Contact us

Built by a manufacturer, driven since 2012

Tetron Auto Parts · 4798 Mission Blvd, Unit B, Montclair, California 91762, United States · (909) 788-5979 · sales@tetronauto.us · Monday–Friday, 8:30 AM – 5:00 PM PT

Tetron Auto Parts has been keeping vehicles on the road since 2012 — and we're not just a reseller. We're a manufacturer. We design and produce our BOXI line of aftermarket automotive parts and sell them directly to the people who install them, which means you get factory-direct quality and pricing without the layers of markup that come with a long supply chain.

What we make

Our catalog spans more than 9,000 parts across the systems that matter most for repair and maintenance: suspension and steering — control arms, ball joints, tie rod ends, sway bar links — along with brakes, lift supports and gas struts, wiper transmission linkages, door handles, and much more. Every part is engineered to meet or exceed OEM specifications and cross-referenced to the original equipment and interchange numbers, so you can match it to what came off your vehicle with confidence.

Why buy direct from the manufacturer

Because we manufacture what we sell, we control quality from the ground up and pass the savings straight to you. No distributor markup, no guessing where a part came from — just components we engineer, build, and stand behind, shipped from our own warehouse.

Where else you'll find us

This store is not where BOXI started. We have been selling the same parts on the major marketplaces for years, and those storefronts carry public, independently recorded feedback you can check for yourself:

• eBay — BOXI AUTO-PARTS (seller liftstrutstore): our public seller record there shows 99.8% positive feedback across more than 600,000 items sold, with over 27,000 store followers.
• Amazon — the BOXI brand store, where our catalog is sold under the same brand.
• tetronauto.com — our other storefront, run by the same company from the same Montclair warehouse, staffed by the same team, on the same phone number. Prices are identical across both sites.

Those figures are eBay's, not ours — they are shown on our storefront there and update on their own. We mention them because buying from a shop you have not used before is a leap of faith, and we would rather point you somewhere you can verify our track record than ask you to take our word for it.

Fitment comes first

The most expensive part is the one that doesn't fit. That's why every listing is built around fitment: use our Year / Make / Model search to confirm compatibility before you buy, and review the full specifications and interchange numbers on each product page. If you're ever unsure, reach out — we'd rather help you get it right the first time.

Quality and warranty

Every BOXI part is manufactured to strict tolerances and backed by a limited warranty against manufacturing defects: 5 years on hood, trunk and tailgate lift supports, and 2 years on all other BOXI parts. The exact term for any given part is listed in the specification table on its product page. We build our parts to perform like the original equipment — and often to outlast it.

Fast shipping to all 50 states

We hold our inventory in-house and ship from our warehouse at 4798 Mission Blvd, Unit B, Montclair, California, to customers in all 50 states. Shipping is free on every order with no minimum, and orders placed before 1:00 PM PT on a business day go out the same day.

Wholesale & trade accounts

Run a repair shop, garage, or parts business? As the manufacturer, we're set up to supply you directly. We offer wholesale pricing and dedicated trade accounts for business customers — get in touch to open an account and access B2B pricing on the parts you order most.

Here to help

Whether it's a fitment question, an order, or setting up a wholesale account, a real person is ready to help, Monday to Friday, 8:30 AM – 5:00 PM PT. Email us at sales@tetronauto.us or call (909) 788-5979 and we'll get back to you. Thanks for choosing Tetron Auto Parts — we're proud to build the parts that keep you moving.