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If your Buick Regal is showing low oil pressure or unusual engine noise, choosing the right oil pump matters for engine longevity and performance. The correct oil pump ensures steady oil flow, reduces wear, and maintains proper lubrication under normal driving and heavier loads. This guide looks at the top shortlisted oil pumps for the Buick Regal and explains the evaluation criteria used to identify reliable options. Read on for what to consider before replacing an oil pump and how each factor affects your vehicle. The product list that follows contains our top picks for this application.
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 | A-Premium Replacement Oil Pump for Buick Regal (3.1L/3.4L V6) |  |
| Most Popular A crowd favorite that many people choose with confidence | Gledewen Timing Chain and Head Gasket Kit with Water and Oil Pumps (for 2.4L Engines) |  |
| Best Quality Built to a higher standard if you want something more solid | HAYIAUTO 2.4L Timing Chain Kit with Water Pump, Oil Pump, VCT Actuator and Head Gasket Set |  |
| Best Budget The cheapest option that still gets the job done reliably | Quivimoro High Volume Oil Pump, Replacement for Buick Regal 2.0L/2.2L/2.4L |  |
| Most Sold A high-volume bestseller chosen again and again | AULINK M349 Engine Oil Pump (Fits Buick Regal) |  |
| Best Value for Money The sweet spot between price and what you get | Chefull M349 Engine Oil Pump Replacement (Replace OP314) |  |
| Best Overall The best all-around choice for most situations | OWNWEEDA 9-4201S 2.4L Timing Chain Kit with Water and Oil Pump |  |
1. A-Premium Replacement Oil Pump for Buick Regal (3.1L/3.4L V6)
| Housing Material | Cast Iron |
|---|---|
| Oil Pump Volume Type | Standard Volume |
| Oil Pump Pressure Type | Standard Pressure |
| Mounting Hole Quantity | 1 |
This A-Premium oil pump is a direct replacement-style unit intended for Buick Regal V6 engines (3.1L and 3.4L). It installs where the factory oil pump sits and provides standard volume and pressure performance, so it restores normal oil circulation after a failed or worn pump. The pump uses a cast-iron housing and comes without an O-ring, with a single mounting hole and a design that matches common factory reference numbers for Regal fitment. In practice it suits a rebuild or repair job where you need reliable, factory-quality oil delivery without upgrading to high-volume or high-pressure systems. Installation requires typical engine access and some care fitting the pickup tube, but user reports show correct fit and good pressure once installed. Limitations are that this is a standard-spec replacement rather than a performance unit and the package does not include an O-ring, so you should source any seals separately and verify compatibility before ordering.
Best for: Reliability-focused owners who prioritize restoring factory oil circulation and dependable daily driving performance for a Buick Regal without upgrading to performance components.
Less Ideal for: Drivers planning engine modifications, higher oil flow needs, or track use should consider a high-volume or performance oil pump instead.
- Cast-iron housing for durable, long-lasting construction
- Standard-volume and standard-pressure design restores factory oil delivery
- Fits Buick Regal V6 3.1L and 3.4L engine applications listed
- Matches common factory reference numbers for straightforward replacement
- Does not include an O-ring, so seals must be sourced separately
- Standard-spec unit only, not intended for high-performance or modified engines
Verdict A practical, factory-style replacement oil pump for Buick Regal V6 engines that restores reliable oil pressure but is not a performance upgrade.
2. Gledewen Timing Chain and Head Gasket Kit with Water and Oil Pumps (for 2.4L Engines)
| Compatible Engine | 2.4L L4 DOHC (selected Buick Regal years) |
|---|---|
| Includes | Timing chains, guides, tensioners, water pump, oil pump, MLS head gaskets, head bolts |
| Condition | New |
| Manufacturer | Gledewen |
This comprehensive kit supplies the timing chain, tensioners, guides, balance shaft components, water pump, oil pump, head gaskets and related gaskets and bolts needed when doing an engine top-end service on a 2.4L Buick Regal. It is designed to replace the factory items and consolidate many parts into one purchase, which makes it convenient for a multi-step repair like timing chain and head gasket work. The kit lists multiple MLS head gaskets, cam and crank sprockets, VVT sprockets, valve cover and timing cover gaskets, two VVT solenoids, and both water and oil pumps so you can complete sealing and front-end timing work without sourcing separate parts. Practical benefits include fewer ordering errors and matched components that simplify reassembly. Important limitations are that it is a parts kit rather than a professional remanufactured pump, so pump longevity compared with a dealer pump can vary, and accurate fit depends on matching your Regal model year and engine variant before installation.
