Cusco Rear Differential Cover Silver Increased Capacity

2015–2021 Subaru WRX STI 2.0L Turbo

Part #: 692 008 AS

Overview

The Cusco Rear Differential Cover Silver Increased Capacity is a high-performance upgrade designed specifically for Subaru WRX STI models from 2015 to 2021. Engineered to enhance the durability and efficiency of your vehicle's rear differential, this cover is ideal for spirited driving, track days, and competitive motorsports. By increasing the differential's oil capacity, it provides superior lubrication and heat dissipation, helping to protect critical components such as the limited-slip differential (LSD) and gears during demanding driving conditions.

Whether you're a performance enthusiast pushing your vehicle on twisty roads or a competitor seeking reliability during extended track sessions, this differential cover offers a practical solution to maintain optimal operating temperatures and prevent gear damage. Its robust construction and increased oil capacity contribute to smoother operation, improved response, and extended service life of your differential components.

Key Features

The Cusco Rear Differential Cover is designed with performance and durability in mind. Its key features include:

• Constructed from high-quality aluminum alloy for excellent strength and heat dissipation.
• Silver anodized finish not only provides corrosion resistance but also adds a sleek, sporty look to your engine bay.
• Increased oil capacity helps suppress oil temperature rise during aggressive driving or competition, ensuring consistent lubrication.
• Precisely machined for a perfect fit with OEM mounting points, ensuring straightforward installation without modifications.
• Designed to protect the LSD and differential gears from heat-related wear and potential damage.
• Enhanced cooling efficiency reduces the risk of overheating during extended high-performance use.
• Durable construction withstands the rigors of motorsport environments and spirited street driving.

Construction & Design

The Cusco Differential Cover is crafted from lightweight yet sturdy aluminum alloy, offering excellent thermal conductivity to help dissipate heat effectively. Its one-piece design ensures durability and a precise fit, while the anodized silver finish provides corrosion resistance and a stylish appearance. The increased volume of the cover allows for more oil capacity, which is critical for maintaining proper lubrication under high-stress conditions. The cover's design also features strategically placed fins and contours to maximize surface area for heat transfer, further aiding in temperature management during demanding driving scenarios.

Performance & Sound

By upgrading to the Cusco Rear Differential Cover, you’ll notice improved stability and responsiveness during aggressive cornering and high-speed driving. The enhanced oil capacity helps maintain consistent differential temperatures, reducing the likelihood of thermal breakdown and gear wear. While this product does not significantly alter the sound of your vehicle, the increased cooling efficiency can contribute to a more reliable and confident driving experience on the track or spirited street sessions.

Installation & Fitment

The Cusco Rear Differential Cover is a bolt-on upgrade that requires no cutting or welding. Installation is straightforward for those familiar with basic automotive procedures; simply drain the existing differential oil, remove the factory cover, and bolt the Cusco cover in place using the supplied hardware. It is recommended to replace the differential fluid with fresh oil after installation to ensure optimal performance. No special tuning or adjustments are necessary, making this an easy upgrade for enthusiasts seeking improved differential protection and cooling.

• Requires basic hand tools and standard automotive skills.
• No cutting, drilling, or modifications needed.
• Complete installation typically takes less than an hour.

What's Included

• Cusco Rear Differential Cover in Silver finish
• Mounting hardware and bolts
• Installation instructions

Ideal For

• Subaru WRX STI owners seeking increased differential durability
• Performance enthusiasts and racers requiring better heat management
• Drivers looking to extend the lifespan of their LSD and gears under high-stress conditions
• Anyone upgrading their vehicle for spirited driving or track use

Emissions Note

This product is designed for off-road or racing use only and may not be legal for use on public roads in all jurisdictions. Please check local regulations before installation.