Regan Brown
When it comes to fuel filters for the Duramax engine, there are several options available, each with its own advantages and disadvantages. The AC Delco filters, for example, are known for their slogan If you're not asking for it, you're asking for it, implying that their filters are essential for optimal performance. However, some users have expressed dissatisfaction with the new blue Delco filters, recommending the white Delco filters instead. Other popular options include the CAT filter, which offers a better micron absolute rating than the AC Delco, resulting in cleaner fluid, and the Donaldson filter, which also has a superior micron absolute rating and includes a water separator. The Racor filter is another highly regarded choice, known for its good filtration and water separation capabilities. Ultimately, the best fuel filter for a Duramax engine may depend on factors such as cost, ease of replacement, and the specific needs of the vehicle owner.
Characteristics and Values of the Best Fuel Filter for a Duramax LLY Engine:
| Characteristics | Values |
|---|---|
| Brand | Delco, Racor, Fleetguard, Donaldson, CAT, Wix, Baldwin, Parker |
| Model Numbers | Delco TP3018, Wix, Donaldson P553207, Racor PFF50216, Fleetguard FS20002 |
| Features | Water separator, dual-stage design, final fuel polisher, water screen, glass bowl, lift pump |
| Ease of Change | Wix is easier to change due to smaller diameter |
| Surface Area | Wix has less surface area than Delco/Fleetguard/Racor |
| Fuel Polisher | Wix lacks the fuel polisher that the Delco/Fleetguard/Racor filters have |
| Micron Rating | CAT has a 2-micron rating, Donaldson has a 3-micron rating, both better than AC Delco |
| Price | CAT costs $15, Donaldson costs $17 |
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What You'll Learn
Racor PFF50216 Coalescer filter
The Racor PFF50216 Coalescer filter is a direct replacement coalescing fuel filter for the GM Duramax Engine. It is designed to provide the highest water and particle removal efficiency available in a diesel fuel filter.
The PFF50216 features a two-stage filtration system. The first stage is a primary coalescing filter that traps dirt and extracts finely dispersed water from diesel fuel. This stage utilizes multiple layers of specialized media to effectively capture contaminants. The second stage is a secondary polishing filter that strips away any remaining water and polishes the fuel. This two-stage design ensures that the fuel is thoroughly cleaned and polished before it reaches the engine.
The Racor PFF50216 is known for its superior water separation capabilities, which is crucial for diesel injectors. Water can cause significant issues in diesel engines, so effective water separation is essential for maintaining the health of your Duramax engine. The PFF50216 is an OEM replacement fuel filter, ensuring that it meets the original equipment manufacturer's specifications and standards.
The unique can design of the Racor PFF50216 is proven to resist impact and seal deformation. This durable construction enhances the overall reliability of the filter. Additionally, the PFF50216 provides up to twice the life compared to standard pleated media filters, resulting in reduced maintenance costs and longer intervals between filter replacements.
The Racor PFF50216 Coalescer filter is an excellent choice for your Duramax engine, offering superior filtration, exceptional water separation, and a long service life. Its two-stage design, durable construction, and OEM compatibility make it a top-quality fuel filter option.
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Delco TP3018
The ACDelco TP3018 Fuel Filter is a high-quality, factory replacement fuel filter designed specifically for the 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML. This fuel filter is engineered to deliver superior filtration and performance, effectively removing harmful contaminants such as dirt, water, rust, and paint particles, and protecting your engine to ensure smooth operation.
The TP3018 features two separate filters, an inner and outer filter, with micron ratings of 4 and 10, respectively. This design enables the filter to trap contaminants before they enter the fuel delivery system, improving engine performance and extending the life of your fuel system components.
The TP3018 is a reliable choice for maintaining optimal fuel flow and peak performance in your Duramax. It is easy to install and includes new O-rings. With its advanced filtration technology, the TP3018 helps prevent injector damage and protects your vehicle's fuel system from contaminants.
The ACDelco TP3018 Fuel Filter is a trusted and reliable choice for maintaining the performance and longevity of your Duramax diesel truck's fuel system. It is a recommended upgrade for those seeking superior filtration and engine protection.
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CAT filter
When it comes to fuel filters for the Duramax LLY engine, one option that is often discussed is the CAT filter. This filter is known for its high efficiency and ability to provide clean fuel.