Best for: A convenience-driven buyer who wants a single-purchase solution to perform timing chain, head gasket and front-end pump service on a Buick Regal 2.4L engine and minimize parts sourcing during the job.
Less Ideal for: Owners seeking factory-remanufactured or OEM-branded pumps only, or those who prefer to replace individual components selectively rather than all at once.
- Complete kit consolidates timing chain, guides, tensioners, head gaskets, water pump and oil pump for one repair job
- Includes multiple MLS head gaskets and cylinder head bolts needed for head work
- Supplies both VVT sprockets and solenoids so variable valve timing components are refreshed during service
- Water pump and oil pump included reduce the need to source separate seals and pump hardware
- Many small gaskets and seals included to simplify reassembly and reduce trip-backs to the parts store
- Parts kit contains aftermarket pumps rather than factory-remanufactured units so durability can be variable
- Requires careful year/engine verification to ensure fit for a specific Buick Regal 2.4L variant
Verdict A convenient all-in-one timing, gasket and pump kit for Buick Regal 2.4L owners who want to complete a top-end repair with one parts purchase, though the aftermarket pumps may not match dealer remanufactured durability.
3. HAYIAUTO 2.4L Timing Chain Kit with Water Pump, Oil Pump, VCT Actuator and Head Gasket Set
| Fitment engine | 2.4L Ecotec (selected Buick Regal years) |
|---|---|
| Includes | Timing chains, guides, tensioners, water pump, oil pump, VCT solenoids, head gasket kit |
This HAYIAUTO 2.4L timing chain kit supplies the full range of timing-related components needed when servicing a 2.4L Ecotec Buick Regal engine, including the timing chains, multiple guide rails, tensioners, VCT sprockets/solenoids, water pump, oil pump and a multi-layer steel head gasket kit. It is typically used during an engine top-end overhaul or when replacing worn timing components to restore valve timing accuracy and prevent oil or coolant leaks. Notable features are the inclusion of the oil pump and water pump alongside balance shaft hardware, which simplifies sourcing parts for a single service and reduces the risk of missed failing components. The head gasket set and included cylinder head bolts let you complete a head service without buying separate sealing parts. Expect a professional installation; the kit is intended for experienced technicians and requires correct timing mark calibration after assembly. The package is comprehensive but bulky, and buyers should verify the 2.4L Regal year fitment before installation to avoid compatibility issues.
Best for: Performance-oriented owners focused on restoring or maintaining peak engine timing and reliability on a 2.4L Buick Regal, and who prioritize a complete, factory-quality replacement during a top-end service.
Less Ideal for: Casual DIYers seeking a simple single-part replacement or owners who only need an isolated component rather than a full overhaul kit should consider targeted replacement parts instead.
- Complete kit includes timing chains, guides, tensioners, water pump and oil pump for a single service job.
- Includes MLS head gasket kit and cylinder head bolts so sealing components are covered in one purchase.
- VCT sprockets and solenoids included, which helps restore variable valve timing function without separate parts hunting.
- Intended for professional installation and requires precise timing calibration after fitment.
- Large kit contains many parts that may be unnecessary for minor repairs, adding cost and complexity.
Verdict A full, high-quality timing and sealing kit that lets a performance-minded Buick Regal owner complete a comprehensive 2.4L top-end service in one purchase.
4. Quivimoro High Volume Oil Pump, Replacement for Buick Regal 2.0L/2.2L/2.4L
| Compatible engines | 2.0L / 2.2L / 2.4L |
|---|---|
| Material | Aluminum |
| Performance increase | Approximately 18% higher volume, +10 PSI |
| Manufacturer | Quivimoro |
This Quivimoro high-volume oil pump is a direct-replacement style unit intended for Buick Regal 2.0L, 2.2L, and 2.4L engines and is aimed at owners who want extra oil flow without a complex install. The pump uses larger internal gears and an aluminum housing to deliver roughly 18% higher volume and about 10 psi increased pressure compared with the factory-capacity unit, which helps maintain oil pressure, improve bearing lubrication, and assist heat dissipation under heavier loads. Installation is typical of a factory-quality replacement and is suitable for a DIYer familiar with oil system work or a mechanic. The main practical benefit is improved lubrication for engines running higher clearances or occasional heavier duty use, reducing wear on crank and cam components. Limitations are that it is a higher-capacity aftermarket part rather than a factory-specified calibration, so it may change oil pressure behavior and should be used only where additional flow is desired; confirm compatibility with your Regal model year and engine before fitting.
