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If you own a Buick Regal, choosing the right transmission pan affects cooling performance, service convenience, and long-term transmission health. The wrong pan can lead to poor oil flow, difficult fluid changes, or recurring leaks, so it is important to pick one that matches your vehicle and driving habits. This guide highlights the top shortlisted transmission pans for the Buick Regal, selected for fitment, construction, and service features. We evaluated sealing, drain access, and material durability to help you find a pan that reduces maintenance time and improves reliability. Read on for the criteria we used and what to look for when selecting the right option.
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 | Speedway Motors Black Steel GM TH-350 Transmission Pan with Drain Plug |  |
| Most Popular A crowd favorite that many people choose with confidence | Spectre Performance 5450 Transmission Pan for TH350 |  |
| Best Quality Built to a higher standard if you want something more solid | Dorman Transmission Oil Pan with Drain Plug (265-582) |  |
| Best Budget The cheapest option that still gets the job done reliably | PHILTOP Transmission Oil Pan with Drain Plug (265814) |  |
| Most Sold A high-volume bestseller chosen again and again | A-Premium Transmission Oil Pan Kit with Gasket and Drain Plug |  |
| Best Value for Money The sweet spot between price and what you get | KAX Transmission Oil Pan 265-814 (Replacement with Drain Plug) |  |
| Best Overall The best all-around choice for most situations | Dorman Transmission Oil Pan with Drain Plug and Filter Assembly |  |
1. Speedway Motors Black Steel GM TH-350 Transmission Pan with Drain Plug
| Depth | 2" |
|---|---|
| Material Type | Steel |
| Drain Plug | Yes |
| Transmission Pan Style | Stock Style |
This Speedway Motors transmission pan is a straightforward stamped steel replacement designed for GM TH-350 transmissions. It installs in place of the factory pan to restore a clean seal and adds a convenient pre-installed drain plug that makes fluid changes less messy. The 2-inch depth matches stock capacity so it keeps fluid volume and pickup clearances close to factory behavior, while the painted finish reduces corrosion and gives a tidy undercarriage appearance. Reviewers report a solid gauge and reliable fit, and the stamped GM 350 detail preserves a factory-style look. There are some practical limits: it is a simple stamped pan rather than a deep-sump or baffled performance design, and it does not include a gasket or filter, so plan to reuse or buy those parts separately. For Buick Regal owners running a TH-350 transmission seeking a durable, serviceable factory-style pan, this is an inexpensive, reliable replacement that simplifies maintenance without changing fluid capacity or sump behavior.
Best for: A reliability-focused buyer who prioritizes restoring factory function and simplifying maintenance on a Buick Regal with a TH-350 transmission.
Less Ideal for: Owners seeking increased fluid capacity, enhanced cooling, or a pan with built-in baffling for heavy towing or track use should consider performance-oriented alternatives.
- Factory-style 2-inch depth preserves original fluid capacity and pickup clearance.
- Pre-installed drain plug simplifies fluid changes and reduces mess.
- Painted steel construction resists corrosion and provides a durable finish.
- Stamped GM 350 logo gives a factory-style appearance and fits TH-350 pattern.
- Does not include a gasket or transmission filter so additional parts are required.
- Not a deep-sump or performance pan; no internal baffles or increased capacity for cooling.
Verdict A durable, stock-capacity TH-350 replacement pan that adds a useful drain plug for easier maintenance but does not change performance or fluid capacity.
2. Spectre Performance 5450 Transmission Pan for TH350
| Model | 5450 |
|---|---|
| Exterior | Machined |
| Fits Transmission | GM TH350 |
The Spectre Performance 5450 is a chrome-plated replacement transmission pan built for GM TH350-style transmissions and intended to simplify fluid service. It installs like a direct replacement and adds a threaded drain plug so you can drain fluid without removing the pan, which is handy for routine maintenance. The machined exterior gives a cosmetic upgrade while reviews report generally good fit and sealing when installed with quality gasket/sealant and correct bolt torque. Practical benefits include easier, cleaner fluid changes and a more durable feel than thin stamped pans. Limitations to consider are that fit depends on correct mating surface alignment and careful installation; some users reported gaps or leaks when the pan or transmission flange was not seated properly. Also this is designed specifically for TH350-type transmissions, so ensure compatibility with the transmission in your Buick Regal before buying.
