

🔐 Lock in savings, lock out worries — fuel security made sleek.
The 10591D Locking Fuel Gas Cap is a high-quality, heat-resistant ABS and rubber fuel cap designed for diesel trucks from Chevrolet, Dodge, Ford, GMC, and others. It features a secure locking mechanism that prevents fuel theft and vapor emissions, enhancing fuel efficiency and environmental protection. Easy to install without professional help, this modern, durable cap safeguards your fuel tank while optimizing vehicle performance.



| ASIN | B0BDRLRN67 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #49,022 in Automotive ( See Top 100 in Automotive ) #219 in Automotive Replacement Fuel Tank Caps |
| Brand | LANDSIN |
| Color | Green |
| Customer Reviews | 4.2 4.2 out of 5 stars (334) |
| Date First Available | September 9, 2022 |
| Exterior Finish | Chrome |
| Item Weight | 4.8 ounces |
| Item model number | Locking Fue |
| Manufacturer | LANDSIN |
| Manufacturer Part Number | Locking Fuel Gas Cap |
| Material | Acrylonitrile Butadiene Styrene (ABS), Rubber |
| Model | 10591D |
| OEM Part Number | 10591, 10591D, 31778D, 35039D, 40591, 40791, 9MGC791, MGC791 |
| Package Dimensions | 3.27 x 3.07 x 2.68 inches |
| Style | Modern |
| Vehicle Service Type | Truck |
A**E
Can sleep at night knowing I have this gas cap on my truck
Bought this because we have an older diesel truck that someone was able to siphon our gas from, keys work great, the cap fits great, easy to unlock and lock again, and our hard earned money for diesel will never be stolen again! Overall very easy to use.
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.
S**N
Great purchase
Works great fits well extra key
T**K
Very cheap quality.
Cheap . Plastic. Broke before even used 1x. I HOPE, nothing fell into my actual tank when the whole locking mechanism just broke trying to turn the key the first time to lock it…
A**R
My husband love it
This is ease to installation it is a good quality and engine light and what we love is the tether and the best is the lockability plus the value for money
C**M
Good product
Works as intended! Fits my f250. Secure locking mechanism.
B**A
Easy installation
Easy to install I like that I can lock it with keys works for my needs
G**O
Works well
Fits my GMC 2500HD perfectly. Easy to lock. Works as it should.
M**E
Works how it should, feels like it’s good quality. Lock works but will get water in it and freeze if you use it on top of a slip tank.
G**.
If I could give these a worse rating I would. These are garbage and that's right where they went. Both unlocked 1 time only and then the second time I attempted to unlock them they would not unlock. I had to break them both off with channel locks to remove them.
S**N
Gas cap fits well
R**R
It fits the truck
P**R
It’s not the highest quality product but appears to work. At this time I’ve only driven approximately 60 miles with the lock cap installed so my major concerns are if I should get any EVAP engine codes the first order of business would be to re-install the OEM fuel cap. The other concern is if the locking mechanism should fail and you are in a position where you cannot remove the cap which I guess that could happen as it could with the OEM cap as well. So, before I installed the locking cap I lubricated the lock mechanism liberally with graphite spray and cycled the lock numerous times. Should I have any issues I will update this review. Yes, I would recommend this product but just remember, “Locks only keep the Honest People Out…”
Trustpilot
1 month ago
3 weeks ago