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If you own a Mazda Mazda6, the oil filter housing is a small but critical component that affects engine cleanliness, oil pressure, and leak prevention. Choosing the right oil filter housing helps ensure reliable sealing, correct oil flow, and straightforward maintenance for routine oil changes. This guide narrows the field to seven shortlisted oil filter housings for the Mazda Mazda6 that meet common service needs and durability expectations. We evaluated each option for fitment accuracy, material longevity, and sealing performance. Read on to see the selection criteria and what matters most when replacing this part.
Looking for other parts? See all Mazda Mazda6 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | GROBARPART Oil Filter Housing Cover Cap Assembly (replacement for 917-004) |  |
| Most Popular A crowd favorite that many people choose with confidence | A-Premium Oil Filter Housing Cap Assembly |  |
| Best Quality Built to a higher standard if you want something more solid | Toyota Oil Filter Housing Cap and Drain Plug (15620-31060 / 15643-31050) |  |
| Best Budget The cheapest option that still gets the job done reliably | X AUTOHAUX Oil Filter Cap Assembly (for Mazda 6 CX-7 Tribute) |  |
| Most Sold A high-volume bestseller chosen again and again | GROBARPART Oil Filter Housing Cap Assembly |  |
| Best Value for Money The sweet spot between price and what you get | Yinlowa Aluminum Oil Filter Housing Cap Assembly with Oil Plug (15620-31060) |  |
| Best Overall The best all-around choice for most situations | Pilida Aluminum Oil Filter Housing Cap Assembly Kit with Drain Plug |  |
1. GROBARPART Oil Filter Housing Cover Cap Assembly (replacement for 917-004)
| Material | Alloy Steel, Metal |
|---|---|
| Exterior Finish | Stainless Steel |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer Part Number | YK-SL-011 |
This GROBARPART oil filter housing cover cap is a direct replacement-style component intended to replace the original 917-004 housing cap on compatible four-cylinder Mazda engines. In practice it installs in the same location as the factory cover and is used during oil filter changes to seal the filter housing and keep oil contained. The part is metal with a stainless-like finish, which buyers report feels more robust than brittle plastic housings on older cars. That construction reduces the risk of cracking when hand-tightening or using a wrench for removal. It comes as a single cap assembly and is sold as a vehicle-specific fit, so installation is straightforward when the year and engine match. Important limitations are that fitment must be verified for your Mazda6 year and engine before ordering and the listing includes multiple cross-references rather than one Mazda-only part number, so confirm compatibility; the part also lacks detailed OEM certification information. For a reliability-focused repair this cap offers a stronger, economy-minded replacement but check exact model fitment first.
Best for: Reliability-focused owners who prioritize a sturdy, repair-focused replacement over cosmetic upgrades and want a straightforward fix that reduces the chance of future cracking during oil service.
Less Ideal for: Drivers seeking an OEM-branded cover with manufacturer certification or those who prefer an exact factory part number specific to a single Mazda6 model should consider dealer-sourced replacements instead.
- Metal alloy construction that feels more durable than brittle plastic covers
- Listed to replace common 917-004 part numbers for direct-fit replacement
- Simple vehicle-specific fit simplifies installation during routine oil changes
- Stainless-type exterior finish resists corrosion in the engine bay
- Compatibility is spread across many models and requires careful year/engine verification
- No explicit factory certification or manufacturer part cross-reference for Mazda6 only
Verdict A durable, metal replacement cap aimed at reliability-minded owners, but verify exact Mazda6 year and engine fitment before buying.
