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 %
$ 22.19
$ 22.19 - $ 22.19
$ 22.19
$ 17.79
$ 17.79 - $ 17.79
$ 17.79

Foster FM3203, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3203 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 22.19
$ 22.19 - $ 22.19
$ 22.19
$ 17.79
$ 17.79 - $ 17.79
$ 17.79
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 %
$ 28.69
$ 28.69 - $ 28.69
$ 28.69
$ 22.99
$ 22.99 - $ 22.99
$ 22.99

Foster SL3003W, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Automatic Sleeve Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3003W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 28.69
$ 28.69 - $ 28.69
$ 28.69
$ 22.99
$ 22.99 - $ 22.99
$ 22.99
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 %
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
$ 20.09
$ 20.09 - $ 20.09
$ 20.09

Foster FM3003W, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3003W 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 %
$ 24.89
$ 24.89 - $ 24.89
$ 24.89
$ 19.89
$ 19.89 - $ 19.89
$ 19.89

Foster FM3003S, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3003S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 24.89
$ 24.89 - $ 24.89
$ 24.89
$ 19.89
$ 19.89 - $ 19.89
$ 19.89
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 %
$ 25.09
$ 25.09 - $ 25.09
$ 25.09
$ 20.09
$ 20.09 - $ 20.09
$ 20.09

Foster FM3003HW, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Automatic, Hot Water/Viton, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3003HW is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — ...

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 %
$ 22.69
$ 22.69 - $ 22.69
$ 22.69
$ 18.19
$ 18.19 - $ 18.19
$ 18.19

Foster SL3003, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL3003 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 22.69
$ 22.69 - $ 22.69
$ 22.69
$ 18.19
$ 18.19 - $ 18.19
$ 18.19
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 %
$ 23.99
$ 23.99 - $ 23.99
$ 23.99
$ 19.19
$ 19.19 - $ 19.19
$ 19.19

Foster SL2803, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SL2803 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 23.99
$ 23.99 - $ 23.99
$ 23.99
$ 19.19
$ 19.19 - $ 19.19
$ 19.19
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 %
$ 21.39
$ 21.39 - $ 21.39
$ 21.39
$ 17.09
$ 17.09 - $ 17.09
$ 17.09

Foster FM3003, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM3003 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 %
$ 24.59
$ 24.59 - $ 24.59
$ 24.59
$ 19.69
$ 19.69 - $ 19.69
$ 19.69

Foster FM2803W, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM2803W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 24.59
$ 24.59 - $ 24.59
$ 24.59
$ 19.69
$ 19.69 - $ 19.69
$ 19.69
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 %
$ 26.59
$ 26.59 - $ 26.59
$ 26.59
$ 21.29
$ 21.29 - $ 21.29
$ 21.29

Foster FM2803S, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM2803S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 26.59
$ 26.59 - $ 26.59
$ 26.59
$ 21.29
$ 21.29 - $ 21.29
$ 21.29
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 %
$ 23.29
$ 23.29 - $ 23.29
$ 23.29
$ 18.69
$ 18.69 - $ 18.69
$ 18.69

Foster FM2803, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Automatic, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster FM2803 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 23.29
$ 23.29 - $ 23.29
$ 23.29
$ 18.69
$ 18.69 - $ 18.69
$ 18.69
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 %
$ 13.59
$ 13.59 - $ 13.59
$ 13.59
$ 10.89
$ 10.89 - $ 10.89
$ 10.89

Foster SG3703, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3703 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 13.59
$ 13.59 - $ 13.59
$ 13.59
$ 10.89
$ 10.89 - $ 10.89
$ 10.89
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 %
$ 13.49
$ 13.49 - $ 13.49
$ 13.49
$ 10.79
$ 10.79 - $ 10.79
$ 10.79

Foster SG3603, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3603 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 13.49
$ 13.49 - $ 13.49
$ 13.49
$ 10.79
$ 10.79 - $ 10.79
$ 10.79
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 %
$ 15.09
$ 15.09 - $ 15.09
$ 15.09
$ 12.09
$ 12.09 - $ 12.09
$ 12.09

