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Picking the right oil filter for a Buick Regal matters because it directly affects engine cleanliness, oil flow, and long-term wear. A properly matched filter reduces contaminants, maintains oil pressure, and supports reliable performance during normal driving and extended intervals. This guide covers our shortlisted top picks for the Buick Regal and explains the practical criteria we used to evaluate them, including filtration efficiency and fitment reliability. Read on to understand what to look for before you replace the oil filter.
Looking for other parts? See all Buick Regal parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Allmotorparts Oil Filter and Housing Cap Assembly (replacement for 12605565, PF458G) |  |
| Most Popular A crowd favorite that many people choose with confidence | Bosch 3324 Premium Oil Filter with FILTECH Media |  |
| Best Quality Built to a higher standard if you want something more solid | Mann Filter HU 6007 x Cartridge Oil Filter |  |
| Best Budget The cheapest option that still gets the job done reliably | iFJF PF457GO Oil Filter Element (3-pack) |  |
| Most Sold A high-volume bestseller chosen again and again | AMCC Oil Filter and Housing Cap Assembly (replacement for 12605565) |  |
| Best Value for Money The sweet spot between price and what you get | iFJF PF457GO Oil Filter Element replacement for Buick Regal 2.4L |  |
| Best Overall The best all-around choice for most situations | PurolatorBOSS PBL15436 Cartridge Oil Filter |  |
1. Allmotorparts Oil Filter and Housing Cap Assembly (replacement for 12605565, PF458G)
| Thread Size | M20 x 1.5 |
|---|---|
| Product Grade | Replacement Part |
| Compatible with Vehicle Type | Car |
| OEM Equivalent Part Number | 12605565, PF458G, PF457G, PF457GF, 12605566 |
This Allmotorparts kit combines a high-quality oil filter with a metal oil filter housing cap and gasket so you can replace the whole assembly in one job. It is intended as a direct-fit replacement for vehicles that use part numbers like 12605565 and PF458G and is typically used during routine oil service or when the original cap is damaged or leaking. The metal cap and supplied gasket reduce the chance of cracking compared with older plastic caps and make installation straightforward. Buyers get a ready-to-install set that should restore a proper seal and simplify filter changes. Because it is an aftermarket part rather than factory-made, fitment should be confirmed against the vehicle compatibility list before purchase, and buyers replacing a severely damaged housing may still need additional repairs. Expect the unit to perform like a factory-style replacement for normal maintenance intervals but verify torque and sealing surfaces at install to avoid leaks.
Best for: Reliability-focused buyers who prioritize restoring factory-style fit and a durable metal cap during routine oil service on their Buick Regal.
Less Ideal for: Owners needing a genuine factory part number or those whose vehicle has a severely damaged housing surface that requires full housing replacement should look elsewhere.
- Includes oil filter, metal housing cap and gasket for one-step replacement
- Metal cap reduces risk of cracking versus original plastic caps
- Supplied filter and cap are engineered to match factory fit and function
- Good fitment coverage for Buick Regal and other compatible GM models
- Aftermarket part so material and long-term durability may vary from factory parts
- Not a solution if the oil filter housing mounting surface is warped or the housing itself is cracked
Verdict A convenient replacement kit that restores factory-style fit with a more durable metal cap, making it a practical choice for Regal owners doing routine oil service.
2. Bosch 3324 Premium Oil Filter with FILTECH Media
| Brand Name | Bosch |
|---|---|
| Number of Items | 1 |
| Compatible with Vehicle Type | Car |
| Material Type | Silicone |
The Bosch 3324 Premium Oil Filter is a vehicle-specific cartridge-style replacement that uses Bosch FILTECH media to trap contaminants and protect the engine. It installs in place of the factory cartridge on compatible Buick Regal models and includes the replacement O-ring when required for the application. The key benefits are high filtration efficiency and dirt-holding capacity, which reduce the amount of abrasive particles circulating in oil between services. In practice this means cleaner oil for critical engine parts and reduced wear over time. Fitment is engineered to match the factory installation, so swaps are straightforward for anyone doing a routine oil change on a Regal. Limitations to note are the cartridge design itself, which some owners find less robust than metal spin-on filters, and occasional reports of damaged packaging or fit issues when vehicle trim or engine variants were not checked carefully. Verify exact Regal years and engine options before ordering to avoid mismatch.
