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2021 · Nissan
2021 Nissan Altima parts sizes
What the official 2021 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
- 1Low beam H11 · high HB3
2021 Nissan Altima owner's manual
Source: the official 2021 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 |
|---|---|---|---|
| Low beam headlight (halogen) (Type A) | H11 | 55 W | p. 504 |
| High beam headlight (halogen) | HB3 | 60 W | p. 504 |
| Side marker (front) (Type A) | W5W | 5 W | p. 504 |
| Turn signal/park (28/8 W; if equipped) | 7444NA | 28 W | p. 504 |
| Rear stop/tail (21/5 W) | W21/5W | 21 W | p. 504 |
| Rear turn | W21W | 21 W | p. 504 |
| Rear side marker | W5W | 5 W | p. 504 |
| Backup (reversing) | 921 | 16 W | p. 504 |
| Backup assembly tail | W5W | 5 W | p. 504 |
| License plate light (wattage printed, no bulb number) | not printed | 5 W | p. 504 |
How the 2021 compares with nearby years
Against the 2020 Altima: The low-beam bulb and high-beam bulb are the same in both manuals.
Against the 2022 Altima: The low-beam bulb and high-beam bulb are the same in both manuals.
The H11 low-beam bulb appears in every Altima manual from 2015 to 2022 that this site has read (8 model years).
Shared with other 2021 models
- H11 (low beam headlight (halogen)): 8 other 2021 models list it, including Ford F-150, Ford Transit, Honda Civic, Honda HR-V, Nissan Frontier, Nissan Kicks.
- HB3 (high beam headlight (halogen)): 3 other 2021 models list it, including Ford Escape, Honda Civic, Honda HR-V.
- W5W (side marker (front), rear side marker and backup assembly tail): 15 other 2021 models list it, including Ford Escape, Ford Explorer, Ford F-150, Ford Transit, Kia Sorento, Mazda CX-5.
- 7444 (turn signal/park): 5 other 2021 models list it, including Mazda CX-5, Nissan Rogue, Toyota Camry, Toyota RAV4, Toyota Tundra.
- W21/5W (rear stop/tail): 1 other 2021 model lists it, including Nissan Sentra.
- W21W (rear turn): 3 other 2021 models list it, including Ford Bronco Sport, Ford Explorer, Nissan Rogue.
- 921 (backup (reversing)): 3 other 2021 models list it, including Nissan Frontier, Toyota Camry, Toyota Tundra.
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 2021 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 2021 Altima
- Headlight bulbs: the H11 low beam and the HB3 high beam are halogen capsules on trims that have them; buy them in pairs so both sides match in colour and output.
- Small bulbs: this manual names 9 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 (504). 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