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

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.

Filters

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 2,170.00
$ 2,170.00 - $ 2,170.00
$ 2,170.00
$ 1,737.00
$ 1,737.00 - $ 1,737.00
$ 1,737.00

Foster H6B-103, 3/4" ISO-B Hydraulic Coupler 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 H6B-103 is a brass 3/4" coupler in the FH...

View full details
$ 2,170.00
$ 2,170.00 - $ 2,170.00
$ 2,170.00
$ 1,737.00
$ 1,737.00 - $ 1,737.00
$ 1,737.00
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 %
$ 2,312.00
$ 2,312.00 - $ 2,312.00
$ 2,312.00
$ 1,850.00
$ 1,850.00 - $ 1,850.00
$ 1,850.00

Foster H6B-101, 3/4" ISO-B Hydraulic Coupler 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 H6B-101 is a brass 3/4" coupler in the FH...

View full details
$ 2,312.00
$ 2,312.00 - $ 2,312.00
$ 2,312.00
$ 1,850.00
$ 1,850.00 - $ 1,850.00
$ 1,850.00
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 %
$ 1,986.00
$ 1,986.00 - $ 1,986.00
$ 1,986.00
$ 1,589.00
$ 1,589.00 - $ 1,589.00
$ 1,589.00

Foster H6B, 3/4" ISO-B Hydraulic Coupler 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 H6B is a brass 3/4" coupler in the FHK Se...

View full details
$ 1,986.00
$ 1,986.00 - $ 1,986.00
$ 1,986.00
$ 1,589.00
$ 1,589.00 - $ 1,589.00
$ 1,589.00
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 %
$ 990.00
$ 990.00 - $ 990.00
$ 990.00
$ 792.00
$ 792.00 - $ 792.00
$ 792.00

Foster H4S-103, 1/2" ISO-B Hydraulic Coupler 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 H4S-103 is a steel 1/2" coupler in the FH...

View full details
$ 990.00
$ 990.00 - $ 990.00
$ 990.00
$ 792.00
$ 792.00 - $ 792.00
$ 792.00
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 %
$ 1,025.00
$ 1,025.00 - $ 1,025.00
$ 1,025.00
$ 820.00
$ 820.00 - $ 820.00
$ 820.00

Foster H4S-101, 1/2" ISO-B Hydraulic Coupler 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 H4S-101 is a steel 1/2" coupler in the FH...

View full details
$ 1,025.00
$ 1,025.00 - $ 1,025.00
$ 1,025.00
$ 820.00
$ 820.00 - $ 820.00
$ 820.00
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 %
$ 1,092.00
$ 1,092.00 - $ 1,092.00
$ 1,092.00
$ 873.00
$ 873.00 - $ 873.00
$ 873.00

Foster H4S10, 1/2" ISO-B Hydraulic Coupler x 7/8"-14 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S10 is a steel 1/2" coupler in the FHK ...

View full details
$ 1,092.00
$ 1,092.00 - $ 1,092.00
$ 1,092.00
$ 873.00
$ 873.00 - $ 873.00
$ 873.00
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 %
$ 2,944.00
$ 2,944.00 - $ 2,944.00
$ 2,944.00
$ 2,356.00
$ 2,356.00 - $ 2,356.00
$ 2,356.00

Foster H4S/S-103, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4S/S-103 is a 303 stainless 1/2" coupler...

View full details
$ 2,944.00
$ 2,944.00 - $ 2,944.00
$ 2,944.00
$ 2,356.00
$ 2,356.00 - $ 2,356.00
$ 2,356.00
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 %
$ 2,903.00
$ 2,903.00 - $ 2,903.00
$ 2,903.00
$ 2,322.00
$ 2,322.00 - $ 2,322.00
$ 2,322.00

Foster H4S/S-101, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4S/S-101 is a 303 stainless 1/2" coupler...

View full details
$ 2,903.00
$ 2,903.00 - $ 2,903.00
$ 2,903.00
$ 2,322.00
$ 2,322.00 - $ 2,322.00
$ 2,322.00
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 %
$ 2,801.00
$ 2,801.00 - $ 2,801.00
$ 2,801.00
$ 2,241.00
$ 2,241.00 - $ 2,241.00
$ 2,241.00

Foster H4S/S, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4S/S is a 303 stainless 1/2" coupler in ...

View full details
$ 2,801.00
$ 2,801.00 - $ 2,801.00
$ 2,801.00
$ 2,241.00
$ 2,241.00 - $ 2,241.00
$ 2,241.00
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 %
$ 884.00
$ 884.00 - $ 884.00
$ 884.00
$ 707.00
$ 707.00 - $ 707.00
$ 707.00

Foster H4S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4S is a steel 1/2" coupler in the FHK Se...

View full details
$ 884.00
$ 884.00 - $ 884.00
$ 884.00
$ 707.00
$ 707.00 - $ 707.00
$ 707.00
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 %
$ 1,278.00
$ 1,278.00 - $ 1,278.00
$ 1,278.00
$ 1,023.00
$ 1,023.00 - $ 1,023.00
$ 1,023.00

Foster H4B-103, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4B-103 is a brass 1/2" coupler in the FH...

View full details
$ 1,278.00
$ 1,278.00 - $ 1,278.00
$ 1,278.00
$ 1,023.00
$ 1,023.00 - $ 1,023.00
$ 1,023.00
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 %
$ 1,264.00
$ 1,264.00 - $ 1,264.00
$ 1,264.00
$ 1,011.00
$ 1,011.00 - $ 1,011.00
$ 1,011.00

Foster H4B-102, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4B-102 is a brass 1/2" coupler in the FH...