Best for: A convenience-driven buyer who wants a ready-to-install, factory-quality replacement that simplifies routine oil changes on a Buick Regal and prioritizes hassle-free fit and reliable filtration.
Less Ideal for: Drivers who prefer metal spin-on filters for perceived durability or those unwilling to check exact trim and engine compatibility should consider alternatives.
- FILTECH media with up to 99% filtration efficiency at specified micron rating
- High dirt-holding capacity (up to 14 grams) to reduce particle recirculation
- Engineered for vehicle-specific, factory-quality fit for easier installation
- Cartridge-style plastic cap design may feel less durable than metal spin-on filters
- Fitment can vary by Regal trim and engine so verification is required
- Some customers reported damaged packaging on arrival
Verdict A convenient, factory-fit cartridge filter for Buick Regal owners who want high-efficiency filtration without complicated installation.
3. Mann Filter HU 6007 x Cartridge Oil Filter
| Manufacturer Part Number | HU 6007 x |
|---|---|
| Compatible with Vehicle Type | Car |
| Product Grade | Replacement Part |
| Material Type | Paper |
The Mann Filter HU 6007 x is a cartridge-style oil filter element engineered to meet factory-quality filtration for compatible GM applications such as the Buick Regal. It replaces only the internal filter element while the housing remains in place, which preserves the factory module and speeds routine service. The media is designed for high dirt-holding capacity and stable performance under heavy-duty and cold-start conditions, and the flexible O-ring and secure end caps support a reliable seal during installation and operation. In real-world use this means cleaner oil for longer, reduced engine wear during start-up, and predictable behavior with modern high-performance oils. The main limitations are that it is a vehicle-specific cartridge so correct fitment must be confirmed for your Regal model and it does not include the outer housing or hardware for housings that are damaged. For performance-focused owners who keep up with recommended maintenance, this filter gives OEM-level protection without unnecessary extras.
Best for: Performance-oriented owners who prioritize engine protection and consistent filtration and who perform routine maintenance to preserve engine performance.
Less Ideal for: Drivers who need a complete replacement housing or those unsure about exact fitment should consider a full cartridge kit or a different filter that includes the housing and hardware.
- Factory-quality filtration media with high dirt-holding capacity
- Cartridge design allows replacing just the element while retaining the factory housing
- Flexible O-ring and secure end caps provide a reliable seal during operation
- Stable media performance under extreme and cold-start conditions
- Vehicle-specific fit requires verifying compatibility with your Buick Regal model
- Does not include the external filter housing or additional installation hardware
Verdict An OEM-quality cartridge element that delivers dependable, high-capacity filtration for Buick Regal owners who want performance-grade engine protection while retaining the factory housing.
4. iFJF PF457GO Oil Filter Element (3-pack)
| Compatible engine | 2.4L Buick Regal |
|---|---|
| Cross reference | 19260345, PF457GO, PF2244G |
| Filtration efficiency | 25 to 30 microns |
| Package contents | 3 x filter elements, 3 x O-ring |
This iFJF PF457GO comes as a three-pack of replacement oil filter elements intended for 2.4L Buick Regal models and similar GM engines. It replaces factory part 19260345 and ships with replacement O-rings so you can refresh the cartridge and seal when you service the engine. The listing claims filtration efficiency down to roughly 25 to 30 microns, which is typical for replacement elements and should remove most abrasive particles that harm engine components. Buyers will appreciate the included O-rings and the economy of a multi-pack when you change oil frequently. Limitations are that this is a cartridge-style element, so installation requires access to the housing and may need a low-profile socket on some Regal applications, and the filter is a replacement-grade aftermarket part rather than a factory labeled unit. For routine oil changes on a Buick Regal 2.4L the product offers a low-cost way to keep filtration current, but users who want branded factory-specified parts may prefer an OEM option.
