2021 Toyota GR Supra Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

8 Alternator / Generator parts are listed for the 2021 Toyota GR Supra, from PURE ENERGY, FVP and REMY. PURE ENERGY 10396 carries the "Popular" badge. All of them fit every engine offered in the 2021 GR Supra.

Listed part numbers: PURE ENERGY 10396 and PURE ENERGY 10397, plus the other parts above.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

15 Battery parts for the 2021 Toyota GR Supra come from 9 brands — ACDELCO, DEKA, LUCAS and 6 other brands. The "Popular" part is DEKA 9A49.

In the AGM (Extended Life) grade, ACDELCO, DEKA, LUCAS and 4 other brands supply 8 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A49.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT89049.

6 further parts sit outside the graded sections, with the same engine-level match.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

2 Fuse parts for the 2021 Toyota GR Supra come from BUSSMANN. Every part fits both the 2.0L L4 Turbocharged and the 3.0L L6 Turbocharged.

The 150 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "150 Amp" designation — the notes column spells out what sets them apart. BUSSMANN AMI150 is listed in this group.

The 7.5 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "7.5 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATC712 is listed in this group.

This group includes BUSSMANN AMI150 and BUSSMANN ATC712.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

4 Starter Motor parts are listed for the 2021 Toyota GR Supra, from WAI GLOBAL, FVP, PURE ENERGY and 1 other brand.

In the New grade, WAI GLOBAL supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is WAI GLOBAL 31413N.

In the Remanufactured grade, FVP, PURE ENERGY and REMY supply 3 parts: factory-rebuilt units with new wear components. A representative part number is FVP 12883.

Part numbers include WAI GLOBAL 31413N and FVP 12883, among others listed above.