The CAT fuel filter is designed to improve upon the original filter design of GM's Duramax HD trucks. It has a 2-micron rating, indicating its ability to capture small particles and provide effective filtration. This filter is an aftermarket solution, requiring the use of an adapter designed specifically for this CAT part number. It is important to note that it will not work with the stock Duramax fuel filter head.
One advantage of the CAT filter is its durability and quality. Users have reported feeling a noticeable difference in fuel quality, with one person stating that they could "feel the quality of the product." The CAT filter is also praised for its perfect fit with the recommended brackets, ensuring a hassle-free installation process.
Additionally, the CAT filter is known for its ease of use when it comes to changing the fuel filter. The XDP Fuel Filter Adapter, designed for the 2001-2016 GM 6.6L Duramax LLY engine, simplifies the process by threading onto the OEM filter head. This adapter also includes a filter head spacer, providing extra clearance for filter changes, and an aluminium bleeder screw to replace the commonly damaged plastic version.
While the CAT filter is a popular choice, it's worth noting that some users have expressed concerns about losing the water separator function with this filter. However, proper lift pumps can address this issue, ensuring effective water separation. Overall, the CAT filter is a well-regarded option for the Duramax LLY engine, offering high efficiency, ease of installation, and improved fuel quality.
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Donaldson P553207 filter
The Donaldson P553207 filter is a popular choice for the Chevy and GMC Duramax Diesel. It is a large filter that includes water separation and an added glass bowl on the bottom. The filter is also available as a direct replacement for the Fleece L5P Duramax Fuel Filter Kits, Fleece 1998.5-2018 Dodge Ram Cummins Auxiliary Fuel Filter Kits, Fleece 2011-2016 Duramax heated filter bases, and PowerFlo lift pump kits. The filter is rated at 3 microns.
One owner of a Chevy Duramax Diesel reported feeling very comfortable with their setup, which included a lift pump, the Donaldson P553207 filter, and a Racor PFF50216 Coalescer filter on the OEM mount. They emphasised the benefits of the Donaldson filter's large size, water separation capabilities, and the additional glass bowl.
Another owner of a 2007 LBZ classic Chevy Duramax Diesel shared their experience with the Donaldson P553207 filter. They purchased two replacement P553207 filters but noticed that the new ones had a smaller hole in the bottom, which prevented them from installing the clear separator bowl. The new filter was also slightly larger. This issue may be due to a change in the filter design or a different model of the clear water separator bowl being required.
The Donaldson P553207 filter is a reliable option for the Chevy and GMC Duramax Diesel, offering effective fuel filtration and water separation. Its large size and additional features, such as the glass bowl, make it a popular choice among owners. However, it's important to be aware of potential design changes or variations in replacement filters, as they may impact the compatibility of certain components, such as the clear separator bowl.
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Fleetguard FS20002
The Fleetguard FS20002 is a direct premium-grade OEM replacement fuel filter for the 2001 to 2016 GM Pickups & Light Duty Trucks with the 6.6L Duramax engine. It is a fuel and water separator filter, removing up to 99% of harmful water and other particles from diesel fuel. This ensures that your engine is supplied with clean fuel for optimal performance.
The FS20002 is designed to use the OEM water sensor and is rated at 4 microns. It offers high-flow efficiency, with a flow rate of up to 150 gallons per hour, and fuel filtration levels that meet or exceed OEM specifications. The filter is engineered with advanced technology and the best filtering elements to trap suspended particles and entrained water from diesel fuel.
The Fleetguard brand has been defining quality filtration products since 1963 and is now a subsidiary of Cummins Filtration. Fleetguard/Cummins Filtration is an industry leader in filtration, exhaust, coolant, and chemical technologies for diesel and gas markets. Their products are known for their dependability and reliability, surpassing OEM specifications and customer requirements.
The FS20002 is a recommended choice for keeping your 6.6L Duramax diesel fuel clean and maintaining the life of your fuel injection system.
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Frequently asked questions
The best fuel filter for a Duramax LLY is the CAT filter. It has a 2-micron absolute rating, which is better than the AC Delco, and it is also cheaper.
Other good fuel filters include the Donaldson filter (with a 3-micron absolute rating), Fleetguard FS20002, Delco TP3018, and the Racor PFF50216.
It is recommended to change your fuel filter every 2.5 to 3 years, or when needed.
