Help prevent power steering fluid leaks and keep contaminants out of the steering system with the Dorman power steering reservoir cap, part number 99979CD, a direct replacement for a cracked, worn or missing original equipment cap. It fits many vehicles, among them the 2000-2013 Nissan Altima, 2000-2006 Nissan Sentra and 1998-2019 Nissan Frontier. See the "Vehicles it fits" section for the full list and engine details.
A power steering cap closes off the fluid reservoir. When the original cracks, wears out or goes missing, fluid can seep out and dirt or debris can get into the system. This Dorman power steering cap is designed to match the original cap's fit, function and appearance, so it takes the place of the damaged one.
- Direct replacement: Replaces a cracked, worn or missing original equipment cap.
- Durable construction: Made of quality materials, intended for leak-free performance and a long service life.
- Cost-effective solution: Offers original equipment quality at a competitive price.
- Quality tested: Put through try-on and material testing to help confirm a quality fit and reliable performance.
Signs the cap may need replacing include visible cracks, a worn cap, a missing cap, or fluid residue around the reservoir opening. If the cap is the source of the leak, this part replaces it. Other steering components can also leak, so find the source before replacing parts.
Interchange: NI1017077 · 49180JA000 · 491818B400 · SK99979
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
NI1017077, 49180JA000, 491818B400, SK99979
Frequently Asked Questions
What does a power steering reservoir cap do?
It closes the power steering fluid reservoir. This helps keep fluid in and dirt or debris out of the steering system.
Does the Dorman 99979CD fit the 2000-2013 Nissan Altima?
Yes. It is listed for the 2000-2013 Nissan Altima, along with the 2000-2006 Nissan Sentra and the 1998-2019 Nissan Frontier. Check the "Vehicles it fits" section for your exact vehicle.
What are signs my power steering cap may need replacing?
A cracked, worn or missing cap, or fluid residue around the reservoir opening, can mean it needs replacing. Find the leak source first, since other steering components can also leak.
How is this cap tested?
Dorman put this cap through try-on and material testing to help confirm a quality fit and reliable performance.
Is the replacement cap hard to install?
It is a direct replacement, so it goes on the reservoir opening in place of the old cap. Follow the vehicle service information for checking the fluid level.
