Recall on record for this model family
- NHTSA 21V080000 — ENGINE NHTSA recall: official notice
- NHTSA 24V145000 — SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK NHTSA recall: official notice
Verify the unit's serial number against the official notice before purchase.
Last verified against the primary source on Sep 11, 2026.
$59,950–$209,950 observed used across 6 comps, and price tracks mileage. High-mile (455k–655k) trucks land $89k–$175k, low-mile late units $175k–$230k. The W900 shell is sold across many engine specs, so buy on the specific engine (ISX15 / legacy C15) and driveline, not the badge.
Confidence 55%6 observed comparables
As of Sep 11, 2026What can make the cheap machine expensive?
| Component | Severity | Documented repair cost |
|---|---|---|
| EGR Cooler (Cummins ISX15) | high | not yet verified |
| Transmission synchros | medium | not yet verified |
ISX15 injectors fail by sticking open (white smoke, rough idle) or sticking closed (misfires, power loss); commonly spec'd engine in W900 conventional trucks.
Cost not yet verifiedEGR cooler cracks internally and mixes coolant with exhaust gas, producing white smoke and coolant loss with no visible external leak.
Cost not yet verifiedOlder W900s were commonly spec'd with Cat C15/C13 engines; HEUI injector sets are expensive to replace and vulnerable to contaminated fuel.
Cost not yet verifiedEaton Fuller manuals common in W900 spec sheets develop hard shifting and jump-out-of-gear faults at high mileage.
Cost not yet verifiedPACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
Common questions
How much does a used Kenworth W900 cost?
Observed listings range roughly $59,950 to $209,950 depending on age, condition, and configuration (as of 2026-09-11).
What fails on the Kenworth W900?
The most cited concerns in our evidence record: EGR Cooler (Cummins ISX15), Transmission synchros. See the risk breakdown above for details and sources.
Is the Kenworth W900 under recall?
A safety recall exists for this model family. Verify the unit's serial number against the official notice linked on this page before buying.
Live listings on eBay
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From the research record
- FAILURE (2026-09-05, agent-fetched, Claude spot-verified sample): Fuel Injectors (Cummins ISX15, common W900 spec): "ISX15 fuel injectors fail in two ways: they stick open (causing white smoke and rough idle) or stick closed (causing misfires and power loss)." https://skylinerrepaircenter.com/blog/cummins-isx15-engine-problems-a-mechanic-s-perspective
- FAILURE (2026-09-05, agent-fetched, Claude spot-verified sample): EGR Cooler (Cummins ISX15): "The cooler cracks internally, mixing coolant with exhaust gases. You'll see white smoke from the exhaust and coolant loss with no visible leaks." https://skylinerrepaircenter.com/blog/cummins-isx15-engine-problems-a-mechanic-s-perspective
- FAILURE (2026-09-05, agent-fetched, Claude spot-verified sample): Injectors (legacy Caterpillar C15, common older W900 spec): "Contaminated fuel destroys injectors - a set of eight injectors costs $4,000-$6,000." https://skylinerrepaircenter.com/blog/caterpillar-truck-engines-legacy-maintenance-guide
- FAILURE (2026-09-05, agent-fetched, Claude spot-verified sample): Transmission synchronizers/shift forks (Eaton Fuller manual, common W900 driveline): "Jumping out of gear occurs when shift forks bend or wear grooves. The transmission pops out of 9th or 10th gear under load." https://skylinerrepaircenter.com/blog/eaton-fuller-transmission-problems-and-solutions
- MARKET CONTEXT (2026-09-05, not published -- only 2 real base-W900 listings found, need 3+): $59,950 (2005, no mileage shown) and $102,972 (2020, 466,823 mi), both soarr.com. A 3rd listing exists but is a W900L (long-hood variant), 2025/79,500mi at $194,950 -- a near-new different SKU, excluded to avoid skewing the used-W900 range. Held pending 1 more base-W900 listing.
- PRICE (SECONDARY, soarr.com base-W900 only, re-verified by lead 2026-09-11; W900L and "6X4 T/A" tag variants excluded): 6 real comps — 2005 $59,950; 2019 $89,950 (655,048 mi); 2021 $88,900 (511,730 mi); 2020 $169,950 (456,411 mi); 2021 $174,950 (435,338 mi); 2023 $209,950 (144,529 mi). Price tracks mileage coherently. https://www.soarr.com/for-sale/trucks/0/Kenworth/W900/all-for-sale
- RECALL (21V080000, ENGINE): PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
- RECALL (24V145000, SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK): PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900...
Sources
- skylinerrepaircenter.com (failure evidence)repair-industry · verified · accessed 2026-09-05
- skylinerrepaircenter.com (failure evidence)repair-industry · verified · accessed 2026-09-05
- skylinerrepaircenter.com (failure evidence)repair-industry · verified · accessed 2026-09-05
- soarr.com W900 dealer inventory (auto-refresh watch: publishes when 3+ real used listings appear)dealer-inventory-aggregator · observed · accessed 2026-09-05
- NHTSA recall 21V080000 (ENGINE)nhtsa-recall · verified-primary · accessed 2026-09-11
- NHTSA recall 24V145000 (SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK)nhtsa-recall · verified-primary · accessed 2026-09-11
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