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If you drive a GMC Sierra and want to reduce oil vapor and sludge entering the intake, choosing the right oil catch can matters. The right unit helps limit carbon buildup on intake valves and throttle bodies, which can preserve throttle response and reduce maintenance time. This guide shortlists seven top options for GMC Sierra oil catch can installations. We evaluated filtration performance, compatibility with Sierra PCV routing, and installation complexity to highlight practical choices. Read on for an overview of what to look for and how each pick addresses common needs.
Looking for other parts? See all GMC Sierra parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | muge racing 400ml Baffled Aluminum Oil Catch Can Kit with Breather Filter |  |
| Most Popular A crowd favorite that many people choose with confidence | SPEEDWOW 300ml Baffled Oil Catch Can with Hose Kit |  |
| Best Quality Built to a higher standard if you want something more solid | EVIL ENERGY Air Oil Separator Catch Can for Chevy/GMC 5.3L & 6.2L |  |
| Best Budget The cheapest option that still gets the job done reliably | AOCISKA Aluminum Baffled 300ml Oil Catch Can with Hose Kit |  |
| Most Sold A high-volume bestseller chosen again and again | RALZAOTO Oil Catch Can Separator for Chevy/GMC 5.3L & 6.2L |  |
| Best Value for Money The sweet spot between price and what you get | TEMSONE Universal 2-Port 750ml Baffled Aluminum Oil Catch Can with Breather Filter and Drain Valve |  |
| Best Overall The best all-around choice for most situations | EVIL ENERGY 300ml Baffled Oil Catch Can with 5ft NBR Hose Kit |  |
1. muge racing 400ml Baffled Aluminum Oil Catch Can Kit with Breather Filter
| Fit Type | Universal |
|---|---|
| Capacity | 400 ml |
| Material | Aluminum |
| Included hose size | 3/8" |
The muge racing kit is a compact baffled oil catch can designed to capture oil and condensate before vapors re-enter the intake. Installation commonly uses the included adapters, clamps, and a short length of 3/8" hose to connect between the PCV/valve cover and intake plumbing; it can be fitted as a sealed catch can or vented with the supplied breather filter. The 400 ml polished aluminum reservoir and internal baffle cool vapor into liquid for periodic draining, and a built-in dipstick lets you check fluid level without disassembly. Practical benefits include lighter weight and corrosion resistance from the aluminum body and multiple adapter sizes to match common hose diameters. Limitations are the thin, short supply hose and a mounting bracket that some users find awkward, which may require buying better hose or fabricating a bracket for a clean, secure install on a GMC Sierra. Also, the vent option can introduce a vacuum leak in some setups so confirming correct routing is important.
Best for: Reliability-focused buyers who prioritize reducing intake carbon buildup and want a straightforward preventive mod to protect engine longevity on their GMC Sierra.
Less Ideal for: Drivers looking for a plug-and-play, vehicle-specific kit with custom-fit hoses and bracketry or those unwilling to source better hose or fabricate mounts should consider a dedicated Sierra-specific solution.
- Baffled 400 ml reservoir that separates oil and moisture before re-circulation
- Anodized aluminum body offers strength with a polished appearance
- Includes multiple adapter fittings and hose clamps for a range of hose sizes
- Built-in dipstick allows easy fluid level checks without full disassembly
- Supplied hose is thin and short and often needs replacement for reliable service
- Mounting bracket placement may not fit the Sierra firewall or inner fender without modification
Verdict A budget-friendly, reliable baffled catch can that protects the intake on a GMC Sierra but may need better hose and a custom mount for a tidy installation.
2. SPEEDWOW 300ml Baffled Oil Catch Can with Hose Kit
| Fit Type | Universal Fit |
|---|---|
| Fuel Type | Gasoline |
| Manufacturer | SPEEDWOW |
| Model | Reservoirs |
This SPEEDWOW catch can captures oil and moisture from the PCV/CCV flow before it reaches the intake, using an internal baffle and optional filter media to condense blow-by and collect liquid in a removable 300ml reservoir. It is installed inline with the factory crankcase ventilation lines and is intended for routine draining via the removable bottom or suction through the dipstick port. The kit includes NBR 3/8" hose, clamps, mounting brackets, Teflon tape, and a bronze micron filter, so you can fit it into a GMC Sierra engine bay without sourcing extra hoses. Practical benefits include a visible dipstick for quick level checks, a reusable can that screws apart for cleaning, and a compact shape that fits tight spaces. Limitations are that the supplied clamps and bracket may be lightweight compared with heavier-duty hardware and some users report the inlet/outlet markings and filter position can be confusing during install. Also watch for condensation in cold weather which can require more frequent checks to avoid freezing.