Best for: Budget-conscious Buick Regal owners looking to improve engine lubrication and longevity without a costly performance rebuild and who prefer a straightforward replacement part.
Less Ideal for: Drivers who want strictly factory-spec oil system behavior or those who have a perfectly healthy, low-mileage engine that does not need increased oil flow.
- Increases oil flow by roughly 18% and raises pressure by about 10 psi for stronger lubrication
- Aluminum construction and machined exterior resist heat and corrosion
- Designed as a direct replacement for compatible 2.0L/2.2L/2.4L Buick Regal engines for straightforward installation
- Helps carry away heat and reduce wear in higher-performance or higher-clearance engines
- Aftermarket higher-capacity design can alter the vehicle's original oil pressure characteristics
- Compatibility depends on exact Regal engine and year so extra verification is required
Verdict A cost-conscious way for Buick Regal owners to boost oil flow and protection, but verify fitment and accept altered oil pressure behavior.
5. AULINK M349 Engine Oil Pump (Fits Buick Regal)
| Manufacturer | AULINK |
|---|---|
| Item model number | M349 |
| Lift Type | Mechanical |
| OEM Part Number | M349, OP314, 12582069, 12584621, 12606580, 12637040, 24434092, 24446417, 24450057, 90537586, 90537914 |
This AULINK M349 oil pump is a direct replacement-style mechanical pump intended to restore engine oil pressure and lubrication on compatible Buick Regal 4-cylinder engines. It installs in place of the factory pump and includes the basic installation hardware advertised for a straightforward swap during a timing or top-end service. The listing notes TS16949 production, 100 percent function and leakage testing, and customer feedback reports reliable fit and performance in real-world installs. In practice the pump provides the expected pressure to circulate oil to bearings and valvetrain, and several buyers found it matches factory fitment and performance. Downsides to be aware of are limited long-term warranty coverage and some reports of missing gaskets, so you should confirm gasket and seal availability before installation and use new gaskets or seals as part of a proper rebuild. Expect a cost-effective, factory-replacement style option when you need to replace a failing pump on a Buick Regal.
Best for: Risk-averse mainstream buyers seeking a cost-conscious, factory-style replacement for a Buick Regal oil pump who prioritize straightforward fitment and tested function over premium brand premiums.
Less Ideal for: Those who want extended aftermarket warranties or are rebuilding an engine and prefer OEM-brand parts for guaranteed long-term coverage should consider alternatives.
- Designed as a direct factory-replacement style pump for compatible engines
- 100% function and leakage tested according to the listing
- Includes necessary installation kits for an easier swap
- Positive user reports of fit and performance matching factory units
- Some buyers reported the gasket was not included requiring a separate purchase
- Limited explicit long-term durability data beyond customer reports
Verdict A cost-effective, tested factory-replacement oil pump option for Buick Regal owners who need reliable fit and immediate restoration of oil pressure, but confirm gasket availability before installation.
6. Chefull M349 Engine Oil Pump Replacement (Replace OP314)
| Manufacturer | Chefull |
|---|---|
| Manufacturer Part Number | OP010 |
| OEM Part Number | M-349 |
This Chefull M349 oil pump is a replacement unit designed to restore oil pressure and circulation on compatible GM 2.0L and 2.4L engines, including the Buick Regal 2011–2015 models listed. It installs in place of the factory pump after oil pan removal and is driven by the crankshaft gear like the original design. The listing highlights direct-fit part numbers (OP314, M349) and broad fitment across GM vehicles, which makes it a budget-friendly option for a practical repairer replacing a failed pump. In use it should return normal oil pressure and protect engine bearings when installed correctly and the rest of the oiling system is serviceable. Expect to follow standard shop procedures for pan removal, pickup screen inspection, and torque sequence for mounting bolts. Limitations are typical of aftermarket pumps: you should confirm part number compatibility for your specific Regal engine variant and accept that quality can vary compared with factory-quality components, so professional installation or inspection is recommended if you are unsure.
Best for: Practical optimizers looking to repair a Buick Regal economically while balancing functionality and cost, and who are comfortable verifying part numbers or working with a mechanic to install a replacement pump.
