2018 Honda Odyssey parts sizes

What the official 2018 Honda Odyssey 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

Low beam: H11 · 55 W
High beam: HB3 · 60 W
Fog lights: H8 · 35 W

Bulb wattages printed in the 2018 Honda Odyssey owner's manual, bars to scale from zero.

2018 Honda Odyssey owner's manual

Source: the official 2018 Odyssey owner's manual (PDF from Honda).

Exterior bulbs

Position	Bulb	Watts	Manual
High beam headlight (halogen bulb type)	HB3	60 W	p. 660
Low beam headlight (halogen bulb type)	H11	55 W	p. 660
High beam headlight	LED	—	p. 660
Low beam headlight	LED	—	p. 660
Fog Light (halogen bulb type)	H8	35 W	p. 663
Fog Light	LED	—	p. 663
Front Side Marker Light	3 CP	—	p. 666

How the 2018 compares with nearby years

Against the 2017 Odyssey: The low-beam bulb and high-beam bulb are the same in both manuals.

Against the 2019 Odyssey: The low-beam bulb and high-beam bulb are the same in both manuals.

The H11 low-beam bulb appears in every Odyssey manual from 2015 to 2020 that this site has read (6 model years).

Shared with other 2018 models

HB3 (high beam headlight): 3 other 2018 models list it, including Honda CR-V, Honda Civic, Honda Pilot.
H11 (low beam headlight): 17 other 2018 models list it, including Ford Escape, Ford F-150, Ford Transit, Honda CR-V, Honda Civic, Honda Pilot.
H8 (fog light): 5 other 2018 models list it, including Honda CR-V, Honda Civic, Honda Pilot, Nissan Kicks, Nissan Rogue.

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 2018 Honda Odyssey 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.

3 positions are listed as LED in this manual. LED lamps have no separate replacement bulb; the lamp assembly is replaced.

Buying the parts for a 2018 Odyssey

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 3 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 3 pages of the manual (660, 663, 666). Before you buy, compare the number printed on the old part with the table above. See how this site reads manuals.

Other Odyssey years

All Honda Odyssey years in one table