Aluminum vs Stainless Steel Running Boards in 2026: Key Differences
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You are comparing an aluminum vs stainless steel running board to decide which fits your needs. Both AutoBull and COMNOVA offer 6-inch wide steps for crew cabs, providing a secure foothold. The main difference lies in the construction material. AutoBull uses rust-resistant aluminum with a black powder coat. COMNOVA uses stainless steel with a slider design. These choices affect weight, appearance, and how the step attaches to your truck.
Key differences
| Aspect | AutoBull 6" Aluminum Running Boards | COMNOVA 6" Stainless Steel Running Board |
|---|---|---|
| Material | Aluminum | Stainless Steel |
| Finish | Black powder coated | Stainless Steel |
| Compatible Vehicle | 2005-2023 Toyota Tacoma | 2007-2018 Chevy Silverado/GMC Sierra |
| Weight | 34.2 pounds | 49.6 pounds |
| Height | 2.1 inches | 2 inches |
| Installation Feature | Fixed brackets | Slider design |
Which one should you choose?
Choose AutoBull 6" Aluminum Running Boards if
- You drive a Toyota Tacoma and prefer a lighter step.
- You want a black finish to match trim details.
- You need a step that weighs under 35 pounds.
Choose COMNOVA 6" Stainless Steel Running Board if
- You drive a Chevy Silverado or GMC Sierra.
- You prefer the durability and look of stainless steel.
- You want adjustable positioning via a slider design.
Verdict: Choose the AutoBull aluminum option if you drive a Tacoma and value lower weight and a black finish. Select the COMNOVA stainless steel board if you own a Silverado or Sierra and want a robust, adjustable step. Your truck model and material preference should drive your final choice.
Aluminum vs Stainless Steel Steps
Material and Finish
AutoBull uses rust-resistant aluminum with a black powder-coated finish. This combination provides a modern look while protecting the metal from corrosion. COMNOVA features a stainless steel construction with a natural metallic appearance. Stainless steel is known for its strength and resistance to rust without needing a paint layer. Both materials are durable, but aluminum offers a lighter weight option with a coated surface, whereas stainless steel provides a solid, uncoated metal surface that maintains its appearance over time.
Step Width
Both running boards offer a 6-inch wide step surface. This width provides a secure foothold for entering and exiting the truck. The consistent width across both products ensures that you have ample space for your foot, regardless of whether you choose the aluminum AutoBull or the stainless steel COMNOVA. This standard dimension is practical for most users, balancing stability with a compact profile that does not excessively protrude from the vehicle side.
Weight Capacity
COMNOVA specifies a weight capacity of up to 500 lbs per bar. This rating indicates strong structural integrity for heavy use. The AutoBull listing does not provide a specific weight capacity number in the published specifications. While the aluminum construction is designed to withstand everyday wear and tear, the lack of a stated limit means you cannot verify its load-bearing performance against the COMNOVA rating. If high load capacity is critical, the COMNOVA data offers a clear advantage.
Installation Design
COMNOVA features a slider design that allows you to adjust the position forward or backward for better customization. It also includes plastic covers on the brackets to prevent rust and enhance appearance. AutoBull includes installation brackets and a screw pack for direct mounting but does not mention adjustable sliding brackets. The COMNOVA adjustable feature provides more flexibility during installation to ensure a perfect fit, while AutoBull relies on standard bracket placement.
Weight and Profile
The AutoBull aluminum running boards weigh 34.2 pounds and have a step height of 2.1 inches. The COMNOVA stainless steel boards weigh 49.6 pounds with a step height of 2 inches. The aluminum version is significantly lighter, which may be easier to handle during installation and reduces the load on the truck's frame. The COMNOVA is heavier due to the stainless steel material. Both heights are similar, providing nearly the same step-up elevation for the user.
