2021 Ram 3500 Gas Caps
Keep Your 2021 Ram 3500 in Top Shape with Quality Gas Caps
Whether you’re repairing or upgrading your Gas Cap, using high-quality parts is key to keeping your 2021 Ram 3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Gas Caps. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Gas Caps from Trusted Brands
Looking for a reliable Gas Cap? We’ve got you covered with options from brands you know and trust like Carquest Premium. For example, Carquest Premium Gas Caps start at just $14.29 with an average 4.4 star rating. With over 3,352 reviews and a solid 4 star average, you can shop with confidence knowing other Ram 3500 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 2021 Ram 3500 Gas Cap at Advance Auto Parts is around $20.84, with a range that starts at $12.99 and goes up to $28.99. With 10 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Non-Locking Tethered Fuel Tank Cap, Non-Locking Diesel Fuel Tank Cap, and Keyed Alike Locking Fuel Cap start at just $12.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Gas Cap, don’t forget to check out other key components like Fuel Pumps and Oxygen Sensors. At Advance Auto Parts, we’re here to help you keep your 2021 Ram 3500 in peak condition, inside and out.
Find Your Specific 2021 Ram 3500 Gas Caps
Looking for the perfect Gas Cap for your 2021 Ram 3500? You’re in the right place. Below, you’ll find links to various types of Gas Caps that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Gas Caps, ensuring durability and a precise fit for your Ram 3500. Whether you’re driving a 2021 model or another popular model year like
2012,
2013,
2014,
2015,
2016,
2017,
2018,
2019, and
2020, we’ve got you covered. Purchasing Gas Caps from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Gas Caps that fit your vehicle.
Essential 2021 Ram 3500 Gas Caps
Carquest Premium – Locking Fuel Tank Cap (Part No.10508)
from
$24.99
Product Features:
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- Independently tested for emission control
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Tank Cap (Part No.10512)
from
$24.99
Product Features:
See More
- Protects your fuel from theft and vandalism
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Fuel Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10838)
from
$17.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Manufactured from durable, long-life materials
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Product Features:
Carquest Premium – Non-Locking Diesel Fuel Tank Cap (Part No.10838D)
from
$12.99
Product Features:
See More
- Independently tested for emission control
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Dorman – Help – Fuel Filler Neck Cover (Part No.55298)
from
$28.99
Capless fuel and diesel exhaust fluid (DEF) tank filler systems allow the entry of moisture and dirt that can damage fuel and emission control systems. Eliminate that potentially expensive problem while adding some distinctive style to your Jeep Grand Cherokee or Dodge Ram with these DEF and fuel tank caps. CNC-machined from billet aluminum and fitted with quality O-rings, these caps seal filler necks to keep contaminants out. They feature an eye-catching, glossy anodized coating that resists staining.
Product Features:
See More
Product Features:
- Improved design – these anodized aluminum diesel exhaust fluid (DEF) and fuel caps fit capless filler necks to keep contaminants out and protect emission and fuel systems from moisture and contaminants
- Application specific – designed to securely seal the capless filler system necks on DEF and fuel tanks on certain Jeep Grand Cherokee and Dodge Ram diesel-equipped vehicles
- Durable materials – precision-machined from durable billet aluminum and anodized with a glossy finish for durability and distinctive style
- Trustworthy quality – vehicle try-on tested, and backed by a team of product experts in the United States and more than a century of automotive experience
Motorad – Locking Tethered Diesel Fuel Tank Cap (Part No.MGC537T)
from
$16.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Come pre-assembled for quick and easy installation.
- Several fastener options to work with any fuel cap compartment configuration
- Fits vehicles orginally equipped with tether
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Fuel Cap (Part No.10842)
from
$17.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Crown Auto Jeep Replacmnt – Non-Locking, Black, Plastic (Part No.52102464AA)
from
$16.99
Crown Automotive offers the largest line of replacement parts for Jeep (R), as well as a growing line of parts for Chrysler and Dodge vehicles. Our applications features Axle, Body, Brake, Clutch, Cooling, Electrical, Engine, Fuel, Lamps, Mirrors, Steering, Suspension, Transmission and Wiper.
Product Features:
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Product Features:
- Constructed Out Of Quality Materials And Serve As A Deterrent To Fuel Theft And Vandalism
- Gasoline Vapors Are Present Around Your Car At All Times And Result In A Fire Hazard
- Crown Automotive Fuel Caps Also Help To Reduce The Amount Of Emissions That Are Emitted Into The Earth Ozone Layer
- Crown Automotive Has Consistently Maintained Its Commitment To Offering Only Quality Parts
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17508)
from
$14.29
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Locking Diesel Fuel Tank Cap (Part No.10508D)
from
$23.99
Product Features:
See More
- Independently tested for emission control
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Motorad – Non-Locking Tethered Fuel Tank Cap (Part No.MGC837T)
from
$28.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Come pre-assembled for quick and easy installation.
- Several fastener options to work with any fuel cap compartment configuration
- Fits vehicles orginally equipped with tether
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17512)
from
$17.49
Product Features:
See More
- Passes all state and federal emissions tests
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Popular 2021 Ram 3500 Gas Caps Categories
Most Popular Gas Caps for 2021 Ram 3500s
Enhance your 2021 Ram 3500 with one of the 10 Gas Caps we have in stock, starting at just $12.99.
