QuickMarine Water Pump Impeller Repair Kit for Mercury 25-30 HP

In this review of the QuickMarine 853792T01 water pump impeller repair kit, the bottom line is clear: this kit is for boat owners who need a practical, affordable rebuild for Mercury Mariner 25 and 30 HP lower units. The reviewer found it restores cooling function and fits the stated models without fuss, making it a sensible spare to carry or a budget-friendly replacement when the original impeller shows wear. Practicality and correct fit are the single biggest reasons to consider this kit.

Key Features

• Model fit: Designed to fit Mercury Mariner 25 and 30 HP lower unit gearcase, so buyers can expect correct compatibility for those engines.
• Complete rebuild pieces: The kit contains an impeller, insert cup, gaskets, wear plate, key and bolts with washers, providing everything needed for a standard pump service.
• Impeller dimensions: The impeller has six blades, a 20.3 mm height and 44.1 mm overall diameter, which supports predictable flow and fit during replacement.
• Aftermarket backup: Marketed as an aftermarket rebuild kit, it offers a cost-effective spare or replacement when OEM parts are not on hand.
• Durability focus: Customers report the parts restored engine cooling and held up in service, indicating reasonable material quality for routine use.

Who It's For

This kit is best for owners of Mercury Mariner 25 and 30 HP outboard motors who perform their own maintenance or keep a spare rebuild kit for trips. It suits do-it-yourselfers who value a complete package with impeller, wear plate and hardware included so a single purchase covers a routine pump rebuild.

It is less appropriate for buyers who require OEM-branded parts for warranty or long-term service contracts, or for engines outside the specified models where fit and shaft dimensions may differ.

Pros & Cons

Pros

• Complete kit includes all small parts and hardware needed for a standard water pump service.
• Customers report the kit restores engine cooling and provides a reliable fit for the targeted models.
• Impeller dimensions and six-blade design match common replacement specifications for these outboards.

Cons

• Aftermarket product may not satisfy buyers who strictly prefer factory OEM parts for warranty or specification reasons.
• Limited to Mercury Mariner 25 and 30 HP lower units, so it is not universal for other engines.

Specifications

Replaces	853792T01, 853792A07, 853792A1, 8M0208905
Fits	Mercury Mariner 25 and 30 HP lower unit gearcase
Impeller blades	6
Impeller height	20.3 mm (0.80 in)
Overall diameter	44.1 mm (1.74 in)
Shaft diameter	17.1 mm (0.67 in)
Package contents	Impeller, insert cup, gaskets, wear plate, key, bolts with washers

Our Verdict

For Mercury Mariner 25 and 30 HP owners who need an effective, budget-minded rebuild kit, this QuickMarine impeller set is a practical choice that delivers the parts and fit needed to restore cooling. It represents good value as a spare or replacement, though buyers seeking factory OEM branding should weigh that preference against the cost savings and reported reliable performance.

Frequently Asked Questions

Will this fit my Mercury Mariner 25 HP outboard?
Yes, the kit is specified for Mercury Mariner 25 and 30 HP lower unit gearcases and is intended to replace the listed part numbers.

Does the kit include all bolts and gaskets needed?
Yes, the package contains the impeller, insert cup, gaskets, wear plate, key and bolts with washers for a standard service.

Is this an OEM part?
No, this is an aftermarket rebuild kit recommended as a backup or replacement and not a factory-branded part.