2. A-Premium Oil Filter Housing Cap Assembly
| Automotive Fit Type | Vehicle Specific Fit |
|---|---|
| Closure Type | Twist-On |
| Material Type | Plastic |
| Compatible with Vehicle Type | Car |
This oil filter housing cap assembly replaces the threaded cap and includes a replacement O-ring for sealing the oil filter housing. It is designed as a direct-fit, factory-style replacement intended to restore the housing's sealability and appearance after the original cap cracks or the seal fails. Typical use is a routine repair during an oil service or when a stripped or leaking cap is discovered; installation is twist-on and generally straightforward without special tools. The unit is molded plastic and the listing emphasizes OE-spec fit and a one-year parts guarantee. In practice this delivers a low-cost way to fix leaks and avoid more extensive housing replacement. Reported limitations include occasional fitment variation and sizing differences versus factory caps, so some buyers needed to return the part or used only the O-ring and plug. Expect a budget-oriented plastic cap that works well when it matches the vehicle but can cause fit headaches if the dimensions differ from the factory piece.
Best for: Convenience-driven DIYers who prioritize quick, straightforward repairs and want a ready-to-install replacement cap to stop leaks without a trip to the dealer.
Less Ideal for: Those seeking a heavy-duty or long-term upgrade should consider metal or OEM direct-sourced housings instead, and professional shops replacing multiple components may prefer a different part.
- Includes replacement O-ring for a complete seal repair
- Twist-on closure simplifies installation without special tools
- Designed to mirror factory appearance for a near-OEM look
- One-year parts guarantee gives basic post-purchase protection
- Made from plastic which may feel less durable than metal alternatives
- Some buyers report inconsistent fitment and thread diameter variation
Verdict A budget-friendly, ready-to-install replacement cap that fixes leaks quickly when the fit matches the vehicle, but verify fit carefully before installation.
3. Toyota Oil Filter Housing Cap and Drain Plug (15620-31060 / 15643-31050)
| Brand | Toyota |
|---|---|
| Material | Stainless Steel |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer Part Number | 15620-31060, 15643-31050 |
This replacement housing cap and drain plug are the factory-quality metal components Toyota supplies for the oil filter housing assembly. In practice you install the cap over the cartridge filter and torque it to the specified value, then use the drain plug to perform controlled oil changes without removing the entire housing. The machined stainless finish and genuine part numbers mean fit and sealing surfaces match factory tolerances, so the drain port seals reliably when installed and you avoid the cracking concerns associated with plastic housings. People report easy installation with correct torque sequence for cap and plug and straightforward use during routine oil service. Important limitations are fitment differences between vehicle variants and the fact this listing is the cap and plug hardware only, not a filter element; confirm the housing internals match your car before ordering. Packaging in transit may be minimal, so inspect the part on arrival for any shipping damage.
Best for: Performance-oriented buyers who want a durable, factory-quality metal housing to replace brittle plastic parts and prioritize long-term reliability during heavier use.
Less Ideal for: If you prefer an all-in-one filter kit that includes the filter element or need guaranteed fitment for a different vehicle variant, consider other options or verify factory part numbers first.
- Genuine factory-quality replacement that matches original mating surfaces
- Machined stainless construction reduces risk of cracking compared with plastic housings
- Includes the drain plug for easier, cleaner oil changes
- Fits vehicle-specific configurations when the part numbers match OEM references
- Listing provides cap and plug hardware only and does not include the filter element
- Some buyers reported fitment mismatch on certain vehicle variants so verification is needed before installation
Verdict Choose this genuine metal cap and plug when you want a factory-quality, long-lasting replacement to avoid plastic housing failures, but confirm fit for your specific Mazda Mazda6 variant before buying.
4. X AUTOHAUX Oil Filter Cap Assembly (for Mazda 6 CX-7 Tribute)
| Fitment | Mazda 6 2006-2008, Mazda CX-7 2007-2012, Mazda Tribute 2005-2006 |
|---|---|
| Thread Outer Diameter | M84X3.0 |
| Material | Plastic, Metal |
| OE Number | 1S7G-6A832-BB, 1S7G-6A832-BA |
This X AUTOHAUX oil filter cap assembly replaces the factory cap on compatible Mazda vehicles and secures the cartridge-style oil filter in the housing. It is a simple, single-piece replacement made from plastic with metal components where needed and installs in the same location as the original cap. Typical use is during an oil service or when the original cap is cracked or leaking; the cap threads onto the housing (M84x3.0 thread) and includes the outer sealing surface required to stop leaks. The practical benefits are straightforward: it is inexpensive, reportedly durable compared with brittle original caps, and many buyers report an immediate fix to oil seepage. Limitations are that this is a non-OEM part with a noted slight dimensional difference from the factory part, so careful fit check is advised before installation; longevity versus a higher-end replacement may vary and fitment is specific to the listed Mazda models. Expect a cost-effective, no-frills replacement for routine maintenance rather than a performance upgrade.