Best for: Convenience-minded Sierra owners who want a ready-to-install catch can kit that minimizes parts sourcing and simplifies routine checks and draining.
Less Ideal for: Drivers looking for a heavy-duty, race-spec catch can or a plug-and-play vehicle-specific kit with dedicated GMC Sierra fittings should consider purpose-built alternatives.
- Baffled internal design and optional filter media trap oil and moisture before it reaches the intake
- Removable bottom and dipstick make draining and inspection straightforward
- Includes hoses, clamps, mounting bracket, and Teflon tape so no extra parts are normally required
- NBR 3/8" hose provided for good oil and heat resistance suitable for engine bay routing
- Included hose clamps and mounting bracket are lightweight and some buyers replace them with stronger hardware
- Inlet and outlet markings and arrow indicators can be misleading which may cause installation errors
Verdict A convenient, compact catch can kit that supplies most mounting hardware and simple maintenance features, best for Sierra owners who want an easy, budget-friendly upgrade rather than a race-focused solution.
3. EVIL ENERGY Air Oil Separator Catch Can for Chevy/GMC 5.3L & 6.2L
| Fitment | 2014-2018 Chevy Silverado 1500, 2014-2018 GMC Sierra 1500, 2015-2020 Tahoe/Suburban/Yukon, 2015-2019 Escalade |
|---|---|
| Compatible engines | 5.3L and 6.2L V8 |
| Filter type | Fine mesh aluminum |
| Included | Hoses, custom brackets and fittings, installation instructions |
This EVIL ENERGY air oil separator is a direct-fit catch can for 5.3L and 6.2L GM trucks intended to reduce crankcase vapors entering the intake. It installs using the supplied hoses, custom bracket, and fittings and is typically mounted on the PCV side where it intercepts oil mist before it reaches the intake tract. The unit uses a fine mesh aluminum filter to condense and collect oil vapor into the reservoir, helping maintain cleaner intake passages and potentially reducing detonation and intake deposits on higher-output engines. Practical benefits include a mostly plug-and-play fitment for compatible Silverados, Sierras, Tahoes, Yukons, Suburbans, and Escalades and a compact, milled appearance with prelubed O-ring seals. Limitations to note are the small reservoir that requires frequent checks, plastic hose fittings that some owners have replaced for longevity, and the need to verify hose routing on certain engines to avoid vacuum noise or misconnection. For a performance-focused owner this unit offers solid contamination control at a modest size and price point.
Best for: Performance-oriented owners who prioritize cleaner intake charge and reduced detonation risk on modified or high-mileage GM 5.3L and 6.2L engines and want a mostly plug-and-play solution.
Less Ideal for: Buyers seeking a large-capacity or maintenance-free separator or those who prefer factory-sourced parts and full OEM documentation should consider other options.
- Direct-fit kit for GM 5.3L and 6.2L trucks with supplied hoses, bracket, and fittings
- Fine mesh aluminum filter captures oil vapor to reduce intake deposits
- Preinstalled O-ring gasket and mounting bracket simplify installation
- Compact milled can looks factory-quality under the hood
- Small reservoir requires frequent draining and monitoring
- Plastic hose fittings may degrade from engine heat and could need upgrading
- Some users report limited documentation on correct hose routing
Verdict A performance-oriented, direct-fit catch can that effectively traps oil vapor on GM 5.3L/6.2L trucks but needs regular servicing and occasional hose upgrades.
4. AOCISKA Aluminum Baffled 300ml Oil Catch Can with Hose Kit
| Capacity | 300 Milliliters |
|---|---|
| Fit Type | Universal |
| Fuel Type | Petroleum |
| Product Grade | like new |
This AOCISKA oil catch can is a compact, budget-friendly catch can kit that installs inline with the crankcase ventilation to trap oil and water before they reach the intake. It is typically mounted under the hood and plumbed between the PCV/CCV and intake with the supplied hoses and fittings. Notable features include a 300 ml aluminum reservoir, an internal removable baffle that can accept steel shot for improved condensation, a built-in dipstick for level checks, and a removable bottom for easy draining and cleaning. For routine driving on a GMC Sierra it offers a straightforward way to reduce carbon build-up in the intake and prolong engine life when used correctly. Being a universal kit, it may require custom brackets or longer hoses to fit neatly on some Sierra model years, and the kit does not include vehicle-specific mounting hardware. The aluminum construction is durable but the small 300 ml capacity means frequent checks on high-blow-by engines. For owners willing to do a little fabrication, this is a solid low-cost option.
