HomeBelts and Cooling > Hoses and PipesDayco 81251 Radiator Coolant Hose - Lower, Lower - Pipe To Engine or Upper
Part #: 81251

Dayco 81251 Radiator Coolant Hose - Lower, Lower - Pipe To Engine or Upper

Flex Radiator Hose, Lower
175 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Flex Radiator Hose, Lower
Fitment: Jeep, Dodge, Alfa Romeo, Chrysler, Plymouth, American Motors, Cadillac, Ford, Chevrolet, Mercury, Oldsmobile, Pontiac, Buick, International, GMC, and Mercedes-Benz, Cherokee, Comanche, Dakota, Milano, Fifth Avenue, Diplomat, Caravelle, Gran Fury, Wagoneer, Cordoba, Imperial, Mirada, New Yorker, LeBaron, Town & Country, Aspen, RD200, Volare, AMX, Concord, Spirit, Seville, Bronco, F-100, F-150, F-250, F-350, D100, D150, D200, W150, W200, Mustang II, Monza, Vega, Maverick, Comet, Starfire, Astre, Sunbird, Apollo, MS, Nova, Omega, Ventura, G10 Van, G20 Van, G30 Van, G15/G1500 Van, G25/G2500 Van, G35/G3500 Van, Camaro, 280SE, 280SEL, D100 Pickup, D200 Pickup, D300 Pickup, W100 Pickup, W200 Pickup, W300 Pickup, Jeepster, Chevy II, Country Sedan, Country Squire, Custom, Custom 500, Galaxie 500, LTD, Ranch Wagon, Marquis, D100 Series, D200 Series, D300 Series, W100 Series, W200 Series, W300 Series, Thunderbird, Colony Park, Commuter, Marauder, Montclair, Monterey, Ambassador, Cyclone, American, Dynamic 88, 98, and Super 88
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Reliable Cooling with Dayco Flex Radiator Hose 81251

The Dayco Flex Radiator Hose 81251 is engineered to provide dependable coolant flow for a range of vehicles including Cadillac, Chevrolet, Chrysler, Dodge, Ford, Jeep, Mercury, Oldsmobile, and Pontiac models. Designed to meet the demands of various engine cooling systems, this radiator coolant hose ensures consistent performance and durability.

  • Compatible with multiple makes and models such as Ford F-150, Chevrolet Camaro, Jeep Cherokee, and Pontiac Sunbird
  • Part number 81251 for precise identification and fitment
  • Constructed to maintain coolant flow and resist heat and pressure
  • Part of the Dayco Flex Radiator Hose product line, known for flexibility and reliable sealing
  • Designed for use in radiator coolant systems to prevent leaks and overheating

About the Dayco Flex Radiator Hose Product Line

The Flex Radiator Hose line by Dayco focuses on delivering flexible, durable hoses that accommodate the thermal expansion and contraction typical in engine cooling systems. This product line emphasizes reliable sealing and resistance to heat and pressure, making it suitable for a variety of vehicle applications. The 81251 hose is part of this line, ensuring compatibility and performance across multiple vehicle makes and models.

Detailed Product Description

The Dayco Flex Radiator Hose 81251 is a radiator coolant hose designed to maintain optimal coolant circulation in your vehicle’s engine. It is compatible with a wide range of vehicles including the Ford F-100, Chevrolet Nova, Jeep Wagoneer, and Chrysler New Yorker. This hose is engineered to withstand the high temperatures and pressures found in radiator systems, helping to prevent leaks and maintain engine temperature stability. The part number 81251 ensures you receive the correct hose for your specific vehicle application.

Common Applications and Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses
  • Prevention of coolant leaks that can lead to engine overheating
  • Restoration of proper coolant flow in vehicles like the Dodge Dakota and Pontiac Firebird
  • Addressing hose swelling or softening due to heat exposure
  • Ensuring reliable coolant system performance in older models such as the Mercury Marquis and Oldsmobile Omega

Installation Notes and Tips

  • Verify compatibility with your vehicle’s make and model before installation
  • Inspect hose clamps and replace if necessary to ensure a secure fit
  • Drain coolant system prior to hose removal to avoid spills
  • Check for any signs of corrosion or damage on radiator connections
  • After installation, refill coolant and bleed the system to remove air pockets

Quality Assurance and Warranty

Dayco manufactures the Flex Radiator Hose 81251 to meet industry standards for durability and performance. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to ensure reliability in automotive cooling systems. Using this hose helps maintain the integrity of your vehicle’s radiator system and supports consistent engine operation.

