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  3. MARINEPRO 89984T4

MARINEPRO 89984T4 Mr Alpha Impeller Water Pump R/mr/alpha

fits model: Mercruiser. year: 1970–1990.

89984t4 Marinepro Mercruiser I R/mr/alpha 1970-1990 Impeller Water Pump

( Brand: Marinepro ), ( Manufacturer Part Number: 89984T4 ), ( Part Type: Impeller Pump ), ( Replaces: F694065, 18-3017, 30221, 65960, 8m0028376, 803631t )

Review MARINEPRO R/mr/alpha Impeller Water Pump fits MERCRUISER 1970–1990

The MarinePro 89984T4 impeller water pump is a high-performance replacement option for Mercruiser R/MR Alpha engines used between the years 1970 and 1990. This pump is specifically engineered to deliver superior cooling capacity and extended durability to ensure optimal engine performance.

The impeller is designed with a robust, cast-iron housing that is resilient against the harsh marine environment. The impeller itself is made from a high-strength, thermoplastic material that offers excellent resistance to corrosion and erosion. The pump's volute is precision-machined to ensure efficient water flow, while the impeller blade design offers excellent pumping capacity for optimal engine cooling.

The MarinePro 89984T4 water pump also features an oversized, fiber reinforced impeller shaft that provides increased strength and durability. The pump's bearings are sealed for leak-free operation, and the pump includes a new gasket kit for a hassle-free installation.

The pump's inlet and outlet sizes are 1.5 inches, and it comes with a 1.5-inch suction and discharge hose. The included pulley is made of cast iron, and the pump's belt size is 2.5 inches. The MarinePro 89984T4 impeller water pump is compatible with Mercruiser R/MR Alpha engines, including those with serial numbers starting with "R" or "M."

In summary, the MarinePro 89984T4 impeller water pump is a high-performance, durable replacement option for Mercruiser R/MR Alpha engines used between 1970 and 1990. Its robust design, efficient water flow, and leak-free operation make it an excellent choice for boat owners looking to maintain optimal engine performance and extend the life of their engine.

Pros and Cons of Buying a Marine-Pro 89984T4 Mercruiser R/MR Alpha Water Pump for 1970-1990 Models

Introduction:

The Marine-Pro 89984T4 Mercruiser R/MR Alpha water pump is a popular choice among boat owners for its durability, reliability, and impressive performance. However, like any other purchase, it comes with its advantages and disadvantages. In this analysis, we will discuss both the pros and cons of buying this water pump to help you make an informed decision.

Pros:

1. High Performance: The Marine-Pro 89984T4 Mercruiser R/MR Alpha water pump has a unique impeller design that delivers superior flow rates and pressure. This results in efficient cooling and improved overall performance of your marine engine.

2. Durability: Constructed from heavy-duty materials, this water pump is built to withstand the harsh marine environment. Its corrosion-resistant housing and impeller make it an excellent long-term investment.

3. Easy Installation: The pump's simple installation process saves time and effort. Its universal fitment for Mercruiser R/MR Alpha engines from 1970 to 1990 makes it a versatile option for boat owners.

4. Quiet Operation: The Marine-Pro 89984T4 water pump operates quietly, ensuring a more enjoyable boating experience. This is particularly important for those who use their boats for extended periods or for fishing and other quiet activities.

Cons:

1. Cost: Compared to other aftermarket water pumps, the Marine-Pro 89984T4 Mercruiser R/MR Alpha model can be quite expensive. This may deter some buyers on a tight budget.

2. Availability: Due to its popularity, this water pump may be harder to find in local stores. You might need to order it online, which could lead to longer wait times.

3. Replacement Costs: Although the Marine-Pro water pump is durable, it may still require maintenance, including impeller replacements. These replacement parts can be costly, adding to the overall expense of owning this pump.

Conclusion:

The Marine-Pro 89984T4 Mercruiser R/MR Alpha water pump offers several advantages, such as high performance, durability, easy installation, and quiet operation. However, it also comes with disadvantages, like its relatively high cost and potential difficulty in finding it locally. While the cost may be a concern for some buyers, the excellent performance, durability, and quiet operation make it a worthwhile investment for boat owners who prioritize these features.

Recommendation:

If you are a boat owner with a Mercruiser R/MR Alpha engine from 1970 to 1990 and are looking for a reliable, high-performing water pump, the Marine-Pro 89984T4 model is an excellent choice. Despite its higher cost, its superior features and benefits make it a valuable addition to your boat. However, if you are on a tight budget, you may want to consider other aftermarket water pump options that offer similar performance but at a lower cost.

Details:

Manufacturer PN: 89984T4. Condition: New. HAZARDOUS PRODUCTS HAZMAT: 1 Carriers charge extra to ship packages with products they consider hazardous, such as oils, paints, and primers. Below the price of item.

We answer questions quickly. Replaces: F694065, 18-3017, 30221, 65960, 8M0028376, 803631T. Mercruiser I R/MR/Alpha 1970-1990 89984T4 Impeller Water Pump MarinePro: Thumbnails to: PRODUCT SPECIFICATIONS: Brand: MarinePro.

part #: 89984t4 price

  • $13.79

specifications intengster:

  • for models: Mercruiser
  • for years: 1970-1990
  • brand: Marinepro
  • mpn: 89984t4
  • part type: Impeller Pump
  • replaces: F694065, 18-3017, 30221, 65960, 8m0028376, 803631t

seller intengster:

  • rating: 99.5%
  • # reviews: 78270
  • city: Hollywood, Florida

payments intengster:

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

offer intengster:

  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • started: May 2, 2026

shipping intengster:

  • class: Standard, Expedited
  • service: USPS First Class, USPS Priority Mail, UPS Ground, USPS Priority Mail Express
  • type: Calculated
  • transit: 5-12 Days
  • carrier: USPS, UPS
  • cost: $8.13

general intengster:

  • condition: New
  • Boat Parts > Sterndrive Motors Components > Internal Engine Parts

returns intengster:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller
for models: mercruiser, for years: 1970-1990, part type: impeller pump, replaces: f694065, 18-3017, 30221, 65960, 8m0028376, 803631t,
category: boat parts > sterndrive components > internal engine parts, sku: 2350034858019603,
Marinepro 89984T4 Is Similar To:
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  • New. Offer #2 priced at $13.79 + $8.13 shipping estimate = $21.92* total. (1) Open software. Manufacturer PN: .+$8.13 shipping

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