Best for: Convenience-driven buyers who prioritize easier maintenance and cleaner fluid changes on a vehicle equipped with a TH350 transmission and want a simple cosmetic upgrade without complex installation.
Less Ideal for: Owners who need a pan engineered for extra capacity, integrated filters, or a model-specific fitment different from TH350 transmissions should look at alternatives designed for those needs.
- Built-in drain plug makes fluid changes faster and cleaner
- Chrome-plated machined exterior improves undercarriage appearance
- Designed as a direct replacement for GM TH350-style pans for straightforward installation
- Thicker steel construction than very cheap pans reduces risk of leaks and dents
- Requires careful gasket/sealant application and correct bolt torque to avoid leaks
- Compatibility limited to TH350-style transmissions and may not fit all Regal configurations
Verdict A convenient, chrome-plated TH350 replacement pan with a drain plug that makes routine transmission service easier for Regal owners with that transmission type.
3. Dorman Transmission Oil Pan with Drain Plug (265-582)
| Brand | Dorman |
|---|---|
| Model | 265-582 |
| Manufacturer Part Number | 265-582 |
| OEM Part Number | 24222657; 24224781; 24236933; 29535617 |
This Dorman transmission oil pan replaces the factory pan on compatible GM models and brings a built-in drain plug for much cleaner fluid changes. It installs where the original pan sits and is intended for routine service and leak repair; the drain plug means you can perform drain-and-fill maintenance without lowering a fluid-filled pan. Dorman reports vehicle try-on testing and salt-spray checks to help ensure fit and corrosion resistance, and many owners note the supplied gasket and bolt-hole alignment match factory expectations. In practice the pan makes more frequent transmission fluid changes practical and reduces messy spills, though removing the old pan can still be awkward on some vehicles because of surrounding heat shields and exhaust components. The pan is service-oriented rather than performance-enhancing, so expect a near-factory fit and durable service life but no gains in cooling or internal filtration compared with upgraded aftermarket pans.
Best for: Performance-oriented buyers who prioritize driveline longevity and proactive maintenance and want an easy way to perform more frequent transmission fluid changes without a major teardown.
Less Ideal for: Buyers seeking a performance-oriented pan with enhanced cooling, increased fluid capacity, or internal baffling should consider dedicated performance pans instead of this service-focused replacement.
- Integrated drain plug for clean, convenient drain-and-fill service without dropping the pan full of fluid
- Designed to match factory fit and bolt pattern for straightforward installation on compatible GM transmissions
- Includes a rubber gasket with metal-reinforced holes for reliable sealing when torqued to spec
- Tested for fit and corrosion resistance to provide long-term leak protection
- Well-documented compatibility list for confirming vehicle fitment before purchase
- Does not add transmission cooling or improved internal baffling compared with performance pans
- Installation can be difficult on some vehicles due to nearby heat shields and exhaust routing
- Not a performance upgrade; it only restores or slightly improves serviceability
Verdict A factory-quality replacement pan that adds a drain plug to make maintenance cleaner and more frequent, but it is not a performance cooling upgrade.
4. PHILTOP Transmission Oil Pan with Drain Plug (265814)
| Brand | PHILTOP |
|---|---|
| Model | Transmission oil pan |
| Manufacturer Part Number | 6519TOP023PUS |
| Reference Numbers | 24206181, 24210461, 265814, 103138, 12820331, 6351072 |
This PHILTOP transmission oil pan is a straightforward replacement designed to match factory mounting and drain requirements for compatible GM transmissions. It installs in place of a worn or damaged pan to restore a proper seal and provide a serviceable drain plug for easier fluid changes. The pan is described as machined and heavy-duty, which helps resist corrosion and warping under normal operating temperatures, and customers report accurate fitment when matched to the listed reference numbers. The package does not include a gasket or internal magnet, so you will need to reuse or buy a new gasket and consider adding a magnet if you want metal particle collection. Use the fitment guide carefully because the product covers many model years and some modern variants with different sump shapes will not fit. For a budget-focused repair this pan gives factory-style function at a low cost, but expect minor additional purchases and verification before install.
