Home / Shop / Fuelab 565 TBI Adjustable FPR 10-25 PSI (2) -10AN In (1) -10AN Return Max Flow Bypass - Black

Fuelab 565 TBI Adjustable FPR 10-25 PSI (2) -10AN In (1) -10AN Return Max Flow Bypass - Black

SKU: FLB56503-1

Fuel Pressure Regulators

FLB 565 High Flow FPR...

Fuelab

Fuelab 565 TBI Adjustable FPR 10-25 PSI (2) -10AN In (1) -10AN Return Max Flow Bypass - Black

SKU: FLB56503-1

Fuel Pressure Regulators

FLB 565 High Flow FPR...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

FUELAB 565 Series fuel pressure regulators deliver performance and flexibility with extreme capacity. These high-flow regulators utilize massive 1/2 in. return orifices and -10 AN ports, with bypass capabilities over 5 gpm at 5 psi, to handle carbureted applications well over 1800 hp—plus EFI applications using belt-driven fuel pumps. FUELAB 565 Series fuel pressure regulators come in four different pressure ranges covering applications between 4 and 80 psi.

Application Summary

Universal

Part Type

Fuel Injection Pressure Regulator O-Ring

Data: v4.2 - Upd: 2026-10-13 23:19:53

Specifications

Product Attributes - Brand: FUELAB
Product Attributes - Manufacturer's Part Number: 56503-1
Product Attributes - Part Type: Fuel Pressure Regulators
Product Attributes - Product Line: FUELAB 565 Series Fuel Pressure Regulators
Product Attributes - UPC: 845096001926
Product Attributes - Regulator Pressure (psi): 10-25
Product Attributes - Regulator Style: Return
Product Attributes - Regulator Location: Inline
Product Attributes - Boost/Vacuum Reference Port: Yes
Product Attributes - Boost/Vacuum Rise Ratio: 1:1
Product Attributes - Gauge Port: Yes
Product Attributes - Inlet Quantity: 1
Product Attributes - Regulator Inlet Size: -10 AN
Product Attributes - Inlet Attachment: Female straight cut O-ring
Product Attributes - Outlet Quantity: 1
Product Attributes - Regulator Outlet Size: -10 AN
Product Attributes - Outlet Attachment: Female straight cut O-ring
Product Attributes - Return Fitting Size: -10 AN
Product Attributes - Return Attachment: Female straight cut O-ring
Product Attributes - Fittings Included: No
Product Attributes - Regulator Material: Aluminum
Product Attributes - Regulator Color: Black
Product Attributes - Rebuildable: Yes
Product Attributes - Mounting Bracket Included: Yes
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Regulator body has 1/8 in. NPT regulated pressure port.

Reference Information

Brand Name/s	Fuelab
StreetFX SKU	flb56503-1
SFX Item ID	4221550
Supplier Item Code	4221550
Manufacturer SKU	56503-1
Manufacturer UPC	845096001926
Alternative References	FUE-56503-1, -10AN