ATK ENGINES HP103 Mds 653517523342 5.7L

( Brand: Atk Engines ), ( Manufacturer Part Number: HP103 ), ( Engine Size: 5.7 Cu. In. ), ( Type: Crate Engines ), ( California Prop 65 Warning: True ), ( UPC: 653517523342 )

Review ATK ENGINES Fits Chrysler Gen 5.7l Mds fits HEMI 2003–2008

Introducing the ATK Engines HP103 MDS, a high-performing camshaft kit specifically designed for the Chrysler Gen 5.7L Hemi engine from the years 2003 to 2008. This camshaft kit, manufactured by ATK Engines, is an excellent upgrade for those seeking improved horsepower, torque, and engine response.

The HP103 MDS is engineered with a unique Multi-Displacement System (MDS) design that allows for cylinder deactivation during light load conditions, enhancing fuel efficiency without compromising power. This system is a significant advantage for daily drivers, allowing them to enjoy the benefits of both improved performance and better fuel economy.

The camshaft kit features robust, high-quality components. The intake camshaft provides greater lift and duration, resulting in improved intake flow and a more potent air/fuel mixture. The exhaust camshaft boasts increased lift and duration as well, leading to better exhaust flow and increased power output. The kit also includes new valve springs and retainers, ensuring proper valve control during increased engine performance.

The HP103 MDS is meticulously designed and manufactured to fit seamlessly into the Chrysler 5.7L Hemi engine. The kit includes all necessary hardware, making installation a straightforward process. ATK Engines' commitment to precision engineering ensures a perfect fit and smooth operation, eliminating the need for modifications or custom fabrication.

By upgrading your engine with the ATK Engines HP103 MDS, you can expect a significant boost in power and torque. Horsepower gains of up to 30 horsepower and torque improvements of up to 35 lb-ft are common, providing a noticeable improvement in engine response and overall performance.

In conclusion, the ATK Engines HP103 MDS is a top-tier camshaft kit for the Chrysler Gen 5.7L Hemi engine from 2003 to 2008. With its unique MDS design, improved camshafts, and high-quality components, this kit offers a perfect balance of power and fuel efficiency. Whether you're a daily driver looking for improved performance or a dedicated enthusiast seeking maximum horsepower, the HP103 MDS is an excellent choice for your Chrysler Hemi engine.

The Chrysler 5.7L Hemi MDS engine, produced between 2003 and 2008, was a popular choice for its power and efficiency. The Multi-Displacement System (MDS) was a significant feature that allowed the engine to deactivate cylinders under light load conditions to save fuel. Here are some pros and cons of buying an ATK Engines remanufactured HP103 (Chrysler 5.7L Hemi MDS) engine:

1. Power: The engine delivers impressive power, making it a favorite among truck and SUV owners.

2. Fuel Efficiency: The MDS system helps the engine save fuel by deactivating cylinders under light load conditions.

3. Reliability: ATK Engines is known for its high-quality remanufactured engines, ensuring durability and reliability.

4. Cost-Effective: Buying a remanufactured engine is generally more cost-effective than purchasing a new one.

1. Complexity: The MDS system is complex, which can lead to potential issues and higher maintenance costs.

2. Maintenance: The engine requires regular maintenance, including MDS solenoid replacement, to ensure optimal performance.

3. Compatibility: Ensure the engine is compatible with your vehicle's transmission and other systems before installing it.

4. Availability: Finding a remanufactured engine with the exact specifications you need might be challenging.

In conclusion, the ATK Engines HP103 Chrysler 5.7L Hemi MDS engine offers impressive power and fuel efficiency but comes with the complexity and maintenance requirements of the MDS system. Buying a remanufactured engine from a reputable supplier like ATK Engines can provide reliability and cost savings, but make sure to consider the compatibility and availability before making a purchase.

Recommendation: If you're in the market for a powerful and fuel-efficient engine for your truck or SUV and are comfortable with the additional maintenance requirements, the ATK Engines HP103 Chrysler 5.7L Hemi MDS engine could be a great choice. Ensure you purchase it from a trusted supplier to guarantee its quality and compatibility with your vehicle.

Details:

Notes: Car Truck applications WITH MDS and has Power Steering holes in front of heads. Tuning: Computer ECM Tuning required. Firing Order: Per OE Specifications.

A complete check of the fuel system is HIGHLY recommended to avoid fueling issues that can lead wash and other catastrophic failures are not covered under warranty Injectors, Pump, Filters, Etc. Bore/Stroke: 3.920 x 3.580 Bored. Stall Converter: Stock. Timing Chain: OE.

Displacement: 345CI / 5.7L. Rocker Arms: OE Shaft mount. Timing: Per OE Specifications. Oil Filter: Wiz or K N.

Block: Gen III Hemi 2003 -2008. Crankshaft: OE Cast. Part # HP103 Condition New Brand ATK Engines Sold Each Details Info Engine Specifications: HP: 400. An ECM Tune is required.

Camshaft: Comp Cams HUD.

part #: hp103 price

• $93.13

specifications grokengines:

• for models: Hemi
• for makes: Chrysler
• for years: 2003-2008
• brand: Atk Engines
• mpn: Hp103
• engine size: 5.7 Cu. In.
• type: Crate Engines
• california prop 65 warning: True
• upc: 653517523342

general grokEngines:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Engines

seller grokEngines:

• # reviews: 333535
• rating: 99.4%
• city: Lincoln, Nebraska

shipping grokEngines:

• service: Flat Rate Freight
• cost: $275.00
• class: Freight
• type: Fixed

payments grokEngines:

• other
• credit card: Discover
• wallet: Paypal

offer grokEngines:

• started: October 21, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0

returns grokEngines:

• time: 60 Days
• paid by: Buyer
• policy: Returns Accepted

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