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

Flexfab 5515-100X12, 1.00" x 12 ft, 3-Ply Blue Silicone Coolant Hose, 25mm

by Flexfab
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$ 4,210.00
$ 4,210.00 - $ 4,210.00
$ 4,210.00
$ 3,368.00
$ 3,368.00 - $ 3,368.00
$ 3,368.00
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Quick Specs

BrandFlexfab
Series5515
TypeHose
Body Size1"
Length12ft
ColorBlue

Performance & Construction

Construction Blue silicone, 3-ply polyester
Inside Diameter 1.00" (25 mm)
Outside Diameter 1.32" (34 mm)
Actual Burst Pressure 450 PSI
Working Pressure ~150 PSI (1/3 of burst)
Temperature Range -65F to +350F
Wall Thickness .140"/.190"
Standards SAE J20 R1 Class A; TMC RP303B Cl I Gr II
Origin Made in USA

Product Details

Product Details

The Flexfab 5515-100X12 is a blue silicone, 3-ply polyester hose engineered for demanding engine environments. It resists hardening, cracking, cold leaks, aging, and many chemicals, making it a durable, long-lasting solution for diesel, automotive, marine, agricultural, and industrial cooling systems. The recommended Flexfab clamp for this size is shown in the chart below.

Why this hose

  • Blue silicone, 3-ply polyester — durable construction engineered for demanding cooling-system service.
  • -65F to +350F range — stays flexible in cold and handles under-hood heat without hardening or cracking.
  • Resists hardening, cracking, cold leaks, aging, and many chemicals — long service life where ordinary rubber fails.
  • Meets SAE J20 R1 Class A; TMC RP303B Cl I Gr II — engineered to recognized heavy-duty hose standards.

Frequently asked questions

What clamp does it take?
Use the Flexfab 2582‑0016 clamp, sized to this hose’s outside diameter. Two clamps per connection is standard practice.

Flexfab 5515 & 5500 Series — Complete Size & Clamp Chart

Every size in the series. The 5515 (blue) and 5500 (green) hoses are the same construction in different colors. Click a part number to open that product. The clamp column shows the Flexfab clamp(s) that fit each hose OD.

