1991 Porsche 911 Fuel and Emissions Systems

Essential Fuel and Emissions Systems for 1991 Porsche 911s

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

from

$12.49
When replacing a fuel pump or module, it’s extremely important to clean the tank. Existing dirt, debris, and contamination stuck in the fuel tank can clog the brand-new strainer. Delphi’s Fuel Tank Cleaning Kit (FC01) and Tool (FC02) can help clean your fuel tank in less than five minutes. The FC01 includes a low-suds solution, cloth, and gloves that works together with the FC02 to help clean those hard to reach places without having to remove the fuel tank. Visit our Resource Center for helpful tips and tricks on fuel pumps, technologies, and more: https://www.delphiautoparts.com/usa/en-US/resource-center.

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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Dorman – Secondary A.I.R. Injection Check Valve (Part No.911-982)

Secondary A.I.R. Injection Check Valve

from

$176.99
This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles.
  • Restores functionality – this valve is made to fit and fully restore part functionality after the original valve fails.
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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APA/URO Parts – Fuel Tank Sending Un (Part No.E203030725APA)

Fuel Tank Sending Un

from

$215.54
Fuel Tank Sending Un

Carquest Premium – Multi Purpose Relay (Part No.RAA1337)

Multi Purpose Relay

from

$15.99
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.
See More

Bosch – Port Fuel Injector (Part No.C100013508BOS)

Port Fuel Injector

from

$71.20
Port Fuel Injection (PFI) is the world’s most widely used system for internal combustion engines and offers many advantages for engines with a low pressure output.

Product Features:
  • Low-pressure systems are less complex and more affordable than high-pressure systems
  • Robust combustion process tolerates lower-quality fuel
  • Maintenance-friendly design reduces the overhead for system diagnostics
See More

ACDelco – Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with Seals with 2 O-Rings (Part No.217-3414)

Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with Seals with 2 O-Rings

from

$10.29
The ACDelco Professional Fuel Injector Seal Kit contains high quality aftermarket replacement components for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket kit contains components that are 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
See More

Elring – Fuel Injector O-Ring (Part No.C101262400ELR)

Fuel Injector O-Ring

from

$1.09
Fuel Injector O-Ring

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

Fuel Cap Tester Adapter

from

$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
See More

Carquest Premium – Diesel Glow Plug Connector (Part No.PTA1316)

Diesel Glow Plug Connector

from

$22.99
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.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Bosch – Air Temperature Sensors (Part No.C6000158179BOS)

Air Temperature Sensors

from

$219.45
Air Temperature Sensors measure the temperature of the incoming air to the engine. This information is provided to the Engine Control Module (ECU) to determine the correct amount of fuel needed for optimum performance and economy.

Product Features:
  • Extreme Temperature range: -40F – +260F
  • Robust Design with High Resistance to Engine Vibrations
  • OE or Better – Quality, Performance, and Function
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Rein – OE Quality Automotive Fuel Tank Cap (Part No.E2010129271RIN)

OE Quality Automotive Fuel Tank Cap

from

$17.89
This is an OE quality fuel cap. Rein automotive products provide you with the proper fit, form and function for European vehicles. With fitments for some of the world’s finest automobiles, including Audi, BMW, Mercedes Benz, Mini, Porsche, Saab, Volkswagen, and Volvo all Rein Automotive genuine replacement parts are guaranteed original manufacturer quality. Every part is manufactured with top quality materials to ensure it has the same tolerances as the part that came on the car to provide ease of installation and long lasting durability.

Product Features:
  • Original Equipment fit, form and function
  • Manufactured from high quality materials
  • Right fit the first time
  • O ring is black in color
  • For European vehicles
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Carquest Premium – Fuel Pump Relay (Part No.RAA1892)

Fuel Pump Relay

from

$248.99
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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Carquest Premium – Fuel Pump (Part No.E346189)

Fuel Pump

from

$199.99
Carquest Premium electric fuel pumps are engineered by Carter Fuel Systems or Agility Auto Parts 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
See More

Carquest Premium – Fuel Pump Includes Wiring Harness and Strainer (Part No.E312899)

Fuel Pump Includes Wiring Harness and Strainer

from

$104.99
Carquest Premium electric fuel pumps are engineered by Carter Fuel Systems or Agility Auto Parts 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
See More

Bosch – Check Valve (Part No.E303027620BOS)

Check Valve

from

$29.20
Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket.
See More

Bosch – Check Valve (Part No.E303027424BOS)

Check Valve

from

$37.42
Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket.
See More

Bosch – MAP Sensor (Part No.C704435966BOS)

MAP Sensor

from

$452.57
Bosch Manifold Absolute Pressure (MAP) Sensors provide accurate air pressure measurement to very fine tolerances for efficient engine performance.

