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2012–2018 Jeep Wrangler JK 3.6L Cold Air Intake Kit
A 2012–2018 Jeep Wrangler JK running the 3.6L Pentastar V6 leaves the factory with 285 hp and 260 lb-ft, but it breathes through a multi-chamber plastic airbox, a paper filter, and a snorkel tucked behind the grille for quiet rather than airflow. This Flashark cold air intake kit replaces that whole assembly — airbox and intake tube — with a mandrel-bent aluminum tube, a washable dry cotton gauze filter, and a black powder-coated steel heat shield. For a JK working harder than stock, whether that means 35-inch tires, added armor weight, or high-altitude trail use, the aim is to cut restriction on the way in and sharpen throttle response in the 2,500–4,000 RPM band where a Wrangler actually needs it.
The kit keeps the factory mounting points and sensor provisions, so the job is a bolt-on swap rather than a fabrication project — about 45–60 minutes with basic hand tools, and no ECU reflash. Expected output range for this application is approximately 8–10% more peak horsepower, with the clearest improvement in the low- and mid-RPM range; actual results vary with engine condition, intake-air temperature, ECU calibration, fuel quality, exhaust restrictions, and supporting modifications. Because the filter is dry and reusable, trail dust no longer means buying disposable paper filters, and the black powder-coated finish on both the tube and the heat shield keeps the engine bay looking factory-adjacent rather than bolted-on.
Specifications
| Specification | Detail |
|---|---|
| Brand | FLASHARK |
| SKU | FLIS25111 |
| Material | Aluminum intake tube |
| Tubing Finish | Black powder-coated |
| Filter Type | Dry (no oil required) |
| Filter Media | Multi-layer cotton gauze |
| Filter Color | Red |
| Heat Shield | Included |
| Installation | Bolt-on, 45-60 minutes |
| Tuning Required | No |
| Warranty | 1 Year |
Key Features
- High-Flow Mandrel-Bent Aluminum Intake Tube: Precision mandrel-bent aluminum with a black powder-coated finish for heat resistance, corrosion protection, and a clean OEM+ appearance. The smooth-radius bends and larger internal diameter are designed to remove the turbulence and restriction of the factory plastic intake tract.
- Dry High-Flow Cotton Gauze Air Filter: Multi-layer cotton gauze media delivers strong filtration without the mess or the MAF-sensor contamination risk that comes with oiled filters. Fully washable and reusable — rinse, dry, and reinstall after heavy trail use. No oil required, ever.
- Black Powder-Coated Steel Heat Shield: Durable steel shield positions the filter away from the exhaust manifold and radiator heat plume, and is designed to direct cooler ambient air from the fender area toward the intake. The black powder coat resists corrosion from trail debris and moisture while blending cleanly with the factory engine bay.
- True Bolt-On Installation, No Tune Required: Uses the factory mounting points, MAF sensor location, intake-air temperature sensor provision, and PCV connections. The factory PCM adapts through fuel trim learning, so no ECU reflash and no special tools are needed — about 45–60 minutes with basic hand tools.
- Improved Throttle Response in the RPM Range That Matters: The reduced intake restriction is designed to be most noticeable in the 2,500–4,000 RPM band — exactly where you need instant response for off-road crawling, merging onto the highway, or passing with oversized tires.
- Trail-Ready Durability: The washable dry filter is built to handle dust, sand, and trail debris between cleanings. The powder-coated tube and shield resist corrosion from moisture, mud, and road salt, and because the filter is oil-free there is no oil to foul the MAF sensor after a wash-day service.
Who This Kit Is For
This kit is built for the owner of a 2012–2018 Jeep Wrangler JK or JKU with the 3.6L Pentastar V6 who wants a bolt-on intake upgrade that stays close to stock under the hood while removing the factory airbox restriction.
✓ For you if…
- you run 35-inch or larger tires, added armor weight, or a lifted JK and want the engine to feel less strained at part throttle;
- you want a first bolt-on upgrade that installs in about 45–60 minutes with basic hand tools;
- you would rather run a washable dry filter than keep buying disposable paper ones;
- you use your Wrangler as a dual-purpose vehicle — weekday commuter, weekend trail rig;
- you have confirmed your state and local emissions requirements (see the Compliance Notice below).
✗ Not for you if…
- you need an OEM-replacement filter, hose, or sensor part rather than an intake kit;
- you are chasing a fuel-economy gain — the changes here are throttle response and intake tone;
- your Wrangler is a 2007–2011 JK with the 3.8L V6, a 2018+ JL, or a Gladiator JT;
- you ford deep water regularly without relocating the filter;
- you are in California or another CARB-adopting state and need a street-legal intake — this kit carries no CARB Executive Order number.
