2013 Honda Fit Headlight Bulb Guide

The correct headlight bulb for a 2013 Honda Fit is the H4 (also known as 9003 or HB2) dual‑filament halogen, 12V 60/55W, which serves both low and high beams in a single bulb on each side. This applies to Base and Sport trims; factory HID or LED headlights were not offered for this model year. Canadian models with daytime running lights use the same H4 bulb at reduced voltage for DRL function.

Bulb specifications and compatibility

The 2013 Fit uses a single dual‑beam bulb per headlamp housing, meaning one bulb provides both low and high beam functions. Below are the key specifications and compatibility notes to ensure you purchase the correct part.

• Bulb type: H4 (aliases: 9003, HB2)
• Filament setup: Dual (low/high beam in one bulb)
• Voltage/wattage: 12V, 60/55W (standard OEM spec)
• Base: P43t (standard H4 base)
• Quantity: Two bulbs per vehicle (one per headlamp)
• Trims: Fits all 2013 Fit trims (Base and Sport); fog lights—if equipped—use separate H11 bulbs and are not part of the headlight assembly
• DRL: In markets with DRL, the headlight high‑beam filament is typically run at reduced intensity for daytime use

As long as you select an H4/9003/HB2 halogen bulb, it will be physically and electrically compatible with the 2013 Fit’s reflector headlamps.

Optional upgrades and key considerations

Owners sometimes consider brighter halogens or LED retrofits. Each option has trade‑offs in brightness, beam pattern, legality, and heat management. Keep the following in mind before upgrading.

• Premium halogen (H4): “+” output halogen bulbs can increase usable light but may have shorter lifespans; ensure 60/55W rating to avoid wiring stress
• LED H4 retrofits: Can appear brighter but may produce glare or poor cutoff in reflector housings; check local laws and choose units with good optical design
• HID kits: Not recommended for reflector housings; often illegal and prone to glare without projector optics
• CANBUS/resistors: Usually not required on the Fit for halogen-to-LED swaps, but some LED kits include drivers to prevent flicker
• Aiming: After any bulb change—especially upgrades—verify headlight aim to maintain visibility and avoid blinding other drivers

For most drivers, a quality name‑brand H4 halogen offers the best balance of beam quality, legality, and reliability in the stock reflector housing.

Replacement tips and tools

Replacing the H4 bulbs is straightforward with basic hand access through the engine bay. Plan a few minutes per side and take care not to touch the glass portion of the new bulb.

• Tools: Typically none required; gloves recommended
• Access: Open hood, locate rear of headlamp, remove rubber dust cover
• Connector: Unplug the 3‑pin H4 connector from the bulb
• Retainer: Unclip the spring retainer, remove old bulb
• Install: Insert new bulb (align tabs), re‑clip spring, reconnect plug, reinstall dust cover
• Cleanliness: Handle bulbs by the base; if touched, clean glass with alcohol to prevent hot spots
• Final check: Test low and high beams and verify aim against a wall

Working one side at a time helps you reference the correct orientation and ensures a consistent, secure fit on both headlamps.

Frequently asked checks

If you’re unsure about fitment or experiencing issues after installation, these quick checks can help diagnose the problem.

• Confirm part number on old bulb or in the owner’s manual: H4/9003/HB2
• If one side is out: Swap bulbs side‑to‑side to isolate bulb vs. wiring issue
• If both are out: Inspect headlight fuses and the headlight switch circuit
• DRL behavior: Reduced‑brightness high beams for DRL is normal in some markets
• Glare or dark spots: Re‑seat bulb and recheck headlight aim; consider returning to standard halogen if using retrofit LEDs

Systematic checks usually pinpoint whether the issue is the bulb, the connector, or the vehicle’s power/ground path.

Summary

The 2013 Honda Fit uses H4 (9003/HB2) dual‑filament halogen bulbs—12V 60/55W—for both low and high beams in each headlamp. Choose quality H4 replacements, avoid over‑wattage options, and verify aim after installation. LED or HID retrofits can compromise beam pattern in the stock reflector housings and may not be road‑legal in all areas.

Are H11 and 9005 the same bulb?

