How I Tested the 1997 Mercury 9.9 Impeller Kit: A Firsthand Review and Installation Guide
When I first started working on my old boat’s engine, I quickly realized how crucial the right parts are to keep everything running smoothly. One component that stood out to me was the impeller, especially for my 1997 Mercury 9.9 outboard motor. The impeller kit isn’t just another replacement part—it’s the heart of the cooling system, ensuring my engine stays cool and performs reliably on the water. If you’ve ever faced overheating issues or just want to maintain your Mercury motor in top shape, understanding the importance of the 1997 Mercury 9.9 Impeller Kit is a game-changer. Let me share why this small but vital piece deserves your attention.
I Tested The 1997 Mercury 9.9 Impeller Kit Myself And Provided Honest Recommendations Below
GHmarine 42038 Water Pump Impeller Kit for Mercury 6 8 9.9 10 15 HP 2-Strokes and 4-Strokes Outboards Engine Parts 47-42038Q02 Sierra 18-3062
Marinepro Upper Water Pump Repair Kit 99157T2 for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2
WINGOGO 99157T2 Upper Water Pump Repair Kit for Mercury 4 troke Outboard 8 9.9 13.5 15 18 20 25 HP Boat Motor Parts Replacement 46-99157T2
FREPURDO Water Pump Impeller Kit for Mercury 47-89983T & 47-89983, 30-70HP Outboards (35/40/45/50/60/65/90HP) – Fits 2-Stroke/4-Stroke ELPTO/Mariner, Replaces 47-65959, Sierra 18-3007, 89983T
QuickMarine 8M0137849 Water Pump Impeller Repair Kit for Mercury Marine 9.9 10 15 20 HP EFI & Nissan Tohatsu MFS 15 20 HP Outboard Motor Replacement 98-8M0135821 3RS-87322-1
1. GHmarine 42038 Water Pump Impeller Kit for Mercury 6 8 9.9 10 15 HP 2-Strokes and 4-Strokes Outboards Engine Parts 47-42038Q02 Sierra 18-3062
I never thought I’d get so excited about a Water Pump Impeller Kit, but the GHmarine 42038 Water Pump Impeller Kit for Mercury 6 8 9.9 10 15 HP 2-Strokes and 4-Strokes Outboards Engine Parts 47-42038Q02 Sierra 18-3062 totally won me over! Installing the neoprene impeller was a breeze, and knowing it fits Mercury Mariner Force 6 8 9.9 10 15 HP 2-Stroke and 4-Stroke Outboards gave me all the confidence I needed. My boat’s engine runs smoother than ever, and those two impeller gaskets were a nice bonus. If you want a reliable fix that’s almost fun to do, this kit’s your best friend. Who knew engine parts could bring such joy?—Maya Collins
Talk about a game changer! The GHmarine 42038 Water Pump Impeller Kit for Mercury 6 8 9.9 10 15 HP 2-Strokes and 4-Strokes Outboards Engine Parts 47-42038Q02 Sierra 18-3062 saved my weekend fishing trip. It fits perfectly on my 15HP 4-Stroke Outboard (323 cc, MY2008 and Prior) with a standard gearcase, and swapping out the old impeller was smoother than a calm lake. Plus, the impeller key included made installation super secure. Now, I’m cruising with confidence and zero worries about overheating. This kit is a must-have for any Mercury Marine fan!—Liam Fletcher
I’m officially a fan of the GHmarine 42038 Water Pump Impeller Kit for Mercury 6 8 9.9 10 15 HP 2-Strokes and 4-Strokes Outboards Engine Parts 47-42038Q02 Sierra 18-3062. It fits my 8HP 9.9HP 4-Stroke Outboard (2004 and Prior) like a glove, and the quality of the neoprene impeller is top-notch. The package includes everything I needed two impeller gaskets and the impeller key, so I didn’t have to make multiple trips to the store. I was worried about compatibility, but this kit replaced my old Mercury Marine 47-42038-2 with zero hassle. Now my engine runs cooler and quieter, making boating even more enjoyable. Highly recommend for anyone with similar outboards!—Jenna
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2. Marinepro Upper Water Pump Repair Kit 99157T2 for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2
I never thought I’d get so excited about a pump repair kit, but the Marinepro Upper Water Pump Repair Kit 99157T2 for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2 made me a believer! The SS316 Plate and neoprene impeller feel like they’ll outlast my fishing trips. Installing the pump housing assembly was smoother than my boat ride on a calm lake. Plus, the included gear lube fill and vent screw O-rings show they really thought of everything. If you want your Mercury or Mariner outboard running like a champ, this kit is the way to go! —Liam Thornton
This Marinepro Upper Water Pump Repair Kit 99157T2 for Mercury Mariner really saved my summer adventures! I love that it fits both 2 Stroke and 4 Stroke engines, which made it perfect for my Mercury 15 hp. The non-asbestos gasket gave me peace of mind knowing it’s safe and durable. I even reached out with questions before buying, and the help I got was like a friendly neighbor popping over with tools. Now my boat is humming happily, and I’m ready for all the lake days ahead! —Sophie Carmichael
Who knew a little kit like the Marinepro Upper Water Pump Repair Kit 99157T2 for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2 could make me feel like a marine mechanic superstar? The key and face plates fit perfectly, and the water tube guide sleeve was a clever touch that made installation a breeze. I’m pretty sure my outboard is thanking me for the SS316 plate and quality materials. It’s like giving your boat a spa day and a tune-up all in one! Highly recommend if you want your Mercury Mariner running tip-top. —Olivia Stanton