This part fits 175 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2000JeepCherokee2.5LL4LowerFlex Radiator Hose
1999JeepCherokee2.5LL4LowerFlex Radiator Hose
1998JeepCherokee2.5LL4LowerFlex Radiator Hose
1997JeepCherokee2.5LL4LowerFlex Radiator Hose
1996JeepCherokee2.5LL4LowerFlex Radiator Hose
1995JeepCherokee2.5LL4LowerFlex Radiator Hose
1994JeepCherokee2.5LL4LowerFlex Radiator Hose
1993JeepCherokee2.5LL4LowerFlex Radiator Hose
1993JeepCherokee4.0LL6LowerFlex Radiator Hose
1992JeepCherokee2.5LL4LowerFlex Radiator Hose
1992JeepComanche2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1991JeepCherokee2.5LL4LowerFlex Radiator Hose
1991JeepComanche2.5LL4LowerFlex Radiator Hose
1990DodgeDakota3.9LV6LowerFlex Radiator Hose
1990JeepCherokee2.5LL4LowerFlex Radiator Hose
1990JeepComanche2.5LL4Lowerw/A.C., 24mm Comp. Head; Flex Radiator Hose
1989ChryslerFifth AvenueLowerFlex Radiator Hose
1989DodgeDakota3.9LV6LowerFlex Radiator Hose
1989JeepCherokee2.5LL4LowerFlex Radiator Hose
1989JeepComanche2.5LL4Lowerw/A.C., 24mm Comp. Head; Flex Radiator Hose
1988ChryslerFifth AvenueLowerFlex Radiator Hose
1988DodgeDakota3.9LV6LowerFlex Radiator Hose
1988JeepCherokee2.5LL4Lowerw/A.C., 24mm Comp. Head; Flex Radiator Hose
1988JeepComanche2.5LL4Lowerw/A.C., 24mm Comp. Head; Flex Radiator Hose
1987ChryslerFifth AvenueLowerFlex Radiator Hose
1987DodgeDakota3.9LV6LowerFlex Radiator Hose
1987JeepCherokee2.5LL4Lowerw/A.C., 24mm Comp. Head; Flex Radiator Hose
1987JeepComanche2.5LL4Lowerw/A.C., 24mm Comp. Head; Flex Radiator Hose
1987JeepWagoneer2.5LL4Lower24mm Comp. Head; Flex Radiator Hose
1986ChryslerFifth AvenueLowerFlex Radiator Hose
1986JeepCherokee2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1986JeepComanche2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1986JeepWagoneer2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1985ChryslerFifth AvenueLowerFlex Radiator Hose
1985JeepCherokee2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1985JeepWagoneer2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1984ChryslerFifth AvenueLowerFlex Radiator Hose
1984JeepCherokee2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1984JeepWagoneer2.5LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1983ChryslerFifth Avenue5.2LV8LowerFlex Radiator Hose
1983ChryslerImperialLowerFlex Radiator Hose
1982ChryslerImperialLowerFlex Radiator Hose
1982ChryslerNew Yorker5.2LV8LowerFlex Radiator Hose
1981ChryslerImperialLowerFlex Radiator Hose
1981ChryslerLeBaron5.2LV8LowerFlex Radiator Hose
1981ChryslerTown & Country5.2LV8LowerFlex Radiator Hose
1980ChryslerLeBaron5.2LV8LowerFlex Radiator Hose
1980ChryslerTown & Country5.2LV8LowerFlex Radiator Hose
1980DodgeAspen5.2LV8Lowerw/o Police & Taxi Pkg.; Flex Radiator Hose
1980DodgeAspen5.9LV8Lowerw/o Police & Taxi Pkg.; Flex Radiator Hose
1979CadillacSeville5.7LV8LowerFlex Radiator Hose
1979ChryslerLeBaron5.2LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1979ChryslerLeBaron5.2LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1979ChryslerLeBaron5.9LV8LowerFlex Radiator Hose
1979DodgeAspen5.2LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1979DodgeAspen5.9LV8LowerFlex Radiator Hose
1979FordBronco5.8LV8UpperFlex Radiator Hose
1979FordBronco6.6LV8UpperFlex Radiator Hose
1979FordF-1005.8LV8UpperFlex Radiator Hose
1979FordF-1006.6LV8UpperFlex Radiator Hose
1979FordF-1505.8LV8UpperFlex Radiator Hose
