{"product_id":"elring-engine-o-ring-cummins-replaces-3686525-144-740-840-906525el","title":"Elring Engine O-Ring - Cummins - Replaces 3686525 144.740 840.906525EL","description":"\u003cp\u003eNobody plans a repair around an O-ring, and nobody finishes one without it. This \u003cstrong\u003eElring Engine O-Ring\u003c\/strong\u003e distributed by FleetPro Parts \u0026amp; Tires is an \u003cstrong\u003eElring OE\u003c\/strong\u003e sealing ring for \u003cstrong\u003eCummins\u003c\/strong\u003e engines, listed by Cummins as \u003cstrong\u003e3686525\u003c\/strong\u003e. Sealing rings harden, take a permanent set and lose their squeeze with heat and hours, and when one lets go the story is always the same: a slow seep that never quite dries, a spot on the ground that comes back, and a joint that has to come apart again. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.\u003c\/p\u003e\n\n\u003ch2\u003eSeal It Right the First Time: The Elring OE O-Ring Advantage\u003c\/h2\u003e\n\n\u003cp\u003eThis is an \u003cstrong\u003eElring Original\u003c\/strong\u003e part — an engine sealing gasket manufactured to OE specification rather than a ring pulled out of a generic assortment box. That distinction matters more on an O-ring than on almost anything else in the truck, because a ring that is close on diameter but wrong on section either extrudes under pressure or never seats properly, and either way you find out after everything is buttoned back up. Cummins lists this seal as \u003cstrong\u003e3686525\u003c\/strong\u003e; Elring carries it as \u003cstrong\u003e144.740\u003c\/strong\u003e, also written \u003cstrong\u003e144740\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe fitting rules are the boring ones, and they are the ones that work. Clean the sealing surfaces before the new ring goes near them. Never reuse the old seal, even if it looks perfect — a ring that has been in service has already conformed to the joint and will not do it twice. And torque the fasteners to spec in sequence rather than running them down one at a time. On a part this inexpensive, the only expensive mistake available to you is putting the old one back.\u003c\/p\u003e\n\n\u003cp\u003eAt FleetPro Parts \u0026amp; Tires, we stock the OE-grade seals because the labor around them costs many times the part. This O-ring is a direct replacement for highly searched industry numbers including \u003cstrong\u003eCummins 3686525\u003c\/strong\u003e and \u003cstrong\u003eElring 144.740\u003c\/strong\u003e, and it is covered by the \u003cstrong\u003e1-Year FleetPro Warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eVehicle Fitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis OE-specification Elring sealing ring is intended for the following commercial application:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMake\/Model:\u003c\/strong\u003e Cummins\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine Reference:\u003c\/strong\u003e Cummins 3686525\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Engine sealing joint\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Clean the sealing surfaces and torque to spec in sequence\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComponent Group:\u003c\/strong\u003e Engine \/ Engine Gaskets \u0026amp; Seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eDirect Replacement \u0026amp; Cross-Reference Numbers:\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eThis Elring engine O-Ring serves as a direct replacement for the following part numbers:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCummins Interchange:\u003c\/strong\u003e 3686525\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eElring Interchange:\u003c\/strong\u003e 144.740, 144740\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAutomann Distributor #:\u003c\/strong\u003e 840.906525EL\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Engine O-Ring\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Elring OE (Elring Original)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Cummins (3686525)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e Manufactured to OE specification\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 lbs\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackage Dims:\u003c\/strong\u003e 1.97 x 1.38 x 0.29 in\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-Year FleetPro Warranty\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Level:\u003c\/strong\u003e OEM\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Elring (Distributed by FleetPro Parts \u0026amp; Tires)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Elring","offers":[{"title":"Default Title","offer_id":43024032170055,"sku":"840.906525EL","price":3.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8035\/2583\/files\/image_1920_76a28ca6-a0ee-413d-a636-e99aa971b515.jpg?v=1785427815","url":"https:\/\/fleetpropt.com\/products\/elring-engine-o-ring-cummins-replaces-3686525-144-740-840-906525el","provider":"FLEETPRO PARTS \u0026 TIRES ","version":"1.0","type":"link"}