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If you drive a Buick Regal, a properly functioning oil filter housing is essential to keep engine oil clean and prevent leaks that can lead to costly repairs. Picking the right housing matters because the wrong part can cause poor sealing, premature failure, or fitment issues that affect engine performance. This guide covers seven shortlisted oil filter housings selected for their fitment accuracy, seal reliability, and ease of installation. Read on to understand the evaluation criteria used and what to watch for when selecting a replacement, then review the top picks for this vehicle.
Looking for other parts? See all Buick Regal parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | LesNau Oil Filter and Cap Assembly 12605565 (Vehicle-Specific Fit) |  |
| Best Quality Built to a higher standard if you want something more solid | GM Genuine Parts PF458G Engine Oil Filter Kit (12605565) |  |
| Best Value The sweet spot between price and what you get | PT Auto Warehouse Engine Oil Filter Housing (OFH-GM-0017) |  |
| Best Budget The cheapest option that still gets the job done reliably | Anleecap Oil Filter and Cap Replacement (PF458G) |  |
| Most Popular A crowd favorite that many people choose with confidence | AMCC Oil Filter and Housing Cap Assembly (Replaces 12605565 / PF458G) |  |
| Best Seller A high-volume bestseller chosen again and again | Allmotorparts Oil Filter and Housing Cap Assembly (replacement for 12605565, PF458G) |  |
1. LesNau Oil Filter and Cap Assembly 12605565 (Vehicle-Specific Fit)
| Model Number | 12605565 |
|---|---|
| Manufacturer Part Number | 12605565 |
| Included Components | 12605565 |
| Automotive Fit Type | Vehicle Specific Fit |
This LesNau oil filter and cap assembly replaces worn or leaking factory housings on compatible Buick Regal and other GM models. It is supplied as the cap and housing assembly (no internal filter) and installs in place of a damaged unit to restore the engine oil containment and sealing surface. The cap is built from reinforced material and ships with the replacement part number correspondence for direct fitment; buyers report easy installation and a reliable seal that stops oil seepage. In practice this part is used during routine maintenance when the original cap is cracked, stripped, or leaking at the seam, or when planning to reuse a known-good filter element. Important limitations are that the assembly does not include the filter cartridge and you must verify the listed replacement numbers against your vehicle before buying to ensure fitment. The product targets straightforward, hands-on replacements rather than performance upgrades or cross-vehicle universal solutions.
Best for: Balanced owners who prioritize a reliable, factory-style repair for a leaking or damaged oil filter housing and want a straightforward replacement that restores original function.
Less Ideal for: Buyers seeking a complete filter kit with cartridge included or those looking for performance-modified housings should consider other options.
- Vehicle-specific fit for many Buick, Chevy, GMC, Pontiac, Saturn and Polaris applications
- Replaces both cap and housing to stop leaks caused by cracks or stripped threads
- Built from reinforced material for stable performance and longer service life
- Direct replacement numbers provided for cross-referencing with factory parts
- Does not include the internal oil filter cartridge, sold as cap and housing only
- Fitment must be checked carefully against replacement numbers to avoid incorrect purchases
Verdict: A straightforward, vehicle-specific replacement cap and housing that restores a factory-style seal and stops oil leaks on compatible Buick Regal and related GM models.
2. GM Genuine Parts PF458G Engine Oil Filter Kit (12605565)
| Brand Name | GM GENUINE PARTS |
|---|---|
| Manufacturer | ACDelco |
| Product Grade | Performance Part |
| Automotive Fit Type | Vehicle Specific Fit |
This GM Genuine Parts PF458G kit supplies the filter, cap, and cap seal as a direct fit, factory-quality replacement for compatible GM vehicles. It is designed for performance use with ACDelco Ultraguard filtering media that claims high multi-pass efficiency and reinforced construction to resist pressure spikes and collapse. In practice the kit makes routine oil changes straightforward and reduces the risk of leaks thanks to the included cap and O-ring, and customers report reliable, OEM-like fit and sealing. The heavy shell, spiral-wound core, and poppet bypass valve are intended to improve durability under demanding conditions, which is useful if you push the engine harder or extend drain intervals. The kit is vehicle-specific, so it simplifies selection for the right Buick/GM fitment but offers no universal application. If you need a different fitment or aftermarket performance tuning beyond factory-grade protection, choose a part matched to that specific requirement.
