About Us

Built for Your Heavy-Duty Transmission Parts Fleet

Your trucks depend on parts that perform, shift after shift, mile after mile. That’s why we build our heavy-duty transmission air control valves to strict OE specifications — for a precise fit and reliable performance you can count on.

We focus on what matters most to you: consistent quality, parts that last, and orders that ship fast to keep your fleet moving.

We are Tritenco, a US-based heavy-duty transmission parts manufacturer focused on keeping your fleet moving.

Our products

Precision Fit for Transmission Parts You Can Trust

Built to OEM specifications, our valves are designed to fit right the first time and perform reliably, so you don’t have to worry about comebacks.

Direct-Fit Compatibility for Your Transmission

Our valves are made as direct-fit replacements for transmissions in heavy-duty commercial trucks, and work with most Eaton Fuller and equivalent systems.

Built to Keep You On The Road

Engineered to handle the demands of long-haul, construction, and logistics fleets, these parts work as hard as your trucks do, every mile.

500+

Fleets & Shops Served

Fast shipping

Orders Ship Quickly

99%

Order Accuracy Rate

4.9/5

Average Customer Satisfaction

How We Work For You

Your Journey From Order To Delivery

Where to Find Us Online

Shop high-performance Eaton Fuller transmission valves directly via our official website tritpre.com, or browse aftermarket listings on Amazon and eBay. Our site is your top destination for bulk wholesale orders for repair shops and fleets.

Flexible Ways To Place Your Order

Order via our official shop , Amazon or eBay, submit a wholesale quote for bulk fleet stock, or contact sales for offline bulk procurement. Tiered volume pricing applies for large inventory purchases.

Fast & Reliable Shipping

Parts ship quickly from our US and Mexico local warehouses to slash transit lead times.

Support You Can Count On

Full technical support for valve fitment and compatibility. As a professional valve manufacturer, we back every unit with a 1-year full warranty.

Sustainability

Built to Keep Your Trucks On The Road

Your fleet depends on parts that work reliably, shift after shift. We build transmission valves to strict specifications, so you get consistent performance and fewer breakdowns.

Our production process is certified to IATF 16949 and ISO 9001 standards, so every part meets global quality requirements.

View Our Parts

Designed for Real-World Heavy-Duty Use

We build our valves to handle the daily demands of your trucks — from the parts that fit right the first time, to the performance that keeps you moving, shift after shift.

OE-Quality Part :

Built to match OEM specifications, so they fit and perform just like the original parts.
Fast Order Fulfillment :

Most orders ship quickly, so you don’t have to wait weeks for a replacement valve.
Direct-Fit Replacements :

Designed to drop right in, so your techs don’t waste time modifying parts.
Reliable Performance :

Engineered to handle the daily demands of heavy-duty trucks, mile after mile.

Trust and Worth

Trusted by Fleets & Repair Shops

As a Heavy-Duty Transmission Parts Manufacturer, Built to IATF 16949 Standards

Our valves are manufactured to meet IATF16949 quality management system standards — the global benchmark for automotive and heavy-duty parts. This certification guarantees consistent quality, strict process control, and reliable performance you can trust, shift after shift.

✅ Consistent Fit & Function
Every valve meets strict dimensional and performance standards, designed to work seamlessly with Eaton Fuller and equivalent heavy-duty transmissions, so it fits right the first time, no modifications needed.
✅ Long-Lasting Reliability
Built to withstand the harsh demands of heavy-duty trucks, reducing unexpected breakdowns and costly downtime.
✅ Process You Can Trust
From raw material to final testing, every step follows IATF 16949 protocols, so you get the same quality every time you order.

These standards are why fleets and repair shops across North America rely on Tritenco for parts that perform consistently, shift after shift. Every valve we make — including our [A-5000, K-3331, and A-4740 series] — is built to the same strict specifications, so you can order with confidence.

Precision Clean

A-5000 valve bodies in ultrasonic cleaning

Sealed for Reliability

Impregnation for Leak Prevention

Built to Last

Tested for Tightness

K-3331 & A-4740 valves installed on Eaton Fuller transmission

Proven On The Road

Reliable In Real-World Use

Tritenco valves on Eaton Fuller transmission

Proven On The Road

Built for Real Fleets

Repaired Eaton Fuller with Tritenco valve kit

Repaired & Ready

Full Valve Kit Installed