100-Pack Common Rail Injector Dust Caps – M12, M14, M16 & M18 Oil Pipe Plugs

Keep your fuel system components clean and contaminant-free with this 100-piece assorted pack of plastic dust caps designed for common rail injector connector joints and oil tube pipe ends. Ideal for workshops, garages, and fleet maintenance operations, these plugs cover the most popular metric thread sizes — M12, M14, M16, and M18 — so you always have the right size on hand.

Key Features

100-Piece Assorted Pack: Generous quantity covering M12, M14, M16, and M18 sizes for maximum workshop versatility.
Durable Plastic Construction: Made from high-quality plastic that resists fuel residue, oil, and environmental debris to protect exposed ports during storage, transit, or repair work.
Random Assorted Colors: Supplied in a variety of colors, making it easy to visually differentiate between sizes during busy workshop sessions.
Snug Friction Fit: Designed to seat securely over common rail injector connector joints and oil tube pipe ends, preventing dirt, dust, and moisture ingress.
Wide Compatibility: Suitable for diesel common rail fuel systems found on cars, trucks, vans, and heavy machinery.
Workshop Staple: Perfect for technicians, mechanics, and DIY enthusiasts who need reliable protective plugs always in stock.

Specifications

Material	Plastic
Sizes Included	M12, M14, M16, M18
Color	Random assorted colors
Quantity	100 pieces per pack
Country of Origin	Made in China

Package Contents

100 × Assorted Common Rail Injector Dust Cap Plugs (M12, M14, M16, M18)

Important Notes

Product images are for illustration purposes only; actual size should be confirmed by the specifications above.
Please allow ±5–10 mm variance due to manual measurement.
Colors may vary slightly due to monitor settings, lighting, and screen calibration.

Related Products You May Like

For guidance on safe automotive fuel system maintenance practices, refer to the OSHA Automotive Service Safety guidelines.

Learn more: Aircraft fuel system

Frequently Asked Questions

Q: What thread sizes are included in this 100-pack of common rail injector dust caps?

A: This assorted pack includes dust caps in four common metric sizes: M12, M14, M16, and M18. The 100-piece quantity ensures you have an ample supply of each size for busy workshop environments.

Q: Are these dust caps suitable for diesel common rail fuel injector systems?

A: Yes. These plastic dust caps are specifically designed to fit common rail injector connector joints and oil tube pipe ends found in diesel fuel systems on passenger cars, trucks, and commercial vehicles.

Q: Can I choose specific colors for specific sizes?

A: Colors are supplied randomly across the pack and cannot be pre-selected. The assorted colors can, however, be used to your advantage to visually differentiate between sizes once sorted in your workshop.

Q: Are these caps reusable?

A: Yes. The durable plastic construction allows these caps to be removed and reused multiple times, making them a cost-effective protective solution for both short-term storage and longer-term component protection during repair work.