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The Spectre Oil Breather Cap 3/4in. (Push-In) stands as the essential valve cover accessory for classic and performance engines. It features a chrome-plated steel housing with an internal baffle that prevents oil splash while delivering superior crankcase ventilation that outperforms basic grommet caps or twist-on breathers by maintaining consistent airflow without leaks or oil misting during high-RPM operation. Designed for universal fitment on valve covers with 3/4-inch to 1-1/4-inch breather holes, this push-in cap integrates seamlessly with stock or aftermarket setups to reduce pressure buildup and extend engine life. This ensures builders and daily drivers experience cleaner engine bays and reliable performance compared to exposed PCV valves or undersized filters. Crafted from durable triple-chrome plated steel for corrosion resistance and easy cleaning, it provides a polished look that complements show cars or hot rods better than plastic alternatives. It also supports emissions compliance where applicable for a straightforward upgrade that enhances overall engine breathing across street, strip, or track conditions.
Warranty – Spectre limited lifetime warranty against defects
| Application | Examples | Notes |
|---|---|---|
| Valve Covers | Small Block Chevy, Ford Windsor, Mopar LA | 3/4-inch to 1-1/4-inch holes |
| Imports | Honda B/D Series, Nissan SR20 | Universal breather fit |
| Custom Builds | Any Engine | Aftermarket valve covers |
Part Weight: 0.3 lbs | Shipping Box Dimensions: 6 in × 4 in × 2 in
Air filters and intake filtration parts for cars, trucks, SUVs, Jeeps, and diesel platforms are stocked at Black Ops Auto Works. Shop direct-fit filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, HVAC filters, engine breather filters, pre-filters, and velocity stacks for Hellcat, Trackhawk, TRX, Grand Cherokee, Challenger, Charger, Camaro, Corvette, Mustang, F-150, Tacoma, Tundra, BMW, and Honda platforms. Every product is filterable by year, make, model, trim, engine, and filter dimension so the correct part ships the first time. Black Ops Auto Works carries 3,397 air filter SKUs across direct-fit, universal, cabin, and pre-filter categories. What This Collection Covers Air filters remove dirt, dust, and debris from air entering the engine or cabin. This collection spans OE-style direct-fit and drop-in filters, universal cone and clamp-on filters for custom intakes, cabin and HVAC filters for interior air, engine breather filters for crankcase ...
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Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...
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Engine breather filters are vented filtration caps and inline filter assemblies that allow crankcase pressure to vent safely to atmosphere without releasing raw oil vapor, reducing the internal pressure buildup that can push past valve cover seals, rear main seals, and PCV grommets in high-output and modified engines. Unlike a standard PCV system that routes crankcase gases back into the intake manifold, an open breather filter vents directly to air, making it the preferred choice on dedicated track cars, drag builds, and any engine running so much blowby that the factory PCV system cannot handle the volume without saturating the intake with oil mist. Performance engines that produce significantly more blowby than stock through increased displacement, high-lift camshafts, or forced induction benefit most from breather filter upgrades that vent excess crankcase pressure without contaminating the intake charge. Proper crankcase ventilation reduces oil consumption, keeps the intake tra...
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Since 1983, Spectre Performance has been at the forefront of innovation, providing unique and high-quality automotive parts and components that fuel your car or truck obsession. Our commitment to performance and durability is reflected in every product we create. Why Choose Spectre? With a rich history that includes setting world records—becoming the first wheel-driven, gasoline-powered car to exceed 400 mph—our journey from a two-car garage to a leader in the automotive aftermarket is nothing short of extraordinary. Our Cutting-Edge Technology We utilize state-of-the-art equipment to ensure our products meet the highest standards: Advanced chassis dynamometer for diagnostic and emissions testing Top-of-the-line Super-Flow flow bench for airflow, pressure, and velocity measurement Scientific laboratory-grade equipment for product development Product Categories Air Intake Systems Our air intakes are crafted from high-quality polished or powder-coated aluminum tubing, complete wi...
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