Best for: Budget-conscious Mazda owners who prioritize inexpensive, practical fixes during routine oil service and prefer a cost-effective replacement over dealer parts.
Less Ideal for: Owners seeking a factory-specified OEM part or those who prefer premium aftermarket components with documented warranties should consider other options.
- Direct replacement designed for Mazda cartridge-style oil filter housings
- Inexpensive option that resolves common oil cap leaks
- Improved plastic formulation claimed to be less prone to cracking than older caps
- Non-OEM part so minor dimensional differences from factory caps are possible
- No listed warranty or guaranteed longevity information
Verdict A low-cost, practical replacement cap for Mazda cartridge-style oil filter housings that fixes leaks quickly but is a non-OEM part with slight fitment caveats.
5. GROBARPART Oil Filter Housing Cap Assembly
| Closure Type | Twist-On |
|---|---|
| Material Type | Plastic |
| Included Components | Comes with housing |
This GROBARPART oil filter housing cap assembly is a direct replacement component that secures the cartridge-style oil filter and maintains the engine's lubrication loop. It is used during oil service when the housing cap is removed to change the filter; swapping the cap at the same time as the filter helps ensure a tight seal and prevents leaks. The unit is plastic with a twist-on closure and includes the housing cap and a plug so you have the main service parts in one purchase. Practical benefits include a factory-style fit for compatible engines, a low-cost spare for routine maintenance, and compatibility information listed for a range of vehicles. Limitations are that the listing centers on specific Toyota, Lexus, Scion, and Pontiac applications so fit and thread pitch must be confirmed for any other vehicle, and a plastic cap can be more vulnerable to over-torquing than heavier metal alternatives. Keep a proper filter housing socket and moderate torque when installing to avoid damage.
Best for: A risk-averse mainstream buyer who prioritizes reliability and prefers keeping a factory-quality spare on hand for routine maintenance and unexpected housing failures.
Less Ideal for: Drivers who need a heavy-duty metal housing cap for high-torque service environments or those unwilling to verify thread compatibility for their vehicle should look elsewhere.
- Provides a full housing cap and plug so you can replace the parts during a routine oil change
- Twist-on closure compatible with cartridge-style oil filter housings for straightforward installation
- Low-cost aftermarket replacement that matches factory-style function for many vehicles
- Material is plastic which can be more susceptible to cracking if over-tightened
- Fitment details focus on other makes so you must verify compatibility with your vehicle before buying
Verdict An inexpensive, factory-style plastic replacement housing cap and plug that works well as a service spare if you confirm fitment and avoid over-torquing.
6. Yinlowa Aluminum Oil Filter Housing Cap Assembly with Oil Plug (15620-31060)
| Material | Aluminum |
|---|---|
| Product Grade | Replacement Part |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Part Number | 15620-31060 / 1562031060 / 15643-31050 / 1564331050 |
This aluminum oil filter housing cap assembly replaces the common plastic cap and includes the drain plug and gasket for a single, direct-replacement installation. It is designed to screw into the filter housing by hand and be tightened with a wrench for a leak-free seal, and the metal construction resists cracking and deformation that can occur with stock plastic parts. Typical use is during routine oil service or when the factory cap is damaged; the kit simplifies DIY oil changes by providing a more durable component that is easier to remove and reinstall. Buyers report a snug fit and improved longevity under towing or high-temperature conditions, though one user noted the internal shaft and filter length differed slightly from an original part even while the assembly functioned. The product is vehicle-specific fitment and comes with an o-ring to help ensure a proper seal, but it is not a genuine factory part so exact OEM dimensional parity may vary. Expect a straightforward swap and a tangible durability upgrade compared with factory plastic caps.
