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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 %
$ 1,100.00
$ 1,100.00 - $ 1,100.00
$ 1,100.00
$ 880.00
$ 880.00 - $ 880.00
$ 880.00

Foster K8S-101, 1" ISO-B Hydraulic Plug x 1" 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 K8S-101 is a steel 1" plug in the FHK Ser...

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$ 1,100.00
$ 1,100.00 - $ 1,100.00
$ 1,100.00
$ 880.00
$ 880.00 - $ 880.00
$ 880.00
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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 %
$ 3,456.00
$ 3,456.00 - $ 3,456.00
$ 3,456.00
$ 2,766.00
$ 2,766.00 - $ 2,766.00
$ 2,766.00

Foster K8S/S-103, 1" ISO-B Hydraulic Plug x 1" 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 K8S/S-103 is a 303 stainless 1" plug in t...

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$ 3,456.00
$ 3,456.00 - $ 3,456.00
$ 3,456.00
$ 2,766.00
$ 2,766.00 - $ 2,766.00
$ 2,766.00
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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 %
$ 3,521.00
$ 3,521.00 - $ 3,521.00
$ 3,521.00
$ 2,817.00
$ 2,817.00 - $ 2,817.00
$ 2,817.00

Foster K8S/S-101, 1" ISO-B Hydraulic Plug x 1" 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 K8S/S-101 is a 303 stainless 1" plug in t...

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$ 3,521.00
$ 3,521.00 - $ 3,521.00
$ 3,521.00
$ 2,817.00
$ 2,817.00 - $ 2,817.00
$ 2,817.00
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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 %
$ 3,292.00
$ 3,292.00 - $ 3,292.00
$ 3,292.00
$ 2,634.00
$ 2,634.00 - $ 2,634.00
$ 2,634.00

Foster K8S/S, 1" ISO-B Hydraulic Plug x 1" 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 K8S/S is a 303 stainless 1" plug in the F...

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$ 3,292.00
$ 3,292.00 - $ 3,292.00
$ 3,292.00
$ 2,634.00
$ 2,634.00 - $ 2,634.00
$ 2,634.00
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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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$ 872.00
$ 872.00 - $ 872.00
$ 872.00
$ 697.00
$ 697.00 - $ 697.00
$ 697.00

Foster K8S, 1" ISO-B Hydraulic Plug x 1" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K8S is a steel 1" plug in the FHK Series,...

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$ 872.00
$ 872.00 - $ 872.00
$ 872.00
$ 697.00
$ 697.00 - $ 697.00
$ 697.00
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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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$ 1,421.00
$ 1,421.00 - $ 1,421.00
$ 1,421.00
$ 1,136.00
$ 1,136.00 - $ 1,136.00
$ 1,136.00

Foster K8B-103, 1" ISO-B Hydraulic Plug x 1" 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 K8B-103 is a brass 1" plug in the FHK Ser...

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$ 1,421.00
$ 1,421.00 - $ 1,421.00
$ 1,421.00
$ 1,136.00
$ 1,136.00 - $ 1,136.00
$ 1,136.00
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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$ 1,442.00
$ 1,442.00 - $ 1,442.00
$ 1,442.00
$ 1,153.00
$ 1,153.00 - $ 1,153.00
$ 1,153.00

Foster K8B-101, 1" ISO-B Hydraulic Plug x 1" 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 K8B-101 is a brass 1" plug in the FHK Ser...

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$ 1,442.00
$ 1,442.00 - $ 1,442.00
$ 1,442.00
$ 1,153.00
$ 1,153.00 - $ 1,153.00
$ 1,153.00
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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$ 1,150.00
$ 1,150.00 - $ 1,150.00
$ 1,150.00
$ 919.00
$ 919.00 - $ 919.00
$ 919.00

Foster K8B, 1" ISO-B Hydraulic Plug x 1" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K8B is a brass 1" plug in the FHK Series,...

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$ 1,150.00
$ 1,150.00 - $ 1,150.00
$ 1,150.00
$ 919.00
$ 919.00 - $ 919.00
$ 919.00
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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$ 594.00
$ 594.00 - $ 594.00
$ 594.00
$ 476.00
$ 476.00 - $ 476.00
$ 476.00

Foster K6SLV, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6SLV is a steel 3/4" plug in the FHK Ser...

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$ 594.00
$ 594.00 - $ 594.00
$ 594.00
$ 476.00
$ 476.00 - $ 476.00
$ 476.00
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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$ 740.00
$ 740.00 - $ 740.00
$ 740.00
$ 592.00
$ 592.00 - $ 592.00
$ 592.00

Foster K6S12, 3/4" ISO-B Hydraulic Plug x 1-1/16"-12 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K6S12 is a steel 3/4" plug in the FHK Ser...

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$ 740.00
$ 740.00 - $ 740.00
$ 740.00
$ 592.00
$ 592.00 - $ 592.00
$ 592.00
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 %
$ 711.00
$ 711.00 - $ 711.00
$ 711.00
$ 569.00
$ 569.00 - $ 569.00
$ 569.00

Foster K6S-103, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6S-103 is a steel 3/4" plug in the FHK S...

View full details
$ 711.00
$ 711.00 - $ 711.00
$ 711.00
$ 569.00
$ 569.00 - $ 569.00
$ 569.00
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 %
$ 710.00
$ 710.00 - $ 710.00
$ 710.00
$ 569.00
$ 569.00 - $ 569.00
$ 569.00

Foster K6S-102, 3/4" ISO-B Hydraulic Plug x 3/4" Female NPT, ISO-B Series, Neoprene Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K6S-102 is a steel 3/4" plug in the FHK S...

