FullRiver
Full Throttle 12V Automotive Battery

FullRiver FT438-U1R Vehicle Battery

Brand FullRiver FT438-U1R
Amp Hours 35
Cold Cranking Amps 438
Cranking Amps 525
Group 46a24l
Group U1r
Item Height 7.559 in.
Overall Length 7.717 in.
Type Automotive
Voltage 12 dc
Width 5.158 in.
Product line Full Throttle 12V Automotive Battery
Fits Mazda · 172 vehicles

12V automotive battery. Delivers 438 cold cranking amps for dependable starting power.

Compact Group U1R. Fits a smaller battery tray with a 7.717 in. length.

35 amp hours. Provides steady reserve capacity for everyday electrical demands.

Cross-references 8AU1R, 46A24L and MT-U1R for the same application. See all 4.

$264.81Free shipping
In stock · usually ships same day before 1pm CST
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Order total $264.81
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Free returns within 60 days if it doesn't fit when fitment is verified.

FullRiver FT438-U1R Automotive Battery

The FullRiver Full Throttle FT438-U1R is a 12V automotive battery built for compact vehicle applications that need reliable starting power and the correct physical fit. With 438 cold cranking amps and 35 amp hours, it supports consistent engine starts in Mazda Miata applications that call for Group U1R or 46A24L sizing.

  • 12V automotive battery for starting and charging systems
  • 438 cold cranking amps for dependable engine cranking
  • 35 amp hours of reserve capacity
  • 525 cranking amps
  • Group U1R and Group 46A24L fitment
  • Dimensions: 7.717 in. overall length, 5.158 in. width, 7.559 in. height
  • Brass SAE terminal, left-hand positive orientation

Full Throttle Battery Line

The Full Throttle 12V Automotive Battery line from FullRiver is focused on direct-fit replacement batteries for vehicles that require specific case size, terminal layout, and starting performance. The FT438-U1R part number is a fitment-specific option for Mazda Miata models that use the listed battery configuration.

Fitment Details

  • Fits 1990-1993 Mazda Miata, N/A. Group U1R; 438CCA; 35AH; Brass SAE Terminal LHP; O.E. battery is AGM (Valve Regulated Lead Battery); battery is vented to outside of vehicle; OEM BCI: 46A24L; OEM CCA: 320.
  • Fits 1994-1997 Mazda Miata, N/A. Group U1R; 438CCA; 35AH; Brass SAE Terminal LHP; O.E. battery is AGM (Valve Regulated Lead Battery); battery is vented to outside of vehicle; OEM BCI: 46A24L; OEM CCA: 320.
  • Fits 1999-2005 Mazda Miata, N/A. Group U1R; 438CCA; 35AH; Brass SAE Terminal LHP; O.E. battery is AGM (Valve Regulated Lead Battery); battery is vented to outside of vehicle; OEM BCI: 46A24L; OEM CCA: 320.

What This Battery Helps Address

  • Slow or weak engine cranking in Mazda Miata starting systems
  • Replacement needs for a battery with Group U1R or 46A24L dimensions
  • Battery service on vehicles requiring a vented AGM-style original battery layout
  • Fitment issues caused by incorrect terminal orientation or case size
  • Starting performance loss from an aging 12V automotive battery

Installation Notes

Confirm the battery tray, terminal orientation, and venting setup before installation. This FT438-U1R battery is specified for Mazda Miata applications with left-hand positive terminal layout and the listed Group U1R / 46A24L dimensions. Verify the vehicle’s original battery specification against the part number FT438-U1R before installation.

Quality Assurance

FullRiver identifies this battery as part of its Full Throttle 12V Automotive Battery line and publishes key electrical and dimensional specifications for application matching. Use the listed CCA, amp hour rating, and case dimensions to confirm proper fitment for your Mazda Miata.

