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Hydraulic Quick Couplers

Hydraulic quick couplers join high-pressure fluid lines with a secure, leak-free connection. This collection covers ISO-B, ISO-A, flush face, and specialty hydraulic couplers and plugs in steel, brass, and stainless. Filter by series, body size, thread, and material to match your hydraulic system.

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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 320.00
$ 320.00 - $ 320.00
$ 320.00
$ 257.00
$ 257.00 - $ 257.00
$ 257.00

Foster K3B, 3/8" ISO-B Hydraulic Plug x 3/8" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K3B is a brass 3/8" plug in the FHK Serie...

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$ 320.00
$ 320.00 - $ 320.00
$ 320.00
$ 257.00
$ 257.00 - $ 257.00
$ 257.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 202.00
$ 202.00 - $ 202.00
$ 202.00
$ 162.00
$ 162.00 - $ 162.00
$ 162.00

Foster K2SLV, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Less Valve, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2SLV is a steel 1/4" plug in the FHK Ser...

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$ 202.00
$ 202.00 - $ 202.00
$ 202.00
$ 162.00
$ 162.00 - $ 162.00
$ 162.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 287.00
$ 287.00 - $ 287.00
$ 287.00
$ 229.00
$ 229.00 - $ 229.00
$ 229.00

Foster K2S6, 1/4" ISO-B Hydraulic Plug x 9/16"-18 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S6 is a steel 1/4" plug in the FHK Seri...

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$ 287.00
$ 287.00 - $ 287.00
$ 287.00
$ 229.00
$ 229.00 - $ 229.00
$ 229.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 262.00
$ 262.00 - $ 262.00
$ 262.00
$ 210.00
$ 210.00 - $ 210.00
$ 210.00

Foster K2S-104, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Silicone Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S-104 is a steel 1/4" plug in the FHK S...

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$ 262.00
$ 262.00 - $ 262.00
$ 262.00
$ 210.00
$ 210.00 - $ 210.00
$ 210.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 255.00
$ 255.00 - $ 255.00
$ 255.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00

Foster K2S-103, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, EPDM Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S-103 is a steel 1/4" plug in the FHK S...

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$ 255.00
$ 255.00 - $ 255.00
$ 255.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 259.00
$ 259.00 - $ 259.00
$ 259.00
$ 208.00
$ 208.00 - $ 208.00
$ 208.00

Foster K2S-101, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Viton Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S-101 is a steel 1/4" plug in the FHK S...

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$ 259.00
$ 259.00 - $ 259.00
$ 259.00
$ 208.00
$ 208.00 - $ 208.00
$ 208.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 449.00
$ 449.00 - $ 449.00
$ 449.00
$ 359.00
$ 359.00 - $ 359.00
$ 359.00

Foster K2S/SLV, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Less Valve, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S/SLV is a 303 stainless 1/4" plug in t...

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$ 449.00
$ 449.00 - $ 449.00
$ 449.00
$ 359.00
$ 359.00 - $ 359.00
$ 359.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 508.00
$ 508.00 - $ 508.00
$ 508.00
$ 408.00
$ 408.00 - $ 408.00
$ 408.00

Foster K2S/S-104, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Silicone Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S/S-104 is a 303 stainless 1/4" plug in...

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$ 508.00
$ 508.00 - $ 508.00
$ 508.00
$ 408.00
$ 408.00 - $ 408.00
$ 408.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 500.00
$ 500.00 - $ 500.00
$ 500.00
$ 401.00
$ 401.00 - $ 401.00
$ 401.00

Foster K2S/S-103, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, EPDM Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S/S-103 is a 303 stainless 1/4" plug in...

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$ 500.00
$ 500.00 - $ 500.00
$ 500.00
$ 401.00
$ 401.00 - $ 401.00
$ 401.00
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 %
$ 503.00
$ 503.00 - $ 503.00
$ 503.00
$ 403.00
$ 403.00 - $ 403.00
$ 403.00

Foster K2S/S-101, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S/S-101 is a 303 stainless 1/4" plug in...

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$ 503.00
$ 503.00 - $ 503.00
$ 503.00
$ 403.00
$ 403.00 - $ 403.00
$ 403.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 440.00
$ 440.00 - $ 440.00
$ 440.00
$ 352.00
$ 352.00 - $ 352.00
$ 352.00

Foster K2S/S, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S/S is a 303 stainless 1/4" plug in the...

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$ 440.00
$ 440.00 - $ 440.00
$ 440.00
$ 352.00
$ 352.00 - $ 352.00
$ 352.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 199.00
$ 199.00 - $ 199.00
$ 199.00
$ 160.00
$ 160.00 - $ 160.00
$ 160.00

Foster K2S, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2S is a steel 1/4" plug in the FHK Serie...

