Let’s Dive into Sierra International 183217 Impeller Kit
The Sierra International 183217 Impeller Kit is a crucial maintenance component for Mercruiser #1 drive units, specifically those with serial numbers up to D494569. Made by Sierra International, a trusted name in marine parts, this kit offers a comprehensive set of replacement parts to keep your boat’s cooling system running efficiently. This is a must-have for any boat owner looking to avoid overheating issues and extend the life of their engine.
My old impeller was showing signs of wear after a long season of use in saltwater. I was experiencing slight overheating at higher RPMs, and I knew neglecting it would only lead to bigger problems down the line. I needed a reliable and complete kit to rebuild the water pump without replacing the entire assembly.
Upon opening the kit, I was impressed by the sheer number of components included. Everything was neatly organized and appeared to be of high quality. The materials felt durable, and the gaskets and O-rings seemed well-made, promising a tight seal.
I considered complete water pump kits from Sierra (like the 18-3314), but since the housing and base were still in good condition, this impeller kit offered a more economical solution. I picked the Sierra International 183217 Impeller Kit because it focused specifically on the wear components and was known to be a direct replacement for my Mercruiser. It also provided all the necessary gaskets and seals that are often overlooked when only replacing the impeller itself.
My initial reaction was positive. The kit seemed complete and well-organized, giving me confidence that I could tackle the job myself and restore my boat’s cooling system to optimal performance. It was exciting knowing I could avoid a costly mechanic bill with this kit.
Real-World Testing: Putting Sierra International 183217 Impeller Kit to the Test
First Use Experience
I installed the Sierra International 183217 Impeller Kit in my boat’s water pump on a sunny afternoon in my driveway before putting the boat back in the water at the lake. Installation took around two hours, as I meticulously cleaned and inspected each part before assembly. The included diagram, combined with my shop manual, made the process straightforward.
The first test came during a weekend fishing trip on the lake. The engine temperature remained stable, even under heavy load while pulling a skier. There were no signs of overheating, and the water pump seemed to be functioning flawlessly, providing the necessary cooling flow.
Installation was very straightforward for an experienced technician; I would rate it as difficult for an amateur mechanic. A few of the O-rings are tight and difficult to place but it is better they are tight than loose.
Extended Use & Reliability
After several months of use, the Sierra International 183217 Impeller Kit continues to perform admirably. I have used my boat almost every weekend, and the cooling system remains consistent. I have had no issues with overheating or the engine running hot.
There are no visible signs of wear or degradation on the impeller or gaskets. The cooling system operates within the normal temperature range and sounds normal. The materials are holding up well to the rigors of saltwater use.
Maintenance involves flushing the cooling system with fresh water after each use and inspecting the impeller annually. Compared to the previous impeller, which showed significant wear after only one season, this kit appears to be significantly more durable. It far outperforms the cheap aftermarket impeller I tried a few years back.
Breaking Down the Features of Sierra International 183217 Impeller Kit
Specifications
- The Sierra International 183217 Impeller Kit is designed for Mercruiser #1 drive units (through s/n D494569). This ensures compatibility with specific engine models, avoiding fitment issues.
- It includes the following components: (1) Sierra 18-2801 Water Pump Gasket, (1) Sierra 18-2826 Water Pump Base Gasket, (1) Sierra 18-2914 Water Pump Gasket, (1) Sierra 18-2915 Water Pump Gasket, (1) Sierra 18-2919 Water Pump Gasket, (1) Sierra 18-2944 Seal Ring, (2) Sierra 18-2945 Drain Screw Gaskets, (1) Sierra 18-3017 Impeller, (1) Sierra 18-3109 Water Tube Guide, (1) Sierra 18-3110 Water Pump Housing Bushing, (1) Sierra 18-3117 Impeller Plate, (1) Sierra 18-7158 O-Ring, (1) Sierra 18-7162 O-Ring, (1) Sierra 18-7173 O-Ring, (1) Sierra 18-7176 O-Ring, (1) Sierra 18-7426 O-Ring, and (1) O-Ring. The inclusion of all necessary gaskets and seals prevents leaks and ensures a complete rebuild.
