J&L Oil Separator

2022–2025 Subaru BRZ 2.4L

3117P-C

Overview:

The J&L Oil Separator is a precision-engineered solution designed to improve the crankcase ventilation system on the Subaru BRZ 2.4L models from 2022 to 2025. During normal engine operation, oil vapors can accumulate in the intake tract, leading to reduced fuel octane and potential performance loss. This issue is particularly pronounced in modern engines and forced induction setups, where crankcase pressures are elevated. The J&L Oil Separator effectively traps these oil vapors before they reach the intake, ensuring cleaner air delivery, improved combustion, and enhanced engine longevity.

Crafted specifically for the passenger side PCV system, this oil separator is ideal for enthusiasts seeking to maintain optimal engine performance and reduce intake contamination without compromising reliability or fitment.

Key Features:

Engineered for durability and efficiency, the J&L Oil Separator offers a range of features that set it apart from standard PCV components:

• Constructed from solid billet aluminum for superior strength and longevity
• Clear anodized finish for corrosion resistance and a sleek appearance
• Multistage filtration system combining a fine mesh stainless steel screen and a thick aluminum honeycomb filter
• 3-ounce fluid capacity to collect and hold oil vapors effectively
• Knurled tank base for easy removal and draining of collected oil
• O-ring seal to ensure a leak-free installation
• Designed to prevent oil vapor from diluting fuel and contaminating intake components
• Direct fitment for the passenger side PCV system on 2022–2025 Subaru BRZ 2.4L engines

Construction & Design:

The J&L Oil Separator is milled from a solid billet aluminum block, providing a robust and durable housing that withstands the rigors of daily driving and high-performance use. The clear anodized finish not only protects against corrosion but also offers a visually appealing look under the hood. Inside, a fine mesh stainless steel screen captures the smallest oil vapors, while a 1/2" thick, 1/16" aluminum honeycomb filter promotes coalescence of oil droplets, allowing them to fall into the reservoir below. This multistage filtration ensures that only clean air is routed back into the intake system, preserving engine efficiency and reducing carbon buildup.

Installation & Fitment:

Designed as a direct replacement for the passenger side oil separator on the Subaru BRZ 2.4L (2022–2025), installation is straightforward with no modifications required. The knurled base allows for easy removal when draining the collected oil, which should be performed every 2,000 to 3,000 miles to maintain optimal performance. The included O-ring ensures a secure, leak-free seal, making this upgrade both user-friendly and reliable.

What's Included:

• J&L Oil Separator (Passenger Side) with clear anodized finish
• O-ring seal for leak prevention
• Integrated filtration media (stainless steel screen and aluminum honeycomb filter)
• Drainable reservoir with knurled base

Ideal For:

This oil separator is perfect for Subaru BRZ owners who want to maintain clean intake air and protect their engine from oil vapor contamination. It is especially beneficial for drivers who frequently push their vehicles hard or use forced induction, as it helps preserve fuel quality and engine performance. Track enthusiasts, daily drivers, and anyone looking to extend the life of their engine’s intake components will find this product an essential upgrade.

J&L Oil Separator Co. builds application-specific oil catch cans (air/oil separators) designed to trap blow-by vapors before they contaminate intake and intercooler plumbing. It’s a practical performance upgrade for boosted and high-output engines, helping reduce carbon/oil buildup and keep intake charge paths cleaner over time.