Subaru Forester 2003 Bulb Size

Bulb size chart

Fog Light Bulb Front - H3, H3C
Headlight Bulb High Beam and Low Beam - 9003
Back Up Reverse Light Bulb - 921
Brake Light Bulb - 7443R
Center High Mount Stop Light Bulb - 912
License Plate Light Bulb - 168, 917
Parking Light Bulb - 168, 917
Side Marker Light Bulb Front - 168NA
Tail Light Bulb - 7443R
Turn Signal Light Bulb Front - 7440A
Turn Signal Light Bulb Rear - 7440A
Ash Tray Light Bulb(Compare to original - Option 1) - 2721
Ash Tray Light Bulb(Compare to original - Option 2) - 74
Dome Light Bulb - DE3175
Map Light Bulb - DE3175
Trunk or Cargo Area Light - 168, 917

H3 Bulbs

Used for: Fog Light Bulb Front

HELLA H3 Twin Blister Standard Halogen Bulb

HELLA H3 Twin Blister Standard Halogen Bulb

Looking for a high-quality halogen bulb that will offer you increased visibility and comfort on the road? Look no further than HELLA’s H3 Twin Blister Standard Halogen Bulb. This original equipment quality bulb is designed to provide you with convincing light output, making it the perfect choice for drivers who want the best lighting performance possible. What’s more, this bulb also has a long lifetime, meaning you can enjoy its benefits for longer.

$13.55

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View all 11 replacement options for size H3 →

H3C Bulbs

Used for: Fog Light Bulb Front

View all 12 replacement options for size H3C →

9003 Bulbs

Used for: Headlight Bulb High Beam and Low Beam

PIAA 15224 H4 (9003 / HB2) Xtreme White Plus

PIAA 15224 H4 (9003 / HB2) Xtreme White Plus

Xtreme White Hybrid bulbs are great for down-road illumination, giving you the ability to see farther with greater safety and comfort. Made from high-quality quartz glass as well as alloy filaments that won't break or bend under pressure like regular metals can sometimes do! The Xtra white bulb's construction allows it to withstand intense heat longer so they last much longer before needing replacement which costs less than when replacing them every few months because of their quality material use in combination with far better-distributed weight throughout each unit making this an investment worth having even if just once.

$52.37

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Termitor Latest 9003/H4/HB2 Bulb, 6500K

Termitor Latest 9003/H4/HB2 Bulb, 6500K

These H4/9003/HB2 motorcycle LED bulbs are designed as direct replacements for standard halogen bulbs, supporting both high and low beam functions in compatible housings. They deliver significantly higher light output while maintaining a beam pattern that closely matches the original bulb to help preserve proper road illumination and reduce glare. The compact 1:1 design allows for quick plug-and-play installation without modifications or external components. An aluminum housing combined with an internal cooling fan helps manage heat and supports consistent performance over extended use. With an IP68 rating, the bulbs are protected against water, dust, and a wide range of operating temperatures. Built-in CANBUS support provides compatibility with most motorcycle electrical systems, though some models may require an additional decoder.

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TECHMAX H4/9003 LED Headlight Bulb, Windless Direct Insertion

TECHMAX H4/9003 LED Headlight Bulb, Windless Direct Inser...

Upgrade your car's lighting with the TECHMAX H4 LED Headlight Bulb, the perfect solution for those looking for a high-quality and reliable lighting option. With a fanless and windless design, the H4 LED Headlight Bulb breaks away from traditional bulb designs, providing zero-noise and a more comfortable driving experience. Direct insertion ensures that the volume is close to that of the halogen lamp, making installation simple and hassle-free with no additional wiring harness required. TECHMAX LED lights use double-sided high-quality lamp beads, providing a wider range of illumination and a more concentrated beam pattern. The result is brighter and more uniform lighting, illuminating the road ahead and ensuring a safer driving experience.

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View all 16 replacement options for size 9003 →

921 Bulbs

Used for: Back Up Reverse Light Bulb

View all 14 replacement options for size 921 →

7443R Bulbs

Used for: Brake Light Bulb, Tail Light Bulb

MAXGTRS 7443R Red LED Light Bulbs - Brake / Turn Signal / Tail

MAXGTRS 7443R Red LED Light Bulbs - Brake / Turn Signal /...