Best for: Practical, budget-conscious buyers who prioritize a low-cost, factory-style replacement to get a Buick Regal back on the road without paying dealer prices.
Less Ideal for: Owners looking for a complete overhaul kit or enhanced performance features such as integrated filters, magnetic sump, or bespoke deep-sump pans should consider higher-end alternatives.
- Direct replacement design intended to match factory mounting and drain layout
- Machined exterior and heavy-duty construction for corrosion and wear resistance
- Includes a drain plug to simplify transmission fluid changes
- Low-cost option compared with dealer panels
- Gasket is not included so a separate seal purchase or reuse is required
- No internal magnet included to capture metal particles
Verdict A cost-effective, factory-style replacement pan that restores drainability and fitment for compatible Buick Regal transmissions but requires a separate gasket and lacks an internal magnet.
5. A-Premium Transmission Oil Pan Kit with Gasket and Drain Plug
| Fit Type | Vehicle Specific |
|---|---|
| Transmission Type | 8-Speed Automatic |
| Material | Plastic |
| Mounting Hole Diameter | 8 mm |
This transmission oil pan kit replaces the factory pan on compatible 8-speed automatic transmissions and is supplied as a complete service kit with a built-in filter, gasket, drain plug and mounting bolts. It is typically used during a transmission service or pan replacement to address leaks, low fluid level, or to refresh the internal filter without removing the entire transmission. The pan is plastic with corrosion-resistant finish and arrives with hardware and a preformed gasket to simplify installation. Buyers report accurate fit and a leak-free seal when installation follows the recommended torque sequence and careful surface cleaning. Expect easier DIY service compared with sourcing individual parts, and the included filter and magnets capture wear particles to help protect the transmission. Limitations are that the gasket quality and bolt heads differ from factory pieces in some cases and a few users noted missing or stripped bolts, so inspect the kit before installation and set aside time for tight clearances during fitment.
Best for: Risk-averse mainstream buyers who prioritize a straightforward, complete replacement kit for routine transmission maintenance and avoiding dealership service costs.
Less Ideal for: Shoppers wanting a heavy-duty or high-capacity aftermarket pan for performance or off-road use should consider purpose-built metal pans instead.
- Complete kit includes pan, built-in filter, gasket, drain plug and mounting bolts for one-stop replacement
- Preinstalled filter and magnets help catch metal debris and reduce contamination risk
- Vehicle-specific fit claims mean faster installation and fewer fitment surprises
- Plastic construction differs from metal OEM pans which may hold more fluid or offer greater impact resistance
- Some kits have inconsistent bolt quality and fewer magnets than original in rare cases
Verdict A convenient, all-in-one replacement pan kit that makes routine transmission service easier for conservative owners, but it is not a heavy-duty performance upgrade.
6. KAX Transmission Oil Pan 265-814 (Replacement with Drain Plug)
| Compatible transmissions | 4T60-E, 4T65-E |
|---|---|
| Included parts | Transmission oil pan with drain plug |
| Exterior | Machined |
| Manufacturer | KAX |
This KAX transmission oil pan is a direct replacement designed for 4T60-E and 4T65-E transmissions used in some Buick models including the Regal. It replaces a worn or leaking factory pan and adds a built-in drain plug to simplify fluid changes and reduce mess. The pan is machined and described as thicker than stock, which helps resist dents and corrosion and should hold up under normal driving conditions. Installation is a standard drop-in job for anyone comfortable with basic drivetrain service; gasket and filter considerations remain necessary because the kit does not include a gasket. Buyers will appreciate the drain port for easier fluid changes and the pan's advertised factory-quality fit; several user reports note accurate fitment and leak-free performance. Limitations are that you must confirm part number compatibility with your Regal before buying and source a gasket separately, and long-term corrosion resistance depends on local conditions and proper installation. For a practical owner looking to repair a leaky or damaged pan without paying dealer prices, this offers straightforward value.
Best for: A practical optimizer who wants a cost-effective, factory-quality replacement for a leaking or damaged transmission pan on a Buick Regal and values easier fluid changes and straightforward repairs.