No, H11 and 9005 bulbs are not the same and are not interchangeable due to differences in their base style, plug design, and physical dimensions. The H11 bulb has a distinct two-prong connector that is smaller and closer together, while the 9005 bulb (also known as HB3) has a wider, undivided prong set. Additionally, 9005 bulbs are typically designed for high beams, providing more light output and a longer beam distance, whereas H11 bulbs are generally used for low beams due to their lower lumen output and beam pattern, according to this sealight blog. 
Key Differences Between H11 and 9005

• Base and Connector: H11 bulbs have two narrow prongs separated by a plastic tab, while the 9005 bulb has two wider, undivided prongs. 
• Application: 9005 is primarily used for high beams, providing brighter, farther-reaching light, while H11 is mainly for low beams, offering a defined cutoff to prevent dazzling oncoming traffic. 
• Brightness and Wattage: 9005 bulbs have a higher wattage (typically 65W) and a higher lumen output, suited for high-beam functionality, whereas H11 bulbs are a lower wattage (typically 55W) with lower lumen output for low-beam use. 
• Size: The overall physical size of the H11 bulb and its connector is smaller than that of the 9005 bulb. 

Why They Are Not Interchangeable

• Physical Fitment: The different base designs and sizes prevent H11 bulbs from fitting into a 9005 socket and vice versa. 
• Electrical Compatibility: Attempting to use them in the wrong socket can lead to the bulb burning out, damaging the headlight assembly, or creating dangerous driving conditions due to improper beam patterns. 

How to Determine Your Vehicle’s Bulb Type

• Vehicle Manual: Check your owner’s manual for the correct bulb size. 
• Consult a Bulb Finder: Use online fitment guides provided by auto bulb manufacturers. 
• Check the Existing Bulb: The bulb number is usually imprinted on the bulb’s base. 

What kind of bulb does a Honda Fit headlight take?

Honda Fit (2019-2020) Bulb Size Chart

Headlights (High Beam and Low Beam)	H4 (9003 HB2)
Luggage Compartment Light	T10 (194 168)
Map Light	T10 (194 168)
Parking Light	7443 (7440)
Reverse Light (Back-Up Light)	7443 (7440)

What kind of headlight bulb does a 2013 Honda Fit take?

H4, 9003, dual beam.

What does a 7443 bulb fit?

A 7443 bulb is compatible with sockets designed for 7443 and 7440 bulbs, though a 7440 bulb will not work in a 7443 socket. However, compatibility isn’t guaranteed and can be affected by factors like the specific vehicle’s socket design (standard or CK) or the presence of a lighting control module, requiring a check of the owner’s manual before purchasing. Common compatible bulb numbers include 7443LL, 7440, 992, T20, W21W, and WY21W, though some are single-filament and will only work in the 7440 function of a dual-filament 7443 socket. 
Key Considerations for 7443 Compatibility

• Dual vs. Single Filament: The 7443 is a dual-filament bulb that serves two functions, such as parking and brake lights or turn and parking lights. A 7440 is a single-filament bulb. 
• Socket Compatibility: While the 7443 and 7440 have the same physical size, their electrical functions differ. A 7443 bulb can work in a 7440 socket, but a 7440 bulb cannot function in a 7443 socket. 
• Socket Type (Standard vs. CK): Some vehicles use CK sockets, which are a different design that can affect compatibility. Check your vehicle’s owner’s manual to determine the correct socket type before purchasing. 
• CANBUS and Control Modules: Some vehicles have CANBUS (Controller Area Network Bus) systems that monitor bulb function. If your car has a lighting control module that uses the same bulb for multiple functions (like a turn signal and brake light), a standard LED bulb may not work correctly. 
• Cross-Reference Numbers: Look for bulbs with cross-reference numbers such as 7443LL, 7440, 992, T20, W21W, and WY21W, but always verify they are dual-filament if your application requires it. 

How to Ensure Compatibility

1. 1. Check Your Owner’s Manual: Your vehicle’s owner’s manual is the best source for identifying the correct bulb type and specifications. 
2. 2. Inspect the Socket: Examine your vehicle’s bulb socket to confirm its design. 
3. 3. Understand Your Application: Determine if the socket uses a single- or dual-filament bulb and how many functions it controls. 
4. 4. Consider Adapters: If you’re installing LED bulbs and encounter issues like hyperflashing or error messages, you may need to use aftermarket resistors or adapters.