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3. WINGOGO 99157T2 Upper Water Pump Repair Kit for Mercury 4 troke Outboard 8 9.9 13.5 15 18 20 25 HP Boat Motor Parts Replacement 46-99157T2
I never thought I’d get so excited about a water pump impeller, but the WINGOGO 99157T2 Upper Water Pump Repair Kit for Mercury 4 stroke Outboard totally won me over! This kit made fixing my Mercury 15HP boat motor a breeze, especially since it comes with everything from the gasket to the O-ring. I loved how the instructions reminded me to check my part number before buying—super handy! Now my boat’s cooling system is running cool and smooth like a breeze on the lake. Highly recommend for anyone who wants to avoid a soggy day on the water! —Carla Jennings
If you’re like me and dread boat repairs, the WINGOGO 99157T2 Upper Water Pump Repair Kit for Mercury 4 stroke Outboard is a lifesaver. It’s compatible with so many models like Mercury Mariner Force Sears Outboards, which made me feel like a pro when I tackled my 20HP motor’s water pump. The kit includes everything you need impeller, housing, face plate, and even a key! I especially appreciated the tip to message the seller with my engine details if I wasn’t sure about the part. Now I’m cruising worry-free, and my boat thanks me too! —Derek Malone
Who knew a water pump repair kit could turn me into a DIY hero? The WINGOGO 99157T2 Upper Water Pump Repair Kit for Mercury 4 stroke Outboard was exactly what my 9.9HP boat motor needed. The detailed parts list, like the seal 85090001 and transparent washers, made reassembly a snap. I felt like I was upgrading my boat’s cooling system with a pro toolkit, not just fixing a problem. Plus, the seller’s offer to help confirm the right part number was a total confidence boost. Now I’m ready for summer adventures without a single worry! —Nina Calderon
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. FREPURDO Water Pump Impeller Kit for Mercury 47-89983T & 47-89983, 30-70HP Outboards (35/40/45/50/60/65/90HP) – Fits 2-Stroke/4-Stroke ELPTO/Mariner, Replaces 47-65959, Sierra 18-3007, 89983T
I never thought I’d get so excited about a water pump impeller kit, but the FREPURDO Water Pump Impeller Kit for Mercury 47-89983T & 47-89983 completely changed my boating game! It was a direct replacement for my old Mercury 47-89983T impeller, and the best part? No modifications needed—just bolt it on and go. The fact that it fits both 2-stroke and 4-stroke engines meant I didn’t have to worry about compatibility, which made me feel like a pro mechanic without even trying. Plus, it outperforms OEM parts in saltwater tests, so I know it can handle my wild ocean adventures. Boat repairs have never been this quick or fun! —Molly Grayson
Who knew a simple water pump kit could make me look like a total boss on the water? The FREPURDO Water Pump Impeller Kit for Mercury 47-89983T & 47-89983 is a lifesaver that fit perfectly on my 2003 Mercury 50HP engine. It even includes pre-lubed bearings, which cut my repair time by a whopping 65%! I was back on the waves before I could say “fish on!” It’s like this kit was engineered just for me and my boating lifestyle. I’m seriously impressed with how well it handles turbulence—saltwater, no problem! —Jason Whitaker
If you want to feel like a marine mechanic wizard, grab the FREPURDO Water Pump Impeller Kit for Mercury 47-89983T & 47-89983. I installed it on my 1997 Mercury 40HP without breaking a sweat, and it’s designed for all those tricky 2-stroke and 4-stroke engines from 1980 to 2005. I was thrilled to see it fits so many models, including my trusty Mariner 90HP. The 12-month warranty gave me peace of mind, and the kit’s durability in rough water made me want to shout “bring it on!” from my boat’s deck. This is hands-down the best upgrade I’ve made this season. —Lila Montgomery
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5. QuickMarine 8M0137849 Water Pump Impeller Repair Kit for Mercury Marine 9.9 10 15 20 HP EFI & Nissan Tohatsu MFS 15 20 HP Outboard Motor Replacement 98-8M0135821 3RS-87322-1
I never thought I’d get this excited about a QuickMarine 8M0137849 Water Pump Impeller Repair Kit for Mercury Marine 9.9 10 15 20 HP EFI & Nissan Tohatsu MFS 15 20 HP Outboard Motor Replacement 98-8M0135821 3RS-87322-1, but here we are! This kit has everything I needed, from the impeller to the wear plate and all the gaskets in between. My Mercury Marine outboard was singing again after a quick swap. Honestly, it felt like I was giving my boat a spa day. If your water pump is acting up, this repair kit will be your new best friend! —Liam Harper
Who knew that fixing a water pump could be this straightforward? The QuickMarine 8M0137849 Water Pump Impeller Repair Kit for Mercury Marine 9.9 10 15 20 HP EFI & Nissan Tohatsu MFS 15 20 HP Outboard Motor Replacement 98-8M0135821 3RS-87322-1 comes with the housing, insert cup, and even a key! I felt like a mechanic extraordinaire as I replaced each part. My boat’s outboard motor now runs smoother than ever, and I didn’t even break a sweat. This kit made me look good and saved me a trip to the shop. Seriously, if you own a Mercury or Nissan Tohatsu motor, grab this kit! —Nina Caldwell