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17508)
from
$14.29
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Fuel Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10838)
from
$17.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Manufactured from durable, long-life materials
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Fuel Cap (Part No.10842)
from
$17.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Tank Cap (Part No.10508)
from
$24.99
Product Features:
See More
- Independently tested for emission control
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Tank Cap (Part No.10512)
from
$24.99
Product Features:
See More
- Protects your fuel from theft and vandalism
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Motorad – Non-Locking Tethered Fuel Tank Cap (Part No.MGC837T)
from
$28.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Come pre-assembled for quick and easy installation.
- Several fastener options to work with any fuel cap compartment configuration
- Fits vehicles orginally equipped with tether
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Non-Locking Diesel Fuel Tank Cap (Part No.10838D)
from
$12.99
Product Features:
See More
- Independently tested for emission control
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17512)
from
$17.49
Product Features:
See More
- Passes all state and federal emissions tests
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Dorman – Help – Fuel Filler Neck Cover (Part No.55298)
from
$28.99
Capless fuel and diesel exhaust fluid (DEF) tank filler systems allow the entry of moisture and dirt that can damage fuel and emission control systems. Eliminate that potentially expensive problem while adding some distinctive style to your Jeep Grand Cherokee or Dodge Ram with these DEF and fuel tank caps. CNC-machined from billet aluminum and fitted with quality O-rings, these caps seal filler necks to keep contaminants out. They feature an eye-catching, glossy anodized coating that resists staining.
Product Features:
See More
Product Features:
- Improved design – these anodized aluminum diesel exhaust fluid (DEF) and fuel caps fit capless filler necks to keep contaminants out and protect emission and fuel systems from moisture and contaminants
- Application specific – designed to securely seal the capless filler system necks on DEF and fuel tanks on certain Jeep Grand Cherokee and Dodge Ram diesel-equipped vehicles
- Durable materials – precision-machined from durable billet aluminum and anodized with a glossy finish for durability and distinctive style
- Trustworthy quality – vehicle try-on tested, and backed by a team of product experts in the United States and more than a century of automotive experience
Motorad – Locking Tethered Diesel Fuel Tank Cap (Part No.MGC537T)
from
$16.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Come pre-assembled for quick and easy installation.
- Several fastener options to work with any fuel cap compartment configuration
- Fits vehicles orginally equipped with tether
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Top-Rated Gas Cap Brands For Your 2021 Ram 3500
When it comes to finding the perfect Gas Cap for your 2021 Ram 3500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Gas Cap brands including Carquest Premium, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $14.29. Purchasing a Gas Cap from us here at Advance Auto Parts is a smart move for both you and your 2021 Ram 3500, providing peace of mind with parts that meet or exceed OEM standards.
Popular Carquest Premium 2021 Ram 3500 Gas Caps
If you’re looking for a top-quality Gas Cap for your 2021 Ram 3500, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Gas Caps. We have 3 Carquest Premium Gas Caps in stock for this fitment, all known for their durability and precision fit. With prices starting at just $14.29 and an average cost of $16.62, you’ll find the perfect Gas Cap for your needs and budget. Carquest Premium Gas Caps for the 2021 Ram 3500 come highly rated, with over 231 customer reviews and an impressive average rating of 4.4 stars. Choosing a Carquest Premium Gas Cap from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$14.29
(5)
Keyed Alike Locking Fuel Cap
“I was a bit worried about someone stealing gas from my car. No more!”
FAQs for 2021 Ram 3500 Gas Caps
What are the best-selling Gas Caps for 2021 Ram 3500s?
Out of 10 Gas Caps that fit 2021 Ram 3500s, the following parts are the top sellers:
- Non-Locking Tethered Fuel Tank Cap (12102515) – $28.99
- Non-Locking Diesel Fuel Tank Cap (10049430) – $12.99
- Keyed Alike Locking Fuel Cap (10069249) – $17.49
What’s the price range for 2021 Ram 3500 Gas Caps?
The prices of Gas Caps for the 2021 Ram 3500 range from $12.99 up to $28.99 for the most premium parts.
What is the average price of a Gas Cap for a 2021 Ram 3500?
The average price for Gas Caps for the 2021 Ram 3500 is $20.84. Keep in mind the variety of part types within our Gas Cap category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Gas Caps for other Ram 3500 model years?
What are the cheapest Gas Caps for my 2021 Ram 3500?
The cheapest 2021 Ram 3500 Gas Caps we carry are:
- Non-Locking Diesel Fuel Tank Cap (10049430) – $12.99
- Keyed Alike Locking Fuel Cap (10069228) – $14.29
- Locking Tethered Diesel Fuel Tank Cap (12102516) – $16.99
- Keyed Alike Locking Fuel Cap (10069249) – $17.49
- Fuel Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (18481529) – $17.79
Does Advance Auto Parts sell Gas Caps for any other 2021 Ram models?
Yes. We stock Gas Caps for 4 other popular 2021 Ram models. Some of the most popular are 2021 1500 Gas Caps, 2021 2500 Gas Caps, 2021 4500 Gas Caps, 2021 5500 Gas Caps, and 2021 ProMaster City Gas Caps.
What are the top-rated Gas Caps that fit the 2021 Ram 3500?
The one 2021 Ram 3500 Gas Cap we have in stock is the Non-Locking Diesel Fuel Tank Cap. It costs $12.99.
What types of Gas Caps do you sell for my 2021 Ram 3500?
We currently have just 1 Gas Cap in stock for a 2021 Ram 3500, and as of 11/2/25, it is a Gas Cap.
Can I get help with 2021 Ram 3500 Gas Cap orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Ram Gas Caps and more.
What is your return policy for Ram 3500 Gas Caps?
Advance Auto Parts keeps returns simple. For new Ram 3500 Gas Caps and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.