Universal Aluminum Billet Battery Tray Hold Down Relocation Box Mount OEM 551181. Overall dimensions of the base plate are 11.25″ length and 8.5″ width. It will fit batteries up to 10.5″ Length x 6.95″ width x 6.7″ height with provided thread sleeves(batteries over 7.4″ tall will require longer 3/8-16 all-thread). This battery tray is designed to securely mount your battery in your vehicle by using sturdy base plates and hold-down plates and includes heavy duty 3/8 hardware. Compatible with most car and truck batteries including the following Optima sizes: Red top 34 34R 34/78, Yellow Top D34 D34/78, Blue Top 34M D34M(may fit more batteries). They are made of aircraft grade alloy aluminum, hardened to be solid and durable, electroplated to be rust and corrosion resistance for long term service. OEM Part Number: 551181. Fitment Type: Direct Replacement. 1 x base plate, 1 x top plate 3 x all-thread hold downs with nuts 3 x thread sleeves. Please allow 1-3mm differs due to manual measurement. All trademarks are for identification and belong to their owners. Our close ties with KAKA bring exclusive deals and top service! KAKA Autoparts – Your Global Hub for Auto Parts and Off-Road Gear! Right parts at the right price. From engine parts to off-road essentials, we’ve got you covered, wherever you are. Ready to gear up? Start your journey with KAKA Autoparts today! Every day, we deliver to thousands of customers around the world, making sure you get top-notch service and quick responses. Most items arrive in 3-21 days, depending on the location. Express Air International Post: 5-12 days (tracking available for most countries). Post International: 7-21 days (no tracking available). Customers have the right to apply for a return within the platform’s specified return period. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. All trademarks and brand names are for identification purposes only and belong to their respective owners. In case of urgent matters, you can search our brand online to reach us. If it’s urgent, just search our brand online, and you’ll find our live chat support ready to help you out. Thanks for understanding-KAKA Auto Parts is always here to help! While they are compatible with specific vehicle models, they are neither manufactured nor endorsed by the original equipment manufacturers (OEM). All trademarks and brand names are used for identification purposes only and remain the property of their respective owners. KAKA Auto Parts acts solely as a platform provider and is not the owner of any product brands.