2023 Nissan Altima parts sizes

What the official 2023 Nissan Altima owner's manual prints for replacement parts: bulbs. Every value below is copied from the manual, with the PDF page so you can check it yourself.

bulbs

1Rear stop/tail W21/5W

Replaceable bulbs: W21/5W (rear stop/tail); W21W (rear turn); W5W (rear side marker); 921 (backup (reversing))

Bulb wattages printed in the 2023 Nissan Altima owner's manual, bars to scale from zero.

2023 Nissan Altima owner's manual

Source: the official 2023 Altima owner's manual (PDF from Nissan). Engines named in the parts tables: 2.5L 4-cyl (PR25DD) and 2.0L 4-cyl turbo (KR20DDET).

Exterior bulbs

Position	Bulb	Watts	Manual
Rear stop/tail (21/5 W)	W21/5W	21 W	p. 524
Rear turn	W21W	21 W	p. 524
Rear side marker	W5W	5 W	p. 524
Backup (reversing)	921	16 W	p. 524
Backup assembly tail	W5W	5 W	p. 524
License plate light (wattage printed, no bulb number)	not printed	5 W	p. 524

How the 2023 compares with nearby years

Against the 2022 Altima: the two manuals do not print the same part types, so there is nothing to compare line by line.

Against the 2024 Altima: the two manuals do not print the same part types, so there is nothing to compare line by line.

Shared with other 2023 models

W21/5W (rear stop/tail): 1 other 2023 model lists it, including Nissan Sentra.
W21W (rear turn): 2 other 2023 models list it, including Nissan Frontier, Nissan Rogue.
W5W (rear side marker and backup assembly tail): 16 other 2023 models list it, including Hyundai Elantra, Hyundai Palisade, Hyundai Tucson, Kia Carnival, Kia Sorento, Kia Soul.
921 (backup (reversing)): 1 other 2023 model lists it, including Toyota Camry.

A shared number means the same replacement part fits both cars, so one spare can cover two cars in the household.

What the manual does not print

The 2023 Nissan Altima owner's manual does not list wipers, battery, filters and oil sizes; for the battery, read the label on the battery fitted to the car, then check the size against the BCI group chart; for wipers, measure each blade end to end and buy the nearest whole-inch size.

Buying the parts for a 2023 Altima

Small bulbs: this manual names 5 replaceable bulb positions. Wedge bulbs such as W5W and 194 differ from twist-socket bulbs such as 7443 or 3157, so match the full number, including suffixes like NA (amber).

Check it on your car

Trim, engine and lighting package change some of these parts, so match the row that names your engine or trim. The facts on this page come from 1 page of the manual (524). Before you buy, compare the number printed on the old part with the table above. See how this site reads manuals.

Other Altima years

All Nissan Altima years in one table