View full details
$ 1,264.00
$ 1,264.00 - $ 1,264.00
$ 1,264.00
$ 1,011.00
$ 1,011.00 - $ 1,011.00
$ 1,011.00
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 %
$ 1,347.00
$ 1,347.00 - $ 1,347.00
$ 1,347.00
$ 1,078.00
$ 1,078.00 - $ 1,078.00
$ 1,078.00

Foster H4B-101, 1/2" ISO-B Hydraulic Coupler x 1/2" 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 H4B-101 is a brass 1/2" coupler in the FH...

View full details
$ 1,347.00
$ 1,347.00 - $ 1,347.00
$ 1,347.00
$ 1,078.00
$ 1,078.00 - $ 1,078.00
$ 1,078.00
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 %
$ 1,128.00
$ 1,128.00 - $ 1,128.00
$ 1,128.00
$ 901.00
$ 901.00 - $ 901.00
$ 901.00

Foster H4B, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H4B is a brass 1/2" coupler in the FHK Se...

View full details
$ 1,128.00
$ 1,128.00 - $ 1,128.00
$ 1,128.00
$ 901.00
$ 901.00 - $ 901.00
$ 901.00
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 %
$ 794.00
$ 794.00 - $ 794.00
$ 794.00
$ 635.00
$ 635.00 - $ 635.00
$ 635.00

Foster H3S8, 3/8" ISO-B Hydraulic Coupler x 3/4"-16 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H3S8 is a steel 3/8" coupler in the FHK S...

View full details
$ 794.00
$ 794.00 - $ 794.00
$ 794.00
$ 635.00
$ 635.00 - $ 635.00
$ 635.00
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 %
$ 803.00
$ 803.00 - $ 803.00
$ 803.00
$ 643.00
$ 643.00 - $ 643.00
$ 643.00

Foster H3S-104, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-104 is a steel 3/8" coupler in the FH...

View full details
$ 803.00
$ 803.00 - $ 803.00
$ 803.00
$ 643.00
$ 643.00 - $ 643.00
$ 643.00
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 %
$ 767.00
$ 767.00 - $ 767.00
$ 767.00
$ 613.00
$ 613.00 - $ 613.00
$ 613.00

Foster H3S-103, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-103 is a steel 3/8" coupler in the FH...

View full details
$ 767.00
$ 767.00 - $ 767.00
$ 767.00
$ 613.00
$ 613.00 - $ 613.00
$ 613.00
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 %
$ 797.00
$ 797.00 - $ 797.00
$ 797.00
$ 638.00
$ 638.00 - $ 638.00
$ 638.00

Foster H3S-102, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-102 is a steel 3/8" coupler in the FH...

View full details
$ 797.00
$ 797.00 - $ 797.00
$ 797.00
$ 638.00
$ 638.00 - $ 638.00
$ 638.00
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 %
$ 788.00
$ 788.00 - $ 788.00
$ 788.00
$ 631.00
$ 631.00 - $ 631.00
$ 631.00

Foster H3S-101, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S-101 is a steel 3/8" coupler in the FH...

View full details
$ 788.00
$ 788.00 - $ 788.00
$ 788.00
$ 631.00
$ 631.00 - $ 631.00
$ 631.00
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 %
$ 1,688.00
$ 1,688.00 - $ 1,688.00
$ 1,688.00
$ 1,350.00
$ 1,350.00 - $ 1,350.00
$ 1,350.00

Foster H3S/S-101, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S/S-101 is a 303 stainless 3/8" coupler...

View full details
$ 1,688.00
$ 1,688.00 - $ 1,688.00
$ 1,688.00
$ 1,350.00
$ 1,350.00 - $ 1,350.00
$ 1,350.00
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 %
$ 1,592.00
$ 1,592.00 - $ 1,592.00
$ 1,592.00
$ 1,274.00
$ 1,274.00 - $ 1,274.00
$ 1,274.00

Foster H3S/S, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3S/S is a 303 stainless 3/8" coupler in ...

View full details
$ 1,592.00
$ 1,592.00 - $ 1,592.00
$ 1,592.00
$ 1,274.00
$ 1,274.00 - $ 1,274.00
$ 1,274.00
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 %
$ 686.00
$ 686.00 - $ 686.00
$ 686.00
$ 550.00
$ 550.00 - $ 550.00
$ 550.00

Foster H3S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H3S is a steel 3/8" coupler in the FHK Se...

View full details
$ 686.00
$ 686.00 - $ 686.00
$ 686.00
$ 550.00
$ 550.00 - $ 550.00
$ 550.00
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 %
$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 654.00
$ 654.00 - $ 654.00
$ 654.00

Foster H3B-104, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3B-104 is a brass 3/8" coupler in the FH...

View full details
$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 654.00
$ 654.00 - $ 654.00
$ 654.00
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 %
$ 769.00
$ 769.00 - $ 769.00
$ 769.00
$ 615.00
$ 615.00 - $ 615.00
$ 615.00

Foster H3B-103, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 H3B-103 is a brass 3/8" coupler in the FH...

View full details
$ 769.00
$ 769.00 - $ 769.00
$ 769.00
$ 615.00
$ 615.00 - $ 615.00
$ 615.00
Save 20% Save %

Request a Quote

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