RoadWorks – DEF Tank Grommet
DEF Tank Grommet
The RoadWorks DEF Tank Grommet (30850-GROM) is a premium black rubber seal designed to provide a secure, leak-resistant mounting point for your DEF (Diesel Exhaust Fluid) tank cap or cover. Built for heavy-duty truck use, this grommet helps maintain a proper seal and prolongs the life of your DEF tank assembly.
Product Features
- Manufacturer: RoadWorks
- SKU: 30850-GROM
- Material: Black rubber (flexible, weather-resistant) for durability under truck-use conditions
- Use: Replacement seal/grommet for DEF tank cap or cover mounting — often paired with RoadWorks cap SKU 30849
- Installation: Press into the tank opening or mount location; ensure proper seating of the cap-or-cover assembly after installation
Performance & Fit
This grommet provides a tight, reliable fit for your DEF tank cap or cover. The rubber material resists chemical exposure, weather, and vibration typical of heavy-duty applications. By maintaining a proper seal, it helps prevent leaks and contamination of the DEF system.
Installation
- Remove the existing cap or cover from the DEF tank.
- Inspect and clean the mounting surface and opening—remove any debris or old seal material.
- Press the RoadWorks grommet into the tank opening or cover mount until fully seated.
- Install or reinstall the cap/cover assembly and ensure proper closure and alignment.
- Check for proper seal and absence of leaks after installation.
Why You’ll Love It
- High-quality rubber construction designed for heavy truck use
- Simple, cost-effective upgrade or replacement for worn factory grommets
- Maintains proper DEF tank sealing and system integrity
- Compact, straightforward installation—minimal tools required
Common Questions
- Does this fit only specific truck models? The grommet is designed for DEF tank cap/cover applications and is compatible with many makes and models when paired with the correct cap or cover mounting location.
- Is this a full cap assembly? No — this is only the rubber grommet/seal. The cap or cover is sold separately (see RoadWorks cap SKU 30849).
- Will this rubber material resist DEF chemicals? Yes — the grommet is made from a rubber compound suitable for exposure to DEF fluids, weather, and road vibration.
⚠️ California Proposition 65 Warning:
This product can expose you to chemicals including nickel and chromium compounds, known to the State of California to cause cancer and reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Note: Before installation, verify the tank cap or cover mounting location and confirm that the grommet’s dimensions match your tank opening. Proper seating is essential for leak-free operation.