Running the 3.6L as a complete system? Pair the intake with the Jeep Wrangler JK 3.6L exhaust, or browse all Jeep Cold Air Intake Kits.
Check Before Ordering
Fitment is the most common reason an intake gets shipped back, and emissions rules are a hard gate in some states. Confirm these six points first.
- Vehicle: exact fit for the 2012–2018 Jeep Wrangler JK and JKU with the 3.6L Pentastar V6. Trim level is not a fitment variable on this platform — Sport, Sahara, Rubicon, Willys, and Freedom share the same engine-bay layout. If your Wrangler is a 2007–2011 JK with the 3.8L V6, a 2018+ JL, or a Gladiator JT, this kit does not fit.
- 2018 model year: Jeep sold the JK and the new JL side by side in 2018, and this kit is for the 2018 JK only. The JK keeps a traditional grille with separate amber turn-signal housings and a flat hood; the JL has a swept-back grille with integrated turn signals and a more rounded hood. Verify with your VIN (10th digit), owner's manual, or build sheet — a 2018 Wrangler Unlimited is not automatically a JKU.
- Intake type and system scope: the kit replaces the factory airbox assembly and intake tube with a mandrel-bent aluminum tube, a cone-style dry filter, and a steel heat shield designed to isolate the filter from exhaust-manifold heat and draw cooler air from the fender area. The throttle body, intake manifold, and the rest of the engine are untouched.
- Sensors and bore: the kit is designed to retain the factory MAF sensor location and the intake-air temperature sensor provision, so no adapter or spacer is required. Confirm the sensor connectors and intake hoses on your engine are original before ordering.
- Legality: this kit carries no CARB Executive Order number, so it cannot be sold or used in California or other CARB-adopting states. Confirm your state and local requirements before ordering.
- Install and conditions: bolt-on, about 45–60 minutes with basic hand tools, using the factory mounting points. The filter sits in the engine bay rather than inside a sealed snorkel, so avoid water crossings deep enough to reach it — hydrolock risk. Keep the factory splash shields installed.
What's in the Box
Every part below is included with the kit.
- ✓ 1 × Mandrel-bent aluminum intake tube
- ✓ 1 × High-flow dry cotton gauze air filter
- ✓ 1 × Black powder-coated steel heat shield
- ✓ 2 × High-temperature silicone coupler set
- ✓ 5 × Stainless steel hose clamps
- ✓ 1 × Complete mounting hardware kit
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
| Year | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2012-2018 | Jeep | Wrangler JK (2-Door) | 3.6L Pentastar V6 | All trims — Sport, Sahara, Rubicon, Willys, Freedom, etc. |
| 2012-2018 | Jeep | Wrangler Unlimited JKU (4-Door) | 3.6L Pentastar V6 | All trims — engine bay and intake layout identical to 2-door JK |
CRITICAL: 2018 Model Year — JK vs JL
Jeep sold both the outgoing Wrangler JK and the all-new Wrangler JL during the 2018 model year. This intake fits the 2018 JK only — NOT the 2018 JL. Before ordering, verify your platform: the JK has a more traditional grille with separate turn signal housings; the JL has a more swept-back grille with integrated turn signals and a more rounded hood profile. Check your VIN or owner's manual if uncertain.
2012–2018 Jeep Wrangler JK 3.6L Cold Air Intake FAQs
Q1: Is this cold air intake legal in my state?
A1: Not legal for sale or use in California (and other CARB-adopting states). This kit does not carry a CARB Executive Order number, so if you live in a CARB-adopting state, check your inspection requirements before ordering.
Q2: Will this cold air intake fit my 2012–2018 Jeep Wrangler JK?
A2: Yes, if your Wrangler is a 2012–2018 JK or JKU with the factory 3.6L Pentastar V6. It fits both the two-door JK and the four-door Wrangler Unlimited JKU, and it covers every trim level — Sport, Sahara, Rubicon, Willys, and Freedom — because they share the same engine-bay layout. It does not fit the 2007–2011 JK with the 3.8L V6, the 2018+ JL, or the Gladiator JT.
Q3: How do I know whether my 2018 Wrangler is a JK or a JL?
A3: Jeep sold the outgoing JK and the all-new JL during the same 2018 model year, and this kit fits the 2018 JK only. A JK keeps a traditional grille with separate amber turn-signal housings and a flat hood; a JL has a swept-back grille with integrated turn signals and a more rounded hood. Check your VIN (10th digit), owner's manual, or build sheet if you are unsure. A 2018 Wrangler Unlimited is not automatically a JKU — 2018 JL Unlimited models exist as well.
Q4: Will this fit a 2007–2011 Wrangler with the 3.8L V6?