Best for: Budget-conscious owners who prioritize low per-change cost and want a practical replacement for routine maintenance on a Buick Regal 2.4L.
Less Ideal for: Buyers seeking factory-branded parts, guaranteed OEM chemical formulations, or extended-life/high-performance filtration should consider OEM or higher-end alternatives.
- Three-pack provides value for frequent oil changers.
- Includes replacement O-rings for the housing lid, simplifying service.
- Specifies cross-references to GM part numbers for fitment to 2.4L Buick Regal engines.
- Aftermarket replacement grade rather than a factory-branded filter.
- Requires access to the cartridge housing which can need a low-profile socket on some Regal installations.
Verdict A cost-effective three-pack cartridge replacement that covers routine maintenance on 2.4L Buick Regal engines if you want a budget-friendly alternative to factory parts.
5. AMCC Oil Filter and Housing Cap Assembly (replacement for 12605565)
| Replaces Part Number | 12605565, PF458G, PF457G |
|---|---|
| Included Components | 1pcs |
| Material Type | Stainless Steel |
| Compatible with Vehicle Type | Car |
This AMCC assembly replaces the oil filter element and the threaded housing cap in one unit, intended for direct swap on Buick Regal engines that use part 12605565. It is used during routine oil changes to restore a leaking, cracked, or fatigued housing and to secure the spin-on style filter in place. The listing highlights a stainless steel cap, included gasket, and factory-style fit and function which makes installation straightforward for a do-it-yourselfer or a technician. Buyers will appreciate that the part ships ready to install and is marketed to match factory performance while reducing the risk of oil leaks from old plastic caps. Important limitations are that this is an aftermarket part not produced by the vehicle manufacturer and its long term durability versus the original part depends on driving conditions and maintenance; also compatibility must be confirmed for your Regal year and engine before ordering. The seller offers a one-year guarantee and customer support for replacements if problems arise.
Best for: Risk-averse mainstream buyers seeking a straightforward, ready-to-install replacement for a Regal that minimizes the chance of oil leaks and avoids frequent repeat trips to the shop.
Less Ideal for: Drivers who prefer onlyOEM parts from the vehicle manufacturer or who want dealer-sourced replacement parts should consider factory-sourced options instead.
- Includes both oil filter element and housing cap for a single replacement job
- Stainless steel cap advertised for improved durability over brittle plastic caps
- Ships with gasket to simplify installation and reduce leak risk
- Marketed to match factory fit and function for straightforward installation
- Aftermarket part rather than a factory-manufactured component
- Long-term durability compared with original part can vary by use and climate
Verdict A convenient, factory-style aftermarket oil filter and housing cap assembly for Buick Regal owners who want an easy, leak-reducing replacement without buying a dealer part.
6. iFJF PF457GO Oil Filter Element replacement for Buick Regal 2.4L
| Compatible vehicle | Buick Regal 2.4L |
|---|---|
| Cross reference | 19260345, PF457GO, PF2244G |
| Filtration efficiency | 25 to 30 microns |
| Package contents | 1 filter element and 1 O-ring |
This iFJF PF457GO is a vehicle-specific oil filter element made to replace the factory cartridge in Buick Regal 2.4L engines. It installs in place of the original element and includes a replacement O-ring, so it is used during routine oil changes where the cartridge-style filter is accessed inside the filter housing. The listing notes filtration efficiency around 25 to 30 microns and cross-references GM part 19260345, which helps confirm fit and function for Regal owners. Users report generally secure fitment and durable pleats for multiple change cycles, and the included O-ring avoids a separate parts run when servicing. Limitations include occasional reports of fitment problems where the element did not seat correctly and a construction that some buyers found less heavy-duty than OEM. For a practical owner looking to control maintenance costs, this filter delivers acceptable filtration performance and an easy swap-in replacement, but double-check seating during installation to avoid issues.
