Sale

Ignitions and Electrical Charging Systems

Deka

12-Volt AGM Battery

$205.00 $146.48 Save $58.52

SKU: 8AMU1R

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In Stock
Ships by Aug 4
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Deka 8AMU1R is a premium AGM battery engineered specifically for 1999-2005 Mazda Miata NB models where the battery is located in the trunk. It provides 320 CCA for dependable engine starts and features advanced AUX AGM technology with individual cell venting for optimal performance and recombination efficiency. This maintenance-free battery boasts a spill-proof and leak-proof design, ensuring safe installation in the trunk environment. Constructed with ultra-pure electrolyte and a reinforced case, the 8AMU1R is built for durability and resilience, offering superior deep discharge capabilities. Its compact dimensions (7.8" × 5.1" × 7.2") provide an exact fit for the original equipment location, utilizing existing hold-down hardware. The battery is fully charged and ready for immediate installation as a drop-in replacement. Compatibility is strictly limited to 1999-2005 Mazda Miata models with the battery housed in the trunk. Vehicles with an under-hood battery location require a different battery. The Deka 8AMU1R comes with a 1-year free replacement warranty and is manufactured in the USA, offering exceptional value and trusted quality for your Miata.

MIA's Description

The Deka 8AMU1R is a 12-volt Absorbed Glass Mat (AGM) battery designed as a replacement for 1999-2005 Mazda Miata models with trunk-mounted batteries. It offers 320 Cold Cranking Amps (CCA) for reliable starting power. This maintenance-free battery is built in the USA and features a spill-proof and leak-proof design, making it ideal for trunk installations.

Fitment

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Specifications

BrandDeka
Part Number8AMU1R
CategoryIgnitions and Electrical

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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