How to Remove and Install a Fuel Pressure Regulator in Subaru Legacy?

Disconnect the cable from the negative battery terminal to relieve fuel system pressure. For 2000-2004 models, remove the air intake duct, disconnect the vacuum hose and fuel hose from the fuel pressure regulator, remove the regulator mounting screws and old O-ring. Install a new O-ring, lightly coated with clean engine oil, and check for leaks. For 2005 models, disconnect the vacuum hose, fuel hoses, and remove the bolt attaching the regulator mounting bracket to the intake manifold.

Genuine Subaru Legacy Fuel Pressure Regulator

Fuel Tank Pressure Regulator

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13 Fuel Pressure Regulators found

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Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA400
$98.38 MSRP: $136.63
You Save: $38.25 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2007-2009 Subaru Legacy | GT, GT Limited, XT Limited | 2.5L H4 Turbo
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Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA240
$114.14 MSRP: $158.53
You Save: $44.39 (28%)
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Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2004 Subaru Legacy | Baja, Baja-S, Base, Brighton, Cold Weather, GT, L, Limited, L-S, Post, SUS Limited | 2.2L H4 Series, 2.5L H4
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Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA351
$123.80 MSRP: $171.95
You Save: $48.15 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004 Subaru Legacy | Baja-B | 2.5L H4 Turbo
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Subaru Legacy Fuel Injection Pressure Regulator
Part Number: 22670AA281
$90.68 MSRP: $125.95
You Save: $35.27 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator Assembly-Pressure; Fuel Pressure Regulator
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2005 Subaru Legacy | 2.5i, 2.5i Limited, Base, Cold Weather, GT, L, Limited, L-S, SUS Limited | 2.5L H4
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Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA221
$114.14 MSRP: $158.53
You Save: $44.39 (28%)
ADD TO CART
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2004 Subaru Legacy | Base, Brighton, Cold Weather, Flat6, Flat6 L.L.Bean, Flat6-S, GT, L, Limited, Post, SUS Flat6 | 2.2L H4 Series, 2.5L H4, 3.0L H6
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Subaru Legacy Fuel Injection Pressure Regulator
Part Number: 16622AA010
$456.57 MSRP: $651.50
You Save: $194.93 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator And Damper Assy Front ; Regulator And Damper Assembly-Fuel; Fuel Pressure Regulator
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2007 Subaru Legacy | 3.0R, 3.0R Limited, 3.0R LL-Bean | 3.0L H6
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Subaru Legacy Fuel Injection Pressure Regulator
Part Number: 22670AA381
$123.43 MSRP: $171.43
You Save: $48.00 (28%)
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Product Specifications
- Other Name: Regulator Assembly-Pressure; Fuel Pressure Regulator
- Replaces: 22670AA380
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2006 Subaru Legacy | GT, GT Limited | 2.5L H4 Turbo
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Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA470
$73.97 MSRP: $102.73
You Save: $28.76 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2012 Subaru Legacy | 2.5GT Limited, 2.5GT Premium | 2.5L H4 Turbo
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Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA380
$123.43 MSRP: $171.43
You Save: $48.00 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Replaced by: 22670AA381
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Legacy | GT, GT Limited | 2.5L H4 Turbo
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Subaru Legacy Fuel Pressure Regulator
Part Number: 16622AA030
$421.25 MSRP: $601.10
You Save: $179.85 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator And Damper Assy Front ; Regulator And Damper Assembly-Fuel
- Replaced by: 16622AA031
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Legacy | GT, GT Limited | 2.5L H4 Turbo
View related parts
Subaru Legacy Fuel Injection Pressure Regulator
Part Number: 16622AA031
$421.25 MSRP: $601.10
You Save: $179.85 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator And Damper Assy Front ; Regulator And Damper Assembly-Fuel
- Replaces: 16622AA030
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2006 Subaru Legacy | GT, GT Limited | 2.5L H4 Turbo
View related parts
Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA390
$90.68 MSRP: $125.95
You Save: $35.27 (28%)
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Legacy | 2.5i, 2.5i Limited | 2.5L H4
View related parts
Subaru Legacy Fuel Pressure Regulator
Part Number: 22670AA050
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1990-1999 Subaru Legacy | Base, Brighton, GT, L, LS, LS-D, LS-I, Out Back, Post, SUS, Turbo | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4

Subaru Legacy Fuel Pressure Regulator

The Fuel Pressure Regulator in Subaru Legacy vehicles helps in the control of fuel pressure within the electronic fuel injection system. It is usually screw fitted on the fuel rail and functions through a spring and a diaphragm system to manage the amount of fuel to be supplied to the engine depending on the vacuum. When the engine is at rest, the vacuum system permits excess fuel to be pumped back to the tank; however, when the engine requires additional power, vacuum pressure is reduced to prevent the flow of fuel in excess of what the engine needs. While in use, Subaru Legacy models have incorporated various types of fuel pressure regulators: pressure reducing and back-pressure regulators inclusive. The primary distinction lies in their operational design: Pressure reducing regulator relieve input pressure while back-pressure regulators maintain a definite inlet pressure. Larger injectors or high volume pumps might require the use of adjustable OEM regulators to achieve the best results. These adjustable regulators can step up fuel pressure for the perfect air/fuel mix, as well as accommodate many different fuel delivery systems.

Our website stands as the go-to online destination for OEM Subaru Legacy Fuel Pressure Regulator. With complete lines of genuine Subaru Legacy Fuel Pressure Regulator available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.

Subaru Legacy Fuel Pressure Regulator Parts Questions & Experts Answers

Fuel Injection Pressure Regulator
16622AA010
Q: How to Remove and Install a Fuel Pressure Regulator in Subaru Legacy?
A: Disconnect the cable from the negative battery terminal to relieve fuel system pressure. For 2000-2004 models, remove the air intake duct, disconnect the vacuum hose and fuel hose from the fuel pressure regulator, remove the regulator mounting screws and old O-ring. Install a new O-ring, lightly coated with clean engine oil, and check for leaks. For 2005 models, disconnect the vacuum hose, fuel hoses, and remove the bolt attaching the regulator mounting bracket to the intake manifold.