Skip to content
☀️ Take an Additional 10% Off Your Entire Order with code GEARUP10 at checkout.
☀️ Additional 10% Off • GEARUP10

Foster

Foster quick couplers set the standard in pneumatic and hydraulic connections. Part of the ZSI-Foster line, Foster couplers and plugs cover the full range of industrial interchanges and body sizes in steel, brass, and stainless construction. Built for reliable, repeatable connections in air and fluid systems. Shop the full Foster range below.

Filters

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 22.79
$ 22.79 - $ 22.79
$ 22.79
$ 18.29
$ 18.29 - $ 18.29
$ 18.29

Foster FM3603, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3603 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 22.79
$ 22.79 - $ 22.79
$ 22.79
$ 18.29
$ 18.29 - $ 18.29
$ 18.29
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
$ 20.09
$ 20.09 - $ 20.09
$ 20.09

Foster FM1713W, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM1713W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
$ 20.09
$ 20.09 - $ 20.09
$ 20.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 26.69
$ 26.69 - $ 26.69
$ 26.69
$ 21.39
$ 21.39 - $ 21.39
$ 21.39

Foster SL1713, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL1713 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 26.69
$ 26.69 - $ 26.69
$ 26.69
$ 21.39
$ 21.39 - $ 21.39
$ 21.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 21.99
$ 21.99 - $ 21.99
$ 21.99
$ 17.59
$ 17.59 - $ 17.59
$ 17.59

Foster FM1713, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM1713 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 21.99
$ 21.99 - $ 21.99
$ 21.99
$ 17.59
$ 17.59 - $ 17.59
$ 17.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 26.09
$ 26.09 - $ 26.09
$ 26.09
$ 20.79
$ 20.79 - $ 20.79
$ 20.79

Foster SL1513, 1/4" Industrial Coupler x 1/4" Push-On Hose Stem, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL1513 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 26.09
$ 26.09 - $ 26.09
$ 26.09
$ 20.79
$ 20.79 - $ 20.79
$ 20.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 21.39
$ 21.39 - $ 21.39
$ 21.39
$ 17.09
$ 17.09 - $ 17.09
$ 17.09

Foster FM1513, 1/4" Industrial Coupler x 1/4" Push-On Hose Stem, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM1513 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 21.39
$ 21.39 - $ 21.39
$ 21.39
$ 17.09
$ 17.09 - $ 17.09
$ 17.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 25.89
$ 25.89 - $ 25.89
$ 25.89
$ 20.69
$ 20.69 - $ 20.69
$ 20.69

Foster FM3303W, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3303W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 25.89
$ 25.89 - $ 25.89
$ 25.89
$ 20.69
$ 20.69 - $ 20.69
$ 20.69
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 25.69
$ 25.69 - $ 25.69
$ 25.69
$ 20.49
$ 20.49 - $ 20.49
$ 20.49

Foster SL3303, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3303 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 25.69
$ 25.69 - $ 25.69
$ 25.69
$ 20.49
$ 20.49 - $ 20.49
$ 20.49
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 22.39
$ 22.39 - $ 22.39
$ 22.39
$ 17.89
$ 17.89 - $ 17.89
$ 17.89

Foster FM3303, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3303 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 22.39
$ 22.39 - $ 22.39
$ 22.39
$ 17.89
$ 17.89 - $ 17.89
$ 17.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 30.29
$ 30.29 - $ 30.29
$ 30.29
$ 24.19
$ 24.19 - $ 24.19
$ 24.19

Foster SL3103W, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic Sleeve Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3103W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 30.29
$ 30.29 - $ 30.29
$ 30.29
$ 24.19
$ 24.19 - $ 24.19
$ 24.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 25.49
$ 25.49 - $ 25.49
$ 25.49
$ 20.39
$ 20.39 - $ 20.39
$ 20.39

Foster FM3103W, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3103W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 25.49
$ 25.49 - $ 25.49
$ 25.49
$ 20.39
$ 20.39 - $ 20.39
$ 20.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
$ 20.09
$ 20.09 - $ 20.09
$ 20.09

Foster FM3103S, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3103S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
$ 20.09
$ 20.09 - $ 20.09
$ 20.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 29.09
$ 29.09 - $ 29.09
$ 29.09
$ 23.29
$ 23.29 - $ 23.29
$ 23.29

Foster SL3103HW, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic Sleeve Lock, Hot Water/Viton, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3103HW is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — ...

