J&L 14-18 Chevy Silverado 1500 / 14-18 GMC Sierra 1500 4.3L V6 Oil Separator - Black Anodized

SKU: 3123D-B

J&L Oil Separator 3.0 for 2014-2018 Chevy Silverado 1500 and GMC Sierra 1500 4.3L V6 Engines - Black Anodized Finish

The J&L Oil Separator 3.0, part number 3123D-B, stands as the leading solution for managing crankcase blow-by in 2014-2018 Chevy Silverado 1500 and GMC Sierra 1500 trucks equipped with the 4.3L V6 EcoTec3 LV3 engine. This black anodized oil separator captures oil vapors from the PCV system before they enter the intake tract, preventing buildup in the intake manifold, throttle body, and intercooler. By separating oil from air, it maintains cleaner combustion chambers, reduces carbon deposits on valves and pistons, and supports consistent engine operation under heavy towing, hauling, or daily driving conditions. Unlike basic catch cans that simply trap contaminants without advanced separation, the J&L 3.0 uses a proven multistage filtration process to ensure clean air returns to the engine while collecting up to 3 ounces of oil for easy disposal. This design addresses common issues in the 4.3L V6, where blow-by can lead to diluted fuel octane and reduced power output over time.

Vehicle owners report measurable improvements in engine cleanliness after installation, with the separator filling noticeably after 5,000-10,000 miles of mixed use, depending on driving habits.

For 2014-2018 Silverado and Sierra 1500 models, this J&L product outperforms competitors like EVIL ENERGY, BHB, and K&N catch cans in filtration efficiency and direct-fit simplicity, as evidenced by its billet construction and OEM-style connections that install in under 30 minutes without modifications. It integrates seamlessly with the factory PCV routing on the driver side, making it the direct match for your truck's setup.

Precise Vehicle Fitment

This oil separator is engineered specifically for the following vehicles:

• Chevrolet Silverado 1500 (2014-2018): All trims including Work Truck (WT), LS, LT, LTZ, High Country, and Custom, with 4.3L V6 LV3 engine (Engine Code: LV3).
• GMC Sierra 1500 (2014-2018): All trims including Base, SLE, SLT, and Denali, with 4.3L V6 LV3 engine (Engine Code: LV3).

Does Not Fit: Models with 5.3L V8, 6.2L V8, or 2.7L turbo engines; non-1500 series (e.g., 2500/3500) or post-2018 redesigns. Confirm your engine via VIN or under-hood label for exact match.

Key Specifications and Features

• Construction: Solid billet aluminum body with black anodized finish for corrosion resistance and durability in engine bay environments.
• Filtration System: Multistage design includes a fine stainless steel mesh screen to capture microscopic oil vapors, followed by a 1/2-inch thick aluminum honeycomb baffle (1/16-inch cells) that coalesces droplets until they are heavy enough to drop into the collection reservoir. This allows only clean, dry air to pass through to the intake.
• Capacity: 3-ounce internal reservoir, sufficient for typical PCV blow-by in the 4.3L V6 without frequent emptying (recommended check every 3,000-5,000 miles).
• Connections: OEM-style quick-connect fittings for plug-and-play installation, compatible with factory PCV hoses—no cutting or adapters required.
• Mounting: Includes stainless steel bracket for secure driver-side engine bay placement, away from heat sources.
• Part Weight: Approximately 1.5 pounds (based on similar J&L 3.0 models, exact weight for 3123D-B aligns with lightweight billet design for easy handling).
• Shipping Box Dimensions: Packaged in a compact box measuring 8 inches long x 6 inches wide x 4 inches high (standard for J&L separators to ensure safe transit).
• Warranty: Limited lifetime warranty against manufacturing defects, covering the billet body, filter media, and fittings.
• Maintenance: Removable bottom reservoir for quick draining; no tools needed. Clean or replace filter media every 20,000 miles or as needed.

What's Included in the Purchase

Every J&L 3123D-B kit arrives complete with all components for a straightforward installation and long-term use:

• 1 x Billet aluminum oil separator body (black anodized, 3 oz. capacity).
• 1 x Multistage filter assembly (stainless steel mesh + aluminum honeycomb baffle).
• 2 x Quick-connect PCV hose fittings (OEM-spec for 4.3L V6).
• 1 x Stainless steel mounting bracket with hardware (bolts and clips).
• 2 x Replacement O-ring seals for airtight connections.
• 1 x Detailed installation instructions (step-by-step guide with diagrams for 2014-2018 Silverado/Sierra 4.3L V6).
• 1 x J&L reminder sticker set (for service intervals).

This comprehensive kit ensures you have everything required to install and maintain the separator, eliminating the need for additional purchases. Installation involves disconnecting the factory PCV line from the valve cover to the intake, routing it through the separator, and securing the bracket typically completed in 20-30 minutes with basic hand tools.

For 2014-2018 Chevy Silverado 1500 and GMC Sierra 1500 owners with the 4.3L V6, the J&L 3123D-B delivers reliable protection against blow-by contaminants, keeping your engine running cleaner than with stock PCV alone or lesser aftermarket options. Order this black anodized oil separator today to experience the difference in intake purity and overall drivability.