{"id":3328,"date":"2026-11-12T09:42:34","date_gmt":"2026-11-12T09:42:34","guid":{"rendered":"https:\/\/ruipospareparts.com\/cat-371-1438-36-tooth-steel-water-pump-gear\/"},"modified":"2026-11-13T09:23:49","modified_gmt":"2026-11-13T09:23:49","slug":"cat-371-1438-36-tooth-steel-water-pump-gear","status":"publish","type":"product","link":"https:\/\/ruipospareparts.com\/vi\/cat-371-1438-36-tooth-steel-water-pump-gear\/","title":{"rendered":"CAT 371-1438 36-Tooth Steel Water Pump Gear"},"content":{"rendered":"<div class=\"ruipo-product-description\" style=\"display:block!important;box-sizing:border-box!important;float:none!important;clear:both!important;position:relative!important;max-width:820px!important;width:calc(100% - 32px)!important;margin:0 auto!important;padding:0!important;text-align:left!important;overflow:visible!important;\">\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">CAT 371-1438 36-Tooth Steel Water Pump Gear<\/h2>\n<p><strong>CAT 371-1438 36-Tooth Steel Water Pump Gear<\/strong> \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo m\u00e3 ph\u1ee5 t\u00f9ng c\u1ee7a Caterpillar <strong>371-1438<\/strong>. Transfers rotational motion into the engine water-pump drive. Caterpillar specifies 36 external teeth and low-alloy steel; correct engagement and gear geometry are critical for reliable impeller motion and coolant circulation. This listing is intended for engineers, fleet maintenance teams and international B2B parts buyers who need a clear product specification and a defensible method of checking the application before ordering.<\/p>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Product Overview and Function<\/h2>\n<p>Transfers rotational motion into the engine water-pump drive. Caterpillar specifies 36 external teeth and low-alloy steel; correct engagement and gear geometry are critical for reliable impeller motion and coolant circulation.<\/p>\n<p>Even inexpensive service parts can determine whether a larger repair succeeds. Dimensions, mating geometry, material and installation sequence should be checked against the exact manufacturer drawing rather than assuming that another component with a similar appearance is interchangeable.<\/p>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Key Product Features<\/h2>\n<ul>\n<li>36 external teeth on the pump drive gear<\/li>\n<li>CAT-published low-alloy steel material<\/li>\n<li>Mechanical torque transfer to the water-pump drive<\/li>\n<li>Applied to selected C18 and marine\/power-generation engines<\/li>\n<\/ul>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h2>\n<table class=\"ruipo-tech-table\" style=\"display:table!important;float:none!important;clear:both!important;position:static!important;width:100%!important;max-width:100%!important;min-width:0!important;margin:12px 0 22px 0!important;box-sizing:border-box!important;border-collapse:collapse!important;border-spacing:0!important;table-layout:fixed!important;text-align:left!important;font-size:14px;overflow-wrap:anywhere!important;\">\n<thead>\n<tr>\n<th style=\"text-align:left;border-bottom:1px solid #cbd5e1;background:#f0f3f8;padding:10px 12px;\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\n<th style=\"text-align:left;border-bottom:1px solid #cbd5e1;background:#f0f3f8;padding:10px 12px;\">Chi ti\u1ebft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Brand \/ part identification<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Caterpillar \/ 371-1438<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Part number without hyphen<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">3711438<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Product type<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Water pump drive gear<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">M\u00e3 s\u1ea3n ph\u1ea9m<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">371-1438<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Product type<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Water Pump Gear<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Teeth<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">36 external teeth<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Ch\u1ea5t li\u1ec7u<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Low-alloy steel<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Primary function<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Transmit rotation to water-pump drive<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>Technical data above is limited to publicly verifiable CAT product information. Unlisted dimensions, pressure ratings, torque values and electrical characteristics are not assumed. Please verify the current official drawing and applicable serial number before installation.<\/em><\/p>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Compatible CAT Models and Applications<\/h2>\n<table class=\"ruipo-tech-table\" style=\"display:table!important;float:none!important;clear:both!important;position:static!important;width:100%!important;max-width:100%!important;min-width:0!important;margin:12px 0 22px 0!important;box-sizing:border-box!important;border-collapse:collapse!important;border-spacing:0!important;table-layout:fixed!important;text-align:left!important;font-size:14px;overflow-wrap:anywhere!important;\">\n<thead>\n<tr>\n<th style=\"text-align:left;border-bottom:1px solid #cbd5e1;background:#f0f3f8;padding:10px 12px;\">Equipment Type<\/th>\n<th style=\"text-align:left;border-bottom:1px solid #cbd5e1;background:#f0f3f8;padding:10px 12px;\">CAT Models \/ Applications<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Generator Sets<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">C18<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Marine Engines<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">C15, C18, 3406E<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Petroleum Engines<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">C-15<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">Generators<\/td>\n<td style=\"text-align:left;border-bottom:1px solid #d9e2eb;padding:9px 12px;vertical-align:top;\">SR4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Fitment guidance:<\/strong> Model numbers are representative applications from the Caterpillar public product listing, not a guarantee for every production year or serial number. Engine and machine configurations vary, so final compatibility must be checked in CAT SIS or with the relevant parts diagram before shipment.