1990 Subaru Legacy Fuel and Emissions Systems

Essential 1990 Subaru Legacy Fuel and Emissions Systems

Carquest Premium – Fuel Cap Tester Adapter (Part No.12427)

Fuel Cap Tester Adapter

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$34.99
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:
  • BAR Certified adapters
  • Adapter check’s a fuel cap’s ability to hold pressure.
  • Adapters meet EPA standards for recommended fleet coverage.
  • Check adapter application chart for specific makes and models
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Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

from

$12.49
To perform a complete fuel pump replacement, clean the tank every time. Order the Delphi Fuel Tank Cleaning Kit (Part FC01). Remember, the original pump went into a clean fuel tank, to ensure the same level of performance, the new pump should too. 100 ye

Product Features:
  • Helps avoid premature fuel pump failure
  • Lint free towel included
  • Low suds formulation
  • Removes harmful contaminants from the fuel tank
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Original Equipment – Original Equipment Fuel Injector (Part No.C1000251345OEA)

Original Equipment Fuel Injector

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$123.91
The Original Equipment brand is the same OEM quality and performance of the original equipment it replaces and is supplied in a plain box, with the car manufacturer’s logo on the part. Original Equipment fuel injectors are manufactured to OE requirements that meet federal emissions and fuel economy standards, and provide exact OE fit for ease of installation.

Product Features:
  • Original Equipment Manufacturer
  • Premium internal components
  • OE Calibrated impedance
  • Fine atomized spray reduces emissions
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Carquest Premium – Multi Purpose Relay (Part No.ACA1431)

Multi Purpose Relay

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$61.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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DENSO – First Time Fit Air Mass Sensor (Part No.B3150289033ND)

First Time Fit Air Mass Sensor

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$205.05
Denso manufactures an air mass sensor that is engineered to exact OEM specifications for quality, fit and performance. The Denso Air Mass Sensor provides exceptional reliability by incorporating a platinum coated sensing element with a glass film to protect the sensor from contaminants. Denso prevents errors caused by air pulsations produced in the intake air pipe by integrating the control circuit within the top of the air flow sensor so that only the small bypass passage structure with the sensing element is inserted into the intake air pipe, resulting in higher detection accuracy and performance.

Product Features:
  • OEM Quality Direct fit Application
  • Platinum coated sensing element
  • Meets or exceeds OEM specifications
  • Utilizes the factory style mounts, connectors and fittings
  • Provides exceptional reliability
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Cardone – Mass Air Flow Sensor (Part No.74-50040)

Mass Air Flow Sensor

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$156.99
CARDONE Remanufactured Mass Air Flow Sensors (MAFS) precisely track O.E. output curves and maintain specific tolerances to ensure accurate scan tool readings for proper operation. 100% re-soldering of critical components ensures superior electrical connections, eliminates intermittent failures and lengthens product life. With CARDONE Mass Air Flow Sensors (MAFS), you can expect smooth vehicle performance.

Product Features:
  • 100% re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life.
  • On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements.
  • All modules are 100% tested with automated computer test equipment to ensure full functionality and reliability.
  • Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle’s engine control management system.
  • Components are rated to handle demanding temperature variations for optimum reliability in every environment.
  • As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
  • Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80%.
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Carquest Premium – Multi Purpose Relay (Part No.RAA1251)

Multi Purpose Relay

from

$20.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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ACDelco – Multi-Purpose Wire Connector with Leads (Part No.PT2164)

Multi-Purpose Wire Connector with Leads

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$16.79
ACDelco Professional Air Charge Temperature Sensor Connector is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, starting and charging, body-electrical and lighting, and/or engine fuel management. This premium aftermarket connector is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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Carquest Premium – Locking Fuel Cap: 10504, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10504)

Locking Fuel Cap: 10504, Screw On, Direct Fit, Provides Tight Seal, 1 Pack

from

$21.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Product Features:
  • Protects your fuel from theft and vandalism
  • Passes all state and federal emissions tests
  • Manufactured from durable, long-life materials
  • Reduces air pollution with proper sealing and venting
  • Independently tested for emission control
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Motorad – Tethered Fuel Cap (Part No.MGC837T)

Tethered Fuel Cap

from

$25.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Product Features:
  • Come pre-assembled for quick and easy installation.
  • Several fastener options to work with any fuel cap compartment configuration
  • Fits vehicles orginally equipped with tether
  • Reduces air pollution with proper sealing and venting
  • Manufactured from durable, long-life materials
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Carquest Premium – Fuel Pump Module Assembly M2542519: Fuel Pump, Sending Unit and Strainer (Part No.M2542519)

Fuel Pump Module Assembly M2542519: Fuel Pump, Sending Unit and Strainer

from

$759.99
Carquest Premium fuel pump modules and assemblies are built to meet or exceed Original Equipment (OE) specifications for fit, form and function. We have invested in industry-leading quality improvements like upgraded turbine impellers and 100% carbon commutators to deliver greater reliability. Carquest Premium fuel pump modules are supplied with the pump strainer and gaskets or seals when required for the application. Carquest Premium fuel pump modules are engineered with superior quality components to provide the longest life and reliable performance.

