KZYEE — Built for Pros. Trusted by Truckers.
At KZYEE, we don’t just sell tools—we solve problems. Our diesel truck scanners are built with pro-level features, wide compatibility, and real-world durability.
Got questions? We’re here. Need help? We respond fast. From garage techs to long-haul drivers, KZYEE helps you stay on the road and in control.
The KZYEE Tools Difference
Power Circuit Probe Kit
【 Prevent Downtime – Keep Trucks Moving & Money Flowing 】 Every hour a diesel truck sits idle means lost loads, lost pay, and broken schedules. The KC601 heavy-duty truck scanner reads and clears fault codes, displays live data, and retrieves ECU information so you can detect issues before breakdowns happen. Designed for fleets and owner-operators who can’t afford delays, it helps avoid towing bills, keep customers satisfied, and keep profits rolling mile after mile.
【 Lifetime Free Updates – Buy Once, Earn for Years 】 Your diesel truck deserves lasting value. With lifetime free updates, this heavy-duty diagnostic tool grows with your fleet—no subscriptions, no hidden fees, no paywalls. Always ready for the latest trucks, engines, and protocols, it keeps your business compliant, reliable, and profitable without draining your wallet or slowing your haul.
【 Complete Coverage – Confidence Across Every System 】 From engines and transmissions to fuel and brake systems, this diesel truck diagnostic tool gives you total confidence that every mile earns. Replace multiple tools and endless guesswork with one dependable device built for heavy-duty professionals. Reduce surprise breakdowns, protect freight, and keep your fleet efficient wherever the road leads.
【 Faster Connections – Efficiency You Can Feel 】 Skip tangled cables and wasted minutes. Wireless 6-pin, 9-pin, and 16-pin diesel adapters deliver fast, stable, professional-grade connections for 12V and 24V trucks. Move from vehicle to vehicle smoothly, finish more jobs per day, and turn downtime into productivity—because every second saved means more trucks earning on the road.
【 Always Organized – Rugged Bag for Real-World Work 】 Real truck pros don’t waste time searching for tools. The included heavy-duty storage bag keeps every diesel adapter, cable, and connector safe, sorted, and ready. Whether in the workshop or roadside, you look professional and stay efficient. Save minutes on every job and turn that time into miles, deliveries, and steady income.
【 Broad Compatibility – Built for the Trucks You Drive 】 Covers most Class 4–8 diesel trucks powered by leading engines like Cummins, Detroit, Caterpillar, Volvo, and more. It’s the confidence of knowing one reliable tool fits your entire fleet. No subscriptions, no limits—just consistent coverage that keeps your diesel trucks compliant, connected, and ready for every route ahead. ⚠️ Coverage may vary by year or model—confirm before purchase.
【 Built Tough – The Diesel Tech’s Trusted Partner 】 This isn’t a delicate gadget—it’s a heavy-duty diagnostic tool engineered for the realities of diesel work. Trusted by fleet managers, mechanics, and drivers nationwide, it’s built to last through shop spills, roadside grit, and long hauls. When uptime is everything, this truck scanner keeps your operation earning and your business growing.
Thomas –
Great for the price — works well on my diesel trucks
I bought the KC601 to use on my fleet of older and newer diesel trucks, and it’s already paid for itself. Setup was simple — just plug and go. It read codes fast and gave live data without a bunch of unnecessary steps. The menu is easy to navigate, even if you’re not a full-time mechanic.It came well packaged, and the delivery was on time (actually arrived early). I’ve used it on both Freightliners and Internationals with no problem. Haven’t tried the update yet, but from what I’ve seen so far, it’s compatible with most of what I run.Definitely a solid scanner for the money. If you’re managing a small fleet or just tired of guessing what’s throwing your check engine light, I’d recommend grabbing one.
Ninemile –
Tedious update procedure
Did not work at all. Even after performing the update the scanner wouldn’t connect to any model of heavy duty diesel truck that I tried. I tried connecting to Ford, International, Peterbuilt and Mack but the scanner could not communicate. I have tried 3 different models of scanners from Amazon and none of them worked and definitely not worth buying.
Samuel M Wondu –
10/10
I am a professional. I use $10,000 plus advanced scanners. I wanted something simple and easy to carry around for initial diagnostics and gave this product a chance. I am beyond impressed. It worked very well on a large Freightliner 2006 truck. I have no doubt that it would work as good on other trucks. What is more impressive is that it gives a complete explanation of the DTC right there on the screen displayed at the same time with the diagnostic code. Buy it. Works well.
aidrei –
Good
Seller is very accommodating with my concern about how to used this product but unfortunately it doesn’t match with my semi truck.
MTBr –
Must have for anyone traveling in an OBD2 diesel
Works on Diesel trucks/equipment with J1708(older) and J1939(newer canbus style) trucks. Easy to use as any usual OBD2 scanner. Buttons allow easy navigating through the menu. I got this to keep with us while traveling in our diesel pusher RV. In the event something arises, I can diagnose the issue and track live data. Feels sturdy and not cheaply designed. Should survive some bumps or drops. Only reason for one ding is the price.
Les priestley –
Good for the price
Well made, works good,worth the money
Bill shouse –
Junk
Does not work
Lakina Pittman –
Great buy
Worked with my maxx force 2019 international
Pedroza lalo –
Muy buen producto, sencillo de operar
MFH Strange –
It’s great to use a high-end product, that works! Why “high-end? Because of the materials used and the excellent fit of pins and receivers.The “plastic” case is some kind of nylon-plastic mix, that results in a very tough exterior. Unlike plastics like “styrene” that also shatter if dropped from height onto a solid surface, this case almost feels like it bend. Well, it can’t, but it has a terrific feel to it.There are no sharp edges or nasty burrs anywhere to be found. You can safely grab one of these adapters out of dark tool drawer and not worry about puncturing your fingers.The fit both into the ODB port on a truck, and into your scanner is solid and firm. I was trying to find the right words for this contact – “tight” would mean it’s hard to either insert the adapter or to remove it, and that’s not the case. The fit is what you would expect from an OEM device, connecting to a port.The pins all lined up, too. Zero issues.Of course, these two adaptors can only help connecting your scanner to either 6 or 9 pin ports. It can’t do any more than the scanner you are using. To that end, if you are looking to purchase a scanner, I would suggest one that has a number of more advanced features, over a “bare-bones” unit. Yes, it will probably cost you more, but if you consider the money savings, that extra costs will pay you back in just a few scans.My dealer charges me $135.00 just for hooking up the scanner – nothing more. And – get this – they will not perform any kind of repair unless they hook up the scanner. With a good scanner, you will be able to figure out much of what is wrong with your heavy duty truck, as well as your little four banger, personal car!Bottom Line – An excellent, very well made, adapter that will expand the number of vehicles you will be able to diagnose, with your scanner.
Randy hiltz –
Reads and deletes codes.Works as it should.Good tool for the price
ScienceIsCool –
These adapters feel solid and well made, with a rugged design that seems capable of handling frequent use in a shop or on the road. The pins are well aligned and fit securely into the truck’s diagnostic ports. Both the 6-pin and 9-pin adapters work smoothly with the 16-pin OBD2 connectors, making it compatible with a variety of Freightliner, Kenworth and other diesel trucks.These adapters are an essential tool to have in your garage whether it is for commercial use or for maintaining your own fleet of trucks. I like that it works well with my OBD scanner so there was no need to upgrade to a more expensive system to cover all my trucks. They are also easily portable, so I can diagnose a truck on the side of the road without a large tow bill.
Danny –
Worked good to get active code and information from modules. It seems slow loading the information but other than that worked great.