Truck Undercarriage Wash Systems
Drive-over salt neutralization for commercial truck fleets — plow trucks, buses, fire apparatus, and refuse packers washed in under five minutes per vehicle.
Commercial truck fleets take the worst of winter: plow trucks spreading the salt, buses running salted routes twice a day, refuse packers out in every storm. Road salt creeps into frame rails, brake lines, and fuel lines where an exterior wash never reaches — and a drive-over undercarriage washer is how fleets fight back without adding labor. Drive over it, and the full chassis is washed and salt-neutralized in under five minutes — no operator underneath, no pit, no concrete work.
Built for Working Truck Fleets
One system, sized to the largest vehicle in the fleet — every fleet type below runs through the same lane.
Municipal & Plow Truck Fleets
Plow trucks, salt spreaders, and dump trucks take the worst salt exposure of any fleet. A drive-over pass at end of shift keeps them in service all winter.
Plow truck wash guideSchool Bus Fleets
Dozens of identical chassis running the same salted routes — one drive-over system protects the whole fleet in minutes per bus.
School bus wash guideFire Apparatus
Engines, tankers, and rescue vehicles have to be ready on call. Undercarriage neutralization keeps them corrosion-free without taking them out of service.
Fire apparatus wash guideRefuse & Service Fleets
Refuse packers, delivery trucks, and service vans run daily through brine and de-icing chemicals. Routine drive-over washing extends their service life by years.
Truck fleet wash guideWhy Fleets Go Drive-Over
Under 5 Minutes Per Vehicle
The driver never gets out and no one works beneath the vehicle — the wash fits into the end-of-shift routine instead of needing a dedicated wash crew.
Neutralizes, Not Just Rinses
One spray bar rinses; a second bar applies D-Salt neutralizing chemistry that reacts with chlorides hiding in seams and crevices. Rinsing alone leaves the chloride that keeps corroding after the vehicle dries.
No Pit, No Concrete Work
Drive-over pads sit in the existing wash lane and plumb to the pressure washer you already own — 4 GPM at 2,000 PSI minimum. No excavation, no rebuilt facility.
The system behind it is The Neutralizer™, Enzo's original drive-over unit — dual spray bars, 4-chemical selector manifold, and D-Salt neutralizing chemistry, running off the pressure washer you already own.
Truck Fleet Wash Questions
What size fleet justifies a drive-over undercarriage wash system?
There is no minimum fleet size — the system is sized to the largest vehicle in the fleet, so smaller vehicles pass through without adjustment. The math that justifies it is corrosion cost: a single fuel line or brake line repair runs $2,000+, and one avoided repair covers a large share of the system.
Can one system handle a mixed fleet — plow trucks, buses, and refuse packers?
Yes, as long as each vehicle fits the lane. The system handles plow trucks, salt spreaders, school buses, fire apparatus, refuse packers, tractors, and service vans — it is sized once to the largest vehicle, not per vehicle type.
How does a drive-over wash fit into a fleet's daily routine?
It takes under five minutes per vehicle. The driver rolls across at walking speed at end of shift without getting out, so there is no dedicated wash crew and no vehicle downtime beyond the pass itself.
Do we need to build a new wash bay for it?
No. The drive-over pads are positioned in the existing wash lane and plumbed to your current pressure washer — no excavation or concrete work. For fleets planning a full facility, it also integrates into Enzo's custom wash bay designs.
What does a truck undercarriage wash system cost?
It depends on lane configuration and chemistry setup, so we scope it during a free on-site assessment rather than publishing a number that turns out to be wrong. There is no fixed list price by design.
Scope an Undercarriage System for Your Fleet
Tell us your fleet mix and largest vehicle — we'll size the system and the chemistry during a free on-site assessment.
Free consultations:: https://enzoscleaning.com/services/free-consultations/