Which aluminum or steel step fits you
Tacoma owners seeking lightweight rust resistance
This AutoBull step is made from rust-resistant aluminum, which keeps the weight down at 34.2 pounds. The black powder-coated finish protects against corrosion while the 6-inch wide step provides a stable foothold. It fits 2005-2023 Tacoma Double Cabs perfectly. The ABS corner covers add durability without adding bulk to your truck's profile.
Silverado users needing high load capacity
COMNOVA uses stainless steel construction, which supports up to 500 lbs of weight. This robust material ensures stability when you step into your 2007-2018 Silverado or Sierra Crew Cab. The direct bolt-on installation requires no drilling. The slider design allows for precise positioning, and the plastic bracket covers help prevent rust on the mounting points.
Drivers wanting adjustable fitment precision
The COMNOVA running board features a patented slider design that lets you adjust the position forward and backward. This customization ensures a perfect fit on your vehicle. The stainless steel body is durable, and the 6-inch step width offers secure footing. You get a direct bolt-on experience with included brackets for easy installation on compatible Chevy or GMC trucks.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | AutoBull 6" Aluminum Running Boards | 2005-2023 Tacoma owners wanting aluminum steps | Check price of AutoBull 6" Aluminum Running Boards on Amazon |
| 2 | COMNOVA 6" Stainless Steel Running Board | Crew Cab trucks needing heavy-duty support | Check price of COMNOVA 6" Stainless Steel Running Board on Amazon |
The products compared
AutoBull 6" Aluminum Running Boards
Best for: 2005-2023 Tacoma owners wanting aluminum steps
- Material
- Aluminum (what this guide is about)
- Compatible Vehicle
- 2005-2023 Toyota Tacoma
- Step Width
- 6 inches
- Finish
- Black powder coated
- Cab Size
- Double Cab
- Style
- Side Steps
View on Amazon: AutoBull 6" Aluminum Running Boards Affiliate link
This AutoBull running board is built from rust-resistant aluminum with a black powder-coated finish. The 6-inch wide step provides a solid foothold for entering your Toyota Tacoma. Honeycomb anti-slip patterns and ABS corner covers add durability and style. It fits 2005-2023 Double and Crew Cabs. You get a pair of steps with brackets and a 36-month warranty.
Pros
- Rust-resistant aluminum construction
- 6-inch wide stepping area
- Black powder coated finish
- Honeycomb anti-slip design
Cons
- Limited to aluminum material only
- Does not fit 2024 Tacoma models
- Heavier at 34.2 pounds
Good fit if
- You want rust-resistant aluminum steps
- You need a wider 6-inch step
- You own a 2005-2023 Tacoma
Skip if
- You prefer stainless steel material
- You have a 2024 Tacoma model
- You drive a Double Cab with 2 rear doors
Verdict: AutoBull 6 Inch Aluminum Tacoma Step offers a sturdy aluminum build with a 6-inch step width. It fits 2005-2023 Tacoma models well, but you should skip it if you need stainless steel or have a 2024 truck.
COMNOVA 6" Stainless Steel Running Board
Best for: Crew Cab trucks needing heavy-duty support
- Material
- Stainless Steel (what this guide is about)
- Cab Size
- Crew Cab
- Step Width
- 6 inches
- Installation
- Direct bolt-on, no drilling
- Finish
- Stainless Steel
- Weight Capacity
- 500 lb
View on Amazon: COMNOVA 6" Stainless Steel Running Board Affiliate link
This COMNOVA running board is built from stainless steel with anti-slip plastic steps. It offers a 6-inch wide step surface for secure footing. The unit supports up to 500 lbs and installs via direct bolt-on without drilling. It is designed for 2007-2018 Chevy Silverado and GMC Sierra Crew Cab models. The slider design allows for forward and backward adjustment to fit your vehicle precisely.
