Best Oil Filler Caps of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 14, 2025

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Oil filler caps are essential components of any engine system. They serve as a seal that prevents oil from leaking out of the engine while also keeping contaminants from entering the engine. These caps are typically made from high-quality materials such as aluminum or plastic, and they come in various sizes and designs to fit a wide range of engine types. Some oil filler caps are equipped with a built-in dipstick for easy oil level checking, while others have a vent to release pressure from the engine. Overall, oil filler caps are a small but critical part of any engine system that ensures proper lubrication and longevity of the engine.

At a Glance: Our Top Picks

ACDelco GM FC219 Oil Filler Cap Cover #TOP 1
ACDelco GM FC219 Oil Filler Cap
ftb score rating icon 9.8
ACDelco FC208 Engine Oil Filler Cap Cover #TOP 2
ACDelco FC208 Engine Oil Filler Cap
ftb score rating icon 9.7
Ford Genuine Oil Cap Cover #TOP 3
Ford Genuine Oil Cap
ftb score rating icon 9.5

Top 10 Oil Filler Caps

#TOP 1

ACDelco GM FC219 Oil Filler Cap

FC219
Black
ACDelco GM FC219 Oil Filler Cap Cover
ACDelco GM Original Equipment FC219 Engine Oil Filler Cap , Black

ACDelco GM Original Equipment FC219 Engine Oil Filler Cap is a high-quality product designed for professionals, equipped with state-of-the-art technology to meet the demands of modern users. The leading manufacturer is internationally renowned for its diverse range of award-winning products. This oil filler cap falls under the category of Oil Filler Caps.

What We Like
Perfect fit for multiple models
Reduces oil consumption significantly
Pressure relief feature is effective
Easy installation process
Provides extra protection against engine issues
What We Don't Like
Amazon fit confirmation may be inaccurate
Some users experienced limited benefit
#TOP 2

ACDelco FC208 Engine Oil Filler Cap

FC208
Black
ACDelco FC208 Engine Oil Filler Cap Cover
ACDelco GM Original Equipment FC208 Engine Oil Filler Cap , Black

ACDelco GM Original Equipment FC208 Engine Oil Filler Cap is a high-quality product designed for professionals. It is equipped with state-of-the-art technology and modernized to meet the demands of the modern user. A leading manufacturer, ACDelco is internationally renowned for its diverse range of award-winning products. This oil filler cap falls under the category of Oil Filler Caps.

What We Like
Fast delivery
Perfect fit
Better quality than local stores
High-quality material
What We Don't Like
Did not fit all models
Somewhat small size
#TOP 3

Ford Genuine Oil Cap

Ford
F3AZ-6766-B
Black
Ford Genuine Oil Cap Cover
Ford Genuine F3AZ-6766-B Oil Cap

This oil cap is a genuine OEM part that provides a direct fit, making it easy to install. The package dimensions are 6.2 L x 13.9 H x 10 W (centimeters), and the package weight is 0.071 kilograms. It has a universal fit, so it can be used with a wide range of vehicles. The product is categorized as an oil filler cap and ensures that your engine is protected from dirt and debris.

What We Like
Perfect fit for multiple models
Original Ford Motorcraft part
Easy installation
Durable replacement for deteriorated caps
Identical to the original
What We Don't Like
Gasket feels slightly weak
Could be one-piece design
#TOP 4

ACDelco GM Engine Oil Filler Cap

FC252
Black
ACDelco GM Engine Oil Filler Cap Cover
ACDelco GM Original Equipment FC252 Engine Oil Filler Cap with Seal, Black

The ACDelco GM Original Equipment FC252 Engine Oil Filler Cap with Seal is designed to seal and prevent oil leaks in your engine oil filler opening. It is a GM-recommended replacement part that offers quality, reliability, and durability comparable to the original factory component. This cap is manufactured to GM OE specification for fit, form, and function, ensuring easy installation and optimal performance.

