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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 %
$ 421.00
$ 421.00 - $ 421.00
$ 421.00
$ 338.00
$ 338.00 - $ 338.00
$ 338.00

Foster K3B-101, 3/8" ISO-B Hydraulic Plug x 3/8" 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 K3B-101 is a brass 3/8" plug in the FHK S...

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$ 421.00
$ 421.00 - $ 421.00
$ 421.00
$ 338.00
$ 338.00 - $ 338.00
$ 338.00
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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 %
$ 314.00
$ 314.00 - $ 314.00
$ 314.00
$ 252.00
$ 252.00 - $ 252.00
$ 252.00

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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$ 314.00
$ 314.00 - $ 314.00
$ 314.00
$ 252.00
$ 252.00 - $ 252.00
$ 252.00
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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
$ 159.00
$ 159.00 - $ 159.00
$ 159.00

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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$ 199.00
$ 199.00 - $ 199.00
$ 199.00
$ 159.00
$ 159.00 - $ 159.00
$ 159.00
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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 %
$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00

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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$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00
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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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$ 257.00
$ 257.00 - $ 257.00
$ 257.00
$ 205.00
$ 205.00 - $ 205.00
$ 205.00

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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$ 257.00
$ 257.00 - $ 257.00
$ 257.00
$ 205.00
$ 205.00 - $ 205.00
$ 205.00
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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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$ 250.00
$ 250.00 - $ 250.00
$ 250.00
$ 200.00
$ 200.00 - $ 200.00
$ 200.00

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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$ 250.00
$ 250.00 - $ 250.00
$ 250.00
$ 200.00
$ 200.00 - $ 200.00
$ 200.00
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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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$ 254.00
$ 254.00 - $ 254.00
$ 254.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00

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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$ 254.00
$ 254.00 - $ 254.00
$ 254.00
$ 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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$ 440.00
$ 440.00 - $ 440.00
$ 440.00
$ 352.00
$ 352.00 - $ 352.00
$ 352.00

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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$ 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
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$ 499.00
$ 499.00 - $ 499.00
$ 499.00
$ 400.00
$ 400.00 - $ 400.00
$ 400.00

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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$ 499.00
$ 499.00 - $ 499.00
$ 499.00
$ 400.00
$ 400.00 - $ 400.00
$ 400.00
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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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$ 490.00
$ 490.00 - $ 490.00
$ 490.00
$ 393.00
$ 393.00 - $ 393.00
$ 393.00

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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$ 490.00
$ 490.00 - $ 490.00
$ 490.00
$ 393.00
$ 393.00 - $ 393.00
$ 393.00
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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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$ 493.00
$ 493.00 - $ 493.00
$ 493.00
$ 395.00
$ 395.00 - $ 395.00
$ 395.00

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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$ 493.00
$ 493.00 - $ 493.00
$ 493.00
$ 395.00
$ 395.00 - $ 395.00
$ 395.00
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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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$ 431.00
$ 431.00 - $ 431.00
$ 431.00
$ 345.00
$ 345.00 - $ 345.00
$ 345.00

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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$ 431.00
$ 431.00 - $ 431.00
$ 431.00
$ 345.00
$ 345.00 - $ 345.00
$ 345.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 195.00
$ 195.00 - $ 195.00
$ 195.00
$ 157.00
$ 157.00 - $ 157.00
$ 157.00

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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$ 195.00
$ 195.00 - $ 195.00
$ 195.00
$ 157.00
$ 157.00 - $ 157.00
$ 157.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 238.00
$ 238.00 - $ 238.00
$ 238.00
$ 192.00
$ 192.00 - $ 192.00
$ 192.00

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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$ 238.00
$ 238.00 - $ 238.00
$ 238.00
$ 192.00
$ 192.00 - $ 192.00
$ 192.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 316.00
$ 316.00 - $ 316.00
$ 316.00
$ 254.00
$ 254.00 - $ 254.00
$ 254.00

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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$ 316.00
$ 316.00 - $ 316.00
$ 316.00
$ 254.00
$ 254.00 - $ 254.00
$ 254.00
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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$ 292.00
$ 292.00 - $ 292.00
$ 292.00
$ 233.00
$ 233.00 - $ 233.00
$ 233.00

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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$ 292.00
$ 292.00 - $ 292.00
$ 292.00
$ 233.00
$ 233.00 - $ 233.00
$ 233.00
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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 243.00
$ 243.00 - $ 243.00
$ 243.00

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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 243.00
$ 243.00 - $ 243.00
$ 243.00
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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 245.00
$ 245.00 - $ 245.00
$ 245.00

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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 245.00
$ 245.00 - $ 245.00
$ 245.00
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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$ 226.00
$ 226.00 - $ 226.00
$ 226.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00

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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$ 226.00
$ 226.00 - $ 226.00
$ 226.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00
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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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$ 173.00
$ 173.00 - $ 173.00
$ 173.00
$ 138.00
$ 138.00 - $ 138.00
$ 138.00

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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$ 173.00
$ 173.00 - $ 173.00
$ 173.00
$ 138.00
$ 138.00 - $ 138.00
$ 138.00
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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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$ 207.00
$ 207.00 - $ 207.00
$ 207.00
$ 166.00
$ 166.00 - $ 166.00
$ 166.00

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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$ 207.00
$ 207.00 - $ 207.00
$ 207.00
$ 166.00
$ 166.00 - $ 166.00
$ 166.00
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 %
$ 493.00
$ 493.00 - $ 493.00
$ 493.00
$ 395.00
$ 395.00 - $ 395.00
$ 395.00

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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$ 493.00
$ 493.00 - $ 493.00
$ 493.00
$ 395.00
$ 395.00 - $ 395.00
$ 395.00
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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$ 442.00
$ 442.00 - $ 442.00
$ 442.00
$ 354.00
$ 354.00 - $ 354.00
$ 354.00

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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$ 442.00
$ 442.00 - $ 442.00
$ 442.00
$ 354.00
$ 354.00 - $ 354.00
$ 354.00
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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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$ 147.00
$ 147.00 - $ 147.00
$ 147.00
$ 118.00
$ 118.00 - $ 118.00
$ 118.00

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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$ 147.00
$ 147.00 - $ 147.00
$ 147.00
$ 118.00
$ 118.00 - $ 118.00
$ 118.00
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