

🛠️ Keep your battery fresh, powerful, and corrosion-free — because your ride deserves the best!
The NOCO NCP2 MC303 Oil-Based Battery Terminal Protectors are premium anti-corrosion washers designed to prevent battery terminal corrosion indefinitely. Featuring a rugged oil-based formula that never dries or evaporates, these protectors fit both top-post and side-post batteries with a removable inner ring. Trusted by professionals since 1914 and made in the USA, they enhance electrical connections and improve battery performance, ensuring reliable starts and long-lasting battery health.






| ASIN | B001DKUTR0 |
| Best Sellers Rank | #59,731 in Automotive ( See Top 100 in Automotive ) #872 in Automotive Replacement Battery Accessories |
| Brand | NOCO |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,206) |
| Date First Available | September 27, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.4 ounces |
| Item model number | MC303S |
| Manufacturer | NOCO |
| Manufacturer Part Number | MC303S |
| Model | MC303S |
| Product Dimensions | 5.5 x 0.5 x 3.13 inches |
| Special Features | Does Not Dry or Evaporate, Made in the USA, Oil-Based Formula, Stops Battery Corrosion |
| Voltage | 12 Volts |
W**I
Noco quality.
Nice protectors and a nice upgrade I assume over the red/green kind. I trust the Noco name as I have many of their battery maintainers. Do they work? I don’t know. I know batteries that I have used these on when I went to change them I saw no corrosion at the posts and batteries without them usually had some acid seepage.
A**R
Effective car battery terminal protectors
NOCO battery terminal protectors are highly effective at preventing corrosion and ensure a clean and reliable electrical battery connection. These are easy to install, durable, simple to use and help avoid car battery maintenance headaches.
J**N
Fits. Hope its effective
They fit on my battery terminals easily snd supposedly will stop battery corrosion, but time will tell. Installation is very simple and the cost is reasonable.
G**.
Great quality and price
I always have these on hand when I install a battery. These have always worked great and last a long time to protect the terminals.
M**T
How to make your top post battery last
Remember when your batteries lasted, those fiber washers were the reason
C**N
was a deal, but not so much now
good product, does the job well. it was sold at a great price, but i think inflation has made this expensive.
M**W
They work...
Not a lot to review about these except to say that I've always used them and never have corrosion because I start with a good, clean install and use preventative measures like these and battery cleaner and protective paint (PlastiKote Battery Terminal Protector) when I have a new battery installed.
R**N
Best Anti Maintenance you can get for you car battery.
They work great. They do what there suppose to do, prevent acid build-up on you battery posts, and these are priced below what Walmart sells them for. The oil soaked in them makes a huge difference then those worthless dry ones at auto parts stores. Without these, you run the risk of developing what I call "snow" around your battery posts, and once it gets on the cables, your cables will start deteriorating.
B**3
Worked great, had pretty bad corrosion issues but was too cheap to replace the battery. These lasted over a year till I sold the car.
A**I
Original and Genuine
J**L
De muy, muy, muy fácil instalacion. Tiene un mes de uso y no hay rastro de corrosión.
S**N
Every battery should have these. No corrosion at terminals Your battery terminals stay like new
D**O
Genial
Trustpilot
3 weeks ago
1 day ago