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$ 710.00
$ 710.00 - $ 710.00
$ 710.00
$ 569.00
$ 569.00 - $ 569.00
$ 569.00
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 %
$ 724.00
$ 724.00 - $ 724.00
$ 724.00
$ 579.00
$ 579.00 - $ 579.00
$ 579.00

Foster K6S-101, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6S-101 is a steel 3/4" plug in the FHK S...

View full details
$ 724.00
$ 724.00 - $ 724.00
$ 724.00
$ 579.00
$ 579.00 - $ 579.00
$ 579.00
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 %
$ 1,923.00
$ 1,923.00 - $ 1,923.00
$ 1,923.00
$ 1,537.00
$ 1,537.00 - $ 1,537.00
$ 1,537.00

Foster K6S/SLV, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6S/SLV is a 303 stainless 3/4" plug in t...

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$ 1,923.00
$ 1,923.00 - $ 1,923.00
$ 1,923.00
$ 1,537.00
$ 1,537.00 - $ 1,537.00
$ 1,537.00
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 %
$ 2,049.00
$ 2,049.00 - $ 2,049.00
$ 2,049.00
$ 1,641.00
$ 1,641.00 - $ 1,641.00
$ 1,641.00

Foster K6S/S-103, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6S/S-103 is a 303 stainless 3/4" plug in...

View full details
$ 2,049.00
$ 2,049.00 - $ 2,049.00
$ 2,049.00
$ 1,641.00
$ 1,641.00 - $ 1,641.00
$ 1,641.00
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 %
$ 2,023.00
$ 2,023.00 - $ 2,023.00
$ 2,023.00
$ 1,618.00
$ 1,618.00 - $ 1,618.00
$ 1,618.00

Foster K6S/S-101, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6S/S-101 is a 303 stainless 3/4" plug in...

View full details
$ 2,023.00
$ 2,023.00 - $ 2,023.00
$ 2,023.00
$ 1,618.00
$ 1,618.00 - $ 1,618.00
$ 1,618.00
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 %
$ 1,886.00
$ 1,886.00 - $ 1,886.00
$ 1,886.00
$ 1,509.00
$ 1,509.00 - $ 1,509.00
$ 1,509.00

Foster K6S/S, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6S/S is a 303 stainless 3/4" plug in the...

View full details
$ 1,886.00
$ 1,886.00 - $ 1,886.00
$ 1,886.00
$ 1,509.00
$ 1,509.00 - $ 1,509.00
$ 1,509.00
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 %
$ 659.00
$ 659.00 - $ 659.00
$ 659.00
$ 527.00
$ 527.00 - $ 527.00
$ 527.00

Foster K6S, 3/4" ISO-B Hydraulic Plug x 3/4" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K6S is a steel 3/4" plug in the FHK Serie...

View full details
$ 659.00
$ 659.00 - $ 659.00
$ 659.00
$ 527.00
$ 527.00 - $ 527.00
$ 527.00
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 %
$ 868.00
$ 868.00 - $ 868.00
$ 868.00
$ 694.00
$ 694.00 - $ 694.00
$ 694.00

Foster K6B-103, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6B-103 is a brass 3/4" plug in the FHK S...

View full details
$ 868.00
$ 868.00 - $ 868.00
$ 868.00
$ 694.00
$ 694.00 - $ 694.00
$ 694.00
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 %
$ 917.00
$ 917.00 - $ 917.00
$ 917.00
$ 734.00
$ 734.00 - $ 734.00
$ 734.00

Foster K6B-101, 3/4" ISO-B Hydraulic Plug x 3/4" 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 K6B-101 is a brass 3/4" plug in the FHK S...

View full details
$ 917.00
$ 917.00 - $ 917.00
$ 917.00
$ 734.00
$ 734.00 - $ 734.00
$ 734.00
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 %
$ 713.00
$ 713.00 - $ 713.00
$ 713.00
$ 571.00
$ 571.00 - $ 571.00
$ 571.00

Foster K6B, 3/4" ISO-B Hydraulic Plug x 3/4" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster K6B is a brass 3/4" plug in the FHK Serie...

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$ 713.00
$ 713.00 - $ 713.00
$ 713.00
$ 571.00
$ 571.00 - $ 571.00
$ 571.00
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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$ 379.00
$ 379.00 - $ 379.00
$ 379.00
$ 303.00
$ 303.00 - $ 303.00
$ 303.00

Foster K4SLV, 1/2" ISO-B Hydraulic Plug x 1/2" 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 K4SLV is a steel 1/2" plug in the FHK Ser...

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$ 379.00
$ 379.00 - $ 379.00
$ 379.00
$ 303.00
$ 303.00 - $ 303.00
$ 303.00
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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$ 454.00
$ 454.00 - $ 454.00
$ 454.00
$ 363.00
$ 363.00 - $ 363.00
$ 363.00

Foster K4S-103, 1/2" ISO-B Hydraulic Plug x 1/2" 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 K4S-103 is a steel 1/2" plug in the FHK S...

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$ 454.00
$ 454.00 - $ 454.00
$ 454.00
$ 363.00
$ 363.00 - $ 363.00
$ 363.00
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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$ 472.00
$ 472.00 - $ 472.00
$ 472.00
$ 379.00
$ 379.00 - $ 379.00
$ 379.00

Foster K4S-101, 1/2" ISO-B Hydraulic Plug x 1/2" 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 K4S-101 is a steel 1/2" plug in the FHK S...

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$ 472.00
$ 472.00 - $ 472.00
$ 472.00
$ 379.00
$ 379.00 - $ 379.00
$ 379.00
Save 20% Save %

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