Foster SG1713, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG1713 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 15.09
$ 15.09 - $ 15.09
$ 15.09
$ 12.09
$ 12.09 - $ 12.09
$ 12.09
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 %
$ 14.89
$ 14.89 - $ 14.89
$ 14.89
$ 11.89
$ 11.89 - $ 11.89
$ 11.89

Foster SG1513, 1/4" Industrial Coupler x 1/4" Push-On Hose Stem, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG1513 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 14.89
$ 14.89 - $ 14.89
$ 14.89
$ 11.89
$ 11.89 - $ 11.89
$ 11.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 14.09
$ 14.09 - $ 14.09
$ 14.09
$ 11.19
$ 11.19 - $ 11.19
$ 11.19

Foster SG3303, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3303 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 14.09
$ 14.09 - $ 14.09
$ 14.09
$ 11.19
$ 11.19 - $ 11.19
$ 11.19
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 15.89
$ 15.89 - $ 15.89
$ 15.89
$ 12.69
$ 12.69 - $ 12.69
$ 12.69

Foster SG3103D, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Sleeve Guard, Dill Valve, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3103D is a Brass 1/4" industrial coupler from the Foster 3 Series — the ...

View full details
$ 15.89
$ 15.89 - $ 15.89
$ 15.89
$ 12.69
$ 12.69 - $ 12.69
$ 12.69
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 %
$ 12.99
$ 12.99 - $ 12.99
$ 12.99
$ 10.39
$ 10.39 - $ 10.39
$ 10.39

Foster SG3103, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3103 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 12.99
$ 12.99 - $ 12.99
$ 12.99
$ 10.39
$ 10.39 - $ 10.39
$ 10.39
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 %
$ 17.69
$ 17.69 - $ 17.69
$ 17.69
$ 14.09
$ 14.09 - $ 14.09
$ 14.09

Foster SG2903, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG2903 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 17.69
$ 17.69 - $ 17.69
$ 17.69
$ 14.09
$ 14.09 - $ 14.09
$ 14.09
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 %
$ 13.89
$ 13.89 - $ 13.89
$ 13.89
$ 11.09
$ 11.09 - $ 11.09
$ 11.09

Foster SG3203, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3203 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 13.89
$ 13.89 - $ 13.89
$ 13.89
$ 11.09
$ 11.09 - $ 11.09
$ 11.09
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 %
$ 11.69
$ 11.69 - $ 11.69
$ 11.69
$ 9.39
$ 9.39 - $ 9.39
$ 9.39

Foster SG3003LV, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Sleeve Guard, Less Valve, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3003LV is a Brass 1/4" industrial coupler from the Foster 3 Series — the...

View full details
$ 11.69
$ 11.69 - $ 11.69
$ 11.69
$ 9.39
$ 9.39 - $ 9.39
$ 9.39
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 %
$ 12.89
$ 12.89 - $ 12.89
$ 12.89
$ 10.29
$ 10.29 - $ 10.29
$ 10.29

Foster SG3003, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3003 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 12.89
$ 12.89 - $ 12.89
$ 12.89
$ 10.29
$ 10.29 - $ 10.29
$ 10.29
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 %
$ 21.49
$ 21.49 - $ 21.49
$ 21.49
$ 17.19
$ 17.19 - $ 17.19
$ 17.19

Foster SG2803, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG2803 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

View full details
$ 21.49
$ 21.49 - $ 21.49
$ 21.49
$ 17.19
$ 17.19 - $ 17.19
$ 17.19
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 %
$ 4.99
$ 4.99 - $ 4.99
$ 4.99
$ 3.99
$ 3.99 - $ 3.99
$ 3.99

Foster 3SDC, 1/4" 3 Series Socket Dust Cap, Steel

Protect your 1/4" 3 Series quick sockets when not in use. The Foster 3SDC dust cap keeps dirt, chips, and moisture out of the coupling, helping pre...

View full details
$ 4.99
$ 4.99 - $ 4.99
$ 4.99
$ 3.99
$ 3.99 - $ 3.99
$ 3.99
Save 20% Save %

Request a Quote

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