Product Features:
  • Meets or exceeds OE specifications for fit, form and function
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
  • Includes installation gaskets or seals where applicable
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Carquest Premium – Electric Fuel Pump (Part No.E8804)

Electric Fuel Pump

from

$96.99


Product Features:
  • All CARQUEST fuel pumps are designed to meet or exceed OE specs and are 100% tested to ensure performance and long-life.
  • High-efficiency turbine technology provides quiet and precise fuel delivery
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Victor Reinz – Fuel Injection Plenum Gasket Set (Part No.15-10862-01)

Fuel Injection Plenum Gasket Set

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$52.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
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Ishino Stone – Idle Control Valve Gasket (Part No.C4063393728ISH)

Idle Control Valve Gasket

from

$6.56
Ishino Stone is an industry leading gasket manufacturer, providing you original equipment design and quality and world class aftermarket service.

Product Features:
  • Original equipment design and quality
  • Utilizes OE equivalent or better materials
  • Meets or exceeds OEM specifications
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Carquest Premium – Fuel Pump Strainer FS2521172 (Part No.FS2521172)

Fuel Pump Strainer FS2521172

from

$30.99
CARQUEST Premium electric fuel pumps are built to meet or exceed Original Equipment (OE) specifications for fit, form and function. Our CARQUEST Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. CARQUEST Premium electric fuel pumps are engineered with superior quality components to provide the longest life and reliable performance.

Product Features:
  • Meets or exceeds OE specifications for fit, form and function
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
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DENSO – Original Equipment Quality Fuel Pump Strainer (Part No.952-0051)

Original Equipment Quality Fuel Pump Strainer

from

$24.99
As the innovator and leader in fuel supply technology, DENSO has conducted superior testing and inspection processes to insure the highest quality fuel supply product. Don’t be fooled by imitations – look for the DENSO name to be sure you’re getting the b

Product Features:
  • First Time Fit
  • Built to DENSO Original Equipment Standards
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NTK – Switching Oxygen Sensor: 4 Wire, 27.5" Long, Heated, Direct Fit (Part No.24642)

Switching Oxygen Sensor: 4 Wire, 27.5" Long, Heated, Direct Fit

from

$111.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:
  • OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
  • PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
  • OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
  • EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
  • EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
  • ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
  • NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
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DENSO – First Time Fit Oxygen Sensor (Part No.C5010100869ND)

First Time Fit Oxygen Sensor

from

$108.50
Denso First Time Fit oxygen sensors are constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each DENSO sensor.

Product Features:
  • SUPERIOR DESIGN – Maximizes engine performance and fuel efficiency while reducing harmful emissions.
  • DOUBLE-PROTECTION COVER – Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
  • ALUMINUM-OXIDE TRAP LAYER – Keeps silicone and lead outside the ceramic element through DENSO’s exclusive design, preventing damage to the platinum electrode.
  • STAINLESS STEEL HOUSING – Resists corrosion and contamination with a rugged, watertight body.
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DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 16.34" Long, Heated, Exact Fit (Part No.234-9136)

Wideband Oxygen Sensor: Upstream, 4 Wire, 16.34" Long, Heated, Exact Fit

from

$233.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision-built for exact replacement and a first time fit. DENSO gives you the right part and the right fit the first t

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
  • Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
  • Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
  • Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
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NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 9.5" Long, Heated, Direct Fit (Part No.24663)

Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 9.5" Long, Heated, Direct Fit

from

$229.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:
  • OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
  • PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
  • OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
  • EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
  • EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
  • ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
  • NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
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Original Equipment – EGR Tube Gasket (Part No.B7018946152OEA)

EGR Tube Gasket

from

$2.59
EGR Tube Gasket

Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.71218)

Exhaust Gas Recirculation (EGR) Valve Gasket

from

$3.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered for the sealing repair environment
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
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Delphi – Fuel Injection Pressure Regulator (Part No.FP10415)

