Hella E-Code 5in x 7in H4 Conversion Headlamp Kit - 003427861

The Hella E-Code 5in x 7in H4 Conversion Headlamp Kit (Part #003427861) is a purpose-built headlight upgrade solution for vehicles that accept the standard 5×7-inch rectangular headlamp format. Engineered to European E-Code standards, this H4 conversion kit from Hella — one of the most respected names in automotive lighting — delivers a more refined beam pattern and broader international compliance than many factory-installed sealed-beam units. Whether you're refreshing an aging truck, off-road rig, or classic car that runs 5×7 headlamps, this kit is a straightforward path to a higher-quality lighting setup.

Key Features & Benefits

• E-Code Compliance: Built to international E-Code lighting standards, meaning the optics are designed to produce a precise, controlled beam pattern — reducing glare for oncoming drivers while maximizing road illumination for you.
• H4 Bulb Format: The H4 dual-filament configuration supports both high and low beam from a single replaceable bulb, making future bulb swaps easy and giving you the flexibility to upgrade to H4-compatible LED or halogen bulbs from a wide range of aftermarket suppliers.
• 5×7-Inch Fitment: Sized specifically for the common 5×7-inch (also sometimes noted as 5.5×7.5-inch housing depth) rectangular headlamp opening, making this a direct-fit conversion for a wide range of vehicles that use this format.
• 12V System Compatibility: Rated for standard 12-volt automotive electrical systems — no additional wiring modifications required for most applications.
• Hella Engineering: Hella is a globally recognized OEM and aftermarket lighting supplier. Their E-Code housings are known for quality glass optics and consistent beam geometry, a meaningful upgrade over aging plastic or factory sealed-beam units.
• Replaceable Bulb Design: Unlike sealed-beam headlamps, the H4 conversion housing uses a replaceable bulb, so you only replace the bulb when it burns out — not the entire headlamp assembly.

Specifications

• Part Number: 003427861
• SKU: HELLA003427861
• UPC: 760687722069
• Headlamp Size: 5 inches × 7 inches
• Bulb Type: H4 (dual filament — high and low beam)
• Voltage: 12V
• Standard: E-Code (meets international automotive lighting standards)
• Brand: Hella

Fitment

This kit is designed for any vehicle that uses a 5×7-inch rectangular headlamp opening and a 12V electrical system. This format is common across a wide range of trucks, Jeeps, off-road vehicles, and classic cars — including many Toyota trucks and 4Runners of various generations, older Ford trucks and Rangers, Jeep Wrangler YJ, and numerous other domestic and import platforms that share this headlamp size standard.

Because headlamp socket wiring varies by vehicle, buyers should confirm their existing headlamp connector is compatible with the H4 bulb socket, or plan to use an inexpensive H4 wiring adapter harness if needed. If you are unsure whether this kit fits your specific vehicle, contact the ThreePiece.us fitment team before ordering — they can verify compatibility for your application.

Note: This kit is listed as a universal product sized for 5×7-inch headlamp applications. It is not vehicle-specific; fitment depends on your vehicle's existing headlamp opening size and electrical system.

What's in the Box

This listing is for the Hella E-Code 5×7 H4 Conversion Headlamp Kit as sold under part number 003427861. Please confirm with the ThreePiece.us team whether a bulb is included or if an H4 bulb needs to be sourced separately, as kit contents can vary. Contact us prior to purchase if you need clarification on exactly what is included.

Why Buy from ThreePiece.us

• Free Shipping: Every order ships free — no minimum required.
• Affirm Financing: Pay over time with Affirm. See if you qualify at checkout — no need to buy upfront.
• Expert Fitment Support: ThreePiece.us has served 10,000+ customers and has 10+ years of experience helping enthusiasts get the right parts. Call or email before you order if you have fitment questions.
• In Stock: This product is regularly stocked and ready to ship — no long lead times.
• Fitment Help Available: Use the on-site fitment help tool or contact the team directly to verify this kit works for your vehicle before you add to cart.

Frequently Asked Questions

Q: What vehicles does the Hella 003427861 fit?

A: This kit fits any vehicle with a standard 5×7-inch rectangular headlamp housing running a 12V electrical system. It is a universal-size conversion, not a vehicle-specific assembly. Common applications include older Toyota trucks, Jeep Wrangler YJ, Ford Rangers, and many other platforms using this headlamp format. If you're unsure, reach out to the ThreePiece.us team for a fitment check.

Q: Does this kit include an H4 bulb?

A: The product is listed as a conversion headlamp kit. To confirm whether an H4 bulb is included or needs to be purchased separately, contact ThreePiece.us before ordering. H4 bulbs are widely available and inexpensive if not included.

Q: Can I use an LED H4 bulb with this housing?

A: The H4 socket format is compatible with many H4 LED conversion bulbs available on the aftermarket. However, performance and beam pattern with LED bulbs will depend on the specific LED product chosen. The housing itself is designed around the H4 bulb format, giving you flexibility to run halogen or LED H4 bulbs.

Q: Is financing available?

A: Yes — ThreePiece.us offers financing through Affirm. You can check if you qualify directly at checkout with no commitment required to see your options.