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Z and U Hose Bends

Mackay Automotive presents Universal Z & U Hose Bends, designed for a broad range of applications in the automotive, industrial, and machinery sectors. These hoses offer flexibility and durability, ensuring seamless fluid transfer in demanding conditions.

UNIVERSAL “Z” HOSE ™ BENDS

The Universal Z Hose™ Bends are ideal for water coolant, low-pressure fuel and oil, as well as EFV (Exhaust Fume Vent) and PCV (Positive Crankcase Ventilation) applications. They cover a wide range of small-bore market applications, reducing inventory needs while maintaining high versatility.
Mackay Universal Small Bore “Z” hose ™ bends, are specially designed to provide the largest small-bore application coverage from a few part numbers.
Mackay Z Bend hoses are Flexible through a wide range of angles and planes.

Universal “U” Hose™ Bends

The U Hose™ Bends  Universal Applications are for

  • Water / Coolant
  • Coolant Hose UHB##
  • Suitable for: Plain water, automotive coolant applications.
  • Designed for long service life with resistance to heat, ozone and electrochemical degradation.
  • Standards:

    • 6mm to 19mm ID Exceed Heater Hose Specification SAE J20R3 Type EC Class D-1 and D-2.

    • 25mm ID and larger Exceed Radiator Hose Specification SAE J20R4 Type EC Class D-1 and D-2.

Both the Z Hose™ Bends and U Hose™ Bends are engineered for reliability, durability, and long-lasting performance in various vehicle and machinery systems, offering a high-quality solution for coolant and fluid transfer applications.

UNIVERSAL “Z” HOSE ™ BENDS

Universal Applications for Water Coolant, Low- Pressure Fuel & Oil and EFV & PCV Covers majority of small-bore market.

ID mmID In.Part No.Maximum Working PressureSAE Burst Pressure RequirementWorking Temperature RangeApplication & Specification
psiMPapsiMPa MinMax
61/4ZHB6620.432491.72-40°C+125°CCoolant SAE 20R3
85/16ZHB8620.432491.72-40°C+125°CCoolant SAE 20R3
103/8ZHB10620.432491.72-40°C+125°CCoolant SAE 20R3
1215/32ZHB12620.432491.72-40°C+125°CCoolant SAE 20R3
165/8ZHB15620.432491.72-40°C+125°CCoolant SAE 20R3
193/4ZHB19510.352001.38-40°C+125°CCoolant SAE 20R3
251ZHB25350.241410.97-40°C+125°CCoolant SAE 20R4
61/4ZHB6F500.342501.72-34°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
85/16ZHB8F500.342501.72-34°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
103/8ZHB10F500.342501.72-34°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
121/2ZHB12F350.241751.2-34°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
165/8ZHB16F350.241751.2-34°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
193/4ZHB19F350.241751.2-34°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
251ZHB25F50.241751.234°C+100°CLow-Pressure Fuel & Oil Hose SAE 30R6
61/4ZHB6EFVVacuum / Vent Hose-34°C+100°CEmission Control, Fuel Vapour & PCV
85/16ZHB8EFVVacuum / Vent Hose-34°C+100°CEmission Control, Fuel Vapour & PCV
103/8ZHB10EFVVacuum / Vent Hose-34°C+100°CEmission Control, Fuel Vapour & PCV
1215/32ZHB12EFVVacuum / Vent Hose-34°C+100°CEmission Control, Fuel Vapour & PCV

U HOSE ™ BENDS

Universal Applications for Water / Coolant

ID mmID In.Part No.HeightCenterline WidthTotal WidthMaximum Working PressureRadiator Hose SAE 20R4 Burst Pressure requirement
ABCpsiMPaMinMax
165/8”USH16120mm100mm125mm620.43
16 - 195/8 - 3/4”USH16-1980mm68mm88mm510.35-40°C+125°C
251USH25140mm106mm130mm350.24
381 ½USH38145mm110mm156mm300.21
*Note
** USH16-19 has 2 different sized ends (16mm and 19mm).
** USH16-19 can be used as Heater Core Delete hose on all General Motors L Series V8’s from 1998 onwards.

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