Best for: Owners who prioritize practical, cost-efficient servicing and want a direct replacement element for routine oil changes on a Buick Regal 2.4L.
Less Ideal for: Drivers who prefer the highest-end, heavy-duty filtration options or who do infrequent, extended-interval service and want proven premium longevity should consider higher-tier alternatives.
- Vehicle-specific cartridge design that replaces the factory filter element for Buick Regal 2.4L
- Includes replacement O-ring so you get the sealing part needed for a complete service
- Manufacturer cross-references common GM part numbers for easier verification of fit
- Reported pleat and structure durability comparable to other aftermarket elements
- Some users reported the element did not seat properly in every housing which can cause installation frustration
- Build feels lighter than some factory-quality filters which may concern long-term heavy-duty use
Verdict A budget-friendly, cartridge-style replacement that fits the Buick Regal 2.4L and includes the needed O-ring, but check seating at installation for reliable performance.
7. PurolatorBOSS PBL15436 Cartridge Oil Filter
| Thread Size | M16 x 1.5 |
|---|---|
| Item Type Name | PurolatorBOSS Maximum Engine Protection Cartridge Oil Filter |
| Compatible with Vehicle Type | Car, Truck |
| Number of Items | 1 |
The PurolatorBOSS PBL15436 is a cartridge oil filter designed to deliver long-life protection for compatible Buick Regal models. It uses Purolator’s SmartFUSION full synthetic filter media with a reinforced polymer mesh backing to increase dirt-holding capacity and maintain flow under demanding conditions. The cartridge design fits into the factory canister and includes a silicone anti-drainback valve and quality gasket intended to reduce dry starts and prevent leaks. In practice this filter is suited to longer service intervals on full synthetic oil and for drivers who do a mix of highway miles and frequent commuting; it holds up under towing, heavy use, and extreme climates according to the manufacturer. Installation follows the factory replacement process for cartridge filters and requires seating the internal plug and O-ring correctly to avoid element distortion. Limitations are that it must match the exact Buick Regal fitment year and engine variant, and because it is a cartridge type you will still need to reuse or inspect the canister components during service.
Best for: A balanced all-round buyer who wants a durable, longer‑life filter that supports extended synthetic oil intervals and handles mixed driving conditions while keeping maintenance straightforward.
Less Ideal for: Drivers who prefer spin-on disposable filters for the simplest DIY swap or users who need a universal, multi-vehicle filter option should consider alternatives.
- Full synthetic SmartFUSION media for high dirt removal and extended service life
- Reinforced polymer mesh backing improves structural strength under high flow
- Silicone anti-drainback valve to reduce dry-start wear
- Premium gasket design for a reliable, leak-resistant seal
- Requires exact Buick Regal fitment verification before purchase
- Cartridge-style service means attention to housing O-ring and plug seating during installation
Verdict A factory‑replacement cartridge filter built for longer synthetic oil intervals and demanding driving, provided you confirm exact Buick Regal fitment before buying.
Choosing the Right Buick Regal Oil Filter: Key Factors to Consider
Filtration Efficiency and Micron Rating
Filtration efficiency determines how effectively a filter removes particles that can wear engine components. Look for published micron ratings and capacity figures so you know what size particles the media targets and how long it can hold debris before restricting flow.
Higher-efficiency media can extend engine life but may restrict flow on poorly designed elements, so check both efficiency and flow performance. For vehicles driven in dusty or stop-and-go conditions, a filter with higher contaminant capacity can reduce the risk of bypass valve activation.
Fitment and Thread/Gasket Compatibility
Correct fitment is critical to avoid leaks and ensure proper sealing against the engine block. Confirm the filter matches the Buick Regal's thread size, gasket diameter, and seating style to prevent oil seepage or installation damage.
A mismatched gasket or wrong thread pitch can cause leaks or cross-threading, so always verify physical specs rather than relying only on general fit claims. Proper fit also affects how easy the filter is to tighten and remove during maintenance.
