What is the low beam headlight bulb size for a 1998 BMW 740iL?

The 1998 BMW 740iL uses a H1 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1998 BMW 740iL?

The high beam bulb size for the 1998 BMW 740iL is H7.

Why are my 1998 BMW 740iL headlights dim?

Dim headlights on a 1998 BMW 740iL can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H1 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1998 BMW 740iL fog light?

The 1998 BMW 740iL typically does not come with factory fog lights in all trim levels. If your vehicle is equipped with them, check the manual as sizes can vary by trim.

Is the 1998 BMW 740iL single or dual beam?

The 1998 BMW 740iL uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1998 BMW 740iL?

Yes, the 1998 BMW 740iL comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H1 LED conversion kit for the low beams.

Did the 1998 BMW 740iL change headlight bulb sizes from the previous year?

Yes — the 1998 BMW 740iL uses different bulb sizes than the 1997 model. The 1998 generation introduced this bulb configuration.

Is the 1998 BMW 740iL the first or last year to use H1 bulbs?

The 1998 BMW 740iL is the only year in the 1998 generation to use the H1 bulb for the low beam headlight.

How do I change the headlight on a 1998 BMW 740iL?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old H1 bulb counter-clockwise to remove it, then insert the new bulb and reassemble. Note: BMW vehicles use a CANbus system, so LED replacements may need an anti-flicker decoder. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 1998 BMW 740iL?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved H1 LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 1998 BMW 740iL headlights?

A pair of halogen H1 bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 1998 BMW 740iL?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the H1 position are available as direct plug-and-play replacements. Since the BMW uses CANbus monitoring, choose a CANbus-compatible LED kit to avoid dashboard errors.

The 1998 BMW 740iL has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1998 BMW 740iL

What Size Bulbs Does a 1998 BMW 740iL Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Hard (Tight clearances)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 1998 BMW 740iL Have?

Owners of the 1998 BMW 740iL will find a total of 5 lighting elements throughout the vehicle's exterior. It features a standard lighting system powered by a dual-bulb halogen configuration using separate H1 low beam and H7 high beam bulbs for precise light distribution. This model belongs to the mid years of the 740iL's 1993-2001 production span. Note that BMW vehicles typically feature a CANbus electrical monitor that checks for specific bulb resistance.

LED Flicker Warning

This vehicle is known to use a CANbus system. Installing standard LEDs may cause flickering.

Use a CANbus decoder.

Can You Put LED Bulbs in a 1998 BMW 740iL?

Upgrading to LED is one of the most effective ways to modernize your BMW's appearance and safety profile. We recommend starting your upgrade with the H1 low beams, as they see the most use. Adding a matching H7 LED kit later will complete the look and ensure consistent lighting performance. Because BMW utilizes a CANbus system, standard LED bulbs may cause "bulb out" errors on your dashboard. Always opt for "Error-Free" or CANbus-ready kits which include the necessary resistors.

1998 BMW 740iL Bulb Size Chart

Position	Bulb Size	Shop
Turn Signal Front	7528	Buy 7528 →
Low Beam	H1	Buy H1 →
High Beam	H7	Buy H7 →
Side Marker	7528	Buy 7528 →
Parking Light	7528	Buy 7528 →

How do the 1998 BMW 740iL's bulbs compare to other years?

The 1998 BMW 740iL changed bulb sizes from 1997. The previous model year used a different configuration.

The 1999 model switched to a different bulb configuration.

This bulb configuration covers the 1998 model years. ← 1997 1999 →

Finding the best installation guide...

Other 740iL Years

2001 2000 1999 1997 1996 1995 1994 1993

Other Vehicles That Use H1 Bulbs

2008 Jaguar X-Type 2006 Audi TT 2006 Audi TT Quattro 2006 Mitsubishi Outlander 2005 Audi Allroad Quattro 2005 Jaguar XK8

H1 Comparisons

H1 vs H7