We deliver OE‑equivalent pneumatic valves fully compatible with Eaton Fuller transmissions, built for fleets, independent repair shops and wholesale dealers. Precision manufacturing minimizes costly truck downtime and complies with strict heavy‑duty commercial vehicle standards. Partner with us 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 — produced by a source with background in OE‑component manufacturing, 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 serve as replacement parts for other 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
Our heavy‑duty transmission air valves meet strict OE‑grade standards, built to keep your fleets running safely, efficiently, and minimize costly downtime mile after mile.
We follow established industry standards to deliver consistent performance.
OE-Grade Manufacturing
Full In House Quality Inspection
Fast US Warehouse Fulfillment
Heavy-Duty Fleet Durability
Warehouse Coverage
Serving Repair Shops & Fleets Across the U.S.
Local warehousing delivers fast valve shipments to heavy‑duty operators nationwide. Mexico warehouse facility established; inventory pending. Export inquiries for other markets available upon request.
United States
Major truck repair shops, regional fleets and wholesale dealers supported nationwide. Ready inventory stored at our Houston, TX warehouse.
Custom private-label valve production for distributors
US‑Based Warehouse Fulfillment
Stocked inventory at our USA warehouse. Flexible bulk‑order discount programs available.
Why Fleet Operators Trust Tritenco
✅ 1. OE-Equivalent Quality, No OEM Price Tag
Manufactured by a source with background in OE component production. Our core A-5000, K-3331 and A-4740 valves meet full OE specifications for Eaton Fuller transmissions. Tiered volume pricing delivers cost‑effective solutions for business buyers.
✅ 2. Built to Minimize Downtime, Maximize Uptime
Rigorously tested durable valves help cut costly fleet downtime. Our local inventory network enables fast local dispatch to get trucks back on the road.
✅ 3. Fleet-Focused Support & Reliability
We build long‑term, win‑win partnerships with repair shops, fleets and wholesale distributors. Access exclusive dealer terms plus consistent, stable inventory supply.
TESTIMONIALS
We build long‑term, win‑win partnerships with repair shops, fleets and wholesale distributors. Access exclusive dealer terms plus consistent, stable inventory supply.
▸ scatteredrockranch
“great seller thank you”
A‑4740 Air Filter Regulator
▸ fullertrain
“Very efficient, good quality parts, it was a pleasure doing business with them.”
K‑3331 Splitter Valve Kit
▸ saoti28
“Good”
K‑3331 Splitter Valve Kit
▸ rita20‑80
“In good condition”
A‑5000 Slave Valve
▸ victorjesus66
“Gracias”
A‑4740 Air Filter Regulator
Feedback sourced from eBay marketplace
Request a Custom Quote
Fill out the form below and our team will contact you within 24 hours.
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.
Please order exclusively through our official online store. We do not accept WhatsApp or email orders.
We process and ship paid orders within 24 hours. Shipping cut-off times (US Central Time – CST): Monday to Friday at 2:30 PM; Saturday at 11:00 AM. Orders placed after these times will be dispatched on the next available business day. (Note: Our warehouse does not ship on Sundays.)
We strongly recommend shipping. Walk-in pickups are not supported; please order online for efficient dispatch.
Yes, tiered discounts apply automatically on our official website. (Note: This does not apply to eBay/Amazon orders).