Upgrade your vehicle with the MAXGTRS 7443R Red LED Light Bulbs, delivering 360° illumination that is six times brighter than the average, thanks to their 4-sided light source and Auto Grade 3570 LED Chips. These bulbs produce a striking 24w 4000 lumens of red light, enhancing your driving safety by covering a wider area. Additionally, the bulbs’ Plug & Play design offers convenience, preventing hyper flash and error warnings without the need for extra resistors or parts. Choose the MAXGTRS 7443R Red LED Light Bulbs for a blend of bright, reliable, and easy-to-install lighting for your vehicle.

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Alla Lighting 7443R Red Flashing Light Bulb

Alla Lighting 7443R Red Flashing Light Bulb

Elevate your driving experience with Alla Lighting 7443R Red Flashing Light Bulbs. Each bulb boasts 39 high power 2835 SMD LEDs, delivering a combined 2000 lumens of vibrant light. Equipped with a smart IC driver and a projector-lens, these bulbs offer 360° light output and a stable, long-lasting performance of up to 30,000 hours. Designed for versatility, they are the perfect replacement for back-up reverse lights, brake tail lights, and center high-mounted stop lights (3rd brake lights) lamps. The bulbs feature an aluminum heat sink for optimal heat dissipation and operate efficiently within a wide voltage range of 9V~30V, thanks to the built-in intelligent IC driver.

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View all 10 replacement options for size 7443R →

912 Bulbs

Used for: Center High Mount Stop Light Bulb

Senzeal 912 LED White Bulb

Senzeal 912 LED White Bulb

Upgrade your vehicle’s reverse lighting with Senzeal T15 LED Bulbs, delivering powerful illumination exactly where you need it. Perfect for all car models requiring T15, 912, or 921 bulbs, these LEDs are the ideal replacement for your reverse lights, providing a significant boost in brightness and safety. With just 3 watts of power, these bulbs produce an impressive 180 lumens of crisp 6000K white light, making them brighter and more efficient than traditional halogen bulbs. Built with high-power 3030 SMD chips and a 360-degree lighting angle, they ensure no blind spots and provide fuller, more consistent illumination. Designed for easy installation, these plug-and-play bulbs are compatible with 98% of vehicles, thanks to their built-in CANBUS system. The intelligent temperature control driver and PC light cover protect the LED chips, extending the bulb’s lifespan and ensuring reliable performance.

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View all 14 replacement options for size 912 →

168 Bulbs

Used for: License Plate Light Bulb, Parking Light Bulb, Trunk or Cargo Area Light

View all 17 replacement options for size 168 →

917 Bulbs

Used for: License Plate Light Bulb, Parking Light Bulb, Trunk or Cargo Area Light

View all 12 replacement options for size 917 →

168NA Bulbs

Used for: Side Marker Light Bulb Front

View all 11 replacement options for size 168NA →

7440A Bulbs

Used for: Turn Signal Light Bulb Front, Turn Signal Light Bulb Rear

TUINCYN Amber Yellow 7440A/7440NA/7440 LED Bulb

TUINCYN Amber Yellow 7440A/7440NA/7440 LED Bulb

Amber 7440 Bulb Used For Turn Signals Light Bulb, Including Front And Rear Turn Signals, Not For Other Position. CANBUS Ready For 98% Vehicle, No Interference, No Hyperflash, And No Error Code, Donnot Need Extra Load Resistors. Plug& Play Bulb Easily To Be Installed Within 10 Mins.  Premium quality 6063 aluminum alloy material ensure the light bulb with good heat dissipation and bring low energy consumption. IP68 waterproof and good construction ensure the bulb works well between -40 degree~ 80 degree environment.

$19.99

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View all 6 replacement options for size 7440A →

2721 Bulbs

Used for: Ash Tray Light Bulb(Compare to original - Option 1)

Jtech 10 x T5 LED White Bulbs

Jtech 10 x T5 LED White Bulbs

The Jtech 10 x T5 LED White Bulbs are a direct replacement for all T5 Wedge Type 17 18 27 37 58 70 73 74 79 85 86 2721. They operate on a 12V input and emit bright white light with no UV or IR radiation. With an average lifespan of 50000 hours and LED SMD5050 (3chip) x 1P, these bulbs provide a long-lasting and reliable lighting solution. Jtech is known for providing superior product quality and service, making these britelites a popular choice among customers worldwide. Despite the presence of cheaper chipsets and modules on the market, these bulbs stand out for their exceptional performance and affordability.

