NIULPFZTK GS3L-42-250B Gas Cap | Mazda 3/6/CX-7/CX-9 Replacement

Direct replacement for Mazda models

The NIULPFZTK GS3L-42-250B gas cap is designed as a precise, direct replacement for the GS3L 42 250B family. Crafted to provide a dependable seal, it helps keep the fuel system closed and protect the area around the fuel filler from the elements. The housing is built with reinforced ABS plastic and pairs with a high-quality sealing rubber, engineered to handle temperature swings, rain, and road wear while maintaining consistent performance across daily driving.

Compatibility snapshot

• Mazda 3 (2010–2013)
• Mazda 6 (2009–2013)
• M Mazda CX-7 (2010–2012)
• Mazda CX-9 (2007–2015)

What you gain

• Tight seal and secure closure to help minimize fuel evaporation and rain intrusion
• Durable ABS plastic body with a robust sealing element for varied climates
• Resistance to cold and heat, designed for long service life
• Direct replacement that matches OE specifications for straightforward installation

In daily use

• The cap’s reliable seal supports a calmer vehicle interior and reduced exterior odors
• Maintains tank integrity and helps keep the filler area clean from debris
• Easy to install with a familiar click when properly tightened

Installation tips and fitment notes

• Brand new part ready to install; confirm fitment by comparing OE numbers and model year
• Open the old cap, remove it, then place the new cap and turn until you hear a click
• Verify the cover sits flush and the seal remains intact after installation

For best results, verify the vehicle year/model in the compatibility table and confirm the OE part number matches GS3L-42-250B before purchase. This approach helps ensure a seamless replacement experience and peak compatibility with your Mazda model.