DESCRIPTION
As of October 1, 2026 the updated VERSION 2 design of our catch can is now released and active on the site! Read below to see the updated description and new features!
The Chase Bays Oil Catch Can is the culmination of hundreds of hours of testing on dozens of builds, street and track. This is one of the most important modifications you can do to your engine! It is essential for preventing harmful oil and carbon buildup in the intake system, maintaining octane levels, increasing performance with cleaner inlet air, and properly venting the crankcase pressures in the most aesthetically pleasing, modular, and easiest to install solution on the market.
We started our initial design using CFD (Computational Fluid Dynamics) analysis to simulate input flow under operating conditions ranging from extreme vacuum to extreme boost, optimizing our design to maximize separation of contaminants and maintain flow through. Physical prototypes were then tested over thousands of miles in competitive road race and drift builds as well as on the street to validate our design in the real world, how our customers will use them.
Our catch can is machined from 6061 aluminum, bead blasted, then Hard UV-Proof Anodized Signature Chase Bays Black. The top and bottom are snapped together with a secure spring and pin system, and sealed with an O-Ring for a leak proof connection that is safe for the most extreme pressurized applications. All hardware is stainless steel. The are 2x 10AN ORB Inlets on the top for a seamless look and easy routing, as well as 1x 10AN ORB Outlet.
Fittings
Inlet and Outlet Fittings are offered in 10AN that are offered in Straight and 90º versions, both available in hose barb and 10AN varieties. In changing to 2x 10AN ORB Inlets, we have allowed for combinations of inlet sizes to help with modularity depending on the varying applications it can be used for, but has eliminated the need for our L Fittings. With adding a 3rd 10AN ORB port, there would be almost 300 variants available on this page alone, so we recommend checking out the AN Fittings on our site to find the fitting best suited for your application, as well as our reference chart below for common engine hose sizes.
Click below to see all available 10AN ORB Fittings available for all inlet and outlet ports of the Oil Catch Can!
Chase Bays 6AN to 10AN ORB Adapter
Chase Bays 10AN to 10AN ORB Adapter
Chase Bays 10AN ORB to 10AN 90º Elbow Compact Fitting
Chase Bays 10AN ORB to Barb Adapters
We offer a Stainless Steel Vent to Atmosphere Filter that's directly threaded as 10AN ORB for seamless look. This works well on the fitting outlet port when in use for vented systems such as differentials or high crank-case pressure naturally aspirated setups.
Air Oil Separation
Both inlets are equipped with stainless steel mesh filters for the best possible air, oil, and water condensation separation before it even enters the tank. Once the oil has passed through the filter, we have created the highest level of Oil Separation Baffling from the Outlet back to engine while maintaining complete flow. There is no return restriction.
Oil Level and Drain
An integrated mini Chase Bays Reservoir Cap Style Dip Stick with a notch shows when the oil is ready to be drained. The Dip Stick Cap is knurled for easier gripping. The Dip Stick itself has now been updated to be our signature purple anodize with level notches for easier reading. When the oil is ready to be drained, there is a 4AN ORB port on the bottom of the Can or the lower housing can be removed. However, we highly highly recommend our Oil Catch Can Drain Kit with petcock.
Engine Outlet Size Guide (OEM Based)
BMW M50 / M52 / S50 / S52 - 1" inch Valve Cover
BMW S54 - 5/8 Valve Cover
Honda B / H / D Series - 3/8 Valve Cover & 3/8 on Block
Honda K Series - 5/8 Valve Cover & 1/2 on Water Pump Housing
Honda S2000 F Series - 5/8 Valve Cover Forward Outlet & 3/8 Valve Cover Rearward Outlet
Nissan S13 SR20DET - 5/8 Valve Cover Exhaust Side (cap / delete one side of the tee that "drains back" to block, 3/8 Valve Cover Intake Side
Nissan S14/S15 SR20DET - 5/8 Valve Cover Exhaust Side, 1/8 Valve Cover Intake Side
Nissan RB20DET / RB25DET - 5/8 Valve Cover Intake and Exhaust Side
Nissan RB226DETT - 5/8 Valve Cover Intake and Exhaust Side x2 (each side has a 2-way L Fitting, most 26 builders would put one catch can per side)
Nissan KA24 - 5/8 Valve Cover Intake Side
Nissan VQ35 - (two) 1/2 Valve Cover Outlets Bank 1, (one) 1/2 Valve Cover Outlet Bank 2 (Oil Filler Cap side)
Toyota 1JZ-GTE non-VVTi - 5/8 Valve Cover Intake Side, 1/2 Valve Cover Exhaust Side
Toyota 1JZ-GTE VVTi - 1/2 Valve Cover Intake Side, 1/2 Valve Cover Exhaust Side
Toyota 2JZ-GTE non-VVTi, VVTi, and GE - 5/8 Valve Cover Intake Side, 1/2 Valve Cover Exhaust Side
Mounting
The back side of the catch can has two M8x1.25 threaded holes with included Stainless Allen Head Hardware for easy mounting. It is available with five different bracket design OPTIONS making installation on any chassis a breeze, see photos below for each bracket type. Click below to view your options on brackets available.
Chase Bays Type 1 Bracket
Chase Bays Type 2 Bracket
Chase Bays Type 3 Bracket
Chase Bays Type 4 Bracket
Chase Bays Type 5 Bracket
Dimensions and Capacity
The Catch Can Dimensions are 5"x3" without fittings and 6.5"x3" with. The oil capacity before its air/oil separation capabilities are void is 8 fluid ounces (0.25 quart).
Future Expansion
We're always improving and expanding our lineup! We're proud of launching the best catch can on the market, but we're not stopping there. Stay tuned as we launch:
- Full line of engine-specific Catch Can Kits, engine, valve cover adapters and all!
- Parallel Dual Catch Can Bracket: Our L-fitting is an elegant solution but we understand for extreme applications some customers will want a dual-can setup, and we’re working on it!
- Larger “competition” lower housing with 1-quart capacity for SCCA, NASA, FD, etc.