Bypass Valve and Anti-Drainback Features
A bypass valve prevents oil starvation if the filter becomes clogged or during cold starts when oil is thick. Filters with a well-designed bypass valve preserve oil flow and protect the engine under adverse conditions.
Anti-drainback valves keep oil in the filter when the engine is off, reducing dry starts and wear. These features matter more for engines with long oil passages or if the vehicle sits between starts, so check the presence and design quality of these internal components.
Filter Media Type and Construction
The media material and how it is pleated affect both filtration performance and longevity. Synthetic media often offers finer filtration and higher dust-holding capacity, while blended or cellulose media can be more economical for routine service intervals.
Reinforced end caps, strong adhesive bonding, and a sturdy center tube improve durability under pressure and high temperatures. Consider media type in relation to your maintenance habits and the oil type you use.
Serviceability and Installation
Ease of installation affects whether you can perform an oil filter replacement correctly and safely. Spin-on filters are typically straightforward to swap, while cartridge-style filters require careful handling of the housing and seal.
Look for features like clear tightening guidance on the canister, a replaceable gasket, and accessibility of the filter location on the Buick Regal. Simple serviceability reduces the chance of installation errors that can lead to leaks or improper torque.
Durability and Heat Resistance
Engine bay temperatures and oil temperatures vary with driving conditions, so filter materials need to resist collapse and maintain seal integrity. High-quality construction helps the filter tolerate prolonged heat and pressure cycles without degrading.
Durable filters are less likely to deform, leak, or suffer media breakdown, which contributes to consistent filtration performance over the intended maintenance interval.
FAQ
How often should I change the oil filter in a Buick Regal?
Interval recommendations vary with driving conditions and oil type, but many owners change the oil filter at every oil change. For routine driving, changing the filter with each oil service helps maintain filtration efficiency and reduce engine wear.
Can I use a different style of oil filter than the original equipment?
You can use an alternative filter style if it matches the Buick Regal's fitment specs and provides equivalent filtration and bypass features. Ensure thread size, gasket dimensions, and oil flow characteristics are compatible to avoid leaks or performance issues.
What should I do if I notice an oil filter gasket leak after installation?
If you detect a leak, stop driving and check the filter for correct seating and proper torque. A gasket leak often results from cross-threading, a damaged seal, or inadequate tightening. Replace the filter or gasket if it is damaged and verify torque to manufacturer specifications.
Are synthetic-media filters necessary for the Buick Regal?
Synthetic-media filters can offer finer filtration and greater capacity, which may benefit engines under high stress or extended drain intervals. For normal service intervals, high-quality cellulose or blended-media filters can also provide adequate protection when properly matched to the vehicle.
Does the filter style affect oil pressure or flow?
Filter design influences flow resistance, especially as the element loads with debris. A well-designed filter maintains adequate flow and has a bypass that activates before oil pressure drops to harmful levels. Choose filters with documented flow characteristics to reduce the risk of pressure issues.
How We Chose the Best Buick Regal Oil Filter
We focused on parts that are specifically compatible with the Buick Regal and that meet common service intervals and engine requirements. Key evaluation criteria included filtration efficiency, media quality and micron ratings, fitment accuracy including thread size and gasket design, oil flow characteristics and bypass valve performance, and durability under typical operating temperatures. We also considered ease of installation factors like spin-on versus cartridge styles, availability of replacement elements, and common failure modes such as gasket leaks. Filters that lacked clear specifications for filtration media or fitment details, or that did not meet basic construction standards, were excluded. Our selection prioritizes reliable filtration and correct fit over marketing claims or brand prominence.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting an oil filter for a Buick Regal, prioritize correct fitment, filtration efficiency, and reliable internal components like bypass and anti-drainback valves. These factors together determine how well the filter protects the engine between services. Balance media type and durability against your driving conditions and service habits. Focusing on clear specifications for thread and gasket compatibility, micron ratings, and construction quality will help you choose a filter that maintains oil flow and minimizes the risk of leaks or premature failure.
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