Pros
- Stainless steel construction resists rust
- 6-inch wide step for stability
- 500 lb weight capacity
- Direct bolt-on installation
- Adjustable slider design
Cons
- Heavier build at 49.6 pounds
- Not suitable for diesel engine models
- Excludes 2007 Silverado 1500 Classic
Good fit if
- You want a durable stainless steel step
- You need a 500 lb load capacity
- You have a Crew Cab Silverado or Sierra
Skip if
- You drive a diesel engine model
- You own a 2007 Silverado 1500 Classic
- You prefer a lighter aluminum step
Verdict: COMNOVA Stainless Steel 6-Inch Running Board provides a sturdy, rust-resistant step for heavy-duty use. It is ideal for Crew Cab owners who prioritize durability and high weight capacity over lightweight materials.
Specifications side by side
| Spec | AutoBull 6" Aluminum Running Boards | COMNOVA 6" Stainless Steel Running Board |
|---|---|---|
| Compatible Vehicle | 2005-2023 Toyota Tacoma | not stated |
| Cab Size | not stated | Crew Cab |
| Material | Aluminum | Stainless Steel |
| Step Width | 6 inches | 6 inches |
| Installation | not stated | Direct bolt-on, no drilling |
| Finish | Black powder coated | Stainless Steel |
| Weight Capacity | not stated | 500 lb |
| Compatible Truck | Toyota Tacoma | Chevy Silverado, GMC Sierra |
| Width | 6 inches | 6-Inch |
| Style | Side Steps | not stated |
| Dimensions | 82.6 × 6 × 2.1 inches | 86 × 6 × 2 inches |
| Weight | 34.2 pounds | 49.6 pounds |
| Size | Tacoma 05-23 Crew | 07-18 Silverado Crew Cab |
| Color | Alu-diamond anti-slip black | Stainless Steel |
| Model | ABRB-1001 | 15655H6-8-C |
Frequently asked questions
Are aluminum running boards lighter than stainless steel?
Yes, aluminum steps are significantly lighter. The AutoBull aluminum model weighs 34.2 pounds, while the COMNOVA stainless steel option weighs 49.6 pounds. You will save over 15 pounds by choosing aluminum. This makes installation easier and reduces stress on your truck's mounting points. Heavier steel steps provide a solid feel but require more effort to handle during installation.
Do aluminum running boards rust?
Aluminum does not rust like iron or steel, but it can corrode. The AutoBull step uses rust-resistant aluminum with a black powder-coated finish for extra protection. This finish shields the metal from environmental damage. Stainless steel is also highly resistant to corrosion. Both materials offer long-term durability, though aluminum relies on its coating for optimal finish preservation.
Which material is stronger for heavy-duty use?
Stainless steel is generally stronger and more durable for heavy loads. The COMNOVA stainless steel step is built for heavy-duty support. It handles higher weight capacities than the aluminum alternative. If you frequently step on the boards with heavy boots or carry gear, steel provides a sturdier platform. Aluminum is suitable for standard use but is lighter and less rigid than steel.
What is the difference in step width?
Both options offer a 6-inch step width. This width provides a secure foothold for most users. The AutoBull aluminum step and the COMNOVA stainless steel step both measure 6 inches wide. This consistent sizing ensures you get a stable platform regardless of material choice. The width is sufficient for safe entry and exit from your truck bed or cabin.
How do the finishes compare?
The finishes differ in appearance and maintenance. AutoBull offers a black powder-coated finish with an anti-slip diamond pattern. This gives a modern, matte look. COMNOVA features a natural stainless steel appearance. The steel finish reflects light and shows its metallic texture. You can choose black for a stealth look or stainless for a classic, bright metal aesthetic.
Are these steps compatible with crew cabs?
Yes, both steps are designed for crew cabs. The AutoBull model fits Toyota Tacoma Double Cabs from 2005 to 2023. The COMNOVA step fits Chevy Silverado and GMC Sierra Crew Cabs from 2007 to 2018. You must verify your specific truck model and year. These steps are not universal and require exact fitment for proper installation and function.