🔐 Lock in fuel security and eco-conscious power—because your truck deserves the best.
The 10591D Locking Fuel Gas Cap by LANDSIN is a high-quality, vehicle-specific fuel cap designed for diesel trucks including Chevrolet, Dodge, Ford, and GMC models. Made from durable ABS plastic and a tight rubber seal, it prevents fuel theft, reduces vapor emissions, and enhances fuel efficiency. Easy to install and built to withstand high temperatures, this locking cap combines security, environmental responsibility, and convenience in one sleek, modern design.
| Brand | LANDSIN |
| Color | Green |
| Material | Rubber, Acrylonitrile Butadiene Styrene (ABS) |
| Exterior Finish | Chrome |
| Vehicle Service Type | Truck |
| Style | Modern |
| Item Weight | 0.14 Kilograms |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Part Number | 10591, 10591D, 31778D, 35039D, 40591, 40791, 9MGC791, MGC791 |
| Manufacturer | LANDSIN |
| Model | 10591D |
| Item Weight | 4.8 ounces |
| Package Dimensions | 3.27 x 3.07 x 2.68 inches |
| Item model number | Locking Fue |
| Manufacturer Part Number | Locking Fuel Gas Cap |
B**E
Worth the money
Just installed and it works as designed. I will update my review if any issues arise. Diesel fuel systems and a full tank of diesel is expensive, this small piece of security is not.
M**G
Works great
I have a 2004 dodge ram 3500 and it’s fits perfectly. Call me paranoid but in this day and age I don’t like the idea of having a fuel cap that anyone can open and throw something bad into my fuel tank that will ruin my engine. This gave me peace of mind. Works great unless you have the mind of a goldfish.
J**
Great
Great
K**E
Doesn’t fit RAM 3500
Seller should indicate that this really doesn’t fix a RAM 3500 as it says it does. There are no threads to screw the cap in. Sent it back.
J**T
23' F350 PERFECT FIT & FUNCTION
Description accurate & fast shipping💯👊🏽
V**.
Turn til it clicks on the truck then it frees up and spins.
Works Great. Actually a bit more quality for the price I thought I was going to get. Once in the locked position, put it on the car or truck. Tighten it til it clicks. At that point it frees up in reverse and will just spin and not unscrew.
K**R
Diesel fuel cap
This diesel cap works perfectly, needed to keep honest people honest.
C**M
Good product
Works as intended! Fits my f250. Secure locking mechanism.
Trustpilot
3 days ago
3 weeks ago
