Kenworth T680

KenworthClass 8

Kenworth T680

Kenworth's aero flagship and fuel-economy leader.

Launched at the 2012 Mid-America Trucking Show (production from 2013) as Kenworth's third-generation aerodynamic conventional replacing the T660 and T700, the T680 emerged from a four-year, $400 million program to develop the 2.1-meter cab and PACCAR MX engine. The 2021 T680 Next Gen made it Kenworth's most aerodynamic truck ever and introduced a 15-inch digital instrument display that Kenworth billed as the largest standard factory screen in any North American truck.

Maker

PACCAR

Years

2012–present

Body

Sleeper

Rating

Up to 80,000 lb GCWR

Power

405–565 hp

Applications

Long-haul, Regional

Engines

PACCAR MX-13PACCAR MX-11Cummins X15

Trouble with your T680?

Describe the symptom and Mike — the free AI truck consultant — will help you figure out what's wrong, which part is involved, and whether it's safe to drive. Free, no account.

Common replacement parts

Real products from the PartsNow catalog. Confirm fitment with Mike before ordering.

3030HNTRX - 3030 SPEC LONG SHAFT HNTRX BRAKE CHAMBER

3030HNTRX

3030HNTRX - 3030 SPEC LONG SHAFT HNTRX BRAKE CHAMBER

OTR10143 - AUTO SLACK ADJUSTER, 11/2-10DRIVE 5.5,6.5

OTR10143

OTR10143 - AUTO SLACK ADJUSTER, 11/2-10DRIVE 5.5,6.5

5-808330 - BRAKE KIT FOR 4709DEN SHOES

5-808330

5-808330 - BRAKE KIT FOR 4709DEN SHOES

370036A - OIL BATH SEAL

370036A

370036A - OIL BATH SEAL

348-4195 - HUB CAP (SENTINAL LARGE DIAM)

348-4195

348-4195 - HUB CAP (SENTINAL LARGE DIAM)

5008414PGBXW - AIR DRYER CARTRIDGE, PURAGUARD

5008414PGBXW

5008414PGBXW - AIR DRYER CARTRIDGE, PURAGUARD

11444 - GLADHAND BRACKET MOUNT

11444

11444 - GLADHAND BRACKET MOUNT

15W40 OIL - 15W40 OIL (ROTELLA) GAL JUG

15W40 OIL

15W40 OIL - 15W40 OIL (ROTELLA) GAL JUG

Brakes & Wheel End Air System Filtration Electrical & Lighting Suspension & Steering Cooling System Drivetrain Body & Cab Exhaust

Find parts at PartsNow.ai Call or text (865) 290-5485

Compare the T680

T680 vs 579 T680 vs Cascadia T680 vs VNL W900 vs T680 Semi vs T680

Guides from the shop

Air Dryer Not Purging? Diagnose Wet Tanks Fast

Air dryer not purging? Diagnose wet tanks fast with checks for governor, purge valve, heater, and cartridge on trucks like Kenworth T800.

Suspension & Steering

Kingpin & Bushing Wear: Steer Axle Play Diagnosis Guide

Learn the dial indicator method to check kingpin and bushing wear on your steer axle before DOT pulls you out of service.

Electrical & Lighting

Trailer ABS Light Won't Go Off? Sensor & Wiring Guide

Trailer ABS light staying on? Step-by-step diagnosis for wheel speed sensors, harness corrosion, and ECU faults before you swap parts.

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The aero workhorse that bridged the T600 and the T680 era.

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The short-lived aero tractor that handed the torch to the T680.

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