Market-leading IPF LED headlamp bulb series has evolved as the F series. It provides outstanding performance of brightness and wide
light distribution. Highly regarded "all-in-one" body assembly H4 type LED bulb incorporates great new technologies.
The new F series LED bulb is developed to provide all time high lighting performance.


• Improved road visibility for distance and width without loss of LED light
• Maximized light output giving of IPF's accumulated knowledge and key technology
• Enhanced lumen maintenance so as to maintain LED bulb's initial light output and brightness
• Ensures reliability and improved road visibility when night-time driving
• Offering a proper beam pattern and bright illumination
• Truly replicates halogen filament placement

Improved Road Visibility

Replicates halogen bulb filament, providing 6500k true white daylight color. Improved road visibility ensures safety night-time driving.
Factory Halogen Bulb

Three Key Features

IPF brought the all-new three technologies into the F series LED bulbs. Enhanced heat release design to offer the best and brightest
lighting performance. The thinner LED bulb body, the better light pattern can be made. The thicker LED bulb, the better heat release
efficiency can be achieved. IPF's performance LED bulbs can balance excellent light distribution characteristics with outstanding
brightness. 5400 lumen in total flux (conventional ratio 136% UP) is a sizable improvement in lighting performance.

Technology 1 "Dual CPS - Dual Copper Post Structure-" (Patented Design)
• IPF's performance LED bulbs feature the most efficient method for heat release
• Adopts our patent technology, "Dual CPS"
• Advanced manufacturing technology "Post Structure" provides high-spec copper substrate
• "Dual CPS" delivers thin structure of LED bulb body and conducts heat given off from LED circuits to the heatsink
Technology 2 "Highly Efficient Heat Conduction & Release Design"
• Proven reliable heatsink using extruded aluminum alloy A6063
• Optimized heatsink incorporating small-sized cooling fan
Technology 3 "LACH - LED Air-Cooling Hole-" (Patented Design)
• "LACH" is, IPF uniquely designed, a simple but effective cooling structure
• Chimney effect makes an updraft and lower temperature air passing through the LACH
• Optimized the shape of "LACH", ensures sound beam pattern making full use of light distribution simulation system
• Maximized heat release efficiency incorporating supersized LED circuit board (460% larger than previous model)

New Circuit Design "SEPIC" System

"SEPIC" system provides high operational reliability and reduction of electrical noise.

"Single Ended Primary Inductor Converter" offers several technology merits:
• Miniaturization of electronic circuits
• Improved electromagnetic compatibility (EMC)
• Highly reliable long-lasting operation
• Employs Japanese-made hybrid condenser, three terminal filter and common mode noise rejection choke coil
• Well-selected high quality components provide protection against electromagnetic interference
• IPF's latest LED bulbs are compatible with hybrid vehicle, EV and PHEV both 12/24v vehicles

Electrical Noise Protection - Safety Features

Equipped with number of high-spec safety features and enhanced electromagnetic compatibility.

• Optimized board pattern
• Improved electromagnetic compatibility to reduce electrical noise
• Integrated high-performance noise filter
• Highest quality noise reduction performance
• Large number of protection features according to OEM standards
• Electrostatic/pulse protection
• Over/under voltage protection
• Overcurrent protection

Easy Installation (4 Steps)

The single, "all-in-one" body assembly allows for ease of installation.
There are no additional drive unit boxes or long cords to complicate
the installation. The unit plugs directly into factory outlet using a fully
sealed coupler. Built-in electric fan mitigates the buildup of heat and
continuous airflow protects electric components' damage.

Product Dimensions

Required installation clearance is 25mm from the rear of halogen bulb. Clearance about 100mm needed when removing halogen bulb.
If there is not enough space to allow full range of the LED bulb's movement, then remove your vehicle's headlamp units for installation.

Built-in High Beam Indicator Lighting-up Circuit

Incorporates the built-in high beam indicator lighting-up circuit, which solves an issue of compatibility with some vehicle models using
factory halogen bulb. If the circuit is not built in LED bulb, your vehicle's high beam indicator on the dash may not work properly.
*Old model year vehicles (no compatibility with LED bulbs) may additionally need the optional high beam indicator lighting-up circuit. Part number: WA-4.

Uncompromised Quality

• Selected highly durable quality parts
• Manufactured in a strict quality control regime
• Meets OEM demand standard test
• Based on IPF's product performance evaluations
• Adds muddy salted water test
• Conducts real car endurance test
• Passed toughest evaluation tests
• Provides improved durability to withstand in conceivable harsh usage environment
• Compatible with Hybrid vehicles and ECO idling or start-stop cut off system
*In general usage environment, IPF's LED conversion kits deliver a sense of safety while using it for a long time as vehicle lighting is the most important security part and it offers a maintenance-free secure feeling.

Overall Look

Incorporates "X (CROSS) - LINE" inspired by the powerful light emanating from the LEDs, emphasizing a sense of power and speed.
IPF offers a distinctive look on the F series LED bulbs (H4 type), adding the bright emblem on the top of the bulb.
Authenticated laser engraving IPF logo on the side of semi-gloss black finish Aluminum die cast alloy heatsink.
Pink is IPF's corporate and representative color of our passion of craftsmanship, and the O-ring on the bulb uses the color.


Part Number Bulb Type Power Consumption Color Temperature Price
F341HLB H4 (9003) 12v/24v 28w 6500k OPEN
///Term description///
Lumen It is the unit of the optical energy generated from an electric bulb.
When numerical value is large, the brightness of the bulb become brighter.
Candela Measure the brightest point numerically when a head lamp is equipment.
kelvin Kelvin temperature is a numerical measurement that describes the color appearance of the light produced by the lamp and the color appearance of the lamp itself,
expressed on the Kelvin (K) scale.

Light source
Halogen Halogen light bulbs are a special type of incandescent light bulb.
They are filled with halogen gas, have a tungsten filament, and are enclosed in quartz glass.
It is intend to be out of date, but still bright and gentle light in the eyes.
H.I.D High Intensity Discharge, it the new replacement technology for halogen headlights.
Brightness is the biggest advantage of an HID conversion. Not only will you be able to see farther and better at night, but other drivers will be able to see as well.
Its estimated that an HID conversion kit will increase your brightness from a halogen set up as much as 300%.
LED LED lighting is a lamp or other light that uses light-emitting diodes (LEDs) as a source of illumination.
LEDs are more expensive than traditional bulbs. They are heat sensitive, so if they are not used with a steady and consistent current, they can stop working or fade quicker.
These lights are also usually best used in directional lighting rather than room lighting, although some changes in design may improve this.
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