Best for: Budget-conscious GMC Sierra owners who want a low-cost way to reduce intake contamination and are comfortable modifying or fabricating simple brackets for fitment.
Less Ideal for: Buyers seeking a plug-and-play, vehicle-specific solution with included mounting hardware or those who prefer a large-capacity can that needs less frequent maintenance.
- Solid aluminum construction for durability and corrosion resistance
- Baffled design with removable baffle allows better oil separation and optional steel shot to increase condensation
- Built-in dipstick and removable drain make monitoring and cleaning straightforward
- Includes hose kit so basic plumbing is ready out of the box
- Universal fit means no vehicle-specific bracket is included and mounting may require fabrication
- 300 ml capacity is relatively small and may need frequent draining on high-mileage or forced-induction Sierra engines
Verdict A durable, no-frills 300 ml baffled catch can that saves money but requires basic mounting work and regular draining on a GMC Sierra.
5. RALZAOTO Oil Catch Can Separator for Chevy/GMC 5.3L & 6.2L
| Fitment | 2014–2018 Silverado/Sierra 1500, 2015–2020 Tahoe/Suburban/Yukon, 2015–2019 Escalade 6.2L |
|---|---|
| Material | Anodized aluminum |
| Included | Hoses, custom brackets, fittings |
| Recommended check interval | Inspect every 500–1,000 miles |
This RALZAOTO oil catch can installs on the PCV side of the engine to separate oil vapor from crankcase blow-by before it reaches the intake. The kit includes custom brackets, hoses and fittings aimed at direct replacement for compatible 5.3L and 6.2L Chevrolet and GMC models, and the anodized aluminum construction resists heat and pressure. A fine mesh aluminum filter captures small oil droplets so less residue reaches the intake, which helps keep the throttle body and intake ports cleaner over time. Installation is typically possible in about 30 minutes but can be fiddly if factory hoses are old or routing tight. The can is compact, so it needs regular checks and draining — several users report filling at around 1,000–1,500 miles depending on driving. There are no detailed printed instructions in some packages, so owners comfortable with light DIY or basic shop help will have an easier time getting it fitted without issues.
Best for: Risk-averse mainstream buyers who want a practical, tested modification to reduce oil buildup in the intake and prefer a kit that matches factory routing with included hardware.
Less Ideal for: Drivers who want a maintenance-free or large-capacity solution for heavy-duty, high-mileage daily use should consider larger aftermarket options or professional-grade systems instead.
- Vehicle-specific fitment for 5.3L and 6.2L Chevy/GMC V8s simplifies installation.
- Anodized aluminum body resists heat and pressure and looks factory-grade under the hood.
- Includes hoses, brackets and fittings so no separate parts are required for direct replacement.
- Fine mesh internal filter captures small oil vapor droplets to reduce intake contamination.
- Relatively small reservoir capacity requires frequent checks and draining on higher-mileage daily driving.
- Some packages lack clear printed instructions which can complicate first-time installs.
Verdict A compact, vehicle-specific catch can that offers a durable, factory-like fit and noticeable intake protection but needs regular draining due to limited capacity.
6. TEMSONE Universal 2-Port 750ml Baffled Aluminum Oil Catch Can with Breather Filter and Drain Valve
| Fit Type | Universal |
|---|---|
| Manufacturer | TEMSONE |
| Capacity | 750 ml |
| Material | Aluminum |
| Ports | 2 |
This TEMSONE catch can captures oil and moisture from the PCV/CCV flow to reduce carbon buildup in the intake and help protect the engine. It mounts in-line with crankcase ventilation or to a breather port and uses internal baffles plus a top breather filter to separate liquid from vapor. The 750ml capacity and included drain valve make routine maintenance simple since you can empty collected oil without disassembling the unit. The aluminum body is corrosion resistant and reviewers report solid build quality and a tight seal. It is sold as a universal unit so you will typically need to purchase hoses or adapters sized for your installation and use Teflon tape on threaded fittings for a good seal. Some users found the included brass screen restrictive on certain turbo or older engines and a few installers add internal wool or modify the screen for improved flow. Expect straightforward function for everyday engine protection but be prepared to adapt fittings for direct fitment on a GMC Sierra and to size hoses appropriately.
