More Information for DAYCO 70541
{Alternate Inventory Numbers: B70541}
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DAYCO 70541 Specifications
Contains Heat ShieldN
Contains Protective SleeveN
End 1 Inside Diameter1 1/2 in.
End 2 Inside Diameter1 1/2 in.
Hose TypeSingle I.D. Hose
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height7 1/2 in.

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

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


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

Internally Damaged Hose
Internally Damaged Hose

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

Leak Damaged Hose
Leaking Hose

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

Heat Damaged Hose
Heat Damaged Hose

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

Ozone Damaged Hose
Ozone Damaged Hose

Rubbing marks on, or damage to the hose cover.

Abrasion Damaged Hose
Abrasion Damaged Hose

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

Oil Damaged Hose
Oil Contaminated Hose
Additional Resources

Hose Replacement Tips
OEM / Interchange Numbers: 1336812, 145038M1, 1M518, 2264768, 2268912, 233835M1, 2658370, 2658403, 2806195, 3708930, 3766580, 3768767, 3789700, 501303010A, 607255C1, 607259C1, 6262582, 731174M1, 982332, BH1030, BH977, C5NN8260A, C5NN8260E, D27155, F02E8A577BC, F23E8A577AC, F23Z8A507A, F23Z8A507AA, T12990T

Warranty Information:
12 Months/12,000 Miles