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Flexfab

Flexfab is the standard in silicone hose for the systems that punish ordinary rubber. From blue and green silicone heater and coolant hose to turbo sleeves, charge air connectors, reducers, elbows, and stainless clamps, Flexfab products are engineered for the heat, pressure, and vibration of diesel, marine, transit, and heavy-duty applications. Built in the USA. Shop the full Flexfab range below by hose series, type, size, or color.

  • Flexfab KIT5003D heater hose repair kit hose and clamp kit
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    $ 49.79
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    $ 49.79
    $ 39.79
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    $ 39.79

    Flexfab 5581-050, 0.50" x 3 ft, 4-Ply Blue Silicone Coolant Hose, 13mm

    In stock

    Keep your cooling system sealed and reliable in the harshest engine bays with the Flexfab 5581-050 4-ply silicone coolant hose. A versatile heavy-d...

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    $ 49.79
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    $ 49.79
    $ 39.79
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    $ 39.79
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  • Flexfab KIT5003D heater hose repair kit hose and clamp kit
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    $ 193.09
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    $ 193.09
    $ 154.49
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    $ 154.49

    Flexfab 5581-038X12, 0.38" x 12 ft, 4-Ply Blue Silicone Coolant Hose, 10mm

    In stock

    Keep your cooling system sealed and reliable in the harshest engine bays with the Flexfab 5581-038X12 4-ply silicone coolant hose. A versatile heav...

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    $ 193.09
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    $ 193.09
    $ 154.49
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    $ 154.49
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  • Flexfab KIT5003D heater hose repair kit hose and clamp kit
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    $ 48.29
    $ 48.29 - $ 48.29
    $ 48.29
    $ 38.59
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    $ 38.59

    Flexfab 5581-038, 0.38" x 3 ft, 4-Ply Blue Silicone Coolant Hose, 10mm

    In stock

    Keep your cooling system sealed and reliable in the harshest engine bays with the Flexfab 5581-038 4-ply silicone coolant hose. A versatile heavy-d...

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    $ 48.29
    $ 48.29 - $ 48.29
    $ 48.29
    $ 38.59
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    $ 38.59
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  • Flexfab KIT5003D heater hose repair kit hose and clamp kit
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    $ 271.89
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    $ 271.89
    $ 217.49
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    $ 217.49

    Flexfab 5526-062x50, 5/8" ID x 50 ft Box Blue Silicone Heater Hose, 16mm 350F Radiator Coolant

    In stock

    Upgrade your heater and coolant lines with the Flexfab 5526-062x50 standard silicone heater hose — a 50-foot box of 5/8" ID hose engineered for sup...

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    $ 271.89
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    $ 217.49
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    $ 217.49
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    $ 95.98
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    $ 95.98
    $ 76.78
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    $ 76.78

    Flexfab 7701-200, 2.00" X 3 ft, 3-Ply Fiberglass Reinforced Turbo Sleeve, 51mm

    In stock

    FlexFab Series: 7701 Part Number: 7701-200 Inside Diameter (ID): 2.00" (51mm) Outside Diameter (OD): 2.19" (56mm) Hose Length: 3 feet Wall Thickn...

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    $ 95.98
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    $ 76.78
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    $ 76.78
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    $ 415.69
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    $ 415.69
    $ 332.55
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    $ 332.55

    Flexfab 5521-125, 1-1/4" x 25 ft Green Premium Silicone Heater Hose, 1.25"

    In stock

    FlexFab Series: 5521 Part Number: 5521-125 Inside Diameter (ID): 1.25" (32mm) Outside Diameter (OD): 1.64" (42mm) Hose Length: 25' Bend Radious: ...

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    $ 415.69
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    $ 415.69
    $ 332.55
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    $ 332.55
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    $ 481.29
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    $ 481.29
    $ 385.03
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    $ 385.03

    Flexfab 5521-087, 7/8" x 50 ft Green Premium Silicone Heater Hose, .88"

    In stock

    FlexFab Series: 5521 Part Number: 5521-087 Suggested Clamp: FLX2582-0012 Inside Diameter (ID): 0.88" (22mm) Outside Diameter (OD): 1.27" (32mm)...