Best for: A practical optimizer looking for a cost-effective way to reduce intake carbon buildup on a GMC Sierra and extend engine life without a custom fabricated solution.
Less Ideal for: Owners seeking a vehicle-specific, plug-and-play catch can kit with all hoses and mounts tailored to a GMC Sierra should consider purpose-made Sierra kits instead.
- Large 750ml capacity reduces frequency of draining
- Baffled internal design and breather filter separate oil and moisture effectively
- Aluminum construction resists corrosion and feels sturdy
- Includes drain valve and basic fittings for easier maintenance
- Universal fit means hoses or specific adapters for GMC Sierra are not included
- Brass internal screen can be overly restrictive on some engines requiring modification
Verdict A solid, budget-friendly universal catch can with large capacity and durable construction that delivers everyday engine protection for a GMC Sierra but will need hoses or adapters for a neat, vehicle-specific install.
7. EVIL ENERGY 300ml Baffled Oil Catch Can with 5ft NBR Hose Kit
| Capacity | 300 Milliliters |
|---|---|
| Hose length | 5 ft (1.5 m) |
| Hose inner diameter | 3/8" |
| Thread | M16x1.5 |
| Fuel Type | Gasoline |
This EVIL ENERGY catch can is a compact, billet-style baffled separator that collects oil and moisture from PCV/CCV ventilation to help keep the intake tract and valves cleaner. It installs as an inline catch can or as a breather-mounted unit for pre-PCV setups and includes a removable baffle plus steel wool to improve coalescing of oil droplets. The kit ships with a 5 ft NBR hose and M16*1.5 threaded fittings so routing is straightforward in most engine bays. Practical benefits include solid aluminum construction, secure fittings, and a 300ml capacity that balances mountability and service intervals so you are not emptying it every few hundred miles. Limitations to expect are universal-fit hardware that may need extra hose or clamps for a tidy or vehicle-specific install, and the manufacturer cautions about increased moisture and possible freezing in very cold climates which requires more frequent maintenance. For GMC Sierra owners this is a budget-friendly, effective way to reduce intake contamination if you plan for a short additional hose run or sourcing a couple of extra clamps for a clean fitment.
Best for: Balanced owners looking for a reliable, mid-cost catch can that reduces intake contamination without major modification and who prioritize a durable, serviceable solution.
Less Ideal for: Drivers who want a plug-and-play, vehicle-specific kit with perfect hose lengths and fittings out of the box should consider a model made specifically for their Sierra variant instead.
- Baffled internal design with removable baffle and included steel wool improves oil separation.
- Solid aluminum construction gives a durable, billet look and dependable sealing.
- Includes 5 ft heat- and wear-resistant NBR hose and threaded fittings for straightforward installation.
- 300ml capacity is compact for tight engine bays while providing reasonable service intervals.
- Universal kit fittings and hose sizes may not match every vehicle and can require purchasing extra hose or clamps.
- O rings supplied can be tight and risk damage if over-tightened during installation.
- In very cold climates moisture can freeze if the can is not cleaned frequently.
Verdict A well-built, compact baffled catch can that offers strong value for GMC Sierra owners willing to do minor hose or clamp swaps for a tidy install.
Choosing the Right GMC Sierra Oil Catch Can: Key Factors to Consider
Separation Efficiency
How effectively a catch can removes oil mist and vapors determines how much contamination reaches the intake tract. Higher separation efficiency reduces the rate of carbon and varnish buildup on intake valves and throttle plates, which helps maintain performance and fuel efficiency over time.
Look for designs that combine baffles, filter media, or centrifuge action to condense oil droplets. The more oil the can traps on each pass, the less frequently you will need to service it and the lower the long-term risk of intake fouling.
Fitment and Mounting Options
A can that does not physically fit the engine bay or lacks practical mounting points can lead to a difficult installation or interference with other components. Consider the available space in the GMC Sierra engine compartment and whether the can includes brackets or hardware suited to that layout.
Multiple mounting positions and adjustable brackets increase the chances of a clean, secure installation without stressing hoses or connections. Also account for clearance to heat sources and moving parts to avoid premature wear or heat soak.