- It is interchangeable with GLM 12290; Mallory 9-48304; Mercruiser Stern Drive 46-96148A8; and Mercury Marine 46-32437A1, 46-32437A3, 46-37433A1, 46-42579A4, 46-44292A4, and 46-44579A4. This interchangeability makes it easy to find compatible parts and verifies that it is an official part.
- Each Sierra International product meets or exceeds the original equipment part it replaces. This assures the product will perform at or above the factory specification.
Performance & Functionality
The Sierra International 183217 Impeller Kit effectively restores the cooling system’s performance. It consistently maintains optimal engine temperature, even under strenuous conditions.
The kit excels in providing a complete solution, ensuring all critical components are replaced simultaneously. The impeller’s robust design and the quality of the gaskets and seals contribute to reliable and efficient operation. One area that could be improved is the clarity of the included instructions, particularly for novice users.
The kit exceeded my expectations, providing a cost-effective and reliable solution for rebuilding the water pump. The peace of mind knowing my engine is properly cooled is invaluable.
Design & Ergonomics
The kit is well-designed, with each component fitting precisely as intended. The impeller is made from a durable rubber compound that resists wear and tear.
The components are easy to handle and install, thanks to their precise dimensions and clear labeling. No special tools are required beyond standard mechanic’s tools.
Durability & Maintenance
The Sierra International 183217 Impeller Kit appears to be built to last, using high-quality materials that withstand the harsh marine environment. Regular flushing and annual inspection of the impeller will help ensure long-term reliability.
The kit is relatively easy to maintain; the primary maintenance involves flushing the cooling system after each use. Replacement of the impeller should be considered every one to two years, depending on usage.
Accessories and Customization Options
The kit includes all necessary components for a standard water pump rebuild. There are no additional accessories included.
There are no specific customization options available for this kit. It is designed as a direct replacement for the original parts.
Pros and Cons of Sierra International 183217 Impeller Kit
Pros
- Comprehensive Kit: Includes all necessary gaskets and seals for a complete rebuild.
- High-Quality Materials: Impeller and gaskets are made from durable materials that resist wear and tear.
- Direct Replacement: Designed as a direct replacement for Mercruiser #1 drive units, ensuring a perfect fit.
- Cost-Effective: More affordable than replacing the entire water pump assembly.
- Reliable Performance: Restores the cooling system’s performance and maintains optimal engine temperature.
Cons
- Some of the O-rings are difficult to install.
- Instructions could be clearer for novice mechanics.
Who Should Buy Sierra International 183217 Impeller Kit?
This kit is perfect for boat owners with Mercruiser #1 drive units (through s/n D494569) who are experiencing cooling system issues or performing routine maintenance. It is also ideal for experienced mechanics who prefer to rebuild their water pumps rather than replace the entire assembly.
Novice mechanics may find the installation challenging and should consider seeking assistance from a qualified professional. Those with severely damaged water pump housings should opt for a complete water pump kit instead.
A good set of mechanic’s tools and a reliable shop manual are must-have accessories for installing this kit. Having some marine grease is also recommended.
Conclusion on Sierra International 183217 Impeller Kit
The Sierra International 183217 Impeller Kit is a reliable and cost-effective solution for maintaining your boat’s cooling system. The high-quality materials and comprehensive component list ensure a complete and durable rebuild.
The price is justified by the quality and completeness of the kit, as well as the peace of mind it provides knowing your engine is properly cooled. The parts are dependable, and I have total confidence in the performance of the product.
I highly recommend the Sierra International 183217 Impeller Kit to any boat owner looking to keep their Mercruiser #1 drive unit running smoothly. Invest in this kit and keep your boat on the water, not in the shop!