A4: No. The 2007–2011 JK uses a different 3.8L V6 with its own intake routing, throttle-body placement, sensor configuration, PCV plumbing, and engine-bay mounting points. The body shell looks similar, but the engine-side connections are not interchangeable, so this kit is for the 3.6L Pentastar only.
Q5: Will this intake fit a Jeep Wrangler JL or a Gladiator JT?
A5: No. The JL and JT also use the 3.6L Pentastar V6, but their engine-bay layout, intake routing, airbox position, sensor locations, and mounting points differ from the JK platform. The same displacement does not mean the same intake path, so choose a JL or JT-specific intake for those vehicles.
Q6: How much horsepower will this add to a 3.6L Pentastar?
A6: Expected output range: approximately 8–10% more peak horsepower, which works out to roughly 22–28 hp on a healthy 3.6L Pentastar. Actual results vary with engine condition, intake-air temperature, ECU calibration, fuel quality, exhaust restrictions, and supporting modifications. On a mostly stock JK, the sharper throttle response and deeper induction note are often more noticeable than the peak number.
Q7: Will it improve throttle response on the 3.6L Pentastar?
A7: The aluminum intake tube and high-flow filter are designed to reduce restriction in the original intake path, and the biggest change is expected in the low- and mid-RPM range — roughly 2,500–4,000 RPM, the band a lifted JK on oversized tires leans on most. Results still vary with tire size, axle gearing, vehicle weight, elevation, engine condition, and ECU adaptation. This kit complements proper gearing; it does not replace it.
Q8: What does this intake sound like on a Jeep Wrangler JK?
A8: Expect a deeper, more aggressive induction note from the engine bay as you open the throttle, most noticeable above roughly 3,000 RPM. At a steady highway cruise it quiets down and does not drone. This kit changes the sound entering the engine — it does not change your exhaust note.
Q9: Do I need a tune after installing this cold air intake?
A9: No. On an otherwise stock 2012–2018 3.6L JK, the factory PCM adapts through fuel trim learning, so no ECU reflash is required. A custom tune only becomes worth considering when you add changes that significantly alter airflow — a larger throttle body, a full exhaust, internal engine work, or forced induction. Read more about tune requirements for a cold air intake.
Q10: Will this cold air intake improve my fuel economy?
A10: Fuel economy is dominated by driving habits and vehicle setup, and an intake alone will not deliver a measurable MPG gain. Tire size, lift height, axle ratio, vehicle weight, speed, terrain, and headwind all matter more. Expect the real benefit as throttle response and intake tone rather than fuel savings.
Q11: Can this intake cause a check engine light or rough idle?
A11: A correctly installed kit on a healthy Pentastar should not trigger a check engine light. When problems do appear after an install, they almost always trace back to a loose coupler clamp creating an unmetered air leak, a disconnected or damaged PCV breather hose, an intake-air temperature sensor that is not seated correctly, or a contaminated MAF sensor. Recheck every connection, clamp, and sensor plug, and scan for diagnostic trouble codes before replacing parts.
Q12: Does the factory intake-air temperature sensor need to be transferred?
A12: Yes. Any factory sensor or hose that was connected to the original intake must be transferred or reconnected in the correct location. Handle the sensor carefully, make sure its seal sits correctly, and route the wiring away from sharp edges and hot or moving components. Never leave an unused opening in the intake tube — unmetered air causes drivability problems.
Q13: Is this intake safe for off-road use — dust, mud, and water crossings?
A13: The dry cotton gauze filter is built to handle dusty trail conditions and is fully washable, and the heat shield offers some splash protection — but it does not turn the intake into a sealed snorkel system. Clean the filter more often after dusty runs. Avoid deep water crossings; if enough water is drawn into a cylinder it can cause hydrolock and severe engine damage. Keep the factory splash shields installed.
Q14: How do I clean the filter, and how often?
A14: Inspect the filter at every oil change and clean it when dirt buildup is significant. Rinse from the inside out with low-pressure water — no compressed air and no solvents — then let it air-dry completely before reinstalling. Never oil this filter; oil will contaminate the MAF sensor. Jeeps that see sand, gravel, or dusty trails need more frequent service than street-driven ones. Follow this step-by-step how to clean a cold air intake filter guide.
Q15: How difficult is it to install, and how long does it take?
A15: It is a straightforward job for anyone with basic mechanical experience and common hand tools, and it takes about 45–60 minutes. You remove the factory airbox and intake tract, transfer the required sensor and hoses, mount the heat shield using the factory bolt locations, fit the aluminum tube with the supplied couplers and clamps, attach the filter, and tighten everything down. Before you start the engine, make sure no tube touches the hood, fan, belts, coolant hoses, or wiring, and recheck all clamps after the first heat cycle and test drive.
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Easy Return Policy
Every order comes with a 30-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days. Click for Return Policy
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