We deliver OE-equivalent pneumatic valves fully compatible with Eaton Fuller transmissions, built for fleets, independent repair shops and wholesale dealers across North America. Precision manufacturing minimizes costly truck downtime and complies with strict heavy-duty commercial vehicle standards. Partner with Tritenco for consistent, dependable transmission components to keep your entire business operating smoothly.
We specialize in manufacturing high-performance pneumatic valves for heavy-duty Eaton Fuller transmissions, including the A-5000 Slave Valve, K-3331 Splitter Valve, and A-4740 Air Filter Regulator.
Built to meet strict OE-equivalent quality standards, our valves deliver stable, long-lasting performance for North American heavy-duty operators, stocked locally for fast domestic dispatch.
Every valve is precision-engineered to cut costly truck downtime and boost operational efficiency. We provide tailored component solutions for single-truck owners all the way to large commercial fleets.
Precision control valve, works with the full kit to deliver smooth, responsive shifting for heavy-duty truck transmissions.
K-3331 Splitter Valve Kit
High-efficiency splitter valve, paired with the system for reliable gear splitting in heavy-duty multi-speed transmissions.
A-4740 Air Filter Regulator
Clean, regulated air supply, protecting the entire pneumatic system and extending valve service life for heavy-duty trucks.
System Compatibility
Matched set of three valves, optimized for the same heavy-duty transmission platform.
Multi-Brand Fit
As a matched kit, they fit Eaton transmissions and replace other leading heavy-duty brands.
Built for Fleet Reliability
Engineered for consistent performance in long-haul, construction, and logistics fleets.
Our Commitment
Quality & Reliability You Can Trust
We build heavy-duty transmission air valves to meet strict OE-quality standards, designed to keep your fleet running safely and efficiently, mile after mile.
We follow industry-leading standards to deliver consistent performance.
OE-Quality Manufacturing
Rigorous Quality Control
Fast Lead Times
Fleet-Ready Durability
North American Coverage
Serving Repair Shops & Fleets Across the U.S., Mexico & Canada
Local warehousing delivers fast valve shipments to heavy-duty operators nationwide; Canadian fulfillment expansion under evaluation.
United States
Major truck repair shops, regional fleets and wholesale dealers supported nationwide. Ready inventory stored at our Houston, TX warehouse, with a brand-new Atlanta, GA warehouse under construction to speed up East Coast delivery.
Custom private-label valve production for distributors
North American Fulfillment
Dual stocked warehouses in USA & Mexico, new Atlanta facility under construction, flexible bulk order discount programs
Why Fleet Operators Trust Tritenco
✅ 1. OE-Equivalent Quality, No OEM Price Tag
All core A-5000, K-3331 and A-4740 valves match OE specs for Eaton Fuller transmissions, with cost-effective tiered volume pricing for all North American business clients.
✅ 2. Built to Minimize Downtime, Maximize Uptime
Rigorously tested durable valves reduce fleet downtime, supported by our established US and Mexico local inventory network for rapid dispatch.
✅ 3. Fleet-Focused Support & Reliability
We seek long-term win-win partnerships with repair shops, fleets and wholesale distributors across the U.S., Mexico and Canada, offering exclusive dealer terms and stable ongoing inventory supply.
What Our Customers Say
Verified Customer Feedback
Fleet Maintenance Manager
Mike Thompson
“The K-3331 splitter valve performed flawlessly. OEM-grade quality, perfect fit, and fast shipping from their US warehouse. Will definitely reorder for our fleet maintenance needs.”
Heavy-Duty Truck Mechanic
Marcus Williams
“I’ve installed the A-5000 slave valve in several transmissions now. The build quality is solid, and it works just like the original. Saved our customer downtime, and the price is unbeatable.”
Parts Procurement Specialist
Ema Romero
“We’ve been sourcing air filter regulators from Tritenco for over a year. Their parts are always consistent, and their fast fulfillment keeps our inventory stocked. Great seller to work with.”
Independent Truck Owner
Tyler Reed
“As an owner-operator, reliability is everything. The parts I ordered fit perfectly, arrived on time, and the quality is top-tier. Highly recommend Tritenco for any transmission valve needs.”
Request a Custom Quote
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Learn More From
FAQs
Yes, all our parts are manufactured to OEM standards, ensuring perfect fit and reliability.
We offer a 30-day hassle-free return policy for all our products.
Yes, we ship to most countries worldwide. Contact us for a shipping quote.
Yes, we produce standard high-precision shafts and bushings, with this capability supporting our transmission valve manufacturing.
We have a six‑axis robotic production line. Daily capacity reaches 1,200 sets.
We have about 30 employees. Over 10 of them are professional technicians and engineers.
Our facility holds ISO9001 and IATF16949 certifications.
We use FMEA and SPC controls in production.
Inspections include first article, process sampling, and final checks.
We have complete lab testing equipment.
These steps guarantee stable, high-quality products.
We require a 30% deposit to begin production, with the remaining 70% paid against shipping documents.
Accepted payment methods include T/T (Telegraphic Transfer) and L/C (Letter of Credit).
We work under FOB, CIF, and CNF terms.
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