Jeep Grand Cherokee Performance Parts & HEMI Upgrades

Get more power and capability from your SUV with our complete selection of Jeep Grand Cherokee performance parts. From the 3.6L Pentastar V6 to the 5.7L HEMI, the 6.4L 392 SRT, and the supercharged 6.2L Trackhawk, MMX Power Parts stocks the cold air intakes, ported throttle bodies, intake manifolds, long-tube headers, fuel injectors, and interior upgrades that unlock real horsepower and elevate your driving experience. Every part is hand-selected from the brands enthusiasts trust and backed by our team of HEMI specialists, so you can upgrade with total confidence.

Why Upgrade Your Jeep Grand Cherokee?

The Jeep Grand Cherokee — especially the WK2 platform that underpins the SRT and Trackhawk — shares its Gen III HEMI architecture with the Charger, Challenger, Durango, and Chrysler 300. That makes it a natural fit for proven bolt-on upgrades. Adding airflow, improving exhaust flow, and dialing in fuel delivery transforms throttle response and adds usable horsepower and torque for daily driving, towing, and weekend fun. Our Jeep Grand Cherokee aftermarket parts make it easy to build exactly what you want.

Popular Jeep Grand Cherokee Upgrades In Stock

• Cold Air Intakes — The aFe Cold Air Intake for the 5.7L HEMI (2011–2023) and aFe Momentum GT 6.4L intakes boost airflow and tone.
• CNC Ported Throttle Bodies — The 2005–2012 HEMI 87mm CNC Ported Throttle Body by MMX sharpens throttle response.
• Long-Tube Headers — Kooks WK2 5.7L HEMI headers and Stainless Works SRT8 WK headers maximize exhaust flow and power.
• Intake Manifolds — Holley single-plane GEN III HEMI manifolds, the MMX 5.7L-to-6.4L swap kit, and ported 3.6L Pentastar manifolds (EGR equipped).
• High-Flow Fuel Injectors — 1000cc and 1200cc HEMI injectors by Fuel Injector Clinic for high-horsepower and boosted builds.
• Interior Protection — 3D MAXpider ACE Elegant floor mats keep your Grand Cherokee looking its best.

Quality Parts For Every Grand Cherokee Engine

We carry components engineered for the 3.6L Pentastar V6, the 5.7L HEMI, the 6.4L 392 HEMI SRT, and the 6.2L Supercharged Trackhawk across the 2011–2023 WK2 generation and earlier WK models. Each Jeep Grand Cherokee HEMI part is chosen for precise fitment, durability, and measurable performance you can feel.

Technical Specifications & Fitment

• Compatible Engines: 3.6L Pentastar V6, 5.7L HEMI, 6.4L 392 HEMI SRT, 6.2L Supercharged Trackhawk
• Model Years Covered: 2006–2023 (varies by part — confirm fitment by year and engine)
• Brands: aFe Power, MMX, Kooks, Stainless Works, Holley, Fuel Injector Clinic, 3D MAXpider
• Part Types: Cold air intakes, throttle bodies, long-tube headers, intake manifolds, fuel injectors, floor mats

Shop With Confidence At MMX Power Parts

Every order ships fast and is backed by authentic parts and genuine enthusiast support. Building across the Mopar family? Explore our Dodge Durango parts, Dodge Charger parts, and Dodge Challenger parts collections, or learn more about the platform from this Jeep Grand Cherokee overview.

Ready to upgrade your Grand Cherokee? Browse the full selection below and order your Jeep Grand Cherokee performance parts today — in stock and ready to ship.