For 1999-2004 JEEP Grand Cherokee 4.7L V8 2000-2002 Dodge Durango 3.7L V6 Air Intake Kit

Compatible Vehicles:

Note: Please verify your engine type before purchase. This kit is designed for the 4.7L V8 (Jeep) and both 3.7L V6 / 4.7L V8 (Dodge) engines.

1999–2004 Jeep Grand Cherokee 4.7L V8 & Dodge Durango / Dakota Air Intake Kit FAQs

Q1: Which Jeep and Dodge models and engines does this air intake kit fit?

A1: It fits 1999–2004 Jeep Grand Cherokee models with the 4.7L V8, and select 2000–2002 Dodge Durango and Dakota applications with the 3.7L V6 or the 4.7L V8. Throughout those Jeep model years the engine covered is the 4.7L V8, including applicable 4.7L High Output models; if your vehicle has an aftermarket throttle body or a previous intake modification, compare the factory intake connections and the under-hood layout with the product images first. Because Dodge engine availability varied by model year and model, verify the VIN, engine displacement, throttle-body connection and factory intake layout before ordering.

Q2: Does this kit fit a Jeep Grand Cherokee with the 4.0L inline-six, or a Durango / Dakota with a different engine?

A2: No. This kit covers the 4.7L V8 in the Grand Cherokee, not the 4.0L inline-six — the two engines use different throttle-body positions, intake routing, hose connections and mounting points, so an intake built for the 4.0L is the correct choice rather than modifying this kit. On the Dodge side, do not select this kit from the model year alone; engine availability changed across 2000–2002, so confirm your engine first.

Q3: Is this a cold air intake or a short ram intake?

A3: This is an open-element, twin-filter intake. Both filters sit open in the engine bay on an aluminum Y-pipe, and the kit does not include a sealed airbox or a heat shield. A true cold air intake uses a sealed enclosure that draws air from outside the engine bay; open-element kits like this one are the shorter, simpler, more audible route. If you are weighing the two styles, read what a cold air intake is and how it differs from an open-element intake before you order.

Q4: What does the dual-filter design actually do for me?

A4: The Y-pipe feeds two dry conical filters instead of one, which increases the total filter surface area and gives the engine-bay a distinct twin-filter look. The larger combined surface area can reduce restriction while both filters are clean. Real-world airflow still depends on filter condition, intake temperature, pipe routing and how much air your engine demands.

Q5: How much horsepower will this add, and is it worth it on a stock 4.7L?

A5: Expected output range: on a mostly stock 4.7L V8 or 3.7L V6, typical intake-only gains run approximately +5–15 hp, and the most noticeable change is usually a stronger induction note and sharper throttle response rather than a dramatic jump in peak power. Results depend on engine condition, exhaust flow, ambient temperature, fuel, ECU adaptation and testing method. On a stock Grand Cherokee it is worth it for the owners who want a louder V8 intake note, reusable filters, simplified intake tubing and a custom engine-bay look — treat it as a sound, appearance and throttle-response upgrade rather than a major power modification. For how these numbers are measured, see how much horsepower a cold air intake adds.

Q6: Do I need an ECU tune after installing this kit?

A6: No. No ECU tune is required for this bolt-on kit, and a compatible vehicle should run on the factory calibration when all sensors, breather hoses, couplers and clamps are installed correctly. A tune may support other major modifications, but it should not be used to compensate for an intake leak or an incorrectly installed sensor. If you are already planning a tune, the same reasoning is covered in do you need a tune for a cold air intake.

Q7: Can this intake cause a check engine light, rough idle or hesitation?

A7: A correctly installed intake should not normally cause these. Common installation-related causes are a loose coupler, a disconnected breather hose, a damaged intake-air-temperature sensor, incorrect sensor placement, or an air leak near the throttle body. If a warning light appears, read the diagnostic code and inspect every intake connection before replacing parts.

Q8: Does this kit include a heat shield?

A8: No — the filters are open to the engine bay. Intake temperatures can rise while the vehicle is idling or moving slowly, and they improve once you are moving, but owners in hot climates should keep realistic expectations about heat soak. The behaviour behind this is explained in normal intake air temperature at idle and the heat-soak test.

Q9: Is the intake safe in rain, mud or deep water crossings?

A9: Normal rain is not a problem when both filters are securely mounted and protected by the hood and bodywork. The open filters should never be submerged or exposed to deep water, because drawing liquid water into the engine can cause severe damage. For frequent water crossings or very dusty trails, the sealed factory airbox offers better environmental protection.

Q10: Are the two red filters washable and reusable?

A10: Yes. Both are dry cotton-gauze filters that are washable, reusable and need no oil. Recommended inspection and cleaning is approximately every 10,000–15,000 miles, with shorter intervals in dusty conditions. Use low-pressure compressed air or mild soap and water, then let both filters dry completely before reinstalling them — the full process is in how to clean your cold air intake filter, step by step.

Q11: What parts are included with the intake kit?

A11: The box contains a black powder-coated aluminum Y-pipe (φ89mm × 550mm), two red dry air filters (top φ89mm, base φ118mm, height 130mm, total 158mm), a breather hose (D16–d11 × 510mm), a reducer coupler, a straight coupler, two narrow-band hose clamps, a filter clamp and the installation hardware.

Q12: How difficult is the installation, and what should I check afterwards?

A12: Allow about 45–60 minutes using common hand tools; the kit replaces the factory airbox and intake hose without cutting or drilling. Identify every hose and sensor before removing the original system, and keep the factory intake until the new kit has been test-fitted. Afterwards, confirm that both filters are secure, every clamp is tight, the breather hose is connected and the Y-pipe does not contact hot or moving components. Start the engine and listen for hissing, whistling or an unstable idle, then recheck the couplers and mounting hardware after a short test drive and several heat cycles.

Q13: Is this air intake legal in my state?

A13: This kit does not carry a CARB Executive Order number, so it is not legal for sale or use in California (and other CARB-adopting states). If you live elsewhere, check your state and local emissions requirements for the vehicle you are modifying before you order.

Q14: Will this void my factory warranty?

A14: Under the Magnuson-Moss Warranty Act, an aftermarket part cannot void your factory warranty unless it is proven to have caused the failure. This kit is designed as a direct bolt-on replacement that keeps the factory sensors and connections.

Q15: Will this air intake improve my fuel mileage?

A15: Fuel economy is dominated by driving habits, and an intake alone can't guarantee a measurable gain. Expect the main benefits to be throttle response and intake tone rather than fuel economy.