RIDGE WASHER Power Washer Undercarriage Cleaner 16" with Chemical Injector Bottle — 1,000–4,000 PSI, Rotating Nozzles

The RIDGE WASHER Power Washer Undercarriage Cleaner is a 16-inch pressure-wash attachment with a durable chemical injector bottle and multiple wands to clean vehicle undersides without crawling underneath.

This undercarriage washer kit gives you a safer, faster way to remove road grime, mud, oil residue and salt from cars, trucks, SUVs and trailers. It connects to most gas or electric pressure washers that deliver between 1,000 and 4,000 PSI and includes straight and curved extension wands so you can reach hard-to-access areas. The kit’s reinforced chemical bottle lets you apply detergent when needed and detaches easily for plain-water rinsing.

How does this attachment make underbody cleaning easier?

The wide 16-inch spray bar covers more surface area than a standard nozzle so you wash the undercarriage in fewer passes. Rotating jets blast away buildup while the included extensions let you tailor reach and angle without lying under the vehicle.

• 16-inch spray bar minimizes number of passes
• Rotating nozzles loosen stubborn grime and salt
• Straight and curved wands provide precise access to seams and frame rails
• Connects directly to standard pressure washer lance

When should I use the chemical injector bottle versus water-only?

Use the chemical injector when you need detergent to break down oil, grease or road salt. For quick rinses, remove the bottle so clean water flows freely and rinses away loosened debris faster.

• Attach bottle for degreasing and deep cleaning
• Remove bottle for fast, high-volume rinsing
• Bottle made from wear-resistant material to resist drops and cracks
• Simple install and remove process to switch modes quickly

What pressure and equipment is required to use this undercarriage washer?

The RIDGE WASHER undercarriage cleaner operates across a wide range but performs best at higher pressures. Make sure your pressure washer produces at least 1,000 PSI; ideal results are typically seen at 2,500 PSI or above. Avoid use outside the 1,000–4,000 PSI range to prevent poor cleaning or damage.

• Working pressure: 1,000–4,000 PSI (optimal ≧ 2,500 PSI)
• Compatible with most gas or electric pressure washers that accept standard lances
• Includes black nozzle to control spray pattern
• Use appropriate safety gear and follow pressure washer manufacturer recommendations

What exactly comes in the package and how does that help real-world use?

The kit supplies everything needed to begin undercarriage cleaning right away and increases durability and ease of use compared with basic nozzles. Larger component sizes mean broader coverage and fewer attachments to swap during a job.

• 1 × 16-inch undercarriage washer spray bar for wide coverage
• 2 × 15.7-inch straight extension wands for length and reach
• 1 × 15.7-inch curved wand to angle jets into recesses
• 1 × sturdy chemical bottle for detergent application
• 1 × black nozzle and 1 × wash mitt included for finishing touches

Who is this for? This RIDGE WASHER kit is aimed at vehicle owners, independent detailers and fleet maintenance teams who need a safer, quicker method to keep undercarriages free of corrosive road salts, grease and grime. It’s suitable for hobbyists who clean regularly and professionals who want a robust, easy-to-use attachment that pairs with a wide range of pressure washers. Always verify your pressure washer’s PSI compatibility before use and follow safety practices when working around vehicles.