Connection Type and Hose Routing
Catch cans connect to the PCV and intake or intake manifold; the type and diameter of fittings affect airflow and sealing. Proper hose routing minimizes kinks and excessive bends that could impede crankcase ventilation or create oil traps in the lines.
Choose systems with clear labeling for inlet and outlet ports and use quality hoses rated for oil and heat exposure. Short, direct runs with secure clamps reduce risk of leaks and ensure the system functions as intended.
Drain and Serviceability
How easy it is to empty and inspect the catch can affects how often it will be serviced. Transparent sight tubes or clear collection chambers let you monitor accumulation without disassembly, while bottom drains or quick-release fittings speed routine maintenance.
Frequent or difficult service is a common deterrent to proper upkeep, so prioritize cans that simplify draining and cleaning. Also check whether replacement filters or seals are readily available to maintain long-term performance.
Materials and Corrosion Resistance
Materials affect durability and long-term reliability in the engine bay environment. Corrosion-resistant metals or robust plastics resist degradation from oil, moisture, and road salts, which preserves sealing surfaces and internal baffles.
Anodized or stainless finishes, high-quality seals, and reinforced fittings reduce the chance of leaks and component failure. Solid construction also helps the unit withstand vibrations and temperature cycles typical of daily driving.
Impact on Engine Breathing and Vacuum
Any inline device added to the PCV system can affect crankcase ventilation dynamics. A catch can should not introduce excessive flow restriction or create unintended vacuum that alters valve timing or ventilation performance.
Look for designs that maintain proper flow with minimal pressure drop and that are sized for the engine's ventilation volume. Manufacturers that provide flow or pressure-drop specs give a clearer indication of how the can will interact with the vehicle's breathing system.
FAQ
What does a GMC Sierra oil catch can do?
A catch can captures oil mist and condensed blow-by vapors before they reach the intake tract. By removing those contaminants it helps reduce deposits on intake valves and throttle components, which can preserve performance and lower cleaning frequency.
How often should I service a catch can?
Service frequency varies with driving style and engine condition, but many owners check the can every oil change or every few thousand miles. Inspect the collection level regularly and drain when the reservoir reaches a moderate fill point to avoid overflow or reduced separation efficiency.
Will installing a catch can affect my truck's performance?
A properly sized and installed catch can should not harm performance. It is intended to trap oil vapor while allowing crankcase gases to vent. Poorly routed hoses or a unit that causes excessive flow restriction could change ventilation behavior, so correct fitment and hose routing are important.
Can I install a catch can myself on a GMC Sierra?
Many catch can installs are do-it-yourself friendly if you have basic hand tools and mechanical comfort. Choose a kit with clear instructions and compatible fittings, and plan hose lengths and mounting locations ahead of time. If you are unsure about routing or vacuum connections, seek professional help.
Does a catch can require special parts or adapters?
Some installs use direct-fit hoses and included fittings, while others need simple hose adapters or mounting hardware. Inspect the kit contents and confirm that hoses match the PCV and intake ports on your Sierra. Avoid makeshift connections that could loosen or leak under heat and vibration.
Are there downsides to using a catch can?
Potential downsides include the need for regular maintenance and the risk of incorrect installation. If not serviced, a catch can can fill and allow oil to pass through or create blockages. Choosing a well-documented product and following service intervals helps mitigate these issues.
How We Chose the Best GMC Sierra Oil Catch Can
We focused on products that are sized and routed appropriately for the GMC Sierra's PCV and crankcase ventilation layout. Key evaluation criteria included oil separation efficiency, physical fitment and mounting options that work within the Sierra engine bay, ease of installation with common tools, and drain or serviceability features that affect ongoing maintenance. We also considered the durability of materials and the clarity of installation instructions, since these matter for reliable long-term operation. Units that required extensive fabrication or major modifications to factory vacuum lines were excluded, as were products without clear technical specs on filtration or those with poor documented serviceability. The result is a curated list of seven catch cans that balance effective oil separation, straightforward install steps, and durable construction for GMC Sierra owners.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting a catch can for a GMC Sierra, prioritize separation efficiency, correct fitment, and ease of service. Those factors directly influence how much oil reaches the intake and how much effort you must spend on maintenance. Balance build quality and installation simplicity with the can's claimed filtration performance. Address hose routing and mounting during installation to avoid leaks and ensure the system vents properly while trapping contaminants.
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