Best for: Performance-oriented owners who prioritize factory-quality protection and durability for regular or spirited driving on Buick Regal models, seeking a dependable, vehicle-validated replacement part.
Less Ideal for: Drivers looking for universal aftermarket housings, high-flow racing filters, or custom-engineered filtration solutions should consider specialty performance options instead.
- Factory-validated fit and components designed for GM vehicles
- High multi-pass filtration efficiency for better contaminant capture
- Reinforced shell and core construction for higher pressure resistance
- Includes cap and seal for a complete oil filter housing service
- Vehicle-specific fit limits use to compatible GM models only
- Not marketed as a high-flow or aftermarket racing filter for extreme modifications
Verdict: A factory-quality, performance-focused filter kit that delivers OEM-level fit and durable filtration for compatible Buick/GM vehicles.
3. PT Auto Warehouse Engine Oil Filter Housing (OFH-GM-0017)
| Manufacturer | PT Auto Warehouse |
|---|---|
| Manufacturer Part Number | OFH-GM-0017 |
| Replaces Part Numbers | 12737844, 12605565, 24460712, 12575810, 12580254 |
| Date First Available | July 4, 2022 |
This PT Auto Warehouse oil filter housing is designed as a replacement for the factory unit on compatible Buick Regal applications. It installs in place of the original housing and holds the spin-on oil filter cartridge and sealing components. The listing notes it replaces several OEM part numbers, which simplifies finding the correct cross-reference. For practical day-to-day use it offers a straightforward swap for a worn or damaged housing and aims to restore a sealed oil filter mount. The part is described as made from quality materials, though image and customer feedback indicate the housing is plastic rather than metal in some listings, so expect a lightweight construction. Benefits include easy bolt-in replacement and compatibility with common GM filter assemblies, but if you prefer a metal aftermarket upgrade you may need to seek a different option. Fitment should be checked against your vehicle VIN or part number before purchase to avoid differences between model years and engine variants.
Best for: Practical optimizers seeking a cost-conscious, factory-style replacement to repair a damaged oil filter housing and return their Buick Regal to regular service.
Less Ideal for: Buyers looking for a performance or heavy-duty metal upgrade, or those who need long-term proven durability data, should consider higher-end aftermarket options.
- Listed as a direct replacement for multiple GM part numbers simplifying fit checks
- Intended to restore proper sealing and filter retention after housing damage
- Lightweight construction eases handling during installation
- Construction appears to be plastic which may not match buyers expecting a metal housing
- Limited public reviews provide little long-term reliability data
Verdict: A budget-friendly factory-style replacement housing intended to get a Buick Regal back to sealed, working condition without extra features.
4. Anleecap Oil Filter and Cap Replacement (PF458G)
| Manufacturer Part Number | PF458G |
|---|---|
| Included Components | oil filter and cap |
| Number of Items | 2 |
| Manufacturer Warranty Description | 12 months |
| Material Type | Steel/Aluminum housing; Cellulose/Glass/Synthetic media |
This Anleecap kit bundles a replacement cartridge-style oil filter with a threaded metal cap and new gasket so you can swap both parts during a service. It is intended as a direct factory-quality replacement for vehicles listed under PF458G/12605565 and arrives ready to install for routine oil changes. The filter media uses cellulose/glass/synthetic fibers and the housing is steel or aluminum, which should provide reasonable filtration on a budget. Buyers report straightforward fit and leak-free performance when the cap threads align, but several reviewers experienced misaligned or faulty cap threads and had to reuse the factory cap. The kit includes two items and a one-year warranty, and it is DIY-friendly for owners doing regular maintenance on Buick Regal and similar GM models. If you need a low-cost, full-cap-and-filter swap this kit delivers parts and gasket in one purchase, but quality control on the cap threads appears inconsistent so check fit before finishing the job.
Best for: Budget-conscious owners who prefer to replace the entire oil filter assembly in one purchase and perform routine maintenance themselves on Buick Regal and other listed GM models.
Less Ideal for: Buyers who expect flawless, factory-perfect fitment every time or who prefer premium filtration performance and tighter quality control should consider higher-end branded housings or separate OEM parts.