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$ 199.00
$ 199.00 - $ 199.00
$ 199.00
$ 160.00
$ 160.00 - $ 160.00
$ 160.00
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 %
$ 243.00
$ 243.00 - $ 243.00
$ 243.00
$ 195.00
$ 195.00 - $ 195.00
$ 195.00

Foster K2BLV, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Less Valve, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2BLV is a brass 1/4" plug in the FHK Ser...

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$ 243.00
$ 243.00 - $ 243.00
$ 243.00
$ 195.00
$ 195.00 - $ 195.00
$ 195.00
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 %
$ 322.00
$ 322.00 - $ 322.00
$ 322.00
$ 259.00
$ 259.00 - $ 259.00
$ 259.00

Foster K2B-104, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Silicone Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2B-104 is a brass 1/4" plug in the FHK S...

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$ 322.00
$ 322.00 - $ 322.00
$ 322.00
$ 259.00
$ 259.00 - $ 259.00
$ 259.00
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 %
$ 297.00
$ 297.00 - $ 297.00
$ 297.00
$ 238.00
$ 238.00 - $ 238.00
$ 238.00

Foster K2B-103, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, EPDM Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2B-103 is a brass 1/4" plug in the FHK S...

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$ 297.00
$ 297.00 - $ 297.00
$ 297.00
$ 238.00
$ 238.00 - $ 238.00
$ 238.00
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 %
$ 311.00
$ 311.00 - $ 311.00
$ 311.00
$ 248.00
$ 248.00 - $ 248.00
$ 248.00

Foster K2B-102, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Neoprene Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2B-102 is a brass 1/4" plug in the FHK S...

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$ 311.00
$ 311.00 - $ 311.00
$ 311.00
$ 248.00
$ 248.00 - $ 248.00
$ 248.00
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 %
$ 311.00
$ 311.00 - $ 311.00
$ 311.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00

Foster K2B-101, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Viton Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2B-101 is a brass 1/4" plug in the FHK S...

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$ 311.00
$ 311.00 - $ 311.00
$ 311.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 231.00
$ 231.00 - $ 231.00
$ 231.00
$ 185.00
$ 185.00 - $ 185.00
$ 185.00

Foster K2B, 1/4" ISO-B Hydraulic Plug x 1/4" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K2B is a brass 1/4" plug in the FHK Serie...

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$ 231.00
$ 231.00 - $ 231.00
$ 231.00
$ 185.00
$ 185.00 - $ 185.00
$ 185.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 176.00
$ 176.00 - $ 176.00
$ 176.00
$ 141.00
$ 141.00 - $ 141.00
$ 141.00

Foster K1S4, 1/8" ISO-B Hydraulic Plug x 7/16"-20 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1S4 is a steel 1/8" plug in the FHK Seri...

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$ 176.00
$ 176.00 - $ 176.00
$ 176.00
$ 141.00
$ 141.00 - $ 141.00
$ 141.00
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 %
$ 211.00
$ 211.00 - $ 211.00
$ 211.00
$ 169.00
$ 169.00 - $ 169.00
$ 169.00

Foster K1S-101, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Viton Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1S-101 is a steel 1/8" plug in the FHK S...

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$ 211.00
$ 211.00 - $ 211.00
$ 211.00
$ 169.00
$ 169.00 - $ 169.00
$ 169.00
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 %
$ 503.00
$ 503.00 - $ 503.00
$ 503.00
$ 403.00
$ 403.00 - $ 403.00
$ 403.00

Foster K1S/S-101, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1S/S-101 is a 303 stainless 1/8" plug in...

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$ 503.00
$ 503.00 - $ 503.00
$ 503.00
$ 403.00
$ 403.00 - $ 403.00
$ 403.00
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 %
$ 450.00
$ 450.00 - $ 450.00
$ 450.00
$ 361.00
$ 361.00 - $ 361.00
$ 361.00

Foster K1S/S, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1S/S is a 303 stainless 1/8" plug in the...

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$ 450.00
$ 450.00 - $ 450.00
$ 450.00
$ 361.00
$ 361.00 - $ 361.00
$ 361.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 150.00
$ 150.00 - $ 150.00
$ 150.00
$ 120.00
$ 120.00 - $ 120.00
$ 120.00

Foster K1S, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1S is a steel 1/8" plug in the FHK Serie...

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$ 150.00
$ 150.00 - $ 150.00
$ 150.00
$ 120.00
$ 120.00 - $ 120.00
$ 120.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 187.00
$ 187.00 - $ 187.00
$ 187.00
$ 150.00
$ 150.00 - $ 150.00
$ 150.00

Foster K1BLV, 1/8" ISO-B Hydraulic Plug x 1/8" Female NPT, ISO-B Series, Less Valve, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K1BLV is a brass 1/8" plug in the FHK Ser...

View full details
$ 187.00
$ 187.00 - $ 187.00
$ 187.00
$ 150.00
$ 150.00 - $ 150.00
$ 150.00
Save 20% Save %

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