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💙 Stay slick, stay unstoppable — marine-grade grease that never quits!
Sta-Lube SL3121 is a premium 14 oz. aluminum complex marine grease engineered with a polymer-enhanced formula for superior water resistance and adhesion. Rated for extreme temperatures up to 469°F, it protects wheel bearings and marine equipment from water washout and corrosion, making it the go-to choice for professionals and enthusiasts tackling the toughest wet conditions.







| ASIN | B000CPJMY8 |
| Best Sellers Rank | #40,045 in Automotive ( See Top 100 in Automotive ) #11 in Heavy Duty Vehicle Greases & Lubricants |
| Brand | Sta-Lube |
| Brand Name | Sta-Lube |
| Container Type | Can |
| Customer Reviews | 4.7 out of 5 stars 915 Reviews |
| Global Trade Identification Number | 30072213312103 |
| Included Components | Grease |
| Item Form | Paste |
| Item Type Name | Marine Boat Trailer And 4 X 4 Wheel Bearing Grease |
| Liquid Volume | 14 Fluid Ounces |
| Manufacturer | Sta-Lube |
| Material | Aluminum |
| Model Number | SL3121 |
| Number of Items | 1 |
| Package Information | Can |
| Part Number | SL3121 |
| Recommended Uses For Product | Water |
| Specific Uses For Product | Marine, Freshwater, Saltwater, 4WD, Boat Trailers |
| UPC | 072213312102 |
| Unit Count | 14.0 Ounce |
| Upper Temperature Rating | 469 Degrees Fahrenheit |
| Viscosity | 21 sq-mm/s |
| Warranty Description | Manufacturer Warranty |
J**O
Reliable choice
I recently used the Sta-Lube SL3121 Water-Resistant Marine Grease to repack the wheel bearings on my boat trailer, and overall, I’m quite satisfied. The grease has a thick, tacky consistency and is notably water-resistant, which is crucial for marine applications. After several trips, the bearings continue to perform smoothly without any signs of water intrusion. However, I noticed that the grease is a bit more challenging to clean off compared to others I’ve used, likely due to its water-resistant properties. Despite this minor inconvenience, I believe it’s a reliable choice for protecting trailer bearings in wet conditions.
D**N
Good product at reasonable price
I got this to lube bearings on a mini bike. It seems to work great. I can also use it on anything that needs grease that might get wet.
S**7
Great for Vintage Bicycles
I use this for greasing all the bearings (bottom bracket, hubs, headset, pedals etc.) of my vintage touring bicycles. It works very well for this purpose, as the grease seems to resist moisture exposure (rain storms, puddles) better than traditional wheel bearing grease does. The consistency of this grease is slightly different (thicker) than traditional bearing grease. I've noticed no difference in rolling resistance compared to using regular grease. Good stuff!
T**N
Good.
Good product.
V**C
Container was less than half full
Product was less than half full. It was barely enough to service 2 axles. I would not buy again.
J**E
Good
Good
A**R
Great price / good quality
I used it on my outboard steering, worked nicely.
B**4
Great
Great
E**Z
Engrase e impermeabilización
Utilizado en el engrase exigente de bicicleta de montaña
M**.
Excelente
Excelente
M**Z
De buena calidad
Es tal cual como se muestra en las imágenes
H**O
Muito boa
Realmente funciona para as aplicações indicadas
E**N
Excelente
Excelwnte
Trustpilot
2 weeks ago
4 days ago