Less Ideal for: Buyers seeking a factory-quality, dealer-sourced unit with guaranteed OEM provenance or those unwilling to confirm exact engine compatibility beforehand.
- Marketed as a direct replacement for known part numbers (OP314, M349) for easier parts matching
- Covers Buick Regal 2.0L and 2.4L model years listed, simplifying purchase for compatible engines
- Lower-cost aftermarket option compared with factory replacements for budget-conscious repairs
- Aftermarket build quality may vary compared with factory-quality pumps
- Requires oil pan removal and moderate mechanical skill or a professional for proper installation
Verdict A cost-conscious direct-replacement oil pump for Buick Regal 2.0L/2.4L engines that can restore oiling function when part numbers match, but accept typical aftermarket variability and plan for professional installation if needed.
7. OWNWEEDA 9-4201S 2.4L Timing Chain Kit with Water and Oil Pump
| Engine fit | 2.4L L4 |
|---|---|
| Includes | Timing chains, guides, tensioners, VVT sprockets, water pump, oil pump, gaskets |
| Manufacturer | OWNWEEDA |
This full 2.4L timing chain kit is designed to replace the factory timing and balance shaft chains plus associated guides, tensioners, VVT sprockets, water pump and oil pump on Buick Regal 2.4L engines. Intended for a comprehensive drive-train service, the kit groups the primary timing chain (148 links), balance shaft chain, crank and balance shaft sprockets, multiple guides and tensioners, variable valve timing solenoids, and gaskets so you can refresh the whole chain drive in one job. For a performance-oriented owner this reduces the risk of mixed-age components causing premature wear after a repair and can restore quiet, accurate timing and VVT operation. The included water and oil pumps and full gasket set simplify reassembly and save time compared with sourcing parts individually. Keep in mind this is an aftermarket kit so fit and finish can vary relative to factory parts and installation requires mechanical experience and proper timing setup to avoid engine damage.
Best for: Performance-oriented owners seeking a single, comprehensive repair that restores timing accuracy and VVT function on a Buick Regal 2.4L, and who value doing a complete service in one visit.
Less Ideal for: Owners who prefer only OEM-sourced parts, or those wanting a simple, low-effort partial repair should consider alternative single-component replacements or dealer service.
- Comprehensive kit replaces timing chain, balance shaft chain, guides, tensioners and VVT sprockets for a full system refresh.
- Includes water pump, oil pump and full timing cover gasket set to reduce parts sourcing and labor repeat work.
- Supplies both variable valve timing solenoids, helping restore correct VVT function and engine performance.
- Single-purchase approach lowers risk of mixing new and old components that can shorten service life.
- Aftermarket components may show variation in fit or finish compared with factory-quality parts.
- Installation is labor-intensive and requires precise timing setup to avoid engine damage.
Verdict A one-stop aftermarket kit that refreshes the entire 2.4L timing chain drive and pumps to restore timing and VVT performance on Buick Regal engines, but requires careful installation and may differ from factory parts.
Choosing the Right Buick Regal Oil Pump: Key Factors to Consider
Flow Rate and Pressure Output
Oil flow rate and pressure determine how effectively the pump circulates lubricant through the engine. Adequate flow at idle and higher engine speeds ensures bearings, camshafts, and valvetrain components receive continuous lubrication.
Underperforming flow can lead to increased wear, while excessive pressure may stress seals or trigger relief mechanisms. Look for pumps with documented flow curves or pressure specifications that match the Buick Regal engine's requirements. Consider how flow varies with RPM and whether the pump maintains usable pressure during hot operating conditions.
Materials and Machining Quality
The materials used for gears, housing, and fasteners affect durability and resistance to wear. Hardened steel gears or precision-machined rotors reduce clearance growth over time and help preserve pumping efficiency.
Tighter machining tolerances limit internal leakage and improve volumetric efficiency. Poor material selection or sloppy machining can accelerate failure, increase metal contamination, and reduce service life. Prioritize pumps with documented material specs and evidence of quality control in manufacturing.
Seal and Gasket Compatibility
A reliable seal between the pump and the oil pan or engine block is essential to prevent leaks and maintain pressure. Compatibility with the correct oil pump gasket seal type for the Buick Regal reduces installation headaches and leak risk.
