2021 Honda Odyssey Bulb Sizes (Headlight, Tail, Fog)
A complete guide to all bulb sizes for your 2021 Honda Odyssey, including upgrade tips and replacement instructions.
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick reference
| Location | Bulb Size | Type |
|---|---|---|
| Low Beam Headlight | H11 | Halogen/LED |
| High Beam Headlight | 9005 | Halogen/LED |
| Fog Light | H8 or H11 | Halogen/LED |
| Daytime Running Light | LED (Integrated) | LED |
| Front Turn Signal | 7443 (CK) | Incandescent |
| Rear Turn Signal | 7440A | Incandescent |
| Brake Light | LED (Integrated) | LED |
| Tail Light | LED (Integrated) | LED |
| Reverse Light | 921 | Incandescent |
| License Plate Light | 168 | Incandescent |
| Front Side Marker | 168 | Incandescent |
| Rear Side Marker | LED (Integrated) | LED |
| Dome/Map Lights | 194 or LED | Incandescent/LED |
Note on Trims: The 2021 Honda Odyssey offers various lighting configurations depending on the trim level. Lower trims (LX, EX) generally come equipped with halogen headlights. Higher trims (EX-L, Touring, Elite) often feature full LED headlight assemblies for both low and high beams, as well as integrated LED daytime running lights, brake lights, and tail lights. Fog lights can be either halogen or LED depending on the trim and packages. Always verify your specific setup before purchasing replacement bulbs.
LED vs Halogen Upgrade Considerations
Upgrading from halogen to LED bulbs in your 2021 Honda Odyssey can significantly improve light output, lifespan, and aesthetic appeal. However, there are several factors to consider to ensure a smooth transition:
- CANBUS Errors: Modern vehicles like the 2021 Odyssey utilize a CANBUS (Controller Area Network Bus) system to monitor various electrical components, including lighting. Halogen bulbs draw more power than their LED counterparts. When you install LED bulbs, the lower power draw can be misinterpreted by the CANBUS system as a
More specs for the 2021 Honda Odyssey
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2021 Honda Odyssey Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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