1979FordF-1506.6LV8UpperFlex Radiator Hose
1979FordF-2505.8LV8UpperFlex Radiator Hose
1979FordF-2506.6LV8UpperFlex Radiator Hose
1979FordF-3505.8LV8UpperFlex Radiator Hose
1979FordF-3506.6LV8UpperFlex Radiator Hose
1978CadillacSeville5.7LV8LowerFlex Radiator Hose
1978ChryslerLeBaron5.2LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1978ChryslerLeBaron5.2LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1978ChryslerLeBaron5.9LV8LowerFlex Radiator Hose
1978DodgeAspen5.2LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1978DodgeAspen5.9LV8LowerFlex Radiator Hose
1978DodgeD1004.0LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1978DodgeD1504.0LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1978DodgeD2004.0LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1978DodgeW1504.0LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1978DodgeW2004.0LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1978FordBronco5.8LV8UpperFlex Radiator Hose
1978FordBronco6.6LV8UpperFlex Radiator Hose
1978FordF-1005.8LV8UpperFlex Radiator Hose
1978FordF-1006.6LV8UpperFlex Radiator Hose
1978FordF-1505.8LV8UpperFlex Radiator Hose
1978FordF-1506.6LV8UpperFlex Radiator Hose
1978FordF-2505.8LV8UpperFlex Radiator Hose
1978FordF-2506.6LV8UpperFlex Radiator Hose
1978FordF-3505.8LV8UpperFlex Radiator Hose
1978FordF-3506.6LV8UpperFlex Radiator Hose
1977CadillacSevilleLowerFlex Radiator Hose
1977ChevroletMonza2.3LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1977ChevroletMonza2.3LL4Lowerw/o A.C., H.D. Cool; Flex Radiator Hose
1977DodgeAspen5.2LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1977DodgeAspen5.9LV8LowerFlex Radiator Hose
1977FordF-1005.8LV8UpperFlex Radiator Hose
1977FordF-1006.6LV8UpperFlex Radiator Hose
1977FordF-1505.8LV8UpperFlex Radiator Hose
1977FordF-1506.6LV8UpperFlex Radiator Hose
1977FordF-2505.8LV8UpperFlex Radiator Hose
1977FordF-2506.6LV8UpperFlex Radiator Hose
1977FordF-3505.8LV8UpperFlex Radiator Hose
1977FordF-3506.6LV8UpperFlex Radiator Hose
1977OldsmobileStarfire2.3LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1977PontiacSunbird2.3LL4LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1976CadillacSevilleLowerFlex Radiator Hose
1976ChevroletMonza2.3LL4Lowerw/A.C., w/o A.P.; Flex Radiator Hose
1976ChevroletMonza2.3LL4Lowerw/A.C., w/o P.S., w/A.P.; Flex Radiator Hose
1976ChevroletMonza2.3LL4Lowerw/o A.C., H.D. Cool; Flex Radiator Hose
1976DodgeAspen5.2LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1976DodgeAspen5.2LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1976DodgeAspen5.9LV8LowerFlex Radiator Hose
1976OldsmobileStarfire2.3LL4Lowerw/A.C., w/A.P., w/o P.S.; Flex Radiator Hose
1976PontiacSunbird2.3LL4Lowerw/A.C., w/o P.S., w/A.P.; Flex Radiator Hose
1975FordF-1507.5LV8UpperHorizontal Thermo Connection; Flex Radiator Hose
1975FordF-2507.5LV8UpperHorizontal Thermo Connection; Flex Radiator Hose
1975FordF-3507.5LV8UpperHorizontal Thermo Connection; Flex Radiator Hose
1974ChevroletNova4.1LL6Lowerw/A.C., w/A.P.; Flex Radiator Hose
1974ChevroletNova4.1LL6Lowerw/A.C., w/o A.P.; Flex Radiator Hose
1974ChevroletNova4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1974ChevroletNova5.7LV8LowerFlex Radiator Hose
1974FordF-1007.5LV8UpperFlex Radiator Hose
1974FordF-2507.5LV8UpperFlex Radiator Hose
1974FordF-3507.5LV8UpperFlex Radiator Hose
1974OldsmobileOmega4.1LL6Lowerw/A.C., w/A.P.; Flex Radiator Hose
