Why the T680 needs its fairings intact
The T680 was built around aerodynamics. Kenworth spent serious wind-tunnel time shaping that cab, and the side fairings are a big part of the result. They guide airflow along the tractor and smooth out the gap between the cab and the trailer. When that surface is unbroken, drag drops and fuel economy goes up. When a section is gone, the air tumbles into the open space, and you pay for it every mile.
Here's what a damaged or missing extension typically costs a driver:
- Higher fuel burn, since turbulence behind the cab forces the engine to work harder at highway speed
- More road spray hitting the trailer, the fuel tanks, and anyone driving next to you
- A truck that looks neglected, which matters if you haul for customers who inspect equipment
- Possible inspection headaches, because loose or dangling body panels get noticed at the scale
Fairing extensions are at high risk of damage. They are positioned low on the sides of the tractor unit - precisely where they are vulnerable to curbs, loading dock bumpers, sharp turns, and road debris, especially during the winter months. A minor scrape on a delivery ramp can leave a crack that spreads with every vibration until a chunk breaks off somewhere on I-5. That's why we stock Kenworth t680 side fairing extensions as individual driver-side and passenger-side pieces. You replace only what's broken. Nobody wants to buy a full set when one side is perfectly fine.
What you get when you order from us
We sell aftermarket truck parts. That's what we do, and we're upfront about it. Our Kenworth t680 aftermarket fairing extensions are made to match the dimensions and contour of the factory panel so they line up with the existing fairing and follow the same body line. The material is impact-resistant and holds its shape in summer heat and Pacific Northwest rain alike. Each unit is model-specific, so you're not trying to make a generic panel fit a truck it was never shaped for.
A few things that come standard with every order:
- Same-day processing, with most orders shipped within 24 hours on business days
- Delivery anywhere in the United States
- Secure, SSL-encrypted checkout
- A real person at the other end of the phone, Monday through Friday, 8 a.m. to 5 p.m. Pacific
We also take pride in keeping things honest. We don't do repairs and we don't run a shop, so we won't pretend to tell you how to mount the part or what torque spec to use. We will tell you exactly which part (and for which side) is being shipped to you, which truck it is intended for, and when it will leave our warehouse. If anything seems suspicious when you receive the package, please give us a call. Our specialists have extensive experience with truck parts and can immediately spot if a part is incorrect.
Why go aftermarket at all? Mostly because the math works. A dealer panel for a late-model tractor can run several times what we charge, and the wait for it to arrive at a parts counter isn't always short. Our version does the same job, moves the same air, and gets to your door in days rather than weeks. Plenty of the drivers we talk to have been running aftermarket body panels for years without a second thought, and the ones who switch over rarely go back. The money saved on one side panel pays for a set of wiper blades, a hub cap, and a full tank of diesel with change left over.
We also carry the rest of what the T680 tends to chew through. Mud flaps, fender pieces, wheel covers, license plate holders, snow chains for the mountain passes, and diesel air heaters for the nights when the bunk gets cold. If the fairing extension is the reason you found us, take a minute and look around. Chances are there's something else on the truck you've been meaning to replace.
Fleet buyers, a quick word. We know you're tracking cost per mile down to the penny, and a Kenworth t680 fairing extension replacement is one of the cheaper line items you'll see this quarter. Buying a few spares for the yard means a truck with a scraped side isn't sitting while someone hunts down a panel. We'll work with you on multi-unit orders, and if you'd rather email a list than click through a cart, that's fine with us too.
Here is another point for owner-operators who have been putting this off. The absence of an aerodynamic fairing might not seem like a critical issue - after all, the truck still runs - so it is easy to dismiss. However, fuel costs are second only to the truck payments themselves, and aerodynamics is an area where improvements can be made for the price of just a couple of fill-ups. Install the panel, and the savings will begin on your very next trip.