View full details
$ 29.09
$ 29.09 - $ 29.09
$ 29.09
$ 23.29
$ 23.29 - $ 23.29
$ 23.29
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 25.49
$ 25.49 - $ 25.49
$ 25.49
$ 20.39
$ 20.39 - $ 20.39
$ 20.39

Foster FM3103HW, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic, Hot Water/Viton, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3103HW is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — ...

View full details
$ 25.49
$ 25.49 - $ 25.49
$ 25.49
$ 20.39
$ 20.39 - $ 20.39
$ 20.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 22.59
$ 22.59 - $ 22.59
$ 22.59
$ 18.09
$ 18.09 - $ 18.09
$ 18.09

Foster FM3103H, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3103H is a Brass 1/4" industrial coupler from the Foster 3 Series — the ...

View full details
$ 22.59
$ 22.59 - $ 22.59
$ 22.59
$ 18.09
$ 18.09 - $ 18.09
$ 18.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 27.49
$ 27.49 - $ 27.49
$ 27.49
$ 21.99
$ 21.99 - $ 21.99
$ 21.99

Foster SL3103D, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic Sleeve Lock, Dill Valve, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3103D is a Brass 1/4" industrial coupler from the Foster 3 Series — the ...

View full details
$ 27.49
$ 27.49 - $ 27.49
$ 27.49
$ 21.99
$ 21.99 - $ 21.99
$ 21.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 22.39
$ 22.39 - $ 22.39
$ 22.39
$ 17.89
$ 17.89 - $ 17.89
$ 17.89

Foster FM3103D, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic, Dill Valve, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3103D is a Brass 1/4" industrial coupler from the Foster 3 Series — the ...

View full details
$ 22.39
$ 22.39 - $ 22.39
$ 22.39
$ 17.89
$ 17.89 - $ 17.89
$ 17.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 25.29
$ 25.29 - $ 25.29
$ 25.29
$ 20.19
$ 20.19 - $ 20.19
$ 20.19

Foster SL3103, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3103 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 25.29
$ 25.29 - $ 25.29
$ 25.29
$ 20.19
$ 20.19 - $ 20.19
$ 20.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 21.99
$ 21.99 - $ 21.99
$ 21.99
$ 17.59
$ 17.59 - $ 17.59
$ 17.59

Foster FM3103, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3103 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 21.99
$ 21.99 - $ 21.99
$ 21.99
$ 17.59
$ 17.59 - $ 17.59
$ 17.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 26.49
$ 26.49 - $ 26.49
$ 26.49
$ 21.19
$ 21.19 - $ 21.19
$ 21.19

Foster SL2903, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL2903 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 26.49
$ 26.49 - $ 26.49
$ 26.49
$ 21.19
$ 21.19 - $ 21.19
$ 21.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 21.59
$ 21.59 - $ 21.59
$ 21.59
$ 17.29
$ 17.29 - $ 17.29
$ 17.29

Foster FM2903, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM2903 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 21.59
$ 21.59 - $ 21.59
$ 21.59
$ 17.29
$ 17.29 - $ 17.29
$ 17.29
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 26.69
$ 26.69 - $ 26.69
$ 26.69
$ 21.39
$ 21.39 - $ 21.39
$ 21.39

Foster FM3203W, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3203W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 26.69
$ 26.69 - $ 26.69
$ 26.69
$ 21.39
$ 21.39 - $ 21.39
$ 21.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 23.69
$ 23.69 - $ 23.69
$ 23.69
$ 18.99
$ 18.99 - $ 18.99
$ 18.99

Foster FM3203H, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3203H is a Brass 1/4" industrial coupler from the Foster 3 Series — the ...

View full details
$ 23.69
$ 23.69 - $ 23.69
$ 23.69
$ 18.99
$ 18.99 - $ 18.99
$ 18.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 23.49
$ 23.49 - $ 23.49
$ 23.49
$ 18.79
$ 18.79 - $ 18.79
$ 18.79

Foster SL3203, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3203 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 23.49
$ 23.49 - $ 23.49
$ 23.49
$ 18.79
$ 18.79 - $ 18.79
$ 18.79
Save 20% Save %

Request a Quote

Bulk and dealer pricing. Tell us what you need and we’ll reply within one business day.