Fuelab 529 Electronic EFI Adjustable FPR (1) -6AN In (1) -6AN Return - Red

SKU: FLB52901-2

Fuel Pressure Regulators

FLB 529 Electronic FPR

Fuelab

Fuelab 529 Electronic EFI Adjustable FPR (1) -6AN In (1) -6AN Return - Red

SKU: FLB52901-2

Fuel Pressure Regulators

FLB 529 Electronic 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 529 Series electronic fuel pressure regulators work directly with the FUELAB Prodigy line of fuel pumps to reduce heat build-up and vapor lock conditions related to street/strip operation. Set the pressure mechanically like a traditional bypass regulator and let their demand-based speed control take care of the rest! These regulators generate a signal to the pump to control the return line flow rate. This feature reduces current draw while at low engine output to prevent fuel overheating--which could lead to system failure.

Additional info:

* Designed for use with FUELAB® Prodigy fuel pumps (41401,41402,41403,42401, and 42402 only)
* Patented method for demand-based flow control; able to detect changes in demand before change in rail pressure is realized
* Automatically reduces current draw at low flow demand
* Additional analog output to track actual fuel system capacity
* Independent system--no other connections, control boxes, or calibration required
* Gasoline, diesel, methanol, and ethanol fuel compatible
* Billet aluminum construction with anodized finish
* Fine thread pitch for precise pressure adjustment
* Versatile mounting bracket and stainless steel hardware
* 1/8 in. NPT gauge port with plug for external pressure gauge
* 1/8 in. NPT pressure reference port with barbed fitting

Application Summary

Universal

Part Type

Fuel Injection Pressure Regulator O-Ring

Data: v4.2 - Upd: 2026-09-29 01:18:09

Specifications

Product Attributes - Brand: FUELAB
Product Attributes - Manufacturer's Part Number: 52901-2
Product Attributes - Part Type: Fuel Pressure Regulators
Product Attributes - Product Line: FUELAB 529 Series Electronic Fuel Pressure Regulators
Product Attributes - UPC: 845096004446
Product Attributes - Regulator Pressure (psi): 25-90
Product Attributes - Regulator Style: Return
Product Attributes - Regulator Location: Fuel rail mount
Product Attributes - Boost/Vacuum Reference Port: Yes
Product Attributes - Gauge Port: Yes
Product Attributes - Inlet Quantity: 1
Product Attributes - Regulator Inlet Size: -6 AN
Product Attributes - Inlet Attachment: Male threads
Product Attributes - Outlet Quantity: 1
Product Attributes - Return Fitting Size: -6 AN
Product Attributes - Return Attachment: Male threads
Product Attributes - Fittings Included: Yes
Product Attributes - Regulator Material: Aluminum
Product Attributes - Regulator Color: Red
Product Attributes - Rebuildable: Yes
Product Attributes - Mounting Bracket Included: Yes
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Fuelab
StreetFX SKU	flb52901-2
SFX Item ID	4221477
Supplier Item Code	4221477
Manufacturer SKU	52901-2
Manufacturer UPC	845096004446
Alternative References	FUE-52901-2, -6AN