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Replacing a failing oil pump matters because the pump is responsible for circulating oil to vital engine parts, preventing wear and overheating. If you drive a Buick LaCrosse, selecting the right oil pump can help preserve engine life and maintain consistent oil pressure under load. This guide covers our six shortlisted Buick LaCrosse oil pump options and explains the criteria used to evaluate them, including flow performance and durability. Read on to understand what to look for and which features match your maintenance goals.
Looking for other parts? See all Buick LaCrosse parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Bopowo 2.4L Timing Chain Kit with Water Pump, Oil Pump and VVT Solenoids |  |
| Best Quality Built to a higher standard if you want something more solid | HAYIAUTO 2.4L Timing Chain Kit with Water Pump, Oil Pump and Head Gasket Set |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium High Volume Oil Pump with O-Ring |  |
| Most Sold A high-volume bestseller chosen again and again | GDUKOP Timing Chain Kit with Water Pump and VVT for Buick LaCrosse 2.4L |  |
| Best Value for Money The sweet spot between price and what you get | Autodevil Timing Chain Kit with Water and Oil Pump for 3.0L/3.6L Buick LaCrosse |  |
| Best Overall The best all-around choice for most situations | OWNWEEDA 9-4201S 2.4L Timing Chain Kit with Water and Oil Pumps |  |
1. Bopowo 2.4L Timing Chain Kit with Water Pump, Oil Pump and VVT Solenoids
| Brand Name | Bopowo |
|---|---|
| Compatible Engine | 2.4L Buick LaCrosse (listed compatibility) |
| Package Contents | Timing chains, guides, tensioners, VVT solenoids, water pump, oil pump, gaskets |
This Bopowo timing chain kit supplies the core components needed when servicing a 2.4L Buick LaCrosse engine: timing chains and guides, tensioners, VVT (variable valve timing) solenoids, plus a water pump and an oil pump. It is intended for full-timing-system overhauls during a major repair or preventative maintenance job where replacing worn timing components and pumps together reduces repeat labor. The kit lists matching reference numbers for common factory parts and claims factory-quality fit and machining for quiet operation. Practical benefits include receiving almost every timing-related part in one package and updated oil pump and VVT parts that simplify reassembly. Important limitations are that compatibility must be verified against your engine reference numbers before purchase and that a comprehensive kit still requires correct installation and proper timing setup by a competent mechanic; this is not a drop-in safety net for neglected engines. Buyers should expect to pair the kit with routine gaskets, seals, and professional timing verification.
Best for: Reliability-focused owners who prioritize replacing the whole timing system and related pumps at once to avoid repeat labor and maintain long-term engine reliability.
Less Ideal for: Owners looking for a single replacement component or a simple DIY fix; those unsure about exact engine reference numbers should consult a mechanic before buying.
- Complete kit includes timing chains, guides, tensioners, VVT solenoids, water pump and oil pump to cover a full timing system service.
- Lists multiple OEM reference numbers to aid fit verification for Buick 2.4L applications.
- Claims factory-quality machining and high-strength alloy components for durability and quieter operation.
- Includes both oil pump and water pump so you replace parts that commonly fail together during long service intervals.
- Requires careful verification of reference numbers and engine details before ordering to ensure correct fit.
- Installation and accurate timing setup still require professional skill and tools; not a simple DIY for most owners.
Verdict A full, reliability-minded timing-system kit for 2.4L Buick LaCrosse owners who want to replace timing components and both pumps in one job to reduce future failures.