What We Like
Fast shipping
Correct fit
OEM quality
Affordable price
Easy installation
What We Don't Like
Minor loss of original cap
#TOP 5

Dorman Engine Oil Filler Cap for Lexus/Scion/Toyota

84111
black
Dorman Engine Oil Filler Cap for Lexus/Scion/Toyota Cover
Dorman 84111 Engine Oil Filler Cap Compatible with Select Lexus/Scion/Toyota Models

The Dorman Engine Oil Filler Cap is a direct replacement for the original cap on specified Lexus, Scion, and Toyota models. It is designed to restore functionality and durability to your engine oil filter system. The cap is made from quality materials to ensure long service life and is backed by a team of product experts. To ensure the perfect fit, input your vehicle's make, model, and trim level into the garage tool.

What We Like
Perfect fit for my vehicle
Cost-effective compared to OEM
Quick delivery
Quality replacement from Dorman
No modifications needed
#TOP 6

ACDelco GM FC256 Engine Oil Filler Cap

FC256
Black
ACDelco GM FC256 Engine Oil Filler Cap Cover
ACDelco GM Original Equipment FC256 Engine Oil Filler Cap

The ACDelco GM FC256 Engine Oil Filler Cap is a GM-recommended replacement part for your GM vehicle's original factory component. It seals and helps keep oil from leaking out of your engine oil filler opening. The cap is manufactured to GM OE specification for fit, form, and function, offering quality, reliability, and durability.

What We Like
Effective oil leak prevention
Easy installation process
High quality and durable
Good value for the money
Updated factory part
What We Don't Like
No instructions included
Confusing at first glance
#TOP 7

Gates Engine Oil Breather Cap

31061
Multi
Gates Engine Oil Breather Cap Cover
Gates 31061 Engine Oil Breather Cap

The Gates Engine Oil Breather Cap is a universal design that provides maximum coverage with minimum inventory. Its sealed construction prevents engine crankcase gases from escaping into the atmosphere, while its heavy-gauge steel construction resists underhood heat and corrosion. To ensure proper operation of PCV systems, it is recommended to clean or replace the cap every 12,000 miles.

What We Like
Fits various vehicle models
Metal construction, not plastic
Cost-effective alternative
Easy to install
What We Don't Like
Rough chrome finish
#TOP 8

Stant 10111 Oil Filler Cap

10111
black
Medium
Stant 10111 Oil Filler Cap Cover
Stant 10111 Oil Filler Cap, black, Medium

Stant 10111 Oil Filler Cap is a heavy-duty and premium quality replacement for the factory filler cap. It is designed to function as the OE cap and fit vehicle-specific needs. The cap is made from high-quality materials, ensuring durability and longevity. It is suitable for both the original equipment market and the automotive aftermarket.

What We Like
Perfect fit for vehicles
Leak-free performance
Excellent value for price
Quality design and materials
Includes rubber O-ring
What We Don't Like
Design not as solid as expected
#TOP 9

Ford EC-743 Oil Filler Cap

Ford
EC-743
Black
Ford EC-743 Oil Filler Cap Cover
Ford EC-743 - Cap ASY - Oil Filler

The Ford Oil Filler Cap is designed to ensure your vehicle performs at its best. By choosing this genuine OEM part, you can expect quality, reliability, and durability. This means you can trust the cap to effectively seal your engine oil, preventing leaks and maintaining optimal oil levels. It’s essential to check the compatibility of this part with your specific vehicle model, including the engine and drivetrain, to ensure a perfect fit. Investing in this oil filler cap ultimately helps prolong the life of your vehicle and enhances its overall performance.

