DAYCO
More Information for DAYCO 71421
{Alternate Inventory Numbers: 71421:8, E71421}
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DAYCO 71421  
$8.93
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$8.93
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DAYCO 71421 Specifications
ColorBlack
Contains Heat ShieldNo
Contains Protective SleeveYes
End 1 Inside Diameter (IN)1 1/2
End 2 Inside Diameter (IN)1 3/4
Hose TypeDual I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height (IN)21
Curved

Designed to replace original equipment manufacturer hose, Dayco Molded Radiator and Bypass Hose is built with knitted reinforcement and EPDM construction which provides high strength and resistance to oil, mud, salt, road debris, ozone, coolants, and temperature variations of -40F (-40C) to +257F (+125C) that are required for OEM hose replacements.

Features & Benefits:
  • The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.
  • Meets SAE J20R4 EC, Class D-1 requirements
Service Tip: Squeeze along the hose and feel for inconsistencies; replace any hose that is soft, spongy or crunchy.
Signs it is Time to Replace Your Radiator Hose(s)

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

INTERNAL DAMAGE

Soft / mushy hose ends, usually about 2 inches from the clamp.

Internally Damaged Hose
Internally Damaged Hose
LEAKAGE

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

Leak Damaged Hose
Leaking Hose
HEAT DAMAGE

Slight swelling, or a hardened, glossy cover that is covered with cracks.

Heat Damaged Hose
Heat Damaged Hose
OZONE DAMAGE

Tiny, parallel cracks in the cover, usually at hose bends.

Ozone Damaged Hose
Ozone Damaged Hose
ABRASION DAMAGE

Rubbing marks on, or damage to the hose cover.

Abrasion Damaged Hose
Abrasion Damaged Hose
OIL CONTAMINATION

Soft or spongy to the touch - bulges and swelling are readily apparent.

Oil Damaged Hose
Oil Contaminated Hose
Cooling System Maintenance | Tips & Tools

Without regular maintenance, cooling system components will degrade and fail prematurely, which can lead to costly engine damage. Protect your engine with simple preventative maintenance:

  • Completely drain and flush the system using Cooling System Flush prior to installation. Flushing the system is critical to prevent system contamination and failure.
  • Consider replacing the Thermostat and Radiator Cap as part of routine preventative maintenance. System contamination can cause these parts to degrade and fail over time, which can lead to severe engine damage from overheating.
  • Refill radiator with fresh Coolant / Antifreeze according to the volume and formula specified in your Owner's Manual. Inspect levels and condition every year.
Additional Resources

Hose Replacement Tips
OEM / Interchange Numbers: 15548679, 15567835, 15592592, 15607231, 15607232, 15655153, 15659491, 15671759, 15958019, 15972896

Closeout Inventory Warranty Information:
Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).

Regular Inventory Warranty Information:
12 Months/12,000 Miles