EMP 46-03638 Water Pump Impeller Housing Kit 984461 983895

( Brand: Emp ), ( Manufacturer Part Number: 46-03638 ), ( Part Type: Pump Impeller Housing )

Review EMP Omc Water Pump Impeller Kit Housing Replaces fits COBRA

The **OEM Cobra Water Pump Impeller Kit and Housing Assembly (Part Numbers: 984461, 983895, and compatible with EM 46-03638)** represents a premium, high-performance replacement solution designed specifically for marine and powerboat applications where reliability and efficiency are paramount. This meticulously engineered kit includes a robust **impeller assembly** and a precision-machined **housing unit**, both crafted to restore optimal water flow and cooling performance to your engine s cooling system. The impeller, typically constructed from durable **marine-grade aluminum or reinforced plastic**, features a carefully contoured blade design optimized for maximum water displacement and reduced cavitation, ensuring consistent cooling even under demanding operating conditions. The accompanying **housing** is engineered to fit seamlessly with your existing water pump, providing a secure seal and minimizing the risk of leaks or air ingestion, which can compromise engine performance. This kit is ideal for applications requiring **high-flow cooling**, such as outboard motors, sterndrive systems, or performance boats, where standard impellers may struggle to maintain adequate thermal management. Whether replacing a worn impeller or addressing a cooling system inefficiency, this OEM-quality assembly guarantees a tight fit, improved efficiency, and extended longevity for your water pump, ultimately contributing to smoother engine operation and reduced maintenance downtime. Built to meet original equipment manufacturer (OEM) specifications, this kit ensures compatibility with a range of Cobra-branded marine engines, delivering the same level of performance and durability as the factory components.

### **Pros and Cons of buying a OMC Cobra Water Pump Impeller Kit (Part Numbers: 46-03638, OMC 984461, 983895)**

1. **Compatibility** This kit is specifically designed for OMC Cobra engines, ensuring a proper fit without modification. It includes the impeller, housing, and necessary gaskets, making it a complete replacement solution.

2. **Performance Improvement** A worn or damaged impeller can reduce cooling efficiency, leading to overheating. Replacing it with an OEM or high-quality aftermarket part restores proper water flow, improving engine cooling and longevity.

3. **Prevents Leaks** The housing and gasket set included in the kit help seal the water pump assembly, reducing the risk of coolant leaks, which can cause electrical shorts or further engine damage.

4. **Cost-Effective Replacement** Buying a complete kit (impeller housing) is often cheaper than purchasing individual parts separately. It also ensures all components are compatible and of the same quality.

5. **Easy Installation** Since this is an OMC-approved part, it follows standard engine specifications, making installation straightforward for those with basic mechanical skills. Most users can replace it in under an hour with the right tools.

6. **Extended Engine Life** Proper water pump function is critical for preventing overheating, which can lead to severe engine damage. A new impeller ensures consistent cooling, reducing wear on the engine and other components.

7. **Warranty Coverage** If purchased from an authorized dealer or reputable supplier, the part may come with a warranty, providing peace of mind against defects.

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1. **Limited Availability** OMC parts, especially for older models like the Cobra, may not be as widely stocked as more common marine or automotive components. Purchasing may require ordering from specialty suppliers, which could extend lead times.

2. **Potential Counterfeit Parts** Buying from untrusted sellers (e.g., third-party online marketplaces) risks receiving counterfeit or low-quality replicas. Always verify the seller s reputation and part authenticity.

3. **Additional Labor Costs** While the kit is designed for easy installation, if the user lacks mechanical experience, hiring a professional mechanic may be necessary, adding to the total cost.

4. **Compatibility with Modified Engines** If the engine has been heavily modified (e.g., upgraded cooling systems, custom impellers, or aftermarket water pumps), the OMC stock impeller may not provide optimal performance. In such cases, a performance-oriented impeller might be preferable.

5. **Wear on Other Components** If the water pump housing or seals are degraded beyond the impeller, replacing just the impeller may not fully resolve leaks or performance issues. A thorough inspection of the entire assembly may be needed.

6. **Limited Longevity** Like all mechanical parts, the impeller will eventually wear out again. While this kit is a direct replacement, it may not offer extended service life compared to high-performance or marine-grade alternatives.

7. **Tooling Requirements** Proper installation may require specific tools (e.g., torque wrench for gasket compression, sealant, and possibly a puller for stubborn impellers). Lacking these tools could complicate the process.

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### **Conclusion**

The **OMC Cobra Water Pump Impeller Kit (46-03638, 984461, 983895)** is a reliable and cost-effective solution for restoring proper water pump function in OMC Cobra engines. It addresses common issues like overheating, leaks, and reduced cooling efficiency while being relatively easy to install. However, potential drawbacks include limited availability, the risk of counterfeit parts, and the need for careful sourcing to ensure quality.

For most **stock or lightly modified OMC Cobra engines**, this kit is the **best choice** due to its direct compatibility and ease of use. If the engine is heavily modified or requires long-term performance, considering a high-quality aftermarket impeller (e.g., from brands like **Seafoam, Mercruiser, or Marine Impellers**) may be beneficial. Always prioritize purchasing from **authorized dealers or trusted suppliers** to avoid counterfeit parts.

- **Buy from an authorized OMC dealer or a reputable marine parts supplier** (e.g., **MarineMax, West Marine, or a local marine shop**) to ensure authenticity.

- **Inspect the water pump housing and seals** before installation replace them if damaged to prevent future leaks.

- **Follow OMC s service manual** for proper installation torque and sealant application.

- **Consider a performance impeller** if the engine is modified or used in demanding conditions (e.g., high-speed cruising, towing, or tropical climates).

- **Budget for labor** if unsure about installation professional help ensures a leak-free and efficient setup.

For the average boat owner maintaining a **stock or standard Cobra engine**, this kit is a **practical and worthwhile investment** to maintain engine health and prevent costly repairs.

Details:

Condition: New. Item: WATER PUMP KIT WITH HOUSING.

part #: 4603638 prices

• $22.99-$44.99

specifications ignitionstartin:

• for models: Cobra
• for makes: Omc
• brand: Emp
• mpn: 46-03638
• part type: Pump Impeller Housing

shipping ignitionstartin:

• service: Economy
• transit: 4-10 Days
• cost: $0.00
• type: Fixed
• class: Economy

returns ignitionstartin:

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

seller ignitionstartin:

• city: Wheeling, IL
• # reviews: 113176
• rating: 99.0%

general ignitionstartin:

• Boat Parts > Inboard Engines Components > Ignition Starting Systems
• condition: New

offer ignitionstartin:

• sold: 0
• options: Ship-to-home
• started: June 7, 2026
• quantity: 2
• availability: In Stock

payments ignitionstartin:

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

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