Hella

The best Hella products for most Subaru drivers are the Supertone horn kits — loud, dual-tone 12V horns that replace the quiet factory horn on the WRX and WRX STI — and this collection also covers Sharp Tone horns, a twin trumpet kit for Toyota, an H4 headlamp conversion, and a compact LED scene light. For a complete plug-and-play Subaru install, look for a kit that bundles the horns with a vehicle-specific bracket and wiring harness. Check your year and model and mounting space before ordering.

A horn upgrade is about being heard: dual-tone kits pair a low and a high frequency so the sound carries better in traffic than a single factory horn. The H4 conversion updates older sealed-beam style lighting, and the Value Fit LED light bar in this lighting range adds wide scene illumination. Bracket kits simplify installation on the 2002-2021 WRX and WRX STI; universal kits need basic 12V wiring.

Hella is a long-established automotive supplier known for lighting, horns, and electronics fitted both as original equipment and as aftermarket upgrades. The Supertone is its signature horn here: the Hella Supertone Horn Kit 12V 300/500Hz — Universal pairs the two tones in one kit, and the Hella Sharp Tone Horn Kit 12V 415/350Hz in Yellow offers a different tone pairing and a bright finish. A red replacement Supertone cage is also listed.

GrimmSpeed is a Subaru-focused performance brand, and here it supplies the mounting bracket and wiring harness that turn Hella horns into a tidy WRX and WRX STI kit, as in the GrimmSpeed Hella Horn Kit for 2002-2021 WRX/STI. Perrin takes the same approach with its own Supertone mounting bracket for Subaru applications, reflecting Perrin's long focus on WRX and WRX STI parts and accessories.

Diode Dynamics is an American LED lighting specialist, a natural companion if you are updating visibility at the same time, with LED bulbs, fog lights, and light bars for many of the same cars. For more background on choosing front lighting, read our guide to picking and installing the right headlights.

Are Hella Supertone horns a direct replacement?

On the WRX and WRX STI, the bracket kits are designed for those applications and include a harness to simplify wiring. Universal kits fit many vehicles but require basic 12V wiring and a suitable mounting location, so check your year and model before ordering.

What is the difference between Supertone and Sharp Tone?

Both are dual-tone Hella horn kits, but they use different frequency pairings — the Supertone listed here is 300/500Hz and the Sharp Tone is 415/350Hz — which changes the character of the sound. Choose by the tone you prefer and by whether you want a vehicle-specific bracket kit.

Do I need a wiring harness for a horn kit?

A harness is recommended, especially for dual-horn kits, because it supplies proper power and grounding without cutting factory wiring on bracket-kit applications. Several kits already include bracket and harness; universal kits should use an appropriate relay and fuse.

Is the Hella H4 conversion for my car?

The H4 Headlamp Conversion Kit is listed as universal for vehicles that use that style of lamp housing. Confirm your factory lamp type first and check your year and model; it does not fit cars with sealed LED headlamp assemblies.