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    $ 481.29
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    $ 481.29
    $ 385.03
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    $ 385.03
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    $ 255.49
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    $ 255.49
    $ 204.39
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    $ 204.39

    Flexfab 5521-087, 7/8" x 25 ft Green Premium Silicone Heater Hose, .88"

    In stock

    FlexFab Series: 5521 Part Number: 5521-087 Suggested Clamp: FLX2582-0012 Inside Diameter (ID): 0.88" (22mm) Outside Diameter (OD): 1.27" (32mm)...

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    $ 255.49
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    $ 204.39
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    $ 204.39
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    $ 449.99
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    $ 359.99
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    $ 359.99

    Flexfab 5521-075, 3/4" x 50 ft Green Premium Silicone Heater Hose, .75"

    In stock

    FlexFab Series: 5521 Part Number: 5521-075 Suggested Clamp: FLX2582-0012 Inside Diameter (ID): 0.75" (19mm) Outside Diameter (OD): 1.14" (29mm)...

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    $ 449.99
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    $ 359.99
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    $ 359.99
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    $ 2,219.19
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    $ 2,219.19
    $ 1,553.43
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    $ 1,553.43

    Flexfab 5526-050, 1/2" x 500 ft Blue Silicone Heater Hose, .50" (Reel)

    In stock

    FlexFab Series: 5526 Part Number: 5526-050 Suggested Clamp: FLX2582-0006 Inside Diameter (ID): 0.50" (13mm) Outside Diameter (OD): 0.83" (21mm)...

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    $ 2,219.19
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    $ 2,219.19
    $ 1,553.43
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    $ 1,553.43
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    $ 189.49
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    $ 151.59
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    $ 151.59

    Flexfab 5500-600, 6.00" X 3 ft, 3-Ply Green Silicone Coolant Hose, 152mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-600 Inside Diameter (ID): 6.00" (152mm) Outside Diameter (OD): 6.32" (161mm) Hose Length: 3 feet Wall Thic...

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    $ 189.49
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    $ 151.59
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    $ 151.59
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    $ 173.69
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    $ 138.95
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    $ 138.95

    Flexfab 5500-550, 5.50" X 3 ft, 3-Ply Green Silicone Coolant Hose, 140mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-550 Inside Diameter (ID): 5.50" (140mm) Outside Diameter (OD): 5.82" (148mm) Hose Length: 3 feet Wall Thic...

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    $ 173.69
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    $ 138.95
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    $ 138.95
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    $ 129.99
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    $ 103.99
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    $ 103.99

    Flexfab 5500-400, 4.00" X 3 ft, 3-Ply Green Silicone Coolant Hose, 102mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-400 Inside Diameter (ID): 4.00" (102mm) Outside Diameter (OD): 4.32" (110mm) Hose Length: 3 feet Wall Thic...

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    $ 129.99
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    $ 103.99
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    $ 103.99
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    $ 125.09
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    $ 125.09
    $ 100.07
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    $ 100.07

    Flexfab 5500-387, 3.88" X 3 ft, 3-Ply Green Silicone Coolant Hose, 99mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-387 Inside Diameter (ID): 3.88" (99mm) Outside Diameter (OD): 4.20" (107mm) Hose Length: 3 feet Wall Thick...

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    $ 125.09
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    $ 125.09
    $ 100.07
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    $ 100.07
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    $ 120.39
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    $ 120.39
    $ 96.31
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    $ 96.31

    Flexfab 5500-375, 3.75" X 3 ft, 3-Ply Green Silicone Coolant Hose, 95mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-375 Inside Diameter (ID): 3.75" (95mm) Outside Diameter (OD): 4.07" (103mm) Hose Length: 3 feet Wall Thick...

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    $ 120.39
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    $ 120.39
    $ 96.31
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    $ 96.31
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    $ 111.39
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    $ 111.39
    $ 89.11
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    $ 89.11

    Flexfab 5500-350, 3.50" X 3 ft, 3-Ply Green Silicone Coolant Hose, 89mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-350 Inside Diameter (ID): 3.50" (89mm) Outside Diameter (OD): 3.82" (97mm) Hose Length: 3 feet Wall Thickn...