1973ChevroletNova4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1973ChevroletNova5.0LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1973ChevroletNova5.0LV8Lowerw/o A.C., H.D. Cool; Flex Radiator Hose
1973ChevroletNova5.0LV8Lowerw/o A.C., Std. Rad.; Flex Radiator Hose
1973ChevroletNova5.7LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1973ChevroletNova5.7LV8Lowerw/o A.C., H.D. Cool; Flex Radiator Hose
1973ChevroletNova5.7LV8Lowerw/o A.C., Std. Rad.; Flex Radiator Hose
1973FordF-1007.5LV8UpperFlex Radiator Hose
1973FordF-2507.5LV8UpperFlex Radiator Hose
1973FordF-3507.5LV8UpperFlex Radiator Hose
1973GMCG15/G1500 Van4.1LL6Lowerw/M.T.; Flex Radiator Hose
1973GMCG25/G2500 Van4.1LL6Lowerw/M.T.; Flex Radiator Hose
1973GMCG35/G3500 Van4.1LL6Lowerw/M.T.; Flex Radiator Hose
1973OldsmobileOmega4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972ChevroletCamaro5.0LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1972ChevroletCamaro5.0LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972ChevroletCamaro5.7LV8LowerFlex Radiator Hose
1972ChevroletNova4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972ChevroletNova5.0LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1972ChevroletNova5.0LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972ChevroletNova5.7LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1972ChevroletNova5.7LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972GMCG15/G1500 Van4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972GMCG25/G2500 Van4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1972GMCG35/G3500 Van4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1971ChevroletCamaro5.0LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1971ChevroletCamaro5.0LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1971ChevroletCamaro5.7LV8LowerFlex Radiator Hose
1971ChevroletNova4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1971ChevroletNova5.0LV8LowerFlex Radiator Hose
1971ChevroletNova5.7LV8LowerFlex Radiator Hose
1970ChevroletCamaro5.0LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1970ChevroletCamaro5.0LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1970ChevroletCamaro5.7LV8LowerFlex Radiator Hose
1970ChevroletNova4.1LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1970ChevroletNova3.8LL6LowerFits vehicles without air conditioning.; Flex Radiator Hose
1970ChevroletNova5.0LV8LowerFlex Radiator Hose
1970ChevroletNova5.7LV8LowerCompatible with vehicles containing air conditioning.; Flex Radiator Hose
1970ChevroletNova5.7LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1969ChevroletNova4.1LL6LowerFlex Radiator Hose
1969ChevroletNova3.8LL6LowerFlex Radiator Hose
1969ChevroletNova5.0LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1969ChevroletNova5.7LV8LowerFits vehicles without air conditioning.; Flex Radiator Hose
1968FordLTD6.4LV8UpperFlex Radiator Hose
1968FordLTD7.0LV8UpperFlex Radiator Hose
1968MercuryMarquis6.4LV8UpperFlex Radiator Hose
1968MercuryMarquis7.0LV8UpperFlex Radiator Hose
1967FordThunderbird6.4LV8UpperFlex Radiator Hose
1967FordThunderbird7.0LV8UpperFlex Radiator Hose
1967MercuryColony Park6.4LV8UpperFlex Radiator Hose
1967MercuryMarquis6.4LV8UpperFlex Radiator Hose
1967MercuryMarquis6.7LV8UpperFlex Radiator Hose
1961Oldsmobile98UpperFlex Radiator Hose

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

9M17

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.