Less Ideal for: Owners who prefer complete kits with gasket and hardware included or who want a lifetime corrosion warranty should consider options that bundle those items or offer extended guarantees.
- Designed for 4T60-E/4T65-E transmissions used in Buick vehicles including Regal
- Integrated drain plug simplifies transmission fluid changes
- Machined, thicker construction intended to resist impact and corrosion
- Multiple user reports of good fit and no leaks after installation
- Gasket is not included so you must buy one separately
- Manufacturer fitment still requires verifying part number for your specific Regal year
Verdict A budget-friendly, factory-quality replacement pan for Buick Regal transmissions that adds a convenient drain plug but requires you to source a gasket separately.
7. Dorman Transmission Oil Pan with Drain Plug and Filter Assembly
| Material | Steel |
|---|---|
| Includes | Filter assembly, gasket, integrated magnet |
| Finish | E-coat |
| Bolt Pattern (Number of Holes) | 16 |
This Dorman transmission oil pan replaces the factory pan on compatible GM models and is built to simplify routine transmission service. It is made from stamped steel with an E-coat finish to resist corrosion and includes a drain plug so you can remove fluid before lowering the pan, which keeps the work area much cleaner. The kit arrives with a filter assembly, gasket and integrated magnet so you can complete a filter service in one visit. Fitment is generally good for affected Buick Regal transmissions but some owners report needing to remove or modify nearby brackets or the dipstick stop for clearance, so expect minor trimming or bracket disassembly in tight installations. The pan is a practical choice for owners who want a durable, serviceable replacement without changing transmission geometry, though careful fit verification and the correct filter/gasket selection are important to avoid surprises during installation.
Best for: A balanced all-round buyer who wants a durable, serviceable factory-quality replacement that reduces mess and simplifies transmission fluid and filter changes.
Less Ideal for: If you need a guaranteed bolt‑in, zero-modification direct swap or a lightweight aluminum aftermarket pan, consider alternatives designed for exact-fit or performance upgrades.
- Integrated drain plug lets you drain transmission fluid before removing the pan to avoid spills
- Includes filter assembly, gasket and magnet for a complete service kit
- E-coat finish and steel construction improve corrosion and impact resistance
- Designed to match factory performance while adding service convenience
- May require removal or minor modification of nearby brackets or dipstick stops for fit on some vehicles
- Does not include vehicle-specific fit verification beyond general compatibility; confirm fit before installation
Verdict A practical, service-focused steel replacement pan for Buick Regal transmissions that adds a drain plug and filter kit but may need minor installation adjustments.
Choosing the Right Buick Regal Transmission Pan: Key Factors to Consider
Fitment and Bolt Pattern
A correct bolt pattern and precise fitment are essential to prevent leaks and ensure straightforward installation. Mismatched mounting holes or uneven flange surfaces can warp the pan or stress the gasket, which leads to recurring seepage.
Check that the pan is designed for the Buick Regal transmission variant you have, including any variations tied to engine or drivetrain options. Proper fitment minimizes the need for modifications and reduces the risk of transmission service interruptions.
Material and Corrosion Resistance
Pan material affects how well it resists corrosion, conducts heat, and holds up to road debris. Steel pans are durable and cost-effective but need good coatings to resist rust. Aluminum pans dissipate heat faster and can be lighter, though they may be more vulnerable to impact damage in some situations.
Consider the typical environment where you drive. If you encounter salted roads or frequent moisture, a pan with robust coatings or corrosion-resistant alloy will prolong service life and reduce the chance of leaks from degraded material.
Gasket and Sealing Design
A well-designed gasket and sealing surface are key to preventing transmission pan leaks. Look for pans with continuous sealing flanges and gaskets that resist deformation under heat and pressure. Some designs use molded or integrated seals that compress uniformly, reducing the risk of seepage after installation.
The sealing approach also affects replacement intervals and maintenance ease. A pan that uses a reusable gasket or a robust molded seal will often make future servicing simpler and less messy.
Drain and Service Features
Drain plugs and service-friendly features make fluid changes less messy and faster. A pan with a built-in drain plug allows partial fluid removal without dropping the entire pan, which saves time and reduces fluid loss. Some pans include magnetic drain plugs or accessible fluid-sampling points to aid routine checks.
