly options for your specific application.

Retno Quality & Craftsmanship

At Retno, we take pride in the quality and precision of our products. We stand behind our work and are committed to providing components that meet the needs of restoration specialists, vintage racing enthusiasts, and performance builders.

Whether you're building an AC Cobra recreation, a Bizzarrini, or a lightweight Jaguar E-Type race car, the Retno Reproduction 4HU Differential Housing is an essential foundation for your project.