The 2009 Jeep Grand Cherokee with the 5.7L engine features Chrysler’s HEMI V8 powerplant, officially designated as the 5.7L HEMI MDS (Multi-Displacement System). This naturally aspirated engine produces 357 horsepower and 389 lb-ft of torque. The MDS technology allows the engine to deactivate four cylinders during light load conditions to improve fuel economy. It features aluminum cylinder heads, cast iron block construction, and variable valve timing. This engine was paired with a 5-speed automatic transmission and was available in both 2WD and 4WD configurations, making it capable of towing up to 7,400 pounds when properly equipped.

The 2009 Jeep Grand Cherokee shares most parts with the 2005-2010 WK generation Grand Cherokee models. Engine components from the 5.7L HEMI are largely interchangeable across these years, though some sensors and wiring harnesses may have minor variations. Body panels, interior components, suspension parts, and most mechanical systems interchange well within this generation. Some electrical components may have different part numbers due to software updates or connector changes. The transfer case, differential, and transmission components are generally compatible across the WK generation. However, always verify specific part numbers as running changes occurred throughout production, particularly for electronic modules and sensors.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The 5.7L HEMI is generally a robust and reliable engine when properly maintained, though it has some known issues. The MDS system can cause lifter problems if oil changes are neglected, so using the correct oil viscosity and changing it every 5,000 miles is crucial. The engine itself is capable of lasting 200,000+ miles with proper care. Common maintenance items include spark plugs every 30,000 miles and regular cleaning of the throttle body. The HEMI responds well to quality fuel and benefits from occasional highway driving to keep carbon buildup minimal. While more complex than older V8s due to variable valve timing and cylinder deactivation, it offers excellent power and reasonable fuel economy for its size.