MERCRUISER 35602-34220 Alpha Harmonic Balancer Pulley Hub 120HP 2.5L

( Brand: Mercruiser ), ( Part Type: Balancer Hub ), ( Manufacturer Part Number: 35602-34220 )

Review MERCRUISER 35602 34220 Alpha One 120hp 2.5l Harmonic Balancer Pulley Hub

Introducing the Mercruiser 35602-34220 Alpha 120hp 2.5L Harmonic Balancer Pulley Hub, a crucial component for your Mercruiser marine engine. This pulley hub is specifically designed for the Alpha 120hp 2.5L engine, ensuring a perfect fit and optimal performance.

The hub is engineered with a robust and durable design, featuring a high-quality cast aluminum construction. This material not only provides exceptional strength and rigidity but also offers excellent corrosion resistance, making it ideal for the harsh marine environment.

At the heart of this pulley hub is a harmonic balancer that helps to reduce engine vibrations and improve overall engine efficiency. The balancer is designed with a rubber damper that absorbs and dampens engine harmonics, resulting in a smoother and quieter operation.

The pulley hub comes with a total of six pulleys, each with a diameter of 2.1 inches (53mm), providing ample space for attaching various engine accessories such as belts for the water pump, alternator, and power steering system. The pulleys are precision machined for a perfect fit and balanced to minimize vibration and ensure reliable operation.

The hub is also equipped with a 170mm (6.69 inches) diameter, single-groove, V-ribbed drive belt pulley, which is designed to accommodate a V-ribbed drive belt. The V-ribbed design provides superior belt grip and longer belt life compared to traditional flat belts.

Installation of the pulley hub is a straightforward process, with clear installation instructions provided in the packaging. The hub is also compatible with various Mercruiser engine models, making it a versatile and practical addition to your marine engine setup.

In conclusion, the Mercruiser 35602-34220 Alpha 120hp 2.5L Harmonic Balancer Pulley Hub is an essential component for optimizing the performance and efficiency of your Alpha 120hp 2.5L Mercruiser marine engine. Its durable construction, reliable operation, and easy installation make it an excellent choice for boat owners and marine engineers alike.

Mercruiser Alpha 120hp 2.5L Harmonic Balancer Pulley Hub: A Comprehensive Analysis

The Mercruiser 35602-34220 Alpha 120hp 2.5L Harmonic Balancer Pulley Hub is a crucial component in the operation of Mercruiser engines. It helps maintain proper engine balance and reduce vibrations. However, like any other purchase, it comes with its pros and cons. In this analysis, we will explore both sides to help you make an informed decision.

1. Superior Engine Performance: The pulley hub ensures optimal engine performance by maintaining the correct balance and reducing vibrations. This leads to smoother operation and improved fuel efficiency.

2. Durability: Mercruiser is known for its robust and reliable components. The harmonic balancer pulley hub is no exception. It is built to withstand the rigors of marine use, ensuring long-lasting performance.

3. Easy Installation: The pulley hub is designed for easy installation. It comes with clear instructions, and most users can complete the process in under an hour.

4. OEM Quality: By purchasing the OEM (Original Equipment Manufacturer) part, you can be assured of its compatibility with your engine and its quality.

1. Cost: The OEM part can be more expensive than aftermarket alternatives. However, the superior quality, durability, and ease of installation may justify the cost for some users.

2. Availability: Due to its OEM status, the part may not be as readily available as aftermarket alternatives. This could result in longer wait times for repairs or replacements.

3. Weight: The pulley hub adds weight to the engine, which could affect its overall performance. However, the benefits of reduced vibrations and improved engine balance typically outweigh the minimal weight increase.

In conclusion, the Mercruiser 35602-34220 Alpha 120hp 2.5L Harmonic Balancer Pulley Hub is an essential component for maintaining optimal engine performance and reducing vibrations in Mercruiser engines. While it comes with a higher cost compared to aftermarket alternatives, its superior quality, durability, and ease of installation may justify the investment for boat owners who prioritize reliability and smooth operation.

If you are a Mercruiser engine owner and are experiencing vibrations or seeking to prevent potential engine issues, we recommend considering the Mercruiser 35602-34220 Alpha 120hp 2.5L Harmonic Balancer Pulley Hub as a worthwhile investment. Its benefits far outweigh the potential drawbacks, ensuring a smoother, more efficient, and more enjoyable boating experience.

Details:

Removed from a 1984 MerCruiser 2.5L. Includes the screws to mount pulley hub. Pulley Reads 3793716BW. Used from 1982 1989 on MerCruiser 2.5L 120hp 4cyl power plants Only3.0L 140hp model's used an actual Harmonic Balancer, so this is not compatible with those model's.

MerCruiser 35602 34220 Alpha One 120hp 2.5L Harmonic Balancer Pulley Hub: Item Details. These are used parts. Used parts may have cosmetic issues scratches, missing paint, faded plastic, pitting, rust, minor dents dings, etc. The condition of this item is as described in the and visible picture. The compatibility statements or suggestions in this listing is my best guess based on the quick research we did for item.

part #: 3560234220 prices

• $39.99-$50.00

specifications vesselveep:

• brand: Mercruiser
• part type: Balancer Hub
• manufacturer part number: 35602-34220

returns vesselveep:

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

offer vesselveep:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: May 4, 2026
• availability: In Stock

shipping vesselveep:

• class: Standard, Expedited
• carrier: USPS
• service: USPS Ground Advantage, USPS Priority Mail
• type: Fixed
• transit: 4-8 Days
• cost: $11.85

payments vesselveep:

• wallet: Google-pay
• credit card: Diners-club
• other

general vesselveep:

• condition: Used
• Parts Accessories > Boat Parts > Other

seller vesselveep:

• rating: 100.0%
• city: Byron Center, Michigan
• # reviews: 5796

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