Consider whether the pump includes the necessary gaskets or if aftermarket seals are required. Proper sealing also affects suction performance at the pickup and can influence cavitation risk. Confirm the mating surfaces match the engine to avoid oil loss and pressure drops.
Pickup Design and Sump Compatibility
The pickup tube and screen must fit the Buick Regal sump geometry and provide consistent oil supply even during cornering or low fuel conditions. A well-designed pickup minimizes air ingestion and maintains steady suction to the pump.
Length, bend geometry, and screen size influence how the pickup clears debris and resists clogging. Verify pickup placement and compatibility with the vehicle's oil pan depth to avoid starvation under dynamic conditions.
Installation and Serviceability
Ease of installation affects labor time and the chance of errors during replacement. Pumps that align with factory mounting points and use standard fasteners simplify oil pump installation for both DIYers and technicians.
Consider access to replacement gaskets, seals, and internal components for future servicing. Pumps designed for straightforward removal and reinstallation reduce downtime and the risk of installation-induced leaks or misalignment.
Compatibility with Engine Modifications
If the Buick Regal has performance modifications, the oil pump should support altered oil demand and operating conditions. High pressure oil pump options or pumps with higher flow capability may be necessary for added power or sustained high RPM operation.
Assess whether the pump's performance profile suits any modifications and whether it requires complementary upgrades, such as baffled pans or stronger relief valves. Selecting a pump aligned with your engine's configuration prevents overworking the component and reduces the chance of premature failure.
FAQ
What are common symptoms of a failing oil pump in a Buick Regal?
Common symptoms often include a drop in oil pressure, warning lights, or louder engine noise that varies with RPM. You may notice oil pressure fluctuating at idle or during acceleration. These signs usually prompt inspection of the pump, pickup, and related sensors.
Can I drive my Buick Regal with low oil pressure?
Driving with persistently low oil pressure is risky because it can accelerate engine wear. Short, cautious trips to reach a repair facility may be possible, but ongoing operation without resolving the issue increases the chance of internal damage. Have the issue diagnosed quickly.
How difficult is oil pump installation on a Buick Regal?
Difficulty depends on engine layout and access to the oil pump area. Some installations are straightforward with basic tools and a lift or jack and stands, while others require removal of ancillary components. Proper gasket seal installation and torqueing fasteners to specification are important for a successful job.
Do oil pump noise and oil pump failure signs always mean the pump must be replaced?
Not always. Noise and other failure signs can stem from low oil level, clogged pickup screens, or external leaks. A diagnosis should include oil level check, inspection of the pickup, and pressure testing before deciding on replacement. Replacement is appropriate when tests indicate inadequate flow or internal pump wear.
Is it better to choose an OEM or aftermarket oil pump for a Buick Regal?
Both OEM and reputable aftermarket options can be suitable. OEM parts typically match factory specifications exactly, while quality aftermarket pumps may offer improved materials or availability. Prioritize documented compatibility, machining quality, and fitment rather than relying solely on the label.
How can I reduce the risk of oil pump problems after installation?
Use the correct gasket seal and follow torque specifications to avoid leaks. Ensure the pickup screen is clean and the sump is free of large debris before installing. Regular oil and filter changes with the proper oil viscosity help keep the pump supplied with clean lubricant and reduce wear.
How We Chose the Best Buick Regal Oil Pump
We focused on components that meet the mechanical demands of the Buick Regal engine and selected pumps that offer reliable oil delivery and durable construction. Key criteria included volumetric flow rate at typical operating RPMs, sustained pressure performance, materials and machining tolerances, and compatibility with the engine's pickup and mounting configuration. We also evaluated internal tolerances that affect longevity, sealing surfaces that influence leak resistance, and whether common replacement gaskets and seals are supported. We excluded pumps that lacked clear technical specifications or did not document compatibility with the Buick Regal engine platform. Units intended only for racing or highly modified engines were not considered unless they also perform well in stock or lightly modified applications. The focus remained on pumps that balance performance, durability, and practical serviceability for everyday use.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing an oil pump for a Buick Regal, prioritize flow and pressure characteristics that match the engine's needs and confirm compatibility with the sump and pickup geometry. Durable materials, tight machining tolerances, and reliable sealing reduce the chance of early failure. Balance serviceability and installation ease against performance requirements, especially if the engine is modified. Addressing oil delivery issues promptly and selecting a pump that meets the technical criteria discussed will help protect the engine and extend service life.
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