Blue
5515		 Green
5500		 ID
(in)		 ID
(mm)		 OD
(in)		 OD
(mm)		 Actual
Burst		 SAE TMC Weight
(lb/ft)		 Matching
Clamp
5515‑038
5515‑038X12 		5500‑038 0.38" 10 0.70" 18 500 PSI 425.0 125 0.12 2582‑0004
5515‑050
5515‑050X12 		5500‑050 0.50" 13 0.82" 21 500 PSI 425.0 125 0.16 2582‑0006
5515‑062
5515‑062X12 		5500‑062 0.63" 16 0.95" 24 485 PSI 425.0 125 0.2 2582‑0010
5515‑075
5515‑075X12 		5500‑075 0.75" 19 1.07" 27 475 PSI 325.0 125 0.24 2582‑0012
5515‑087
5515‑087X12 		5500‑087 0.88" 22 1.20" 30 465 PSI 300.0 125 0.28 2582‑0012
5515‑100
5515‑100X12 		5500‑100 1.00" 25 1.32" 34 450 PSI 300.0 125 0.32 2582‑0016
5515‑112
5515‑112X12 		5500‑112
5500‑112X12 		1.13" 29 1.45" 37 435 PSI 300.0 125 0.36 2582‑0016 or 2584‑0175
5515‑125
5515‑125X12 		5500‑125
5500‑125X12 		1.25" 32 1.57" 40 425 PSI 275.0 125 0.4 2582‑0020 or 2584‑0175
5515‑138
5515‑138X12 		— 1.38" 35 1.70" 43 400 PSI 250.0 125 0.44 2582‑0020 or 2584‑0212
5515‑150
5515‑150X12 		5500‑150
5500‑150X12 		1.50" 38 1.82" 46 375 PSI 250.0 125 0.48 2582‑0024 or 2584‑0212
5515‑162
5515‑162X12 		5500‑162 1.63" 41 1.95" 50 350 PSI 225.0 125 0.52 2582‑0024 or 2584‑0212
5515‑175
5515‑175X12 		5500‑175 1.75" 44 2.07" 53 300 PSI 225.0 125 0.56 2582‑0028 or 2584‑0262
5515‑187
5515‑187X12 		5500‑187 1.88" 48 2.20" 56 250 PSI 200.0 100 0.6 2582‑0032 or 2584‑0262
5515‑200
5515‑200X12 		5500‑200
5500‑200X12 		2.00" 51 2.32" 59 250 PSI 200.0 100 0.64 2582‑0032 or 2584‑0262
5515‑212
5515‑212X12 		5500‑212 2.13" 54 2.45" 62 235 PSI 175.0 100 0.68 2582‑0032 or 2584‑0262
5515‑225
5515‑225X12 		— 2.25" 57 2.57" 65 225 PSI 175.0 100 0.72 2582‑0036 or 2584‑0312
5515‑238
5515‑238X12 		5500‑238 2.38" 60 2.70" 69 210 PSI 150.0 100 0.76 2582‑0040 or 2584‑0312
5515‑250
5515‑250X12 		5500‑250 2.50" 64 2.82" 72 200 PSI 150.0 100 0.8 2582‑0040 or 2584‑0312
5515‑262
5515‑262X12 		5500‑262 2.63" 67 2.95" 75 200 PSI 125.0 100 0.84 2582‑0040 or 2584‑0312
5515‑275
5515‑275X12 		5500‑275 2.75" 70 3.07" 78 200 PSI 125.0 100 0.88 2582‑0044 or 2584‑0362
5515‑287
5515‑287X12 		— 2.88" 73 3.20" 81 200 PSI 100.0 100 0.92 2582‑0044 or 2584‑0362
5515‑300
5515‑300X12 		— 3.00" 76 3.32" 84 200 PSI 100.0 100 0.96 2582‑0048 or 2584‑0362
5515‑312
5515‑312X12 		5500‑312 3.13" 80 3.45" 88 175 PSI 75.0 100 1.0 2582‑0048 or 2584‑0362
5515‑325
5515‑325X12 		5500‑325 3.25" 83 3.57" 91 175 PSI 75.0 100 1.04 2582‑0052 or 2584‑0412
5515‑338
5515‑338X12 		5500‑338 3.38" 86 3.70" 94 150 PSI 75.0 100 1.08 2582‑0052 or 2584‑0412
5515‑350
5515‑350X12 		5500‑350 3.50" 89 3.82" 97 150 PSI 75.0 100 1.12 2582‑0056 or 2584‑0412
5515‑375
5515‑375X12 		5500‑375 3.75" 95 4.07" 103 135 PSI 50.0 100 1.2 2582‑0060 or 2584‑0412
5515‑400
5515‑400X12 		5500‑400 4.00" 102 4.32" 110 125 PSI 50.0 100 1.28 2582‑0064 or 2584‑0462
5515‑450
5515‑450X12 		5500‑450 4.50" 114 4.82" 122 100 PSI — — 1.44 2582‑0072 or 2584‑0512
5515‑500
5515‑500X12 		5500‑500 5.00" 127 5.32" 135 90 PSI — — 1.6 2584‑0562
5515‑550 — 5.50" 140 5.82" 148 75 PSI — — 1.76 2584‑0612
5515‑600
5515‑600X12 		5500‑600 6.00" 152 6.32" 161 75 PSI — — 1.92 2584‑0662

Pairs With

Flexfab 2582-0016 Lined Worm Gear Clamp, 0.75"–1.00" ID, 300 SS, 10 Per Box Flexfab 2582-0016 Lined Worm Gear Clamp The matching half for this connection. Most buyers need both. $ 355.00
FLEXFAB

Industrial silicone hose engineered for heater, coolant, and high temperature service. Genuine Flexfab product with correct part numbers and specifications.

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