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Cooling Spare Parts

5-87311242-2 Water Pump Kit for Isuzu 4HK1 Hitachi EX210K-5A

Name: 5-87311242-2 Water Pump Kit for Isuzu 4HK1 Hitachi EX210K-5A
Brand: EexcavaStart
SKU: 5-87311242-2

OEM / reference5-87311242-2

Specification4HK1 Engine Water Pump Kit

Catalog ID81833080

Engine coolant water-pump kit identified by Isuzu service number 5-87311242-2 (compact form 5873112422). Exact package evidence identifies it as a water-pump kit, and cross-reference catalogs support the Isuzu 4HK1 engine family and Hitachi EX210K-5A applications. The commonly listed 5-87311242-0 / 5873112420 belongs to the same service family but should be confirmed by revision and serial number before substitution.

Fitment status: Verified · Checked 2026-07-28

Product Type: Engine Coolant Water Pump Kit
Product Brand: EexcavaStart
Compatible Engine Family: Isuzu 4HK1
Pump Housing: Cast-metal housing
Impeller: Multi-vane metal impeller
Kit Component: Matching pump-to-block gasket
Installation Area: Engine cooling system

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Part-number relationships

Relationship	Reference family	Number
Primary Service Part Number	Exact package and product-folder number	5-87311242-2
Normalized Search Alias	Formatting-only alias; not a separate interchange	5873112422
Service Family Reference - Verify Revision	Cataloged 4HK1 water-pump service family	5-87311242-0
Service Family Reference - Verify Revision	Compact form of the cataloged service-family number	5873112420
Associated Gasket Number	Pump-to-cylinder-block gasket; not an interchange	8-98114800-1

Evidence record

Source: Exact-reference evidence retained for internal audit
Evidence grade: multi-source-supported
Checked: 2026-07-28

Source URLs, catalog files and local evidence paths are stored in the protected product audit record and are not public outbound links.

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

5-87311242-2

Formatting alias

5873112422

Other documented relationship

5-87311242-0
5873112420
8-98114800-1

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

4HK1 Engine Water Pump Kit

Category: Cooling Spare Parts
Catalog ID: 81833080
Photo views: 8

Before ordering

Confirm these details

Match the complete part number on the original component.
Compare connectors, mounting points and visible dimensions with the product photos.
Confirm the exact machine or engine model and serial range before ordering.

Machine fitment

Compatible model references

4 model references

Engine: Isuzu 4HK1
Excavator: Hitachi EX210K-5A
Recorded machine family: Hitachi ZX200-5A / ZX210-5A / ZX240-5A
Fitment limitation: Confirm 5-87311242-2, engine arrangement, impeller depth, mounting pattern, pulley interface and serial range

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 5-87311242-2

Which machines use 5-87311242-2?

Recorded compatible model references include Engine: Isuzu 4HK1, Excavator: Hitachi EX210K-5A, Recorded machine family: Hitachi ZX200-5A / ZX210-5A / ZX240-5A, Fitment limitation: Confirm 5-87311242-2, engine arrangement, impeller depth, mounting pattern, pulley interface and serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 5-87311242-2?

Formatting aliases for the same number: 5873112422.

How do I confirm 5-87311242-2 before ordering?

Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.

Continue comparing recovered references from the same system.

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