Fuel Injection Pressure Regulator

from

$147.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • Precisely manufactured internal valves, diaphragms and springs means excellent performance under all engine operating conditions
  • Quiet operation, no audible regulator noise
  • Robust diaphragm materials means longer life, improved durability and compatibility with a wide range of fuels
  • Consistent and predictable fuel pressure throughout system range of control provides great drivability
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Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1530)

Fuel Injection Pressure Regulator

from

$372.99
WVE is a leading source of advanced vehicle electronics components for replacement applications in the automotive aftermarket and original equipment applications. WVE offers high-technology manufacturing along with innovative solutions and improvements to
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Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1321)

Fuel Injection Pressure Regulator

from

$134.99
WVE is a leading source of advanced vehicle electronics components for replacement applications in the automotive aftermarket and original equipment applications. WVE offers high-technology manufacturing along with innovative solutions and improvements to
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Ishino Stone – Fuel Injector O Ring (Part No.C1012251371ISH)

Fuel Injector O Ring

from

$4.63
Fuel Injector O Ring

Carquest – Fuel Injector Seal Kit (Part No.274785)

Fuel Injector Seal Kit

from

$10.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • State-of-the-art designs that meet or exceed OE specifications
  • Top-of-the-line quality and performance
  • With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
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Carquest – Fuel Injector Seal Kit (Part No.274751)

Fuel Injector Seal Kit

from

$15.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • State-of-the-art designs that meet or exceed OE specifications
  • Top-of-the-line quality and performance
  • With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
  • BWD is a global manufacturer of original equipment and aftermarket fuel injection products, complete quality control is maintained through the manufacturing process from componentry to finished product
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1990 Subaru Legacy Fuel and Emissions Systems

You count on your 1990 Subaru Legacy to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Fuel and Emissions Systems. With 52 Fuel and Emissions Systems ranging in price from $6.29 to $406.53, you’re sure to find everything you need for your 1990 Subaru Legacy.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 16 different brands like Carquest Premium, Delphi, and Bosch. 1990 Subaru Legacy Fuel and Emissions Systems start as low as $6.29!

One of the best ways to find top quality OEM or aftermarket Fuel and Emissions Systems is by asking professionals. Short of that, you can shop with confidence thanks to our 1,290 extensive product reviews on 1990 Subaru Legacy Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are Locking Fuel Cap with 4.3 stars and Locking Fuel Cap: 10501, Screw On, Direct Fit, Provides Tight Seal, 1 Pack with 4.6 stars.

Did we mention you can order your Fuel and Emissions Systems from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Fuel and Emissions Systems inventory for your 1990 Subaru Legacy below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 1990 Subaru Legacy

Trusted Fuel and Emissions Systems OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1990 Subaru Legacy running right for years to come. In our inventory you’ll find brands like Carquest Premium, Delphi, Bosch, and even more.

Popular DENSO Fuel and Emissions Systems

You’ll find popular DENSO brand products across Fuel Pumps and Oxygen Sensors. All are waiting to get your 1990 Subaru Legacy back on the road. Some of the top-rated DENSO products in these categories are:
Original Equipment Quality Electric Fuel Pump
from $123.99
(1)
Original Equipment Quality Electric Fuel Pump
Fuel Pumps
First Time Fit Oxygen Sensor
from $108.50
(1)
First Time Fit Oxygen Sensor
Oxygen Sensors

Top-Rated Carquest Premium Fuel and Emissions Systems


If Carquest Premium are what you’re looking for, our inventory holds plenty. We stock Carquest Premium brand Fuel and Emissions Systems for your 1990 Subaru Legacy, and some of our most reviewed Carquest Premium parts include:

FAQs for 1990 Subaru Legacy Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 1990 Subaru Legacy?

Out of 52 Fuel and Emissions Systems for the 1990 Subaru Legacy, the most popular in our inventory are:
Fuel Pump
from $55.99
(4)
Fuel Pump
Fuel Pumps
Fuel Tank Cleaning Kit
from $12.49
This product is not rated
Fuel Tank Cleaning Kit
Fuel Tank Cleaning Kits

What are the top-rated 1990 Subaru Legacy Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 1990 Subaru Legacy based on customer reviews/ratings are:
Locking Fuel Cap
from $23.99
(35)
Locking Fuel Cap
“Had a check engine light and when I scanned it, calls for a new gas cap. Instead of buying oem from the dealer or just an ordinary gas cap from a part”
Locking Fuel Cap: 10501, Screw On, Direct Fit, Provides Tight Seal, 1 Pack
from $24.99
(32)
Locking Fuel Cap: 10501, Screw On, Direct Fit, Provides Tight Seal, 1 Pack
“Lost old gas cap and replaced with this one, which comes with a lock (which you don’t have to use,FYI)”