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  3. MERCURY 46-847710

MERCURY 46-847710 Water Pump Housing Kit T1

fits make: Mercury.

46-847710 Mercury Water Pump Housing Kit Oem T1

( Manufacturer Part Number: 46-847710 ), ( Part Type: Pump Housing ), ( Country Of Origin: United States )

Review MERCURY Water Pump Housing Kit Oem T1

The **Mercury 46-847710 Water Pump Housing Kit (T1)** is a precision-engineered, high-performance replacement component designed specifically for Mercury outboard motors, ensuring optimal cooling efficiency and longevity for your engine. This housing kit is meticulously crafted to fit seamlessly into the T1 series of Mercury outboards, providing a robust and reliable solution for those seeking to restore or upgrade their water pump assembly. Constructed from durable marine-grade materials, the kit includes a reinforced housing, a high-flow impeller, and a precision-machined shaft assembly, all engineered to withstand the demanding conditions of saltwater and freshwater environments. The housing itself is designed with a tight seal to prevent leaks, while its aerodynamic shape minimizes turbulence, allowing for smoother water flow and reduced strain on the engine. This kit is ideal for both professional mechanics and DIY enthusiasts looking to perform a thorough maintenance upgrade, as it includes all necessary components such as gaskets, seals, and mounting hardware to ensure a clean and efficient installation. Whether replacing a worn-out pump due to corrosion, mechanical failure, or routine maintenance, the **46-847710 kit** delivers the performance and durability required to keep your Mercury outboard running at peak efficiency for years to come. Its compatibility with the T1 series ensures a perfect fit, reducing the risk of misalignment or improper function, while its robust construction helps resist the harsh effects of prolonged exposure to saltwater, making it a smart investment for both freshwater and saltwater applications.

The **Mercury 46-847710 Water Pump Housing Kit (T1)** is designed for specific Mercury outboard motors, particularly the T1 series (e.g., 90 HP, 115 HP, 150 HP). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Mercury 46-847710 Water Pump Housing Kit**

1. **OEM Quality and Compatibility**

The kit is manufactured by Mercury Marine, a trusted brand known for high-quality marine parts. It is designed to fit specific T1 series engines precisely, reducing the risk of misalignment or improper installation. This ensures better performance and longevity compared to aftermarket alternatives that may not match OEM specifications.

2. **Durability and Performance**

Mercury s components are built to withstand the demands of marine environments, including saltwater corrosion, vibration, and thermal stress. A properly installed water pump housing kit helps maintain optimal cooling and lubrication for the engine, preventing overheating and extending the life of internal components.

3. **Ease of Installation**

The kit typically includes clear instructions and may come with gaskets, bolts, and other necessary hardware. For those with basic mechanical skills or access to a marine mechanic, replacing the water pump housing can be a manageable DIY project. Mercury s designs often prioritize user-friendly assembly to minimize downtime.

4. **Prevents Leaks and Damage**

A failing water pump housing can lead to coolant leaks, which can damage the engine s impeller, seals, or even the lower unit. Replacing the housing as part of routine maintenance or when symptoms (e.g., overheating, unusual noises) arise can prevent costly repairs down the line.

5. **Warranty Coverage**

Purchasing directly from Mercury or an authorized dealer may include warranty protection, offering peace of mind in case of defects. This is particularly valuable if the kit is installed by a professional.

6. **Compatibility with Upgrades**

If you plan to upgrade other components (e.g., impellers, seals, or cooling systems), this housing kit ensures that the new parts integrate seamlessly with your engine s existing setup.

7. **Long-Term Cost Savings**

While the upfront cost may be higher than some aftermarket options, investing in a Mercury kit can save money in the long run by avoiding frequent replacements or damage to other engine parts.

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### **Cons of the Mercury 46-847710 Water Pump Housing Kit**

1. **Higher Cost Compared to Aftermarket Alternatives**

Mercury s OEM parts are premium-priced, which may be a barrier for budget-conscious buyers. Aftermarket brands (e.g., Seafoam, Mercruiser-compatible kits, or generic marine suppliers) often offer similar or identical parts at a lower cost. However, quality and longevity may vary significantly.

2. **Limited Availability Outside Authorized Dealers**

While Mercury parts are widely available at marine dealerships, some smaller or online retailers may not stock this specific kit. Purchasing from unauthorized sellers could risk counterfeit or incompatible parts. Always verify the seller s reputation and authenticity.

3. **Installation Complexity for Non-Mechanics**

Replacing a water pump housing requires removing the lower unit, draining coolant, and ensuring proper alignment. While the process is manageable for experienced DIYers, those without mechanical knowledge may struggle or risk damaging the engine. Professional installation adds labor costs, which can offset the savings of buying aftermarket parts.

4. **Potential for Overkill for High-Mileage or Older Engines**

If your engine is very old or has significant wear, replacing just the housing may not address underlying issues (e.g., cracked impellers, corroded seals, or internal damage). In such cases, a more comprehensive overhaul might be necessary, making the kit less cost-effective.