This part fits 172 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
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2023KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
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2022KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXR-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2022KawasakiKAF820 Mule PRO-FXT Ranch Edition Platinum-L--OEM BCI: U1R
2021Can-AmMaverick X3 DS Turbo-L--
2021Can-AmMaverick X3 DS Turbo R-L--
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2021Can-AmMaverick X3 Max RS Turbo R-L--
2021Can-AmMaverick X3 Max X ds Turbo RR-L--
2021Can-AmMaverick X3 Max X mr Turbo RR-L--
2021Can-AmMaverick X3 Max X rs Turbo RR-L--
2021Can-AmMaverick X3 Max X rs Turbo RR Smart-Shox-L--
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2021Can-AmMaverick X3 Turbo-L--
2021Can-AmMaverick X3 X ds Turbo RR-L--
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2021KawasakiKAF820 Mule PRO-FX-L--OEM BCI: U1R
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2021KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2021KawasakiKAF820 Mule PRO-FXR-L--OEM BCI: U1R
2021KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2021KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2021KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2021KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2021KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2020Can-AmMaverick X3 DS Turbo R-L--
2020Can-AmMaverick X3 Max DS Turbo R-L--
2020Can-AmMaverick X3 Max RS Turbo R-L--
2020Can-AmMaverick X3 Max Turbo-L--
2020Can-AmMaverick X3 Max X ds Turbo RR-L--
2020Can-AmMaverick X3 Max X mr Turbo RR-L--
2020Can-AmMaverick X3 Max X rs Turbo RR-L--
2020Can-AmMaverick X3 RS Turbo R-L--
2020Can-AmMaverick X3 Turbo-L--
2020Can-AmMaverick X3 X ds Turbo RR-L--
2020Can-AmMaverick X3 X mr Turbo-L--
2020Can-AmMaverick X3 X mr Turbo RR-L--
2020Can-AmMaverick X3 X rc Turbo-L--
2020Can-AmMaverick X3 X rc Turbo RR-L--
2020Can-AmMaverick X3 X rs Turbo RR-L--
2020KawasakiKAF820 Mule PRO-FX-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FX EPS-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FXR-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2020KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2019Can-AmMaverick X3 Max Turbo-L--
2019Can-AmMaverick X3 Max Turbo R-L--
2019Can-AmMaverick X3 Max X ds Turbo R-L--
2019Can-AmMaverick X3 Max X rs Turbo R-L--
2019Can-AmMaverick X3 Turbo-L--
2019Can-AmMaverick X3 Turbo R-L--
2019Can-AmMaverick X3 X ds Turbo R-L--
2019Can-AmMaverick X3 X mr Turbo-L--
2019Can-AmMaverick X3 X mr Turbo R-L--
2019Can-AmMaverick X3 X rc Turbo-L--
2019Can-AmMaverick X3 X rc Turbo R-L--
2019Can-AmMaverick X3 X rs Turbo R-L--
2019KawasakiKAF820 Mule PRO-FX-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FX EPS-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FXR-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2019KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2018Can-AmMaverick X3 900 HO-L--
2018Can-AmMaverick X3 Max Turbo-L--
2018Can-AmMaverick X3 Max Turbo R-L--
2018Can-AmMaverick X3 Max X ds Turbo R-L--
2018Can-AmMaverick X3 Max X rs Turbo R-L--
2018Can-AmMaverick X3 Turbo-L--
2018Can-AmMaverick X3 Turbo R-L--
2018Can-AmMaverick X3 X ds Turbo R-L--
2018Can-AmMaverick X3 X mr Turbo-L--
2018Can-AmMaverick X3 X mr Turbo R-L--
2018Can-AmMaverick X3 X rc Turbo-L--
2018Can-AmMaverick X3 X rc Turbo R-L--
2018Can-AmMaverick X3 X rs Turbo R-L--
2018KawasakiKAF820 Mule PRO-FX-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FX EPS-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FXR-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2018KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2017Can-AmMaverick X3 Max Turbo R-L--
2017Can-AmMaverick X3 Max X ds Turbo R-L--
2017Can-AmMaverick X3 Max X rs Turbo R-L--
2017Can-AmMaverick X3 Turbo-L--
2017Can-AmMaverick X3 Turbo R-L--
2017Can-AmMaverick X3 X ds Turbo R-L--
2017Can-AmMaverick X3 X rs Turbo R-L--
2017KawasakiKAF820 Mule PRO-FX-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FX EPS-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FX EPS Camo-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FX Ranch Edition-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2017KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FX-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FX EPS-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FX EPS Camo-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FX EPS LE-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2016KawasakiKAF820 Mule PRO-FXT Ranch Edition-L--OEM BCI: U1R
2015KawasakiKAF820 Mule PRO-FXT-L--OEM BCI: U1R
2015KawasakiKAF820 Mule PRO-FXT EPS-L--OEM BCI: U1R
2015KawasakiKAF820 Mule PRO-FXT EPS Camo-L--OEM BCI: U1R
2015KawasakiKAF820 Mule PRO-FXT EPS LE-L--OEM BCI: U1R
2005MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
2004MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
2003MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
2002MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
2001MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
2000MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1999MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1997MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1996MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1995MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1994MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~Non-BCI Group Size; O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1993MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1992MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1991MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
1990MazdaMiataGroup U1R; 438CCA; 35AH; Brass SAE Terminal LHP; CCA: 438~O.E. Battery is AGM (Valve Regulated Lead Battery); Battery is vented to outside of vehicle~OEM BCI: 46A24L OEM CCA: 320; Full Throttle 12V Automotive Battery
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
8AU1R46A24LMT-U1RU1R