Universal Battery Tray Hold Down Relocation Box - Secure Optima Fit

In this review the Universal Battery Tray Hold Down Relocation Box is examined for vehicle owners who need a secure, compact mounting solution for Optima-style batteries. The bottom line is straightforward: this tray is for anyone relocating or upgrading a Red, Yellow or Blue top Optima battery and needs a robust, rust-resistant mount that fits common racing and replacement battery sizes. It stands out for its solid aluminum and iron construction and a tray size that accepts most Optima 34/34R/D34/34M family batteries while including the hardware needed to install it.

Key Features

• Compatibility: Fits most car and truck batteries in Optima sizes including Red top 34, 34R, 34/78 and Yellow/Blue D34, D34/78 and 34M variants so it covers common replacements.
• Complete hardware kit: The package includes a base plate, top plate, three all-thread hold downs, three thread sleeves and six matching nuts so installation requires no extra fasteners for standard fits.
• Durable materials: Constructed from high-quality aluminum alloy and iron to resist rust and provide long-term protection for the battery in varied environments.
• Heavy duty mounting: Uses 3/8 in all-thread hardware for secure clamping and a stable mount under acceleration or road vibration.
• Tray capacity: Bottom tray accepts batteries up to 10.5 in length x 6.95 in width x 6.7 in height with supplied sleeves, covering typical Optima dimensions.
• Modular design: Top and base plate system makes it possible to adapt to slightly different battery heights by changing to longer 3/8-16 all-thread if needed.

Who It's For

This tray is suited to car and truck owners who run Optima-style batteries and want a tidy, secure relocation or replacement mount. It is particularly useful for enthusiasts fitting race or high-performance batteries where a compact, billet-style mount is desired and longevity against corrosion is important.

Those who should look elsewhere include owners of very large or non-Optima-form-factor batteries that exceed the listed tray dimensions, and shoppers who need a fully welded sealed box rather than a base/top plate style hold down system.

Pros & Cons

Pros

• Well-built aluminum and iron construction provides good long-term corrosion resistance and a premium feel.
• Includes all necessary hold-down hardware for standard installs, reducing the need to source extra parts.
• Good fit for Optima 34-series batteries with a sturdy clamp system that limits movement during use.

Cons

• Some users report difficulty threading the rods during installation, and batteries taller than 7.4 in require longer 3/8-16 all-thread not included.

Specifications

Application	Fits Optima Red 34/34R/34/78, Yellow D34/D34/78, Blue 34M/D34M
Included Parts	1 base plate, 1 top plate, 3 all-thread hold downs, 3 thread sleeves, 6 matching nuts
Materials	Aluminum alloy and iron
Hardware Size	Heavy duty 3/8 in all-thread
Tray Capacity	Up to 10.5 in L x 6.95 in W x 6.7 in H (sleeves in place)
Requires	Longer 3/8-16 all-thread for batteries over 7.4 in tall

Our Verdict

The Universal Battery Tray Hold Down Relocation Box is a practical, value-packed solution for drivers using Optima 34-series batteries who need a secure, corrosion-resistant mount. It delivers durable construction and the right hardware for most installs, making it a sensible buy for performance and everyday applications, while buyers with oversized batteries should plan for longer all-thread hardware.

Frequently Asked Questions

Will this accept a standard Optima 34 battery?
Yes, it is designed to fit Red 34/34R/34/78 and equivalent Yellow and Blue Optima sizes within the listed tray dimensions.

Are extra fasteners required?
The kit includes the base plate, top plate, three all-thread hold downs, three sleeves and six nuts, but taller batteries over 7.4 in need longer 3/8-16 all-thread not included.

Is the tray rust resistant?
The combination of aluminum alloy and iron offers improved rust resistance compared with plain steel and is intended for long-term protection of the battery.