Gates is the Automotive Aftermarket leader in the unique modular assembly coolant hose segment. Gates Modular Coolant Hose is manufactured to fit specific applications and are similar to OEM specifications to include specific essential integrated OE components such as hose branches, quick-connectors, sensors, restrictors, etc.

• Specifically-engineered materials resist collapse under vacuum
• Engineered to resist electrochemical degradation - the leading cause of hose failure
• EPDM tube; synthetic fiber knit reinforcement, heat-, ozone- and chemical coolant-resistant EPDM cover
• Manufactured with OEM-exact hose components (quick connects, branch connectors/tees, sensors, etc.)
• Meets SAE 20R3 EC Class D1 under 25mm (1 in.) ID, SAE 20R4 EC Class D1 for 25mm (1 in.) ID and over
• Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)

Signs it is Time to Replace Your Coolant Hose(s)

Prevent system contamination and coolant leaks that could cause your engine to overheat by checking for these common signs of Coolant Hose damage / failure:

INTERNAL DAMAGE
Soft / mushy hose ends, usually about 2 inches from the clamp. Internally Damaged Hose

LEAKAGE
Moisture, drips or coolant bleed marks on or around the hose clamps, connectors or hose. Leaking Hose

HEAT DAMAGE
Slight swelling, or a hardened, glossy cover that is covered with cracks. Heat Damaged Hose

OZONE DAMAGE
Tiny, parallel cracks in the cover, usually at hose bends. Ozone Damaged Hose

ABRASION DAMAGE
Rubbing marks on, or damage to the hose cover. Abrasion Damaged Hose

OIL CONTAMINATION
Soft or spongy to the touch - bulges and swelling are readily apparent. Oil Contaminated Hose

Videos