<\/p>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Common Problems and Inspection Points<\/h2>\n<ul>\n<li>A failed gear drive can compromise coolant circulation and cause temperature-related alarms.<\/li>\n<li>Unusual tooth noise or metal particles should lead to inspection of the drive train, shaft bearings and gear mesh\u2014not just replacement of the visible gear.<\/li>\n<\/ul>\n<p>Do not replace a component based on one symptom alone. Inspection should include the adjacent parts, installation condition and available equipment diagnostics so that a new part is not installed into an unresolved system fault.<\/p>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Installation and Maintenance Notes<\/h2>\n<ul>\n<li>Compare tooth count, bore, keying and mating gear arrangement before fitting.<\/li>\n<li>Use the correct shaft assembly instructions and verify backlash\/alignment if required by the CAT service manual.<\/li>\n<\/ul>\n<p>The original failure should be understood before new parts are installed. Clean sealing surfaces, correct fasteners, controlled tightening and inspection of adjacent parts are often as important as the replacement component itself. Use the applicable Caterpillar service manual for torque figures, clearance settings, calibration instructions and safe test procedures; those values can differ between engine arrangements.<\/p>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng<\/h2>\n<ul>\n<li>Confirm that the application calls for a 36-tooth gear rather than a different water-pump drive revision.<\/li>\n<li>Supply engine serial number, old gear photos and relevant pump part number.<\/li>\n<li>Please send the requested quantity, shipping destination, engine or machine serial number, and photographs of the old part or packaging if available.<\/li>\n<\/ul>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">C\u00e1c b\u1ed9 ph\u1eadn CAT li\u00ean quan<\/h2>\n<p>For other components used in related engine or maintenance systems, review these RUIPO product listings. They are cross-references for sourcing and are <strong>not a claim of direct interchangeability<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/ruipospareparts.com\/vi\/cat-354-1672-engine-water-pump-for-c4-4-3054c\/\">B\u01a1m n\u01b0\u1edbc \u0111\u1ed9ng c\u01a1 CAT 354-1672<\/a><\/li>\n<li><a href=\"https:\/\/ruipospareparts.com\/vi\/cat-210-6896-sea-water-heat-exchanger-for-c4-4\/\">CAT 210-6896 B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t n\u01b0\u1edbc bi\u1ec3n<\/a><\/li>\n<\/ul>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Why Choose RUIPO Spare Parts<\/h2>\n<ul>\n<li>CAT part-number-based sourcing for professional maintenance and procurement teams.<\/li>\n<li>Assistance checking fitment against your engine or machine model and serial number.<\/li>\n<li>International B2B quotations, packing confirmation and export-shipping coordination.<\/li>\n<li>Clear communication on stock status and documentation before an order is confirmed.<\/li>\n<\/ul>\n<h2 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">What is the CAT 371-1438 part used for?<\/h3>\n<p>Transfers rotational motion into the engine water-pump drive. Caterpillar specifies 36 external teeth and low-alloy steel; correct engagement and gear geometry are critical for reliable impeller motion and coolant circulation.<\/p>\n<h3 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Which Caterpillar models are compatible with 371-1438?<\/h3>\n<p>Public Caterpillar parts data lists selected examples including Generator Sets: C18; Marine Engines: C15, C18, 3406E; Petroleum Engines: C-15. This is an application guide only; confirm compatibility by serial number and engine arrangement.<\/p>\n<h3 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">What should be checked before purchasing?<\/h3>\n<p>Please confirm the original CAT part number, equipment\/engine model, serial number, correct mounting arrangement and quantity. For repair jobs, ask whether related seals or hardware are required.<\/p>\n<h3 style=\"text-align:left!important;margin-left:0!important;margin-right:0!important;padding-left:0!important;clear:both!important;\">Can RUIPO help with international supply and part identification?<\/h3>\n<p>RUIPO Spare Parts can review the part number and your equipment information, check current stock and available packaging, and prepare a quotation with shipping details. Product availability is not guaranteed until confirmed.<\/p>\n<p><strong>Request a quote:<\/strong> Contact RUIPO Spare Parts with the CAT part number, required quantity, destination country and serial-number information. We can check the details before an export quotation is issued.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p><strong>CAT 371-1438 36-Tooth Steel Water Pump Gear<\/strong>. Water pump drive gear for selected Caterpillar applications. Public CAT specifications and compatible-model examples are listed below; confirm fitment by serial number. Contact RUIPO for stock status and international quotation.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"_gspb_post_css":""},"product_brand":[],"product_cat":[1417],"product_tag":[1476,1477,1479,1478],"class_list":["post-3328","product","type-product","status-publish","product_cat-caterpillar-service-repair-parts-caterpillar-engine-parts-2","product_tag-371-1438","product_tag-1477","product_tag-cat-371-1438","product_tag-water-pump-drive-gear","first","outofstock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/product\/3328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/media?parent=3328"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/product_brand?post=3328"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/product_cat?post=3328"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/ruipospareparts.com\/vi\/wp-json\/wp\/v2\/product_tag?post=3328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}