What We Like
Quick delivery
Direct OEM style replacement
Perfect fit
Works like original
Genuine Ford product
#TOP 10

AUPARTIK Oil Filler Cap for Jeep and Dodge

AT000051
AUPARTIK Oil Filler Cap for Jeep and Dodge Cover
AUPARTIK Engine Oil Filler Cap for 1996-2006 Jeep Wrangler cherokee Grand Cherokee for Dodge Ram 1500 2500 3500 Caravan Durango Intrepid Neon Stratus for Chrysler Concorde, More. 53010654AA 04648831AA

The AUPARTIK Oil Cap is designed to fit a wide range of Jeep, Dodge, and Chrysler vehicles, making it a versatile choice for many drivers. It replaces part numbers 53010654AA and 04648831AA, ensuring compatibility with models like the Jeep Cherokee and Dodge Ram. This cap is crafted from high-quality materials, providing excellent sealing performance to prevent leaks and maintain engine efficiency. With its long service life, you can rely on this product to keep your engine running smoothly. If you have damaged parts, this cap can be easily replaced, providing you with a hassle-free solution.

What We Like
Perfect replacement for old cap
Identical to original part
Fits 2001 Dodge Magnum V6
Quality construction
What We Don't Like
Not compatible with all engine types
Buying Guide Image

Finding the Best Oil Filler Caps to Meet Your Car's Needs

Introduction

Choosing the right oil filler cap for your vehicle is an important task that often goes overlooked. The oil filler cap is a crucial component in ensuring the proper functioning of your vehicle's engine, and selecting the right one can make a big difference in the performance and longevity of your vehicle. In this article, we will explore some key factors to consider when choosing an oil filler cap and provide some useful tips to help you make an informed decision.

Types of oil filler caps

One of the first things to consider when choosing an oil filler cap is the type of cap that is best suited for your vehicle. There are two main types of oil filler caps: screw-on caps and bayonet-style caps.

Screw-on caps are the most common type of oil filler cap and are typically used on older vehicles. These caps feature a threaded design that allows them to be easily screwed on and off by hand.

Bayonet-style caps, on the other hand, are more commonly found on newer vehicles. These caps feature a protruding tab or handle that is used to twist and lock the cap in place.

Compatibility

Another important factor to consider when choosing an oil filler cap is compatibility. It is important to select a cap that is specifically designed for your make and model of vehicle. This will ensure that the cap fits properly and seals securely, preventing oil from leaking out and contaminating your engine.

To determine the right type of oil filler cap for your vehicle, consult your owner's manual or the manufacturer's website. These resources will provide information about the type of cap that is recommended for your vehicle, as well as the proper installation procedures.

Material

Another key factor to consider when choosing an oil filler cap is the material that it is made of. Oil filler caps are typically made of either plastic or metal.

Plastic oil filler caps are the most common type and are typically used on older vehicles. These caps are lightweight and inexpensive, making them a popular choice for many drivers. However, plastic oil filler caps are not as durable as metal caps and may not provide as secure a seal.

Metal oil filler caps, on the other hand, are more durable and provide a more secure seal. These caps are typically made of steel or aluminum and are commonly used on newer vehicles. Metal oil filler caps are more expensive than plastic caps, but they are more resistant to wear and tear and may provide better protection for your engine.

Performance and durability

When choosing an oil filler cap, it is also important to consider the performance and durability of the cap. Selecting a cap that is designed for high-performance engines or that is built to withstand extreme conditions can provide added protection and peace of mind.

High-performance oil filler caps are typically made of metal and are designed to withstand the higher temperatures and pressures that are common in high-performance engines. These caps may also feature additional seals or gaskets to provide an even more secure seal and prevent oil from leaking out.

Oil filler caps that are designed for extreme conditions, such as off-road driving or extreme temperatures, are also available. These caps are typically made of metal and may feature additional seals or gaskets to provide a more secure seal in challenging environments.

Conclusion

In conclusion, choosing the right oil filler cap is an important task that can have a big impact on the performance and longevity of your vehicle. By considering factors such as the type of cap, compatibility, material, and performance and durability, you can select the right oil filler cap for your vehicle and ensure that your engine is protected and running smoothly.

Frequently Asked Questions (FAQs)

1. Can you drive without oil fill cap on?

Driving without an oil filler cap can have consequences. If oil in the engine compartment comes into contact with hot parts, it can smoke and emit a bad smell. Additionally, oil can drip down and leave dirty spots on the road surface. It is important to have the oil fill cap securely in place to prevent these issues.