- Includes both filter and metal cap plus a new gasket for a complete cap-and-filter change
- Compatible with PF458G/12605565 interchange numbers commonly used on Buick Regal and other GM models
- Metal housing and mixed media filter material offer durability and acceptable filtration for routine service
- Multiple user reports of misaligned or defective cap threads which can prevent proper installation
- Quality control appears inconsistent across units
Verdict: A low-cost cap-and-filter kit that covers PF458G applications and lets budget-minded owners swap the whole assembly in one go.
5. AMCC Oil Filter and Housing Cap Assembly (Replaces 12605565 / PF458G)
| Replaces Part | 12605565, PF458G, PF457G |
|---|---|
| Compatible Vehicles | Buick, Chevy, GMC, Pontiac, Saturn, Polaris (listed models incl. Saturn Vue) |
| Manufacturer | AMCC |
| Included Components | 1pcs (housing cap and gasket) |
This AMCC oil filter and oil filter housing cap assembly replaces factory units and is sold as a complete, ready-to-install unit with cap and gasket. It is intended for routine oil/filter service and for replacing cracked or leaking housings that cause oil loss. The assembly is described as stainless steel construction and arrives with the seal needed for installation, which simplifies a DIY swap during an oil change. Compatibility listings cover a long range of Buick, Chevy, Pontiac, Saturn and Polaris models including the Saturn Vue, so fitment for that vehicle is explicitly supported. As an aftermarket part it aims to meet factory-style fit, form and function and includes a one-year manufacturer guarantee. Expect the practical benefit of a lower-cost replacement and a sturdier cap compared with some original plastic caps, but note this is not a genuine factory part and long-term durability depends on installation and vehicle conditions.
Best for: Budget-conscious owners looking for an affordable, serviceable replacement housing that keeps repair costs low and can be installed during routine oil changes.
Less Ideal for: Drivers seeking a genuine factory part or those who prefer parts with long-term OEM-backed track records should consider alternatives from the vehicle manufacturer or authorized suppliers.
- Sold as a complete assembly with cap and gasket for straightforward installation
- Aftermarket stainless steel cap claimed to be more durable than original plastic caps
- Compatibility includes Saturn Vue and other common GM models for direct replacement
- One-year manufacturer guarantee and pre-shipment inspection
- Aftermarket part rather than a genuine factory original
- Long-term durability and exact fit can vary by vehicle and installation
Verdict: A low-cost, complete replacement housing and cap assembly that simplifies repair for Saturn Vue owners who want a budget-friendly alternative to factory parts.
6. 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.
Choosing the Right Buick Regal Oil Filter Housing: Key Factors to Consider
Fitment and Mounting
Accurate fitment is the single most important factor when selecting an oil filter housing for a Buick Regal. The housing must align precisely with engine mounting bosses, bolt patterns, and oil ports so that gaskets and seals compress evenly. Poor fitment can lead to uneven gasket loading and cause leaks or stress concentrations that accelerate cracking.
Check that mounting flanges, bolt hole locations, and port orientations match the vehicle's engine. Consider whether any ancillary brackets or sensors mount to the housing and ensure the replacement provides the same attachment points to avoid extra adapters or modifications.
Seal and Gasket Quality
The housing's sealing surfaces and included gaskets determine how well it prevents oil leaks. Materials that resist heat, oil degradation, and compression set will retain sealing force over time. A high-quality gasket or O-ring that matches the groove design reduces the chance of blowouts or seepage at startup.
Pay attention to whether the housing includes replacement seals and whether those seals are made from durable elastomers compatible with engine oil and temperature cycles. Proper groove design and chamfered edges on ports also help guide seals into place during installation.
Material and Structural Strength
Housings are commonly made from aluminum, steel, or reinforced plastics. Material choice affects resistance to cracking, warping, and corrosion under heat and vibration. A structurally robust housing will better tolerate torque from fasteners and resist stress concentrations that cause cracking over time.
Consider the operating environment the housing will see, including engine bay temperatures and exposure to chemical contaminants. Look for smooth castings or machined surfaces at critical sealing areas rather than rough or porous material that can create weak points.
