12258 Water Pump Service Kit (12258) - GLM Marine

Product	Price	Rating	Comment
Yamaha Motors 6P2-W0078-00-00 Water Pump Repair Kit Genuine OEM product	$107.95~~$134.95~~ In stock 5+ in stock	Best	Genuine Yamaha kit with OEM-spec fitment and a complete set of correctly matched components (metal-hub impeller, stainless insert cup and wear plate, composite gasket, and proper dowels/key). The flanged bolts with captive washers and individual Yamaha bagging indicate higher attention to corrosion control and assembly consistency. Insert cup is a Yamaha-supplied subcomponent marked Malaysia, but the overall kit quality and specification match OEM requirements.
Genuine Yamaha kit with OEM-spec fitment and a complete set of correctly matched components (metal-hub impeller, stainless insert cup and wear plate, composite gasket, and proper dowels/key). The flanged bolts with captive washers and individual Yamaha bagging indicate higher attention to corrosion control and assembly consistency. Insert cup is a Yamaha-supplied subcomponent marked Malaysia, but the overall kit quality and specification match OEM requirements.
GLM Marine 12258 Water Pump Service Kit (12258) (viewing this product) Aftermarket product	$94.15~~$117.69~~ In stock Only 2 remaining	Good	Functional replacement kit with the expected stainless cup/plate and a keyed impeller, but it uses a simpler blue fiber gasket and generic bolt/washer hardware rather than OEM-style flanged captive-washer bolts. Taiwan-origin rubber impellers are often less durable than OEM-grade compounds, which can matter in a critical cooling component. Best suited when you want a serviceable kit but are accepting some materials/spec differences versus Yamaha.
Functional replacement kit with the expected stainless cup/plate and a keyed impeller, but it uses a simpler blue fiber gasket and generic bolt/washer hardware rather than OEM-style flanged captive-washer bolts. Taiwan-origin rubber impellers are often less durable than OEM-grade compounds, which can matter in a critical cooling component. Best suited when you want a serviceable kit but are accepting some materials/spec differences versus Yamaha.

PartX Recommends

For a water pump rebuild (labor-intensive with high consequences if cooling fails), the Yamaha OEM kit is the safest overall choice: OEM-verified fit, higher-spec sealing approach, and hardware designed for consistent clamp load and corrosion resistance. The complete, well-packaged component set minimizes installation risk and uncertainty compared with the aftermarket alternatives.

$113.95

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PartX Alternatives — This part: Good

Ratings provided by PartX™

Product	Price	Rating	Comment
Yamaha Motors 6P2-W0078-00-00 Water Pump Repair Kit Genuine OEM product	$113.95~~$133.70~~ In stock 5+ in stock	Best	Genuine Yamaha kit with OEM-spec fitment and a complete set of correctly matched components (metal-hub impeller, stainless insert cup and wear plate, composite gasket, and proper dowels/key). The flanged bolts with captive washers and individual Yamaha bagging indicate higher attention to corrosion control and assembly consistency. Insert cup is a Yamaha-supplied subcomponent marked Malaysia, but the overall kit quality and specification match OEM requirements.
Genuine Yamaha kit with OEM-spec fitment and a complete set of correctly matched components (metal-hub impeller, stainless insert cup and wear plate, composite gasket, and proper dowels/key). The flanged bolts with captive washers and individual Yamaha bagging indicate higher attention to corrosion control and assembly consistency. Insert cup is a Yamaha-supplied subcomponent marked Malaysia, but the overall kit quality and specification match OEM requirements.
GLM Marine 12258 Water Pump Service Kit (12258) (viewing this product) Aftermarket product	$94.15~~$117.69~~ In stock Only 2 remaining	Good	Functional replacement kit with the expected stainless cup/plate and a keyed impeller, but it uses a simpler blue fiber gasket and generic bolt/washer hardware rather than OEM-style flanged captive-washer bolts. Taiwan-origin rubber impellers are often less durable than OEM-grade compounds, which can matter in a critical cooling component. Best suited when you want a serviceable kit but are accepting some materials/spec differences versus Yamaha.
Functional replacement kit with the expected stainless cup/plate and a keyed impeller, but it uses a simpler blue fiber gasket and generic bolt/washer hardware rather than OEM-style flanged captive-washer bolts. Taiwan-origin rubber impellers are often less durable than OEM-grade compounds, which can matter in a critical cooling component. Best suited when you want a serviceable kit but are accepting some materials/spec differences versus Yamaha.

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Supersession Chain

Name	SKU	Superseding SKU
Water Pump Service Kit (12258)Viewing this product	12258	Current

OEM Interchange

Name	SKU	Price	Brand
Water Pump Repair Kit	6P2-W0078-00-00	$113.95	Yamaha Motors

Water Pump Service Kit (12258) 12258

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