2. HAYIAUTO 2.4L Timing Chain Kit with Water Pump, Oil Pump and Head Gasket Set
| Fitment | 2.4L Ecotec engines (Buick LaCrosse compatibility listed) |
|---|---|
| Includes | Timing chains, guides, tensioners, sprockets, water pump, oil pump, head gasket set |
| Part numbers | 9-4201S, HS26517PT, 12635048, 24461834 |
This HAYIAUTO 2.4L timing chain kit bundles the timing chains, multiple guides, tensioners, sprockets, a water pump, an oil pump and a multi-layer head gasket set into a single package for the 2.4L Ecotec engine. For a performance-minded Buick Lacrosse owner this kit addresses the common weak points on aging 2.4L engines by replacing worn timing components plus the water and oil pumps in one overhaul. The inclusion of MLS head gaskets and head bolts means you can refinish the top end during the same service, and the matched sprockets, actuators and tensioners simplify timing reassembly. Practical benefits are reduced parts sourcing time and consistent component matching that helps restore precise valve timing and oil/water circulation. Important limits are that this is a full service kit requiring professional installation and careful timing calibration after fitment, and compatibility is for 2.4L engines only so verify your Lacrosse engine code before ordering. The kit is comprehensive but adds complexity and cost compared with replacing a single pump or chain component alone.
Best for: Performance-oriented owners focused on restoring tight valve timing and reliable oil circulation in a 2.4L Buick Lacrosse who prefer a single, matched kit for an engine refresh.
Less Ideal for: If you only need a single component like just the oil pump or a simple repair, a full overhaul kit increases parts and labor unnecessarily; budget DIYers seeking the cheapest immediate fix should consider individual parts instead.
- Complete overhaul kit that includes chains, guides, tensioners, sprockets, water pump, oil pump and head gasket set
- MLS head gasket kit and head bolts included for proper top-end sealing during a rebuild
- Matched timing components and actuators reduce the risk of mixing incompatible parts during reassembly
- Requires professional installation and precise timing calibration after assembly
- Covers 2.4L Ecotec engines only so it is not universal across other displacements
Verdict A factory-style, all-in-one timing and pump overhaul for 2.4L Buick LaCrosse engines that restores timing and sealing but requires professional installation and engine-specific verification.
3. A-Premium High Volume Oil Pump with O-Ring
| Compatible vehicles | Buick LaCrosse 2008-2009 V8 5.3L |
|---|---|
| Housing material | Cast Aluminum |
| Oil pump volume type | High Volume |
| Oil pump pressure type | Standard Pressure |
| O-ring | Included |
This A-Premium oil pump is a budget-focused replacement designed for V8 GM engines including the Buick LaCrosse 2008–2009 5.3L. It supplies higher oil volume while retaining standard pressure characteristics, and arrives with an O-ring and four mounting holes for straightforward installation. Typical use is direct swap-in during engine repair or LS-style builds where increased oil flow is desired. The cast aluminum housing keeps weight down and users report easy fit and good performance when the pump is primed before startup. Practical benefits include lower cost than dealer parts and availability of a higher-pressure spring option reported by some installers. Important limitations are mixed quality control: several reviews note failures and leaks, so careful inspection and test for leaks before finishing installation are recommended. Also this is an aftermarket unit rather than a factory replacement, so users who insist on factory-matching tolerances may prefer dealer parts.
Best for: Budget-conscious owners seeking an affordable, higher-volume replacement pump for a Buick LaCrosse V8 who prioritize lower upfront cost and practical performance over factory-exact parts.
Less Ideal for: Owners who require guaranteed factory-matching tolerances, long-term dealer-backed reliability, or who prefer OEM parts for warranty-sensitive restorations should consider dealer replacements instead.
- High-volume design increases oil flow for engines that benefit from added oil supply.
- Includes O-ring and standard mounting pattern for direct-fit installation on compatible GM V8s.
- Cast aluminum housing reduces weight and resists corrosion compared with basic steel housings.
- Lower cost than dealer or name-brand replacements, making it attractive for budget repairs or multiple builds.
- Quality control appears variable with some reports of oil leaks and defective units.
- Aftermarket tolerances may not match factory parts exactly, which can affect long-term reliability for some engines.
Verdict A cost-effective high-volume aftermarket pump for Buick LaCrosse V8s that offers good value but requires careful inspection due to mixed quality reports.
