Radium Engineering Catch Can Kit, PCV, GM LS2/LS3/LS7 Engine, Fluid Lock

Radium Catch Can Kit, PCV, GM LS2/LS3/LS7 Engine, Fluid Lock

Application: GM LS2, LS3, LS7 Gen IV engines
Part Type: PCV catch can kit
Part Number: 20-0785-FL

Starting in 2004 with the Gen IV LS engines, GM replaced the PCV valve with a 2.5mm fixed orifice. A PCV valve promotes negative crankcase pressure, prevents boost pressure entering the crankcase and, in a backfire, stops combustible vapours igniting in the crankcase.

This kit improves the Gen IV LS crankcase ventilation system: the catch can runs inline between the included PCV valve and the intake manifold, mounted on a bracket at the front RH side of the cylinder head. Because the OEM 2.5mm orifice is restrictive, a baffled oil cap is included to draw as much blow-by from the crankcase as possible. The Fluid Lock can stops the reservoir overfilling and holds collected fluid until emptied.

Key Features

• Gen IV Specific: Restores a PCV valve and adds a baffled oil cap for better crankcase evacuation
• Mounting: Front RH side of the cylinder head
• Wet or Dry Sump: Compatible with both wet and dry sump engines
• Fluid Lock Design: Radium's patented Fluid Lock mechanism stops the reservoir overfilling and holds collected fluid until it is emptied, so contaminants can't spill back into the intake
• Large Ports: 10AN ORB inlet and outlet ports with a 4AN ORB drain port
• Efficient Separation: 2-step oil separation baffling
• Easy Checking: O-ring sealed dipstick shows how much fluid has been collected
• Capacity: 207ml (7 fl oz)
• Direct Fitment: No drilling required

What's Included

• Baffled oil catch can with integrated condenser and dipstick
• Anodised aluminium mounting bracket
• Anodised aluminium PCV valve
• Anodised aluminium baffled oil cap
• SAE quick connect fittings
• Stainless steel mounting hardware
• 3/8" PCV rubber hose
• Spring clamps
• Rubber caps

Optional Parts

• Radium Fluid Lock Catch Can Kit - GM LS V8 Engines (20-0260-FL) - use this kit instead for Gen III LS1 / LS6 engines
• Radium Catch Can Petcock Drain Kit (20-0024) - drain the can without removing the reservoir, where there is room underneath

Important Notes

• Make sure your engine has clearance in the catch can mounting area before ordering - some setups with extra belt-driven accessories (such as an aftermarket supercharger) may not be compatible
• For Gen III LS1 and LS6 engines use 20-0260-FL instead
• On wet sump engines (e.g. LS3) the baffled oil cap sits above the RH engine cover; on dry sump engines (e.g. LS7) it sits underneath
• There is no fixed emptying interval - check the dipstick after 3-4 weeks of driving and repeat as needed (PCV cans generally collect more than CCV cans)
• Empty by unscrewing the lower reservoir, or fit the optional Petcock Drain Kit where there is room under the can
• Excessive oil collection can indicate an engine problem such as excessive blow-by, an overfilled sump, poor breather port placement/baffling or a PCV valve leaking under load
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• GM LS2 Gen IV engine
• GM LS3 Gen IV engine
• GM LS7 Gen IV engine

For application support, send your vehicle details to TJ Auto Parts through the Parts Finder.

Supplier-listed applications:
- GM LS2 Gen IV engine
- GM LS3 Gen IV engine
- GM LS7 Gen IV engine

Note: Compatibility information is provided as a general guide only. Some vehicles may have multiple part variations for the same model or engine. To ensure this product is the correct fit and to be eligible for our Fitment Guarantee, please contact our team before purchasing.