Working on this vehicle? Write estimates, send inspections & invoice customers from your phone.

    Start 14-Day Free Trial
    ← All vehicle specs
    Wiper Blade Sizes

    2018 Kenworth T680 Wiper Blade Sizes

    Find the exact wiper blade sizes, attachment styles, and top aftermarket picks for your rig.

    AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.

    Working on this 2018 Kenworth T680? Run just this one job through Repairius.

    No big switch. Write the estimate, text it for approval, and get paid on your phone. Keep everything else the way it is.

    14-day free trial · credit card required · cancel anytime

    Maintaining clear visibility on the road is absolutely critical for heavy-duty truck drivers. If you are operating a 2018 Kenworth T680, ensuring your wiper blades are in top condition is a matter of safety, compliance, and driving comfort. Below, you will find all the details needed to select and install the correct wiper blades for your rig.

    Quick reference

    Here is the essential sizing and fitment information for the 2018 Kenworth T680. Note that this model does not come equipped with a rear wiper.

    PositionLength (in)Length (mm)AttachmentOEM PN
    Driver22"550 mmJ-hookCheck dealer
    Passenger22"550 mmJ-hookCheck dealer

    Note: Heavy-duty truck OEM part numbers can vary based on specific fleet configurations or cab options. Always verify with your Kenworth parts dealer if you require factory replacements.

    Best aftermarket replacements

    If you prefer to upgrade to premium aftermarket blades rather than sourcing standard factory parts, several top-tier brands offer heavy-duty solutions that withstand the rigors of over-the-road driving.

    • Bosch ICON: (Premium Price) Known for its dual rubber technology and specialized tension springs. These beam blades provide exceptional all-weather performance and a remarkably long lifespan.
    • Rain-X Latitude: (Premium Price) Features a water-repelling coating that is applied directly to your windshield as the blades wipe, actively clearing rain and road spray efficiently.
    • Trico Force: (Mid-to-High Price) Designed with a swept-wing spoiler to cut through heavy crosswinds. This is an excellent choice for a tall, aerodynamic truck like the T680.
    • Michelin Stealth: (Mid Price) A hybrid blade offering the aerodynamic design of a beam blade with the structural integrity of a traditional hinged frame.
    • PIAA Si-Tech: (Premium Price) Silicone-infused blades that leave a hydrophobic barrier on the glass. These are highly resistant to UV breakdown and extreme temperatures.

    Attachment style

    The 2018 Kenworth T680 utilizes the classic, heavy-duty J-hook attachment style. This is the industry standard for most commercial trucks, making it incredibly easy to find compatible replacement blades at almost any truck stop or auto parts retailer.

    How to install

    Swapping the wiper blades on your T680 is a quick maintenance task that requires no special tools.

    1. Lift the wiper arm: Pull the wiper arm away from the windshield until it locks into a standing position. (Be careful not to let the bare arm snap back against the glass).
    2. Release the old blade: Locate the small release tab or button where the blade meets the J-hook. Press it in and slide the blade down toward the base of the wiper arm to free it from the hook.
    3. Position the new blade: Align the new blade's adapter with the J-hook.
    4. Lock it in: Pull the blade upward tightly into the hook until you hear a distinct "click."
    5. Test: Gently lower the arm back onto the windshield. Turn on your ignition and run the wipers briefly to ensure they are seated correctly and clearing the glass properly.

    When to replace

    For over-the-road applications, wiper blades endure significantly more abuse than passenger vehicles. You should plan to replace your wiper blades every 6 to 12 months. However, you should swap them out sooner if you notice:

    • Streaking or smearing: The rubber edge is worn, nicked, or compromised by diesel exhaust fluid/road grime.
    • Chattering: The blades skip across the glass, indicating the rubber has hardened from UV exposure.
    • Squeaking: A sign that the rubber has lost its flexibility.

    Need wipers swapped fast? Find a shop on Repairius.

    Need service on your Kenworth T680?

    Request service from shops in your area.

    More specs for the 2018 Kenworth T680

    Oil Capacity & Filter

    Capacity, weight, filter PN, drain plug torque, change interval.

    Fluid Type Specs

    Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.

    Coolant Capacity & Type

    Total system capacity, OEM coolant spec, flush interval, bleed tips.

    Transmission Fluid & Service

    Trans model, fluid spec, capacity, filter PN, service interval.

    Torque Specifications

    Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.

    Brake Pad & Rotor Specs

    Pad PNs, rotor size, min thickness, caliper torque.

    Tire Size & Pressure

    OEM size, cold psi, bolt pattern, wheel size, TPMS.

    Battery Size & Group

    Group size, CCA, AGM/flooded, dimensions, reset note.

    A/C Refrigerant & Oil

    R-134a or R-1234yf, charge oz, PAG oil spec.

    Bulb Sizes (Headlight, Tail, Fog)

    Headlight, fog, tail, turn, reverse, interior.

    Factory Maintenance Schedule

    Service intervals by mileage, severe-duty notes, known issues.

    Towing Capacity & Payload

    Max tow, payload, GVWR/GCWR, hitch class by trim.

    Fuse Box Diagram & Amperage

    Fuse box locations, layout, amps, and what each fuse controls.

    Serpentine Belt Routing & Length

    Belt routing, length, rib count, OEM + aftermarket PNs.

    Wheel Alignment Specifications

    Camber, caster, toe ranges (front & rear), adjustability notes.

    Paint Color Codes

    All factory colors with paint codes, sticker location, touch-up tips.

    Spark Plug Type & Gap

    Plug PN, gap, torque, interval by engine.

    Transmission & Axle Gear Ratios

    Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.

    Key Fob Programming

    DIY programming steps, FCC ID, fob PN, battery, transponder.

    Same spec — other model years

    Maintenance & repair guides

    Browse by make

    Running an auto or diesel repair shop?

    Compare Repairius to the shop software you're paying for

    $99.99/month (first location included), unlimited users, 14-day free trial.

    Driving or Managing a Fleet?

    Use Dispatchtool for truck navigation, driver communication, dispatching, and fleet management.

    Visit Dispatchtool
    Run your shop from estimate to payment

    Don't overhaul your shop. Test Repairius on your next job.

    Repairius keeps estimates, work orders, real-time job assignment, customer and vehicle history, inventory, and payments in one place — on desktop and in your pocket.

    14-day free trial · credit card required · cancel anytime

    Not a mechanic? Send Repairius to your shop — they can run estimates, jobs, and invoices in one place.

    Know someone who needs this?

    Share this page with a mechanic, a shop owner, or a friend working on the same problem.

    Know a mechanic or shop owner Repairius could help?

    Send them Repairius in one tap. Free listing, online booking, reminders and the full shop workflow.

    Text them Email