Description
The Mishimoto MMAI-JLP-18SDW Performance Intake is a purpose-built cold air intake system engineered specifically for the 3.6L Pentastar engine in the 2018+ Jeep Wrangler JL and 2020+ Jeep Gladiator JT. This version features a dry washable air filter (model MMAF-38672SDW) and pairs a precision-engineered, rotational-molded intake tube with a dyno-tested resonator to let the Pentastar breathe easier. On the dyno, this intake flowed up to 36-percent better than the factory intake, producing proven gains of 10.8 hp and 11.4 lb-ft of torque.
Beyond raw airflow numbers, this Mishimoto air intake system is built around a smoother intake tube and a larger custom filter that reduce restriction without sacrificing the factory fit. The integrated resonator was meticulously tuned to keep the extra power in the most usable RPM range rather than just chasing peak numbers, and because the design retains the stock lower airbox and mounting points, installation stays straightforward — Mishimoto lists an install time of about 1 hour. The dry washable filter can be cleaned and reused, giving Wrangler and Gladiator owners an air intake filter that doesn’t require re-oiling, while Mishimoto also offers this same intake with an oiled filter for drivers who want maximum filtration in dustier conditions.
Vehicle Applications
This intake is a direct fit for the 2018+ Jeep Wrangler JL and 2020+ Jeep Gladiator JT, both built around the 3.6L Pentastar engine on JL and JT chassis codes. On the Wrangler side, coverage spans Sport and Sport S (2018–2026), Rubicon (2018–2026), Willys (2021–2026), Willys Sport (2021–2024), and Sahara (2023–2026), along with Wrangler Unlimited Rubicon (2018–2025) and Wrangler Unlimited Sahara (2018–2023), plus special editions such as the 80th Anniversary, Freedom, and Islander (2021) and High Altitude and High Tide models (2022–2023). On the Gladiator side, it fits Sport, Sport S, Rubicon, and Mojave (2020–2026), Willys and Texas Trail (2021–2026), Overland (2020–2023), and additional trims including High Altitude (2021–2023) and NightHawk (2024–2025).
Features
- Direct-fit for 2018+ Jeep Wrangler JL 3.6L and 2020+ Jeep Gladiator JT 3.6L
- Dyno-proven gains of up to 10.8 hp and 11.4 lb-ft of torque
- Increases airflow by up to 36-percent over the stock intake
- Precision-engineered, rotational-molded intake tube and upper airbox
- Dyno-tested resonator keeps power delivery in the usable RPM range
- Dry washable filter can be cleaned and reused
- Retains the stock lower airbox and mounting points for easy installation
- Installs in about 1 hour
- Covered by the Mishimoto Lifetime Warranty
- Patent US No. D956,818 S
Specifications
- Brand: Mishimoto
- Part Number: MMAI-JLP-18SDW
- Product Type: Air Intake System
- Engine Code: 3.6L Pentastar
- Chassis Codes: JL, JT
- Filter Material: Multi-layered cotton
- Filter Color: White
- Air Filter Part Number: MMAF-38672SDW
- Hose Material: Polyethylene
- Hose Color: Black
- Overall Color: Black
- Grade Type: Performance
- CARB Executive Order: D-759-9, currently covering model years 2018–2020 (as tested with the oiled filter)
- Includes: (1) Precision Rotational-Molded Intake Tube, (1) Precision Rotational-Molded Upper Airbox, (1) High-Flow Air Filter (Model #38672SDW), (1) Silicone Coupler, (2) Worm Gear Clamps, Mishimoto Lifetime Warranty
Frequently Asked Questions
What vehicles fit the Mishimoto MMAI-JLP-18SDW intake?
This intake is designed for the 2018+ Jeep Wrangler JL and 2020+ Jeep Gladiator JT, both equipped with the 3.6L Pentastar engine, covering trims such as Sport, Sport S, Rubicon, Sahara, Willys, and Mojave across their listed model years.
How much airflow and power does this intake add?
Mishimoto’s dyno testing shows up to 36-percent more airflow than the stock intake, resulting in proven gains of 10.8 hp and 11.4 lb-ft of torque.
Does this intake use an oiled or dry filter?
This MMAI-JLP-18SDW version comes with a dry washable filter (model MMAF-38672SDW); Mishimoto also offers this intake with an oiled filter option.
How long does installation take, and does it require modifying the airbox?
Installation takes about 1 hour, and the intake retains the stock lower airbox and mounting points, so no permanent modifications are needed.
Is this intake covered by a warranty?
Yes, it’s backed by the Mishimoto Lifetime Warranty; filter re-oiling for oiled filter versions is not included in that warranty.
What does the CARB Executive Order cover?
Executive Order D-759-9 currently covers model years 2018–2020, as tested with the oiled filter.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
