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The Peterbilt Manifold Coolant Return channels spent coolant from the engine back to the radiator. Fabricated from 304 stainless steel, it resists corrosion and ensures long service life in demanding environments. The tube measures 1 inch by 5/8 inch at the ends, has 5/8‑inch hose ports, and uses three brackets to mount securely to the frame rail with no threaded fittings required. By providing a smooth pathway for coolant to return to the radiator, it helps maintain correct engine temperature and prevents localized hot spots. Made in the USA, this Peterbilt V58‑1042‑121 coolant return pipe is a direct replacement that restores proper cooling system function.
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