If you plan to perform periodic transmission fluid changes yourself, prioritize pans that simplify the process. Even small conveniences can reduce labor and the chance of contamination during service.
Capacity and Thermal Performance
Pan capacity can influence fluid volume and cooling ability. A deeper or higher-capacity pan increases fluid volume, which can help buffer heat and maintain more stable transmission temperatures during heavy use. Likewise, materials with better thermal conductivity assist in shedding heat away from the transmission.
Consider how you use the vehicle. If you tow, carry heavy loads, or drive aggressively, a pan that enhances cooling and fluid capacity can help protect internal components and extend service life.
Durability and Impact Resistance
Durability matters for pans exposed to road debris, curbs, or off-road conditions. Thicker materials, reinforced ribs, and robust finishes reduce the chance of dents or punctures that could lead to leaks. Impact resistance is particularly important if the pan sits lower on the vehicle or if you encounter rough roads frequently.
Assess the pan's construction details and protective coatings as part of longevity planning. A more robust pan can prevent costly repairs and reduce the likelihood of transmission fluid loss after a minor impact.
FAQ
How do I know which transmission pan fits my Buick Regal?
Check your vehicle's year and transmission variant and confirm the pan's listed fitment for that specific Buick Regal model. Fitment listings that include bolt pattern details and transmission codes are the most reliable indicators. If in doubt, consult a service manual or a qualified technician to match the pan to your transmission.
Can I replace the transmission pan gasket myself?
Replacing the gasket is a common DIY task for people comfortable with basic automotive work. It usually requires draining fluid, removing the pan, cleaning the sealing surface thoroughly, and installing a new gasket with correct torque on the bolts. Work carefully to avoid contaminating the fluid or overtightening the fasteners.
Will a pan with a drain plug prevent transmission pan leaks?
A drain plug adds service convenience but does not guarantee against leaks. Leak prevention depends on proper gasket sealing and correct installation torque. High-quality drain plugs with robust sealing threads reduce the chance of seepage, but the overall gasket and flange integrity remain the primary leak control factors.
How often should I remove the transmission pan for fluid maintenance?
Frequency depends on your driving conditions and manufacturer recommendations. Many technicians inspect the pan and filter during scheduled fluid changes or if you notice shifting issues or fluid contamination. For normal driving, periodic inspection during routine service intervals is usually sufficient.
Do aftermarket transmission pans change transmission torque specifications?
Aftermarket pans do not change the transmission bolt torque specs themselves, but installation requires following the correct torque sequence and values to ensure a proper seal. Always refer to the vehicle's service documentation for the correct torque specs when installing any pan to avoid warping the flange or damaging the gasket.
Can a damaged transmission pan cause transmission problems?
Yes, a dented or punctured pan can lead to fluid loss or internal contamination, which may cause overheating or shifting issues if not addressed. Minor damage that compromises the seal or allows debris into the fluid should be repaired or the pan replaced to maintain reliable transmission operation.
How We Chose the Best Buick Regal Transmission Pan
We focused on products that specifically fit the Buick Regal and meet practical service and durability needs. Key evaluation criteria included material and construction quality to assess corrosion resistance and heat dissipation; bolt pattern and fitment accuracy to ensure leak-free installation; drain or service features that make fluid changes easier; and gasket and sealing design to reduce the chance of transmission pan leaks. We also considered manufacturing tolerances and finish to evaluate long-term reliability, plus compatibility with common transmission fluid change procedures. Items were excluded if they lacked a clear fitment specification for the Buick Regal, used questionable materials, or omitted essential sealing details. Our goal was to shortlist pans that balance dependable sealing, ease of service, and durable construction for real-world use.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right Buick Regal transmission pan means balancing fitment accuracy, sealing reliability, and service convenience. Prioritize pans that match your transmission bolt pattern, use durable materials, and offer robust gasket solutions to minimize leaks and maintenance hassle. Also consider service features like drain plugs and increased capacity if you perform frequent fluid changes or subject the vehicle to heavy use. Focusing on these factors will help you select a pan that supports long-term transmission health and easier servicing.
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