Snap-on – (Sunroof) Drain Cleaning Tool
Prevent rainwater from entering the customer’s car and save valuable workshop time with the Snap-on ADC2025 (sunroof) drain cleaning tool. This tool is the ultimate solution for quickly, thoroughly, and effectively cleaning and maintaining the drainage channels of sunroofs. This compact, all-in-one tool is specially designed to quickly and easily clear clogs and verify the proper functioning of the drainage system. You can easily clean and test (sunroof) drains and quickly clear clogs without having to remove interior panels or trim.
Why does a sunroof drain get clogged?
A sunroof has drainage channels that collect rainwater around the roof and direct it to the bottom of the car via hoses and drainage channels. Over time, debris accumulates in these gutters—such as leaves, fruit, dust, and dirt that blows in through the sunroof or panoramic roof. The debris settles in the drain hoses and forms a clog. The water can no longer drain away and flows into the interior through the open roof. The consequences include water damage to interior components, damage to the electronics, and costly repairs.
Cleaning a sunroof drain without disassembly
With the ADC2025, you can clean a sunroof drain without having to remove interior panels or trim. The compact, all-in-one design fits easily into a handy storage bag, so you can take it with you wherever you go. The stainless steel housing with an ergonomic handle is corrosion-resistant and comfortable to use.
The sturdy pressure hose (2.5 meters) is long enough to reach the drain channel along the B-pillar of the BMW X Series (starting in 2025). The one-way valve ensures controlled flow during cleaning. Use the rinse bottle (250 ml) to flush and test the drain.
This cleaning tool is also ideal for cleaning the windshield drain on delivery vans.
Cleaning windscreen drainage channels on vans and motorhomes
The Snap-on ADC2025 can also be used to clean and unblock the windscreen drainage channels and outlets, which are located on the left and right-hand sides of many vans, commercial vehicles and motorhomes.
These drainage channels often become blocked quickly by dirt, dust, leaves and other debris. Due to the angle of the windscreen and the vehicle’s design, blockages in the drains can prevent rainwater from draining away properly. As a result, excess water can enter the engine compartment and accumulate around, on and inside valuable mechanical and electronic components.
Over time, repeated exposure to water, moisture and contamination can contribute to corrosion, making the components difficult to remove during servicing or repairs. For this reason, regular cleaning and preventative maintenance of the windscreen drainage system on these vehicles are particularly important.
The ADC2025 offers mechanics a practical solution for accessing and clearing these hard-to-reach drainage areas before a blockage can lead to more serious and costly problems.
Particularly relevant applications include:
- Renault Master
- Opel Movano / Vivaro
- Nissan NV400 / Interstar
- Peugeot Boxer
- Citroën Jumper
- Iveco Daily
- Fiat Ducato
- and many other commercial vans and motorhomes with similar drainage systems
Benefits of preventive maintenance:
A quick and simple cleaning procedure helps to maintain good water drainage, reduce unwanted water build-up in the engine compartment and potentially prevent corrosion and seized injectors.
Snap-on ADC2025: a simple tool for preventative maintenance that can help avoid a very costly repair.

Technical specifications
- Housing: stainless steel
- Handle: ergonomic
- Pressure line: 2.5 meters, semi-flexible
- Rinsing bottle: 250 ml
- Valve: check valve
- Set contents: tool with handle and cleaning tube (ADC2025-3), 250-ml rinse bottle (ADC2025-2), storage bag (ADC2025-1)
Want to know more as a result of this article?
Get in touch