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  • RoadRinse undercarriage washer
  • pp-roadrinse-undercarriage-washer-p2_v1
  • pp-roadrinse-undercarriage-washer-p5_g2
  • pp-roadrinse-undercarriage-washer-p7_b1_g2
  • pp-roadrinse-undercarriage-washer-p8_b2
  • pp-roadrinse-undercarriage-washer-p7_b3
  • pp-roadrinse-undercarriage-washer-p4_v1_r10202
  • regen-roadrinse-undercarriage-washer-O1CN01mfriBH1knw7dAlpnw_!!2215751524729-0-cib-regen
  • RoadRinse Gray wheels, bar + 2 wands
  • RoadRinse Gray small wheels, 3 wands + Karcher-style adapter
  • RoadRinse Large black wheels, bar + 3 wands + spray gun
 Rated 4.8 Excellent - Trusted By 17,000+

RoadRinse ™

$199.99
$199.99
SAVE Liquid error (snippets/price line 116): Computation results in '-Infinity'% Sold out
 

check_circle Rinse winter salt off then sweep the driveway

check_circle Clear packed salt and mud from underneath

check_circle Glide under the car without dragging

check_circle Switch from car to driveway by swapping wands

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  • Connect the bar or wand to your pressure washer's gun with the 1/4 in quick plug.
  • Click on the curved wand to reach under your car.
  • Set the wheels on the ground and guide the bar under the car in slow passes.
  • Switch to a straight wand to sweep your driveway or garage floor.

  • Three-piece kit: bar with two wheels, 1 straight wand, 1 curved wand
  • Karcher-style kit: bar with two wheels, 2 straight wands, 1 curved wand, adapter
  • Spray gun kit: spray gun, bar with two wheels, 2 straight wands, 1 curved wand

Once your item/s is dispatched,
the estimated delivery time is:

- USA: 2-9 business days
- UK: 5-13 business days
- Australia: 5-13 business days
- Canada: 2-12 business days
- Europe: 5-13 business days

You have 90 days to return your product for a full refund (return shipping is covered by the customer; defective items ship a free replacement).

✓ Official Authorized Retailer

This product is not available on Amazon or eBay. You are purchasing directly from the only authorized seller — which means full warranty, verified authenticity, and dedicated customer support. Beware of counterfeit listings on third-party marketplaces.

RoadRinse undercarriage washer

RoadRinse

 4.8/5
View full details

  • Over 17,000 recommend RoadRinse

Built to get under your car and clean it

water_drop

Spray a wide fan under the car

Water spreads across the underside as you pass. The bar carries 4 stainless steel fan nozzles, 40° or 60°.

swap_horiz

Switch jobs by switching wands

Aim the curved wand (labelled 45°) up under your car, or use a straight wand as a water broom on flat ground.

RoadRinse
tire_repair

Roll it into place under the car

Guide the bar along the ground instead of dragging it. Two wheels sit at the bar ends, in rubber-tire style.

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Plug in and get to work

Connect to your gun with the 1/4 in quick plug on the bar. Fittings and nozzles are brass and stainless steel.

Frequently Asked Questions

verified +347 experts reviewed it as the best choice in 2026
Q1 What pressure does my washer need?
The recommended washer pressure is 100-200 kgf/cm² (1,420-2,845 PSI, or 9.8-19.6 MPa). This is an attachment, so you bring your own pressure washer and hose.
Q2 Will it connect to my pressure washer?
The three-piece and Karcher-style kits have a 1/4 in quick plug on the bar. The Karcher-style kit adds an adapter with a 1/4 in quick-connect socket for Karcher-style machines.
Q3 How do I switch between car and driveway?
You swap wands. The curved wand cleans the underside of your car, and the straight wand sweeps flat ground like a water broom, so one kit does both jobs.
Q4 Does the curved wand help me reach under my car?
Yes, that is its job. The curved wand is labelled 45° and is made for aiming at the underside while the bar rolls along the ground on its two wheels.
Q5 Which kit suits me?
The three-piece kit gives you the bar, one straight and one curved wand. The Karcher-style kit adds an adapter for Karcher-style machines. The spray gun kit adds a high-pressure gun.
Q6 What size is the three-piece kit?
In the gray three-piece kit, the bar is 40.5 cm (16 in) long, the straight wand is 40.5 cm (16 in) and the curved wand is 40 cm (15.7 in). Measure the gap under your car against these.
Q7 Is it metal or plastic?
The material is brass and stainless steel, and the bar carries 4 stainless steel nozzles. The wheels are rubber-tire style with plastic hubs.
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