Best for: Practical optimizers who want a low-cost, durable upgrade that reduces future maintenance hassle and makes oil changes easier to perform themselves.
Less Ideal for: Users who require guaranteed exact factory original dimensions or prefer only manufacturer-branded replacement parts should consider alternatives.
- Aluminum construction reduces risk of cracking and warping compared with factory plastic caps.
- Includes drain plug and gasket for a complete replacement during an oil service.
- Vehicle-specific design aims for direct fit and simple hand-screw installation.
- Reported to hold up under towing and higher operating temperatures better than plastic alternatives.
- Not an actual factory part so dimensions and internal components can differ slightly from original assemblies.
Verdict A budget-friendly metal upgrade to fragile plastic filter caps that simplifies oil changes and improves durability, but it is an aftermarket part rather than a factory-original component.
7. Pilida Aluminum Oil Filter Housing Cap Assembly Kit with Drain Plug
| Material | Aluminum |
|---|---|
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Part Number | 15620-31060 15643-31050 |
| Manufacturer Part Number | PA-10706071 |
This Pilida kit replaces a factory oil filter housing cap with a billet-style aluminum assembly and bundled accessories for routine oil changes. It comes with O-rings, a drain plug, a short replacement filter, a black filter wrench, and support tubes so you can swap the housing during a maintenance service. The aluminum construction provides greater rigidity and resistance to cracking compared with plastic housings, and reviewers report straightforward installation using the same removal tool as the factory cap. In practice this is used when the original cap is stripped, cracked, or when owners want a more durable upgrade. The included drain plug and O-rings simplify refitting and reduce parts hunting during an oil change. Limitations to note are the generic filter included, which some drivers prefer to replace with a known-brand filter, and customers have reported needing to transfer the factory support spring or tube for exact fitment in some installations. If precise factory-fit components are required, plan to reuse certain original internal parts during installation.
Best for: Balanced buyers who prioritize a durable, practical upgrade to a factory housing and want a complete kit that makes DIY oil changes easier.
Less Ideal for: Buyers seeking an exact factory-spec replacement without reusing any original internal parts or those who insist on OEM-branded filters straight from the box.
- Aluminum construction is stronger and less likely to crack than plastic housings.
- Includes drain plug, O-rings, and a filter wrench so you have the basic hardware for installation.
- Packaged as a complete kit to simplify replacing a damaged housing during an oil change.
- Multiple reviewers confirm good fit and reliable sealing after installation.
- Included replacement filter may not match OEM filter quality or brand preferences.
Verdict A durable aluminum replacement housing kit that simplifies repairs and upgrades, but plan to reuse or swap internal filter components for exact OEM-level fit and filtration.
Choosing the Right Mazda Mazda6 Oil Filter Housing: Key Factors to Consider
Fitment and Compatibility
Correct fitment is essential because small misalignments can cause leaks, improper oil flow, or difficulty during installation. Verify that bolt patterns, hose ports, and filter interface dimensions match the Mazda Mazda6 engine’s requirements so the housing seats flush and the filter threads engage properly.
Compatibility also affects long-term reliability. A housing that matches OEM mounting and sealing surfaces reduces the chance of stress points that lead to cracking. When fitment is precise, you are less likely to need additional adapters or gaskets during installation.
Material and Durability
The housing material determines how well it withstands thermal cycling and engine vibrations. Opt for housings made from robust metals or high-grade engineered polymers designed to resist warping and cracking under repeated heat exposure.
Durable materials help limit the need for premature replacements and reduce the chance of hairline fractures that can cause slow leaks. Consider the expected service life and whether the construction includes reinforcements around high-stress areas like bolt bosses and connection points.
Sealing Surface and Gasket Quality
A reliable seal between the housing and engine block, and between the housing and the oil filter or cartridge, is crucial to prevent oil filter housing leaks. Examine the design of the sealing surfaces and whether the housing includes or properly accommodates a high-quality gasket or O-ring.