Compatibility with Oil Flow and Pressure
The housing is part of the engine's oil circulation path, so internal passage geometry and filter orientation must maintain correct oil flow and pressure characteristics. Deviations can affect filter performance, oil delivery to bearings, and overall engine lubrication.
Verify that the replacement preserves or matches the original internal passages and inlet/outlet sizes. If the housing includes integrated pressure ports or sensors, ensure they are placed and sized to work with the engine's monitoring systems and do not introduce flow restrictions.
Ease of Installation and Serviceability
A housing that is straightforward to install reduces labor time and the chance of installation errors. Features that improve serviceability include accessible fasteners, clear sealing surfaces, and availability of replacement seals or gaskets as separate parts.
Consider how much disassembly is required to reach the housing on your Buick Regal and whether special tools are needed. A design that allows filter and seal replacement without removing unrelated components makes routine maintenance faster and less error-prone.
Resistance to Heat and Vibration
Engine compartments expose the housing to continuous thermal cycling and mechanical vibration. Resistance to these stresses affects long-term sealing and the likelihood of cracking. Materials and design that tolerate expansion and contraction will preserve fit and seal integrity.
Look for housings with reinforced ribs, strain-relief features around bolt bosses, and elastomeric seals that maintain elasticity across the expected temperature range. Properly designed interfaces reduce fatigue and slow down aging of the part.
How We Chose the Best Buick Regal Oil Filter Housing
We focused on items that fit the Buick Regal precisely and that address the most common failure modes for this component. Our selection criteria emphasized accurate OEM-equivalent fitment, the quality and material of sealing surfaces and gaskets, resistance to cracking under heat and vibration, and ease of installation including required tools and accessible mounting points. We also considered serviceability factors such as availability of replacement seals and standardized part numbers for straightforward sourcing. Durability under thermal cycling and compatibility with the engine's oil flow and pressure characteristics were further filters.We excluded units that lacked clear fitment information for the Buick Regal, housings made from questionable plastic or poorly finished castings, and items without documented gasket or seal quality. We did not include performance-modified or vehicle-specific custom housings that alter oil pressure or flow beyond stock specifications.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common symptoms of a failing oil filter housing on a Buick Regal?
Common signs include visible oil leaks around the housing area, a drop in engine oil level without obvious external leaks elsewhere, and oil smell in the engine bay. You may also notice oil spots under the vehicle after it has been parked. In some cases, degraded sealing can lead to fluctuating oil pressure warnings or dashboard indicators that respond to oil level changes.
Can I replace just the gasket or seal instead of the whole housing?
Often a worn gasket or O-ring can be replaced separately if the housing itself is undamaged and not cracked. Replacing seals is a common first step and can restore a proper seal. However, if the housing shows cracking, warping, or damaged mounting surfaces, a full housing replacement is usually the safer long-term solution.
How do I know the correct oil filter housing part number for my Buick Regal?
The correct part number depends on your Buick Regal's model year and engine variant. Check your vehicle's service manual or parts catalog, and match engine codes and production dates. Many parts suppliers also cross-reference by VIN, which can help ensure the part matches engine features such as sensor ports or accessory mounts.
What causes oil filter housing cracking and how can it be prevented?
Cracking is often caused by thermal cycling, vibration, over-tightening of bolts, or using housings made from brittle materials. Prevention includes choosing a housing made from durable material, following correct torque specifications during installation, and replacing seals before they harden and transfer stresses to the housing. Regular inspections can catch early signs of fatigue.
Will replacing the oil filter housing stop an oil filter housing leak immediately?
Replacing a damaged housing or worn seals typically stops leaks if the leak source is the housing assembly. It is important to clean mating surfaces, use the correct gasket or O-ring, and torque fasteners to specification. If the leak stems from adjacent components or a loose connection elsewhere, addressing only the housing may not fully resolve the issue.
Conclusion
When choosing an oil filter housing for a Buick Regal, prioritize correct fitment and high-quality sealing components to prevent leaks and ensure reliable oil circulation. Balance material strength and resistance to thermal and mechanical stress against ease of installation and availability of replacement seals.Accept that tradeoffs exist: a very rigid housing may resist cracking but require precise torque control at installation, while softer sealing materials can improve leak resistance but need periodic inspection. Focus on matching the housing to your engine's mounting and oil flow needs and on using proper installation practices to maximize service life.
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