ACURA 37820-RYE-A85 Engine 37820-RYE-A86

( Type: Engine Control Unit ), ( Manufacturer Warranty: 30 Day Warranty ), ( Manufacturer Part Number: 37820-RYE-A85 )

Review ACURA Used Oem Engine Computer fits MDX 2011

The Acura MDX 2011 3.7 Liter V6 Engine, specifically identified by the part numbers 37820-RYE-A85 (for automatic transmission) and 37820-RYE-A86 (for manual transmission), is a sophisticated powertrain that delivers exceptional performance and fuel efficiency. This engine is a key component of the MDX's refined driving experience, providing ample power for everyday use and dynamic handling.

The 3.7-liter engine boasts a SOHC i-VTEC design, which allows for variable valve timing and lift on both the intake and exhaust camshafts. This innovative technology optimizes engine performance across the entire RPM range, delivering maximum power and torque while maintaining excellent fuel economy.

The engine's displacement is 3694cc, and it produces a peak horsepower of 300 at 6300 RPM and a peak torque of 273 lb-ft at 4700 RPM. This translates to impressive acceleration and passing power, making the MDX a capable and responsive vehicle.

The engine block is made of aluminum to reduce weight and enhance durability. It features a cast-iron cylinder liner for added strength and protection against thermal stress. The engine also utilizes a compacted graphite iron crankshaft, which provides superior rigidity and durability.

The engine's cooling system is designed to ensure optimal operating temperature, featuring a thermostatically controlled cooling fan and a large, efficient radiator. The cooling system also includes a pressure-tested, maintenance-free cooling system.

The MDX's 3.7-liter engine is also equipped with an electronic fuel injection system, which delivers precise fuel delivery for improved combustion efficiency and reduced emissions. The engine also utilizes a Variable Cylinder Management (VCM) system, which can deactivate cylinders under light load conditions to save fuel and reduce emissions.

The engine's oiling system includes a variable capacity oil pump, which adjusts oil flow based on engine speed and load to ensure optimal engine lubrication and efficiency. The engine also features an engine mount with a viscous damper, which helps to reduce engine vibration and improve ride quality.

Overall, the Acura MDX 2011 3.7 Liter V6 Engine is a highly advanced powertrain that delivers impressive performance, excellent fuel economy, and exceptional durability. Its sophisticated design and innovative technologies make it a standout choice for those seeking a refined and capable driving experience.

Acura MDX 2011 3.7L V6 Engine (37820-RYE-A85 vs. 37820-RYE-A86): A Comprehensive Analysis

The Acura MDX is a popular midsize SUV known for its reliability, performance, and luxury features. The 2011 model comes with two different variants of its 3.7L V6 engine, the 37820-RYE-A85 and the 37820-RYE-A86. In this analysis, we will discuss the key differences, pros, and cons of each engine to help you make an informed decision.

Both engines are 3.7L V6 units with similar specifications. However, they differ in their emission control systems. The 37820-RYE-A85 is equipped with the i-VTEC system, while the 37820-RYE-A86 incorporates the i-VTEC and PGM-FI systems.

1. Pro: Smoother Operation: The i-VTEC system in the 37820-RYE-A85 engine provides a more linear power delivery and smoother operation.

2. Con: Higher Fuel Consumption: Due to its less efficient emission control system, the 37820-RYE-A85 may consume more fuel compared to its counterpart.

3. Pro: Better for Modifications: The i-VTEC system is more suitable for modifications, providing better tuning potential for those looking to enhance engine performance.

1. Pro: Improved Fuel Efficiency: The PGM-FI system in the 37820-RYE-A86 engine helps improve fuel efficiency by optimizing fuel injection and combustion.

2. Con: Less Responsive: The 37820-RYE-A86 engine may feel less responsive due to its focus on fuel efficiency over raw power.

3. Pro: Longer Engine Life: The more efficient emission control system in the 37820-RYE-A86 engine may contribute to a longer engine life.

Both engines have their unique advantages and disadvantages. If you prioritize raw power and tuning potential, the 37820-RYE-A85 engine may be the better choice. However, if you are more concerned with fuel efficiency and engine longevity, the 37820-RYE-A86 engine might be the more suitable option for you.

Ultimately, the decision between the two engines depends on your personal preferences and driving priorities. If you value performance and modification capabilities, go for the 37820-RYE-A85 engine. Otherwise, if fuel efficiency and engine life are your main concerns, consider the 37820-RYE-A86 engine.

Details:

Usually late model vehicles may need to be program. PLEASENOTE: these units are bought by part number only.

part #: 37820ryea85 prices

• $76.49-$192.58

specifications ecusrush:

• for models: Mdx
• for makes: Acura
• for years: 2011
• type: Engine Control Unit
• manufacturer warranty: 30 Day Warranty
• manufacturer part number: 37820-RYE-A85

offer ecusrush:

• started: June 16, 2025
• options: Ship-to-home
• quantity: 1
• best offers: True
• availability: In Stock
• sold: 0

seller ecusrush:

• # reviews: 2758
• rating: 99.2%
• city: Gardena, California

payments ecusrush:

• other
• credit card: Mastercard
• wallet: Apple-pay

shipping ecusrush:

• service: USPS Priority Mail Flat Rate Envelope
• transit: 4-8 Days
• cost: $0.00
• class: Expedited
• type: Fixed
• carrier: USPS

returns ecusrush:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

general ecusrush:

• condition: Used
• Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > ECUs Computer Modules

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