Gasket compression characteristics matter because they determine how well the seal holds up under pressure and temperature changes. A well-designed sealing interface reduces the chance of oil seepage and maintains consistent oil pressure.
Thermal Resistance and Heat Management
The oil filter housing sits in a hot area of the engine bay and must tolerate repeated thermal cycles. Housings with good thermal resistance maintain dimensional stability and sealing effectiveness despite high operating temperatures.
Consider how materials expand and contract with heat. Components that manage thermal stress effectively are less likely to develop leaks or cracking over time, preserving engine oil containment and system reliability.
Serviceability and Installation Ease
A housing that is straightforward to install saves time and reduces the risk of installation errors. Look for housings with accessible fastener locations, clear ports, and compatibility with standard filter types so routine oil changes remain simple.
Serviceability also includes whether replacement gaskets or seals are easy to source and fit. Designs that allow for clean gasket replacement without additional machining or adaptations help ensure proper sealing on reassembly.
Pressure and Flow Characteristics
The housing must support proper oil flow and pressure to the engine’s lubrication system. Internal passages, bypass valves, and filter mounting geometry influence how oil circulates, which affects lubrication performance.
Ensure the housing maintains OEM-like flow characteristics so oil pressure remains stable under varying engine loads. Poorly designed passages can create pressure drops or bypass behavior that compromises lubrication.
FAQ
What are common signs of a failing oil filter housing on a Mazda Mazda6?
Common signs include visible oil pooling or drips beneath the housing, a burning oil smell in the engine bay, or fluctuating oil pressure readings. You might also notice oil on nearby engine components or a deterioration of the gasket material. These symptoms often indicate a compromised seal or a crack in the housing.
Can I replace the oil filter housing myself?
Many owners with basic mechanical skills can replace an oil filter housing, especially if the design offers easy access to fasteners and ports. The job typically requires proper torqueing of bolts, use of new gaskets or O-rings, and careful cleaning of mating surfaces. If you are unsure about torque specs or sealing procedures, consult a repair manual or a professional.
How important is it to use a new gasket or seal when replacing the housing?
Using a new gasket or seal is very important because old seals often lose elasticity and can lead to oil filter housing leaks. New gaskets restore proper compression and surface conformity, reducing the chance of seepage. Even if the old gasket looks intact, replacement is a low-cost step that improves long-term reliability.
What causes oil filter housing cracking?
Cracking usually results from thermal stress, repeated vibration, overtightening of bolts, or inferior material quality. Plastic housings can become brittle over time from heat exposure, while metal housings may develop stress fractures if mounting points experience uneven loads. Proper installation and choosing durable materials help mitigate these risks.
How do I find the correct oil filter housing part number for my Mazda Mazda6?
Check your vehicle’s service manual, parts catalog, or a reliable parts database using your vehicle identification number to identify the exact part number. Confirm fitment by matching mounting points and connector types. If in doubt, consult a dealership parts department or an experienced technician to verify the correct part number.
How We Chose the Best Mazda Mazda6 Oil Filter Housing
To assemble this list we focused on components that meet the service and longevity demands specific to Mazda Mazda6 engines. Key evaluation criteria included material and construction quality to resist cracking and warping under heat, precision fitment to the vehicle’s mounting points to avoid misalignment, and sealing integrity to minimize the risk of oil filter housing leaks. We also considered ease of installation for routine maintenance, compatibility with OEM-style oil filters and seals, and availability of correct replacement gaskets and sealing components. We excluded items that lacked clear vehicle fitment information, had inadequate material specifications, or showed a pattern of reported cracking or leakage in service records. The resulting shortlist emphasizes housings designed to maintain oil pressure, ensure reliable oil filtration, and simplify replacement when needed.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing an oil filter housing for a Mazda Mazda6, prioritize correct fitment, robust materials, and reliable sealing. These factors directly affect leak prevention, oil pressure stability, and ease of future maintenance. Balance durability against serviceability. A well-fitting housing with a quality gasket and stable construction will reduce the risk of cracking and leaks while simplifying routine oil changes.
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