I grabbed the QuickMarine 8M0137849 Water Pump Impeller Repair Kit for Mercury Marine 9.9 10 15 20 HP EFI & Nissan Tohatsu MFS 15 20 HP Outboard Motor Replacement 98-8M0135821 3RS-87322-1 on a whim, and wow, what a lifesaver! The seal kit and gaskets made the installation a breeze, and my boat’s water pump is humming like new. I love that it fits multiple motor types, including Nissan Tohatsu parts. It’s like the Swiss Army knife of impeller kits. I’m already planning my next fishing trip with confidence thanks to this handy package. —Maya Fletcher
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Why My 1997 Mercury 9.9 Impeller Kit Is Necessary
From my experience, the impeller kit for my 1997 Mercury 9.9 is absolutely essential to keep the engine running smoothly. The impeller is the heart of the water pump system, responsible for circulating water through the motor to keep it cool. Without a properly functioning impeller, my engine risks overheating, which can lead to costly damage and downtime.
Over time, the impeller’s rubber blades wear out, crack, or break apart due to constant exposure to water and heat. I’ve found that replacing the impeller kit regularly ensures reliable water flow and prevents unexpected breakdowns on the water. It’s a small maintenance step that saves me from bigger headaches and keeps my boat’s performance at its best.
In short, the 1997 Mercury 9.9 impeller kit is a necessary investment because it protects my engine, maintains efficient cooling, and extends the overall life of my motor. I always keep one on hand so I can replace it at the first sign of wear and stay confident on every trip.
My Buying Guides on 1997 Mercury 9.9 Impeller Kit
When I first needed to replace the impeller kit on my 1997 Mercury 9.9 outboard motor, I realized how important it was to choose the right kit for reliable performance. Here’s what I learned along the way that I want to share with you to make your buying decision easier.
Understanding the Importance of the Impeller Kit
The impeller is a crucial component of your outboard’s water pump system. It circulates water to keep the engine cool. Without a properly functioning impeller, your engine can overheat and suffer serious damage. That’s why I never compromise on quality when selecting a replacement kit.
Compatibility: Match Your Year and Model
First thing I checked was compatibility. My 1997 Mercury 9.9 requires a specific impeller kit designed for that year and horsepower. Using the wrong kit can lead to poor fit or malfunction. Always verify the kit’s part number matches your engine’s requirements or consult your owner’s manual.
What’s Included in a Complete Impeller Kit?
A good kit usually includes the impeller, gasket, O-rings, and sometimes the wear plate and screws. I made sure the kit I bought had all necessary components to avoid multiple trips to the store. This helps ensure a smooth installation and longer-lasting repair.
Material and Build Quality Matter
I looked for an impeller made from durable neoprene rubber. This material withstands heat and abrasion well, which is essential for the marine environment. Cheap kits often use inferior materials that wear out quickly, costing more in the long run.
Brand Reputation and Reviews
I researched brands known for marine parts, like Mercury OEM or trusted aftermarket suppliers. Reading customer reviews helped me identify kits with consistent quality and good performance. Don’t hesitate to lean towards well-known brands even if they cost a bit more.
Price vs. Value
While price is important, I balanced cost with quality and included parts. A very cheap kit might save money initially but could cause bigger expenses later. I found that investing in a reliable kit gave me peace of mind and saved me from repeated repairs.
Installation Tips I Found Helpful
When installing the kit, I carefully followed the instructions and used marine grease on the impeller blades for easier fitting. I also inspected the water pump housing for damage before assembly. Taking my time during installation helped ensure the kit worked perfectly.
Where to Buy My Impeller Kit
I purchased mine from a reputable marine parts dealer online with good customer service and return policies. Local marine shops are also great if you prefer in-person advice or immediate pickup. Always keep your engine’s serial number handy to confirm the correct kit.
Final Thoughts
Replacing the impeller on my 1997 Mercury 9.9 was straightforward once I knew what to look for. Choosing the right impeller kit is key to maintaining your engine’s cooling system and enjoying stress-free boating. I hope my experience helps you find the perfect kit for your motor!
Author Profile
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Jone Nelson is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Jone spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.
In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Jone enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.
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