Gates Molded Coolant Hose 22437 — OE-Style EPDM Radiator & Heater Hose, Direct-Fit

Gates 22437 Premium Molded Coolant Hose is a pre-shaped, OE-compatible radiator and heater hose engineered to deliver a reliable, leak-resistant coolant pathway for upper, lower, bypass and heater applications.

This molded coolant hose from Gates is designed to match original equipment form and function while using durable materials that resist collapse, chemical attack and ozone deterioration. Built with an EPDM tube, synthetic fiber knit reinforcement and an EPDM cover formulated for heat and coolant resistance, the 22437 offers a factory-style replacement without the need to source parts from an OE dealer. It’s part of Gates’ extensive molded hose lineup aimed at offering technicians and DIYers a broad selection of direct-fit replacement hoses.

How does this hose match original equipment fit and routing?

The Gates 22437 is premolded to mirror the bends and attachment points of the factory hose so it installs without modification. That OE-like shaping helps ensure proper clearance from nearby components and secure sealing at the connections.

• Pre-formed contours replicate factory routing for correct fit.
• Precision end shapes for consistent clamp sealing.
• Designed to avoid contact with pulleys, brackets and chassis parts.

What materials and construction give this hose long-term durability?

This hose combines an EPDM inner tube and cover with a synthetic fiber knit reinforcement to resist vacuum collapse and maintain strength under pressure. The cover is engineered to withstand heat, ozone and exposure to typical engine coolants, reducing the common failure modes of replacement hoses.

• EPDM tube resists coolant chemicals and temperature swings.
• Synthetic fiber knit reinforcement maintains shape and pressure tolerance.
• EPDM cover formulated for ozone and heat resistance.

Will the 22437 stand up to the common causes of hose failure?

Gates addresses leading failure mechanisms by selecting materials that resist electrochemical degradation and collapse under vacuum. That makes the 22437 less prone to premature deterioration compared with hoses made from lower-grade compounds.

• Engineered to limit electrochemical degradation at clamped connections.
• Construction resists collapse during engine vacuum conditions.
• Meets SAE 20R4 class D2 and DIN 73411 class A requirements for performance.

How easy is it to install and what applications does it cover?

Installation is straightforward for anyone replacing upper, lower, bypass or heater hoses; the pre-shaped design minimizes trimming or alteration. Gates supplies this hose as a direct-fit option for applications that require the 22437 geometry and specifications.

• Direct-fit pre-shaped hose reduces installation time and adjustments.
• Fits a wide range of coolant system positions—upper, lower, bypass and heater.
• Sized and finished for clamp compatibility and leak-free sealing.

Who is this for: The Gates 22437 Premium Molded Coolant Hose is intended for automotive technicians, fleet maintenance shops and knowledgeable DIYers who need an OEM-matching replacement that emphasizes durability and correct fit. Choose this hose when you want a factory-style molded part with materials and construction designed to resist the common modes of coolant hose failure while keeping installation quick and predictable.