$6.99

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View all 10 replacement options for size 2721 →

74 Bulbs

Used for: Ash Tray Light Bulb(Compare to original - Option 2)

View all 9 replacement options for size 74 →

DE3175 Bulbs

Used for: Dome Light Bulb, Map Light Bulb

EBAIFUN 31mm DE3175 Led Bulbs, White

EBAIFUN 31mm DE3175 Led Bulbs, White

Introducing our high-performance 31mm DE3175 DE3021 DE3022 DE3023 festoon LED bulbs! These bulbs are designed to provide superior illumination and enhance the overall lighting experience in your vehicle. With a sleek and compact design, these bulbs are a perfect replacement for your existing car light bulbs. Equipped with 24-SMD 4014 type chipsets, these bulbs deliver an impressive brightness of approximately 400Lm, casting a brilliant 6000K white light. The stable light body structure ensures consistent and reliable performance, instantly upgrading the lighting system of your car. One of the key advantages of these LED bulbs is their exceptional lifespan. With a longevity of over 50,000 hours, you can rely on these bulbs to illuminate your path for years to come. The input current protection feature safeguards the circuit and ensures a safe temperature range, preventing any potential damage.

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Marsauto DE3175 LED Interior Bulb

Marsauto DE3175 LED Interior Bulb

Product Benefits: More Longevity: Built-in constant current IC for long lifespan, 5 times longer than a halogen bulb. Vibration resistant, energy-saving, low power consumption to reach a long LED bulb life up to 50,000 hours. Wide Application: Interior dome lights, map lights, license plate lights, parking lights, corner lights, trunk lights, side marker lights, courtesy lights, cargo lights, trunk lights, stepwell lights, vanity lights, etc. Easy Installation: The DE3175 LED Light bulb is easy to install, just plug and play! If it doesn’t light up, please flip it 180 degrees then it should light up

$8.99

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View all 14 replacement options for size DE3175 →

This page covers the 2003 Subaru Forester and helps you verify the correct bulb size by lighting position. Instead of guessing from a single “one size fits all” list, you can match each exterior and interior lamp to the right bulb type for your specific application.

Use this guide when replacing headlights, tail lights, turn signals, license plate lights, dome lights, and other bulbs on the 2003 Forester. Trim and lighting package can vary by market and body style, so checking the exact position is the safest way to buy the right replacement.

For best fitment, compare the bulb already installed in your vehicle before ordering, especially if your Forester has been modified or fitted with aftermarket lighting. Some positions may work with halogen replacements, while LED upgrades can change brightness, beam pattern, or warning behavior depending on the socket and housing. If you are converting from halogen to LED, make sure the bulb size matches and confirm whether additional resistors or adapters are needed. Because trim, package, and market differences can affect the final fit, it is smart to inspect the existing bulb and connector before purchase.

FAQ

What headlight bulb does the 2003 Subaru Forester use?

The 2003 Subaru Forester uses a 9003 bulb for both the high beam and low beam headlight positions on this page.

What bulb size is used for the front turn signal on a 2003 Forester?

The front turn signal light bulb is listed as 7440A.

What bulb size is used for the rear turn signal on a 2003 Forester?

The rear turn signal light bulb is listed as 7440A.

What bulb fits the brake light and tail light on this model year?

Both the brake light bulb and the tail light bulb are listed as 7443R.

What is the center high mount stop light bulb size?

The center high mount stop light bulb is listed as 912.

What bulb is used for the license plate lights?

The license plate light bulb is listed as 168 or 917.

What bulb size fits the parking lights?

The parking light bulb is listed as 168 or 917.

What bulb is used for the front side marker light?

The front side marker light bulb is listed as 168NA.

What bulb fits the dome light and map lights?

Both the dome light and map light use a DE3175 bulb.

What bulb is used for the back-up reverse light?

The back-up reverse light bulb is listed as 921.

What bulb fits the trunk or cargo area light?

The trunk or cargo area light bulb is listed as 168 or 917.

What are the fog light bulb options for the front fog lamps?

The front fog light bulb is listed as H3C or H3, depending on the setup.

Does the 2003 Subaru Forester have more than one ash tray bulb option?

Yes. The page lists two ash tray bulb references: 2721 for one original comparison option and 74 for another original comparison option.

Why should I check the installed bulb before buying a replacement?

Because trim level, lighting package, market, and body style can vary, the installed bulb is the best confirmation before you order a replacement.

Subaru Forester Bulb Size by Year