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#JPR-YM08IH2 JMP Marine Yanmar Replacement Engine Cooling Raw Water / Seawater Pump
SKU: JPR-YM08IH2.

Includes:
JPR-YM08IH2 (Yanmar Replacement Pump) QTY:1.
Steel Pulley & Mounting Bracket.

PLEASE NOTE:
JPR-YM08IH2 is ONLY for 2GM or 3GM as per the cross-reference part numbers in product information below. This should NOT be confused with 2GMF or 3GMF models. If you have the 2GMF or 3GMF please refer to JPR-YM08IH and its cross-reference information. If still unsure please contact us with your question.

You must use JPR-YM08IH2 pump model to replace Yanmar 128377-42500 as there is a difference in revolutions per minute vs the JPR-YM08IH (Flow rate of JPR-YM08IH is greater vs JPR-YM08IH2) which some have thought is good for both this Yanmar number and 128397-42500 . . . this is not true. Use JPR-YM08IH2 to replace Yanmar 128377-42500.

What is the internal difference between JPR-YM08IH2 and model JPR-YM08IH?
The difference is the thickness of the machined “Cam” which is incorporated or part of the Body / Casing itself. The machined cam thickness is less (2mm) for JPR-YM08IH2 vs a larger thickness (4mm) found in the JPR-YM08IH. This is why it is very important to order the correct pump for your model of engine by referring the the cross-reference information provided.

Product Information & Specs:
Uses JMP Impeller p/n: 7050-01K.
Port Size (Inside Diameter): 1/2″ Hose.
Port Size (Outside Diameter): Approx 3/4″ Hose.
Pump Size (LxWxH): 91mm x 114mm x 76mm.
Pump Weight (approx): 4.0 lbs (1.82 kgs).
Replaces Genuine Yanmar Pump p/n: 128377-42500.
Replaces Johnson Pump p/n: 10-24509-02, F4B-902.

Engine Model(s):

2GM, 3GM
Parts Internally Compatible to Genuine: NO.
Internal changes made to pump: Mechanical Seal, Ball Bearing, Shaft, Machined Steel Pulley (Washer & Nut Included) for better quality and performance.
Major Service Kit (All Internal Parts): JSK0082 (*Sold Separately).
Minor Service Kit: JSM0091 (*Sold Separately).

Product Features:

Plug & Play Replacement.
Simple & Compact Design (Less Parts).
Strong Bronze Body (Heavy Duty Marine Grade Casting).
High Performance and Long Life Flexible Impellers.
Marine Grade Shaft (3X Series Non-Magnetic).
Mechanical Seal instead of Lip Seal.
Heavy Duty Machined Steel Pulley.
Cam-Less Design / Cam is machined in the Body Casing.