{"product_id":"coolant-reservoir-cap-21-lb-reservoir-side-freightliner-cascadia-p4-05-32312-000-572-2044","title":"Coolant Reservoir Cap - 21 lb Reservoir Side - Freightliner Cascadia P4 05-32312-000 572.2044","description":"\u003cp\u003eHold cooling-system pressure where it belongs with this \u003cstrong\u003e21 lb Coolant Reservoir Cap\u003c\/strong\u003e distributed by FleetPro Parts \u0026amp; Tires. It is the \u003cstrong\u003ereservoir-side cap\u003c\/strong\u003e for the \u003cstrong\u003eFreightliner Cascadia P4, 2018-2024\u003c\/strong\u003e, and it is the part most often overlooked when a truck starts losing coolant nobody can find on the ground. A cap with a worn seal or the wrong pressure rating bleeds off system pressure, drops the boiling point of the coolant, pushes fluid out of the overflow, and fails the shop's pressure test every single time. Manufactured by Automann to Fleet Standard specifications, this cap is stocked heavily right here in our Hanover Park, Illinois warehouse for lightning-fast shipping to fleets, diesel repair shops, and owner-operators nationwide.\u003c\/p\u003e\n\n\u003ch2\u003ePressure Held, Coolant Kept: The 21 lb Cascadia P4 Cap Advantage\u003c\/h2\u003e\n\n\u003cp\u003eA pressurised cooling system runs hotter than boiling without boiling, and the cap is the only thing making that true. This one is rated at \u003cstrong\u003e21 psi\u003c\/strong\u003e, the rating specified for the \u003cstrong\u003eCascadia P4 reservoir side\u003c\/strong\u003e, so the system reaches operating temperature and holds it instead of purging coolant into the overflow every time the truck pulls a grade. Fit a cap rated too low and you give that margin away; fit one rated too high and you load the hoses, the reservoir seams and the radiator with pressure they were never built to see.\u003c\/p\u003e\n\n\u003cp\u003eThe sealing surfaces are what age out. The rubber hardens, takes a set, and stops sealing against the filler neck long before anything looks obviously wrong, which is why a slow and unexplained coolant loss so often ends at the cap. Replacing it during a coolant service is the cheapest step in the entire job, and it is the difference between a pressure test that holds and an afternoon spent chasing a leak that was never there.\u003c\/p\u003e\n\n\u003cp\u003eAt FleetPro Parts \u0026amp; Tires, we keep the numbers straight so you order once. This cap is a direct replacement for highly searched industry numbers including \u003cstrong\u003eFreightliner 05-32312-000\u003c\/strong\u003e and its unhyphenated form \u003cstrong\u003e0532312000\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eVehicle Fitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis heavy-duty aftermarket coolant cap is intended for the following commercial application:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMake\/Model:\u003c\/strong\u003e Freightliner Cascadia P4, 2018-2024\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Reservoir side\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePressure Rating:\u003c\/strong\u003e 21 psi (21 lb)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComponent Group:\u003c\/strong\u003e Cooling System \/ Reservoirs \u0026amp; Fluid Tanks\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 Automann coolant reservoir cap serves as a direct replacement for the following part numbers:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFreightliner Interchange:\u003c\/strong\u003e 05-32312-000, 0532312000\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAutomann Distributor #:\u003c\/strong\u003e 572.2044\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 Coolant Reservoir Cap\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Reservoir Side\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePressure Rating:\u003c\/strong\u003e 21 psi (21 lb)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Freightliner Cascadia P4, 2018-2024\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 lbs\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackage Dims:\u003c\/strong\u003e 3.2 x 3.2 x 1.65 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 Fleet Standard Aftermarket\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Automann (Distributed by FleetPro Parts \u0026amp; Tires)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Automann","offers":[{"title":"Default Title","offer_id":43024030859335,"sku":"572.2044","price":9.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8035\/2583\/files\/image_1920_b9a78a57-8e57-4b5e-b352-ae8609570698.jpg?v=1785427756","url":"https:\/\/fleetpropt.com\/products\/coolant-reservoir-cap-21-lb-reservoir-side-freightliner-cascadia-p4-05-32312-000-572-2044","provider":"FLEETPRO PARTS \u0026 TIRES ","version":"1.0","type":"link"}