Vgoohobby Blue Aluminum Differential Carrier Case for Traxxas 1/10 RC Cars (Part #3978/5381)

The Vgoohobby aluminum differential carrier is a direct replacement upgrade for multiple Traxxas 1/10 scale RC vehicles, including the Slash 4X4, Rustler 4X4, Stampede 4X4, T-Maxx, Slayer Pro 4X4, and X0-1. Made from CNC-machined aluminum alloy, this diff case is designed to handle the demands of bashing and racing. It replaces factory part numbers 3978 and 5381, and comes with a screws set for installation. Weighing just 13 grams, it adds strength without significant weight.

Compatibility and Fitment

This differential case fits a wide range of Traxxas 1/10 models: X0-1, Revo, Rustler 4X4 (VXL), Slash 4X4, Slayer Pro 4X4, Stampede 4X4 (unassembled and VXL), and T-Maxx. It's a drop-in replacement for the stock plastic or worn metal units. The precise CNC machining ensures a snug fit against the bulkhead and driveshafts, reducing slop and improving drivetrain efficiency.

Material and Construction

The housing is cut from 6061 aluminum alloy, then anodized blue for corrosion resistance and a clean look. CNC machining guarantees flat sealing surfaces and accurate bearing bores. The aluminum construction dissipates heat better than plastic, helping keep differential fluid temperatures down during hard runs.

What's Included

Each purchase contains one differential carrier and a set of mounting screws. The screws are sized to match the factory thread patterns, so no extra hardware is needed. The carrier itself is pre-finished in blue (or black if selected). Note: differential internal gears, bearings, and fluid are not included — this is the casing only.

Product Specifications

Which Traxxas models use this diff case?

Compatible models: Traxxas X0-1, Revo (including 3.3), Rustler 4X4 (VXL), Slash 4X4, Slayer Pro 4X4, Stampede 4X4 (unassembled and VXL), and T-Maxx (1/10 scale). Always confirm your specific model's differential part number — this case replaces Traxxas parts 3978 and 5381.

Frequently Asked Questions

Does this come with differential gears?

No. This is only the outer carrier (housing). You must reuse or purchase the internal gear set, bearings, and fluid separately.

What color options are available?

Blue and black. The listing shows the blue version; select black if preferred. Both are anodized aluminum.

How much does it weigh?

The carrier itself weighs 13 grams (0.46 oz). The packaged weight including screws and box is 0.634 ounces.

Is it a direct fit on a Slash 4x4?

Yes, it is designed as a direct replacement for the factory differential carrier on the Slash 4x4. Installation requires basic disassembly of the rear or front diff assembly.