4. GDUKOP Timing Chain Kit with Water Pump and VVT for Buick LaCrosse 2.4L
| Fitment engine | L4 2.4L |
|---|---|
| Includes | Timing chains, balance shaft chain, guides, tensioners, VVT sprockets, VVT solenoids, water pump, oil pump, gaskets |
| Manufacturer | GDUKOP |
This GDUKOP timing chain kit is a full replacement package aimed at restoring timing-system reliability on 2.4L Buick LaCrosse engines. It bundles the primary timing chain, balance shaft chain, multiple guide rails, VVT sprockets and solenoids, tensioners, oil pump, and a water pump with gaskets so you can replace the entire timing assembly in one service. For routine engine repair it reduces the back-and-forth of sourcing parts and helps ensure wear-matched components and correct clearances when installed together. The included water pump and oil pump simplify cooling and oiling system refreshes that often accompany timing work. Limitations are that this is a complete aftermarket kit so fit and longevity depend on careful installation and correct torque procedures, and buyers should verify compatibility with their LaCrosse engine codes before ordering. Professional installation is recommended because the kit requires precise timing setup and specialty tools to avoid engine damage.
Best for: Risk-averse mainstream buyers who prioritize minimizing future failures by replacing the entire timing and pump assembly at once rather than piecemeal repairs, and who prefer a single kit for a scheduled overhaul.
Less Ideal for: Do-it-yourselfers without timing-engine experience or specialty tools and buyers seeking only a single component replacement should consider single-part options or professional service instead.
- Complete kit includes timing chains, guides, tensioners, VVT sprockets and solenoids, oil pump, and water pump so multiple components are replaced at once.
- Saves time sourcing parts by providing matched components intended for a single service interval.
- Includes gaskets and hardware needed for installing the water pump and timing cover, reducing the need for separate purchases.
- Aftermarket kit quality and long-term durability can vary so reliability depends on correct installation and part condition.
- Requires professional tools and mechanical skill to set timing and torque components correctly to avoid engine damage.
Verdict A full, one-stop aftermarket timing and pump kit for Buick LaCrosse 2.4L engines that simplifies a major service but requires correct installation for reliable long-term performance.
5. Autodevil Timing Chain Kit with Water and Oil Pump for 3.0L/3.6L Buick LaCrosse
| Fitment engines | 3.0L and 3.6L |
|---|---|
| Included components | Timing chains, guides, sprockets, tensioners, water pump, oil pump |
| Manufacturer | Autodevil |
| Item model number | Ming-I08J0545 |
This Autodevil timing chain kit bundles the timing chains, guides, sprockets, tensioners and a replacement water and oil pump intended for Buick LaCrosse 3.0L and 3.6L engines. It is sold as an all-in-one top-end refresh to address noisy timing systems, worn guides, or to replace the water pump while the timing cover is down. The kit’s claim of precision engineering to OEM part numbers means parts typically line up at install and reviewers report the set reduces engine noise and restores proper timing. Including the water and oil pump in the same package saves the extra teardown of sourcing separate parts and lowers total repair time and cost. Be aware this is a major, labor-intensive repair that requires correct timing procedures and torque specs; some installers prefer to reuse higher-grade gaskets or swap a known-brand chain or tensioner if they want extra assurance. For a practical buyer focused on value, the kit covers most consumables needed for a top-end service in one purchase but does not remove the need for careful installation and quality control on seals and gaskets.
Best for: A practical optimizer who wants a one-box solution to refresh the LaCrosse front end and avoid part hunting, prioritizing overall cost and convenience over selecting premium-brand subcomponents.
Less Ideal for: If you prefer dealer-level parts only or want to minimize risk by using specific branded chains and tensioners, consider sourcing those components separately or using a factory-quality kit instead.