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    $ 111.39
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    $ 111.39
    $ 89.11
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    $ 89.11
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    $ 107.19
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    $ 107.19
    $ 85.75
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    $ 85.75

    Flexfab 5500-338, 3.38" X 3 ft, 3-Ply Green Silicone Coolant Hose, 86mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-338 Inside Diameter (ID): 3.38" (86mm) Outside Diameter (OD): 3.70" (94mm) Hose Length: 3 feet Wall Thickn...

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    $ 107.19
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    $ 107.19
    $ 85.75
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    $ 85.75
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    $ 103.09
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    $ 103.09
    $ 82.47
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    $ 82.47

    Flexfab 5500-325, 3.25" X 3 ft, 3-Ply Green Silicone Coolant Hose, 83mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-325 Inside Diameter (ID): 3.25" (83mm) Outside Diameter (OD): 3.57" (91mm) Hose Length: 3 feet Wall Thickn...

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    $ 103.09
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    $ 103.09
    $ 82.47
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    $ 82.47
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    $ 99.09
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    $ 99.09
    $ 79.27
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    $ 79.27

    Flexfab 5500-312, 3.13" X 3 ft, 3-Ply Green Silicone Coolant Hose, 80mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-312 Inside Diameter (ID): 3.13" (80mm) Outside Diameter (OD): 3.45" (88mm) Hose Length: 3 feet Wall Thickn...

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    $ 99.09
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    $ 99.09
    $ 79.27
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    $ 79.27
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    $ 91.79
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    $ 91.79
    $ 73.43
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    $ 73.43

    Flexfab 5500-287, 2.88" X 3 ft, 3-Ply Green Silicone Coolant Hose, 73mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-287 Inside Diameter (ID): 2.88" (73mm) Outside Diameter (OD): 3.20" (81mm) Hose Length: 3 feet Wall Thickn...

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    $ 91.79
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    $ 91.79
    $ 73.43
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    $ 73.43
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    $ 88.09
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    $ 88.09
    $ 70.47
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    $ 70.47

    Flexfab 5500-275, 2.75" X 3 ft, 3-Ply Green Silicone Coolant Hose, 70mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-275 Inside Diameter (ID): 2.75" (70mm) Outside Diameter (OD): 3.07" (78mm) Hose Length: 3 feet Wall Thickn...

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    $ 88.09
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    $ 88.09
    $ 70.47
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    $ 70.47
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    $ 84.79
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    $ 84.79
    $ 67.83
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    $ 67.83

    Flexfab 5500-262, 2.63" X 3 ft, 3-Ply Green Silicone Coolant Hose, 67mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-262 Inside Diameter (ID): 2.63" (67mm) Outside Diameter (OD): 2.95" (75mm) Hose Length: 3 feet Wall Thickn...

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    $ 84.79
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    $ 84.79
    $ 67.83
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    $ 67.83
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    $ 81.89
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    $ 81.89
    $ 65.51
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    $ 65.51

    Flexfab 5500-250, 2.50" X 3 ft, 3-Ply Green Silicone Coolant Hose, 64mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-250 Inside Diameter (ID): 2.50" (64mm) Outside Diameter (OD): 2.82" (72mm) Hose Length: 3 feet Wall Thickn...

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    $ 81.89
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    $ 81.89
    $ 65.51
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    $ 65.51
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    $ 72.49
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    $ 72.49
    $ 57.99
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    $ 57.99

    Flexfab 5500-212, 2.13" X 3 ft, 3-Ply Green Silicone Coolant Hose, 54mm

    In stock

    FlexFab Series: 5500 Part Number: 5500-212 Inside Diameter (ID): 2.13" (54mm) Outside Diameter (OD): 2.45" (62mm) Hose Length: 3 feet Wall Thickn...

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    $ 72.49
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    $ 72.49
    $ 57.99
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    $ 57.99
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