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Part Number Update Bulletin No: PNU-169 Effective Date: September 12, 2012 Cancels: NA Page: 1 of 1 Subject: Double Diaphragm Spring Brake Replacements for Bendix® Air Disc Brakes This Bulletin is to announce that the double diaphragm spring brake replacement part number K026451 — used as a universal replacement for Bendix® Air Disc Brake double diaphragm spring brakes — is being obsoleted and will be replaced by part number K043329. Orders for K026451 will be filled while supplies last, with part number K043329 used as the direct replacement in the future. Current Universal Replacement Bendix® ADB Trailer Spring Brakes K026451 Future Universal Replacement Bendix® EverSure® ADB Spring Brakes K043329 Example of a Bendix® EverSure® Spring Brake (K043329) The quick reference chart below shows all the sizes of Bendix® EverSure® double diaphragm style spring brakes available for air disc brake applications: Type Type Shown on the Spring Brake* Stroke Universal Replacement Part Number T16/24 T16/5.6kN 2.25 in. / 57 mm K042457 T18/24 T18/5.6kN 2.25 in. / 57 mm K043329 T20/24 T20/5.6kN 2.5 in. / 64 mm K041960 T22/24 T22/5.6kN 2.5 in. / 64 mm K043148 T24/24 T24/5.6kN 2.5 in. / 64 mm K043270 Dust Plug Only K034202 *5.6kN refers to the force of the power spring. ©2012 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 9/12 • All Rights Reserved.