- Complete package includes timing chains, guides, sprockets, tensioners plus water and oil pump to avoid multiple orders
- Parts designed to match listed OEM part numbers for straightforward fitment on compatible engines
- Reviewers report quieter operation and reliable fit when installed correctly
- Saves time and cost by combining the front timing refresh and pump replacement in one teardown
- Installation is complex and requires correct timing procedure and special tools
- Some buyers prefer to replace gaskets or select name-brand chains/tensioners for extra confidence
Verdict A cost-effective, all-in-one timing chain and pump kit that simplifies a LaCrosse top-end service for buyers who prioritize practical value over sourcing premium branded subparts.
6. OWNWEEDA 9-4201S 2.4L Timing Chain Kit with Water and Oil Pumps
| Fits engine | 2.4L Ecotec L4 |
|---|---|
| Includes | Timing chains, guides, tensioners, VVT sprockets, balance shaft components, water pump, oil pump, gaskets |
| Manufacturer | OWNWEEDA |
| Manufacturer Part Number | 9-4201s |
This kit supplies a full timing chain overhaul for 2.4L Ecotec engines and is intended to replace the factory timing chains, guides, tensioners, VVT sprockets, and balance shaft components while adding a replacement water pump and oil pump. Typical use is a comprehensive engine timing service or preventive overhaul where multiple wear items are replaced together to save labor and ensure correct timing function. Notable inclusions are the center timing chain and balance shaft chain, two VVT sprockets and solenoids, a water pump with gasket, and an oil pump specified by common replacement numbers. The practical benefit is that replacing the entire chain drive and pumps at once reduces the chance of related failures after reassembly and can be more economical than sourcing components separately. Limitations are that compatibility must be verified against the Buick LaCrosse's exact 2.4L engine part numbers and that buyers should expect professional installation and proper timing setup; the kit does not remove the need for careful engine timing verification.
Best for: Balanced owners seeking a single comprehensive repair solution to refresh the timing system and replace pumps at the same time to minimize repeat labor and downtime.
Less Ideal for: Shoppers who only need a single replacement oil pump or who prefer to replace individual components piecemeal should consider buying those parts separately instead of a full kit.
- Comprehensive kit bundles timing chains, guides, tensioners, VVT sprockets and solenoids for a one-stop overhaul
- Includes water pump and oil pump to avoid redoing labor later
- Supplies balance shaft chain and related guides to address a common wear point on 2.4L Ecotec engines
- Claims corrosion and wear resistance for longer service life under normal driving conditions
- Requires careful fitment and part-number crosscheck for Buick LaCrosse 2.4L engines before purchase
- Professional installation and precise timing setup are necessary to avoid engine damage
Verdict A convenient all-in-one timing chain and pump kit for 2.4L Ecotec Buick LaCrosse owners who want to replace the whole system at once to avoid repeat labor.
Choosing the Right Buick LaCrosse Oil Pump: Key Factors to Consider
Flow Rate and Pressure Stability
Oil flow rate and pressure stability determine how effectively the pump circulates oil to bearings and hydraulic components. A pump that maintains steady pressure across idle to high RPM prevents momentary oil starvation that can accelerate wear.
When choosing a pump, look for published flow or pressure curves if available. Consider how driving conditions like highway cruising or towing affect required output, since some pumps are designed to sustain higher pressure at elevated engine speeds.
Material and Build Quality
Materials and machining tolerances affect a pump's lifespan and resistance to wear. Stronger alloys and precision-machined gears or rotors reduce internal clearances that can cause pressure loss over time.
Seals and bushings should be durable and resistant to oil additives and heat. Pumps built with tighter tolerances tend to retain performance longer, which lowers the frequency of future replacements.
Compatibility and Gasket Sealing
Correct fitment to the Buick LaCrosse's mounting surfaces and oil passages is essential to prevent leaks and ensure proper oil routing. A pump that seats cleanly and uses a reliable gasket or seal reduces the chance of external leakage and pressure loss.