5. **Part-Specific Fitment**

This kit is **exclusively for T1 series Mercury outboards** (e.g., 90 HP, 115 HP, 150 HP). Attempting to use it on non-T1 models (e.g., T2, T3, or other brands like Yamaha or Suzuki) will result in incompatibility. Always double-check your engine s model before purchasing.

6. **Environmental and Storage Considerations**

Mercury parts, like all marine components, are sensitive to moisture and contamination. If stored improperly (e.g., in damp conditions or without protective packaging), the kit could degrade before installation. Buyers must handle and store it carefully.

7. **Potential for Misdiagnosis of Symptoms**

Some engine issues (e.g., overheating, strange noises) may not necessarily require a water pump housing replacement. Without proper diagnosis (e.g., checking coolant levels, impeller condition, or thermostat function), buyers might unnecessarily spend on this kit when another part is at fault.

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### **Conclusion**

The **Mercury 46-847710 Water Pump Housing Kit** is a high-quality, reliable choice for owners of compatible T1 series outboards. Its OEM status ensures compatibility, durability, and peace of mind, making it ideal for those prioritizing long-term performance and avoiding engine damage. However, the higher cost and potential complexity of installation may not justify the purchase for every buyer, especially if budget constraints or lack of mechanical experience are factors.

For **budget-conscious buyers** or those with non-T1 engines, aftermarket alternatives (e.g., Seafoam or other reputable brands) could offer comparable performance at a lower price, provided they are verified for compatibility. Conversely, **serious boaters, performance enthusiasts, or those with warranty concerns** will likely benefit most from investing in the Mercury kit.

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### **Recommendation**

- **Buy the Mercury 46-847710 Kit If:**

- You own a **T1 series Mercury outboard** (90 HP, 115 HP, or 150 HP).

- You are experiencing **overheating, coolant leaks, or unusual noises** from the water pump area.

- You value **OEM quality, warranty coverage, and long-term reliability**.

- You have **basic mechanical skills** or plan to use a professional for installation.

- You are open to the **higher upfront cost** in exchange for peace of mind and durability.

- **Consider Aftermarket Alternatives If:**

- You are on a **tight budget** and can verify the aftermarket kit s compatibility (e.g., Seafoam or other Mercury-compatible brands).

- Your engine is **older or high-mileage**, and you suspect other issues may exist.

- You are **not confident in DIY installation** and would prefer a lower-cost option with professional help.

- You are unsure whether the housing is the root cause of your engine s problems (get a diagnosis first).

- **Additional Tips:**

- Always **consult your engine s manual** or a Mercury Marine specialist to confirm the exact model and compatibility.

- Pair the replacement with **new gaskets, seals, and coolant** to ensure a leak-free installation.

- If in doubt, **seek professional advice** before purchasing to avoid unnecessary expenses.

- Store the kit in a **dry, clean environment** to prevent damage before installation.

Details:

All of these reference the same Large Tube housing. These three components belong together as a set for proper sealing and impeller geometry in the large tube configuration. Mercury has cataloged this same housing under several equivalent OEM part numbers over the years. I ordered the wrong part and trying to recoup some of my money.

It applies to the Mercury Hi-Pref and Racing 2.4 2.5 families because those engines are frequently operated at engine height propeller slip conditions where a larger water column stable volume needed. It is not a small production tube housing. This is the correct OEM configuration for Sport master and Torque master gear cases with large water tube. If the tube is significantly smaller, that small configuration which uses a different housing.

If the water tube in midsection adapter plate is approximately diameter of an adult thumb, this correct housing. The part was ordered from Buckshot 77 Racing and is new, never been installed. This housing is used on the well-known high-performance engines such as 225 Pro Max, 245 HP Carb motors, 260 ROS, 280 HP, and 300 Drag. It is the correct part for large tube water delivery system found on actual Mercury Racing 2.4-liter and 2.5-liter V6 two-stroke platforms.

This is the correct large tube also referred to as big housing used on Mercury Hi-Performance Sport master and Torque master gear cases.

part #: 46847710 prices

  • $179.67-$184.08

specifications ouboaen:

  • for makes: Mercury
  • mpn: 46-847710
  • part type: Pump Housing
  • country of origin: United States

seller ouboaen:

  • # reviews: 158
  • rating: 100.0%
  • city: Prague, Oklahoma

returns ouboaen:

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

shipping ouboaen:

  • service: USPS Ground Advantage
  • carrier: USPS
  • type: Calculated
  • class: Standard
  • transit: 5-10 Days
  • cost: $0.00

general ouboaen:

  • Boat Parts > Outboard Engines Components > Cooling Systems
  • condition: New other see details

offer ouboaen:

  • best offers: True
  • started: February 18, 2026
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 1

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for makes: mercury, part type: pump housing, country of origin: united states,
category: boat parts > outboard engines components > cooling systems, sku: 22115540243085762,
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  • New other (see details). Offer #1 priced at $179.67 + $0.00 shipping estimate = $179.67* total. FREE SHIPPING
  • New. Offer #2 priced at $184.08 + $8.13 shipping estimate = $192.21* total. HAZARDOUS PRODUCTS (HAZMAT) (4) Liquid like maintenance products.+$8.13 shipping

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