Quicksilver Water Pump Repair Kit for Mercury/Mariner Outboards & MerCruiser Stern Drives — 96148Q8, Impeller, Housing & Seals

The Quicksilver 96148Q8 water pump repair kit replaces the impeller, housing and seals for specified Mercury/Mariner outboards and MerCruiser stern drives to restore cooling flow and protect your engine.

This comprehensive repair kit contains the components needed to rebuild the water pump on a range of Mercury and Mariner carbureted 2-stroke engines and compatible MerCruiser I, R, MR and Alpha One drives (see serial ranges). Quicksilver engineered these parts to meet OEM fit and durability expectations so you can return cooling performance without guessing which aftermarket pieces will work. Always confirm your serial number and follow your service manual for installation and maintenance intervals.

Which engines and drives does this kit fit?

The 96148Q8 kit covers multiple Mercury and Mariner 2-stroke carbureted 4- and 6-cylinder outboards as well as certain MerCruiser I/R/MR and Alpha One stern drives within specified serial number ranges. It does not fit Alpha One Gen II (1991 and newer) or Bravo sterndrives, so checking serial numbers is essential.

• Fits 65–150hp 4- & 6-cylinder models in S/N 1503959–4865677 and 75–115hp S/N 4831999–0A996141
• Fits 135–225hp V6 EFI/DFI models S/N 4868998–0G386495
• Fits MerCruiser I, R, MR, Alpha One drives S/N 2495186–0D469858
• Not compatible with Alpha One Gen II (1991+) or Bravo sterndrives

What parts are included and why they matter?

This kit supplies the principal wear items for a full water pump rebuild so you don’t need to source individual parts. Replacing the impeller and seals together helps restore proper water flow and prevent leakage that can overheat or damage components.

• Pump housing assembly and impeller for restored displacement and flow
• Gaskets, O-rings and water tube guide sleeve to ensure leak-free sealing
• Face plates and key to maintain correct impeller timing
• Gear lube fill and vent screw O-rings for a complete service solution

How does this kit improve engine cooling and reliability?

Worn impellers and degraded seals reduce coolant delivery; swapping them with OEM-spec Quicksilver parts returns designed flow rates and pressure. That helps the engine run at correct temperatures and reduces risk of heat-related wear or component failure when used as part of scheduled maintenance.

• Replaces worn pump components to restore rated cooling capacity
• High-quality materials resist fast deterioration in marine environments
• Proper sealing prevents water intrusion and preserves gearcase lubrication
• OEM fit reduces installation time and alignment issues

When should I replace the water pump components?

Inspect and replace the impeller and seals according to your owner’s recommended intervals or at the first sign of reduced water flow, overheating, or visible impeller wear. Many owners replace the kit annually or every 100 operating hours, but your service manual gives the precise schedule for your model.

• Follow the owner’s manual replacement schedule for your model
• Replace if you detect lower water discharge or overheating
• Perform a visual impeller check during winterization or spring commissioning
• Use during routine lower unit service to avoid repeated disassembly

Who is this for: Boaters and technicians who own compatible Mercury/Mariner outboards or MerCruiser I/R/MR/Alpha One stern drives and need a reliable, OEM-grade water pump rebuild kit. This product is aimed at those who prefer Quicksilver-original components to maintain factory fit, cooling performance and long-term durability. Confirm your serial number, follow the service manual for installation, and use this kit as part of scheduled maintenance to keep your engine running cooler and more reliably.