Genuine Deka 8AMU1R AGM battery designed specifically for trunk-mounted Mazda Miata applications (1990-2005). This 320CCA maintenance-free battery delivers reliable starting power and deep-cycle performance for your Miata.
VEHICLE COMPATIBILITY:
- 1990-1997 Mazda Miata (NA)
- 1999-2005 Mazda Miata (NB)
IMPORTANT: This battery is ONLY compatible with Mazda Miata models that have the battery located in the trunk. If your battery is located under the hood, this is NOT the correct battery for your vehicle.
TECHNICAL SPECIFICATIONS:
- 12 Volt AGM Battery
- Cold Cranking Amps (CCA): 320
- Model: Deka 8AMU1R
- Technology: Advanced Glass Mat (AGM)
- Maintenance: 100% Maintenance-Free
- Installation Location: Trunk Mount
DIMENSIONS:
- Length: 7.8 inches
- Width: 5.1 inches
- Height: 7.2 inches
- Weight: 24 pounds
KEY FEATURES:
- Direct OEM Replacement
- Sealed AGM Technology
- Vibration Resistant
- Long Service Life
- Spill-Proof Design
- Made in USA by Deka
INSTALLATION NOTE:
Spare tire removal may be required for installation. Professional installation recommended but not required.
NEED ASSISTANCE?
Questions about fitment? Contact our battery specialists through eBay messaging for expert assistance. We typically respond within 1 business hour.

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DESCRIPTION
Genuine Deka 8AMU1R AGM battery designed specifically for trunk-mounted Mazda Miata applications (1990-2005). This 320CCA maintenance-free battery delivers reliable starting power and deep-cycle performance for your Miata.
VEHICLE COMPATIBILITY:
- 1990-1997 Mazda Miata (NA)
- 1999-2005 Mazda Miata (NB)
IMPORTANT: This battery is ONLY compatible with Mazda Miata models that have the battery located in the trunk. If your battery is located under the hood, this is NOT the correct battery for your vehicle.
TECHNICAL SPECIFICATIONS:
- 12 Volt AGM Battery
- Cold Cranking Amps (CCA): 320
- Model: Deka 8AMU1R
- Technology: Advanced Glass Mat (AGM)
- Maintenance: 100% Maintenance-Free
- Installation Location: Trunk Mount
DIMENSIONS:
- Length: 7.8 inches
- Width: 5.1 inches
- Height: 7.2 inches
- Weight: 24 pounds
KEY FEATURES:
- Direct OEM Replacement
- Sealed AGM Technology
- Vibration Resistant
- Long Service Life
- Spill-Proof Design
- Made in USA by Deka
INSTALLATION NOTE:
Spare tire removal may be required for installation. Professional installation recommended but not required.
NEED ASSISTANCE?
Questions about fitment? Contact our battery specialists through eBay messaging for expert assistance. We typically respond within 1 business hour.

Payment Methods Accepted: MasterCard, Visa, Discover, American Express, PayPal.
Payment must be made within 3 days of purchasing the item, we are not able to ship items until payment has been received. If you have a special circumstance please reach out to us.
If you have an issue with your order please reach out to us first before initiating a return.
We offer free returns within the first 30 days. Once the product arrives at our facility it will be inspected to ensure quality, both in terms of performance and physical appearance. Damaged items will receive a reduced refund or a dispute on the return.
Once the product has been confirmed to be in the new condition, a refund will be issued through the eBay platform back to the original payment method used.
We have an extremely knowledgeable staff on hand - if you have any questions please feel free to message us for help. We are in the office Monday - Fridays 8 AM to 9 PM and Saturdays 9 AM to 2 PM.