2. Are all oil filler caps the same?

No, oil filler caps are not all the same. The size of the oil cap can vary between different models and even among the same models made at different times. It is recommended to measure the thread pitch and size of your stock oil cap before ordering a replacement to ensure a proper fit.

3. What does an engine oil fill cap do?

The engine oil fill cap, also known as the oil filler cap, is an important component of any automobile. It serves as the primary seal for the oil tank and is usually located on the top of the engine near the valve cover. The oil fill cap is used to fill, measure, and check the engine oil level.

4. Can oil leak from oil filler cap?

Yes, a failing or loose oil filler cap can cause oil to leak from the engine and onto the ground. If the cap is damaged, worn, or not tightened correctly, it can allow oil to escape, leading to a significant loss of oil over time. It is important to ensure the oil filler cap is in good condition and properly secured.

5. What happens if you lose your oil filler cap?

If you lose your oil filler cap, it is important to replace it as soon as possible with the same or a suitable replacement. Driving without an oil filler cap can result in oil being thrown all over the engine compartment, potentially contaminating the oil supply with debris. It is crucial to maintain the proper sealing of the oil system.

6. Should there be pressure when removing oil filler cap?

Most modern engines have positive crankcase ventilation, which maintains a lower pressure inside the crankcase compared to the atmosphere. When removing the oil filler cap, you may feel a slight suction due to this ventilation system. It is normal to experience some pressure or suction when removing the cap.

7. Can a bad oil cap cause oil loss?

Yes, a broken, loose, or missing oil filler cap can cause oil to leak from the engine. The pressure from the engine can put stress on the cap, leading to oil leakage. The valve cover gasket is also a common site of oil leakage in automobiles. It is important to ensure the oil cap is in good condition to prevent oil loss.

8. Why is my oil cap not sealing?

If your oil cap is not sealing properly, it could be due to a damaged cap, a missing O-ring, or a mechanical problem. Another possibility is a plugged-up crankcase ventilation system, which should be addressed promptly to prevent potential failures of oil seals or gaskets. It is recommended to have the issue diagnosed and fixed to maintain proper sealing.

Editor's Notes

During our oil filler cap research, we found 24 oil filler cap products and shortlisted 10 quality products. We collected and analyzed 26,570 customer reviews through our big data system to write the oil filler caps list. We found that most customers choose oil filler caps with an average price of $10.82.

The oil filler caps are available for purchase. We have researched hundreds of brands and picked the top brands of oil filler caps, including ACDelco, Ford, Dorman, Gates, Stant. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.

Oil Filler Caps Comparison Table

#TOP1
#TOP2
#TOP3
#TOP4
#TOP5
#TOP6
#TOP7
#TOP8
#TOP9
#TOP10
Brand ACDelco ACDelco Ford ACDelco Dorman ACDelco Gates Stant Ford AUPARTIK
Exterior Finish Plastic,Rubber Polished Machined Rubber Machined Plastic,Rubber Machined Machined Metal Matte
Color Black Black Black Black black Black Multi black Black -
Material Rubber Rubber Metal Rubber - Rubber Alloy Steel Plastic, Rubber Metal Plastic, Rubber
Item dimensions L x W x H 3 x 2.6 x 2.1 inches 2.8 x 2.8 x 1.6 inches 9 x 4 x 6 inches 2.6 x 2.6 x 2.2 inches 3.15 x 3.15 x 3.15 inches 4.2 x 4.1 x 2.1 inches 3.6 x 3 x 3.6 inches 2.75 x 2.75 x 2.75 inches - -
FTB Score
ftb score rating icon 9.8
ftb score rating icon 9.7
ftb score rating icon 9.5
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 8.9
ftb score rating icon 8.7
ftb score rating icon 8.6
ftb score rating icon 8.6
ftb score rating icon 8.4
Where to Buy