9115078 SPEEDWAY MOTORS Finned Rearend Differential Cover Gm

Review SPEEDWAY MOTORS Finned Pol Alum Rearend Differential Cover Gm 8-1/2 Inch Bolt for GM 2010

The Speedway Motors 9115078 Finned Alum Rear End Differential Cover is a high-performance replacement option for GM 8-1/2 inch 10-bolt rear ends. This cover is engineered to provide superior cooling capabilities for your differential, ensuring optimal performance under heavy usage.

The cover is constructed from high-quality aluminum, which offers several advantages over the OEM steel cover. Aluminum is lighter in weight, which helps reduce unsprung weight and improves your vehicle's overall handling characteristics. Additionally, aluminum is an excellent heat conductor, making it ideal for dissipating the heat generated by the differential.

One of the most notable features of this cover is its finned design. The fins provide increased surface area for cooling, enabling the cover to dissipate heat more effectively than a standard cover. This is particularly important for high-performance applications where the differential is subjected to prolonged periods of heavy usage.

Another advantage of this cover is its smooth, polished finish. Not only does this make the cover look great, but it also reduces wind resistance, helping to improve aerodynamic performance and reduce drag.

The Speedway Motors 9115078 Finned Alum Rear End Differential Cover is a direct replacement for the OEM cover and is designed to fit GM 8-1/2 inch 10-bolt rear ends. It comes with all necessary hardware for installation, making the process straightforward and hassle-free.

In summary, the Speedway Motors 9115078 Finned Alum Rear End Differential Cover is an excellent upgrade for your GM 8-1/2 inch 10-bolt rear end. It offers superior cooling capabilities, reduced weight, improved aerodynamics, and a sleek, polished finish. Whether you're looking to improve the performance of your daily driver or your race car, this cover is an excellent investment.

Pros and Cons of Buying a Speedway 9115078 Finned Aluminum Rear End Differential Cover for GM 8-1/2 10 Bolt

The Speedway 9115078 finned aluminum rear end differential cover is a popular aftermarket upgrade for GM 8-1/2 10 bolt vehicles. This cover is designed to provide better cooling and durability compared to the stock cast iron cover. In this analysis, we will discuss the pros and cons of purchasing this differential cover.

1. Improved Cooling: The finned design of the aluminum cover allows for better heat dissipation, which can help prevent overheating and improve the overall performance of the differential.

2. Lightweight: Aluminum is a lighter material than cast iron, which can help reduce unsprung weight and improve vehicle handling and responsiveness.

3. Durability: Aluminum is more resistant to corrosion and rust compared to cast iron, which can help extend the life of the differential cover and reduce the need for frequent replacements.

4. Aesthetic Appeal: The polished aluminum finish of the cover can give the vehicle a more modern and attractive appearance.

1. Cost: The Speedway 9115078 finned aluminum differential cover is more expensive than the stock cast iron cover. This may be a consideration for those on a tight budget.

2. Installation: The installation process for the aluminum cover can be more complex than the stock cover due to the use of gaskets and seals. This may require additional time and labor costs.

3. Compatibility: The aluminum cover may not be compatible with all aftermarket modifications or upgrades, such as aftermarket differential gears or lockers. It is important to check the compatibility of the cover before making a purchase.

The Speedway 9115078 finned aluminum rear end differential cover offers several benefits, including improved cooling, lightweight design, durability, and aesthetic appeal. However, it also comes with some drawbacks, such as a higher cost, more complex installation process, and potential compatibility issues.

After careful consideration, if you are looking for better cooling and durability for your GM 8-1/2 10 bolt vehicle and have the budget for it, the Speedway 9115078 finned aluminum differential cover is a worthwhile investment. However, if cost is a major concern or you have aftermarket modifications that may not be compatible with the cover, it may be best to stick with the stock cast iron cover.

If you are looking for an upgrade to your GM 8-1/2 10 bolt differential cover and have the budget for it, the Speedway 9115078 finned aluminum differential cover is a solid choice for improved cooling, durability, and aesthetic appeal. However, be sure to check compatibility with any aftermarket modifications you may have before making a purchase.

Details:

Chevy/gm polished aluminum rear differential cover with 10 bolt pattern. Fits Chevy/gm 10 bolt rear ends with 8-1/2 ring gear. Yes, I recommend this product. Gasket not included 91069857.

Specs material type aluminum sold in quantity each finish polished oil inspection plug no mfg. Headquarters. Includes bolts and drain plug. Part # 9115078 condition new brand Speedway motors sold each details info these polished aluminum rearend gear covers feature a classic finned design and are made to fit Gm 10 bolt housings with an 8-1/2 ring.

specifications differentialsdepo:

• for makes: Gm
• for years: 2010
• brand: Speedway Motors
• mpn: 9115078
• type: Differential Covers
• item length: 13.00
• california prop 65 warning: True

seller differentialsdepo:

• city: lincoln, nebraska
• rating: 99.2%
• # reviews: 328791

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

offer differentialsdepo:

• availability: in stock
• started: september 19, 2025
• options: ship-to-home
• prices: $98.13–$102.34
• item condition:
  • New
  • New with tags
• sold #: 14
• in stock #: 2

shipping differentialsdepo:

• type: fixed
• service: economy, expedited
• transit: 6-6 days
• class: economy, expedited

returns differentialsdepo:

• paid by: seller
• time: 30 days
• policy: returns accepted

payments differentialsdepo:

• wallet: apple-pay
• other
• credit card: mastercard