Radium Engineering 20-0637-FL Dual Catch Can Kit for Nissan S15 Silvia / 200SX

Vehicle Fitment

• 1999-2002 Nissan Silvia S15 (SR20DET)
• 1999-2002 Nissan 200SX S15 (SR20DET)

Fitment Notes

• Designed specifically for the SR20DET engine as installed in the Nissan S15 Silvia and 200SX
• Mounts using factory threaded bosses and wiper blade motor mount points - no cutting, drilling, or permanent modification required
• Closed-loop system that does NOT vent to atmosphere (VTA) - emissions compliant and track legal
• The Fluid Lock (-FL) variant upgrades both catch cans to Radium's patented Fluid Lock design for improved sealing and oil retention
• For single-circuit protection only, the PCV-only kit (20-0635-FL) and CCV-only kit (20-0636-FL) are sold separately

Features

• Dual catch can system addresses both the PCV circuit (valve-to-manifold) and the CCV circuit (crankcase vent-to-intake pipe) simultaneously for maximum protection
• Fluid Lock 6061 billet aluminum catch cans with O-ring sealed two-piece construction - safe for pressurized forced induction applications
• Two-step internal oil separation baffling with cleanable and reusable stainless steel filter media accelerates oil condensation from blow-by gases
• Large 10AN ORB main ports and 4AN ORB drain port on each can - compatible with a wide range of AN plumbing configurations
• Integrated M8 dipstick on each can for quick inspection of accumulated fluid without removing the can
• Lower half of each can unscrews for easy draining without bracket removal
• Nissan-specific mounting brackets mount using OEM threaded locations - no modifications to the engine bay required
• Prevents oil accumulation in the intake pipe, intercooler, throttle body, and intake manifold; lowers hydrocarbon emissions

Specifications

• System Configuration: Dual - PCV can (20-0635-FL) + CCV can (20-0636-FL)
• PCV Can Mount Location: 3 OEM threaded bosses, RH corner near firewall
• CCV Can Mount Location: 2 wiper blade motor mount points
• Main Ports: 10AN ORB (7/8-14 female threads) per can
• Drain Port: 4AN ORB per can
• Construction: 6061 billet aluminum, anodized and laser engraved
• Filter Media: Stainless steel - cleanable and reusable
• Vent Type: Closed-loop (not vented to atmosphere)
• Hardware: Stainless steel

Included Components

• 1x Radium Fluid Lock catch can - PCV circuit (20-0635-FL)
• 1x Radium Fluid Lock catch can - CCV circuit (20-0636-FL)
• 2x Nissan S15-specific mounting brackets
• AN adapter fittings and hose ends for both circuits
• Radium PCV hose for both circuits
• Stainless steel mounting hardware

Product Description

The Radium Engineering 20-0637-FL is a dual Fluid Lock catch can kit engineered specifically for the Nissan S15 Silvia and 200SX with the SR20DET engine. It simultaneously addresses both the PCV circuit - running inline between the PCV valve and the intake manifold - and the CCV circuit - running inline between the crankcase vent port and the intake pipe. At idle and steady-state cruise, the PCV side filters oil-saturated vapors before they reach the intake manifold. At wide-open throttle, the CCV side captures the high-volume crankcase blow-by that would otherwise coat the intake pipe and intercooler with oil, degrading both performance and heat exchanger efficiency.

Both cans are Radium's Fluid Lock design - machined from 6061 billet aluminum, O-ring sealed, and rated for pressurized forced induction systems. Internal two-step baffling with cleanable stainless steel filter media ensures effective oil separation. All mounting uses factory threaded bosses and wiper motor mount points with no cutting, drilling, or permanent modification to the vehicle. The system is closed-loop (no atmospheric vent), keeping it emissions compliant and track legal. Each can's lower half unscrews independently for easy fluid disposal without removing the bracket.