Verify that the pump matches OEM sealing contact areas and that replacement gasket kits are available. Proper sealing also simplifies installation and helps maintain consistent oil pressure.
Installation Complexity
Installation difficulty affects labor time and total repair cost. Some pumps require removal of accessories or covers, precise torque sequences, or timing-related steps, increasing the skill and time needed.
Choose a pump with clear installation guidance and compatible hardware where possible. Availability of installation kits, preinstalled seals, or alignment tools can reduce the risk of installation errors and oil leaks.
Durability Under Operating Conditions
Consider how the pump performs under typical operating stresses such as high engine temperature, stop-and-go traffic, or sustained high RPM. A durable design tolerates thermal cycling and contamination without rapid degradation.
Look for designs that manage wear from particulates and maintain performance with normal oil service intervals. Durability directly affects long-term reliability and maintenance frequency.
Serviceability and Parts Availability
Access to replacement gaskets, seals, and mounting hardware makes future servicing easier and less expensive. Pumps that use common or well-documented parts simplify repairs and reduce downtime.
Evaluate how easily the pump can be serviced in the field, whether repair kits are sold separately, and whether routine items like O-rings are available through mainstream suppliers.
FAQ
How do I know if my Buick LaCrosse oil pump is failing?
Symptoms of a failing oil pump often include low or fluctuating oil pressure on the gauge, unusual engine noise, or warning lights related to oil pressure. You may also notice increased engine wear or oil pooling under the vehicle in some cases. These signs usually warrant a pressure test and inspection before replacing the pump.
Can I replace the oil pump myself on a Buick LaCrosse?
Whether you can replace the pump depends on your mechanical experience and the tools required. Some installations are straightforward if you have basic mechanical skills, while others need removal of covers or accessories and careful torqueing of fasteners. Plan for a clean work area, correct seals, and follow a service manual for torque specifications.
What should I check during oil pump installation?
During installation, ensure mating surfaces are clean and free of old gasket material, use the correct gasket or sealant, and torque fasteners to the specified values. Confirm oil passages are not obstructed and prime the oiling system if recommended to avoid dry starts. After installation, monitor pressure and check for leaks during a controlled run-in period.
Does oil pump noise mean immediate failure?
Oil pump noise can indicate worn internal components, cavitation, or inadequate oil level, but it does not always mean imminent failure. Investigate by checking oil level and quality, oil pressure readings, and related components like pickup screens. Addressing underlying causes early can prevent more serious damage.
Are OEM pumps necessary, or are aftermarket pumps acceptable?
Both OEM and well-made aftermarket pumps can perform adequately. The important factors are correct fitment, build quality, and documented performance. Compare specifications like flow and pressure stability rather than relying solely on origin, and ensure any chosen pump matches the vehicle's sealing and mounting requirements.
How We Chose the Best Buick LaCrosse Oil Pump
Our shortlist of six Buick LaCrosse oil pumps was created using criteria focused on real-world durability and performance. We evaluated oil flow capacity and pressure stability to ensure adequate lubrication across engine speeds. Build materials and manufacturing tolerances were reviewed to assess longevity and resistance to wear. Compatibility with factory mounting and gasket sealing surfaces was required to reduce leak risk. Ease of installation and availability of replacement seals and hardware were considered to help minimize labor time. We excluded pumps that lacked clear specifications, showed inconsistent fit data for the Buick LaCrosse, or had insufficient performance documentation. The resulting selection emphasizes reliable flow, robust construction, proper sealing, and straightforward installation for typical service and repair scenarios.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right oil pump for a Buick LaCrosse means balancing reliable flow, durable construction, and proper sealing. Prioritize pumps with documented pressure stability and robust materials to reduce the risk of premature wear and oil starvation. Also consider ease of installation and parts availability, since these affect service time and long-term ownership costs. Focusing on those tradeoffs will help you select a pump that supports engine longevity in everyday driving conditions.
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