Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
10 Best fuel tank caps of 2025
Save up to 21% off
Best Choice1
Flow Security SystemsThe Flow Security Systems Vented Locking Fuel Tank Cap | Secures Transfer & Above Ground Commercial Fuel Tanks | Prevents Theft & Fuel Vandalism | FSS 377M | Male 2" Std Thead
9.9Exceptional
-
-
Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
Trusted insights AI and human analysis guide your decisions, reflecting real user prioritiesReal users impact
Thousands of users trust our site daily
- Based on millions of stores and reviews
- Shoppers influence our rankings
Analyzing top stores
Value for Money2
Flow Security SystemsThe Flow Security Systems VersaLock | Vented Locking Fuel Tank Cap | For Transfer & Above Ground Commercial Tanks | Prevents Theft & Secures Fuel Tanks | FSS 754 | Includes Adapter | 1CT
9.7Exceptional
-
3
JYINCPEDTransfer Tank Vented Fuel Diesel Tank Cap,Venting Pressure Fuel Gas Cap for 2 Inch Base,Diesel Transfer Fill Lid for Auxiliary/Storage Truck Tool Box-Only Include Fill Lid
9.6Exceptional
-
4
JYINCPEDTransfer Tank Vented Fuel Cap w/Threaded Neck,Diesel Tank Cap with 2 Inch Base,Fuel Venting Pressure Gas Fill Lid for Diesel Transfer/Auxiliary/Storage Truck Tool Box
9.5Excellent
-
5
ZEELINE BY MILTONZeeline By Milton ZE5001 2 Inch Flip Top Vented Locking Fill Cap
21% Off9.4Excellent
-
-
See Today’s Deals & Prices
6
JYINCPEDTransfer Tank Cap Vented Diesel Fuel Cap,Gas Venting Pressure Tank Lid for 2 Inch Base,Diesel Fuel Fill Lid for Auxiliary/Storage Truck Tool Box
9.2Excellent
-
7
JYINCPEDTransfer Tank Vented Fuel Cap w/ 2 Inch Threaded Neck,Fuel Transfer Diesel Tank Cap,Venting Pressure Gas Fill Lid for Diesel Auxiliary/Storage Truck Tool Box
9.1Excellent
-
8
JYINCPEDTransfer Tank Vented Diesel Fuel Cap w/ 2 Inch Threaded Neck,Diesel Fuel Transfer Tank Cap, Venting Pressure Gas Fill Lid for Auxiliary/Storage Truck Tool Box
9.0Excellent
-
9
RADHLBNIURADHLBNIU Gas Cap 77300-06040 - Fuel Tank Cap Replacement For Toyota Scion, 4Runner, Avalon, Camry, Corolla, Highlander, Matrix, RAV4, Tacoma - Lexus ES350, GS350, GS460, LX470, xA, More
8.7Very Good
-
10
HEMRUNKTransfer Tank Vented Cap with Iron Base Kit Diesel Fuel Tank Cap with 2" NPT Threaded Neck for Fuel Transfer tank Diesel Transfer Tank Vented Fuel Storage Tank Gold
8.6Very Good
-