Product Features:
  • Extremely sturdy design with a special coating for resistance of harmful chemicals inside the intake manifold.
  • Bosch continually improves its MAP sensor designs with the latest chip technology.
  • Designed to meet or exceed your vehicle’s original equipment specifications (performance, driveability, economy, emissions)
See More

Kayser – Cut Off Valve (Part No.C4086425553KAY)

Cut Off Valve

from

$133.26
Cut Off Valve

Bosch – Bosch Oxygen Sensor (Part No.C501035933BOS)

Bosch Oxygen Sensor

from

$121.56
The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best-in-class performance and maximum service life.

Product Features:
  • OE-Equivalent.
  • Direct fit for easy installation.
  • OE Style connectors and wire lengths.
  • Base ceramic probe of Zirconium and Yttrium.
  • Patented Platinum Power Grid.
See More

Bosch – Oxygen Sensor: 3 Wire, 28.54" Long, Heated, Universal (Part No.15735)

Oxygen Sensor: 3 Wire, 28.54" Long, Heated, Universal

from

$79.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.

Product Features:
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Includes Smart Link Connector, no soldering required
  • No special tools required for installation
  • Seared protection tube due to 100% functional quality test
  • Performance meets or exceeds OE specifications
See More

ACDelco – Multi-Purpose Wire Connector with Leads (Part No.PT2164)

Multi-Purpose Wire Connector with Leads

from

$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
See More

Bosch – Pressure Sensor (Part No.0280101001)

Pressure Sensor

from

$366.99
Bosch OE quality pressure sensors for accurate measurements with high durability, fast response time and wide measuring range

Product Features:
  • Bosch OE quality pressure sensors for accurate measurements
  • Bosch OE quality pressure sensors for long term stability
  • Bosch OE quality pressure sensors with a short response time
  • Bosch OE quality pressure sensors with improved media resistance
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Carquest Premium – Manifold Absolute Pressure Sensor (Part No.ECC2389)

Manifold Absolute Pressure Sensor

from

$569.99
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.
See More

Bosch – MAP Sensor (Part No.C7044559789BOS)

MAP Sensor

from

$69.26
Bosch Manifold Absolute Pressure (MAP) Sensors provide accurate air pressure measurement to very fine tolerances for efficient engine performance.

Product Features:
  • Extremely sturdy design with a special coating for resistance of harmful chemicals inside the intake manifold.
  • Bosch continually improves its MAP sensor designs with the latest chip technology.
  • Designed to meet or exceed your vehicle’s original equipment specifications (performance, driveability, economy, emissions)
See More

Bosch – Fuel Dist Valve Kit (Part No.C20101700156BOS)

Fuel Dist Valve Kit

from

$306.42
Fuel Dist Valve Kit

Upgrade your 1991 Porsche 911 with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 1991 Porsche 911, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Porsche or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your 911 functioning at its best. At Advance Auto Parts, we offer a wide selection of 37 Fuel and Emissions Systems for the 1991 Porsche 911, designed to meet your needs without breaking the bank. From Fuel Pump replacements to Fuel Injectors upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 1991 Porsche 911 at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $1.09 to $452.57, with an average price of $102.61. Our 37 Fuel and Emissions Systems in stock come from 13 trusted brands, so you’re sure to find the right part for your 1991 Porsche 911 without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1991 Porsche 911, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names like Carquest Premium, and more. Carquest Premium Fuel and Emissions Systems start at just $4.29 and boast an impressive 4 stars average rating from customers. With 9 customer reviews and counting, our 1991 Porsche 911 Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 1991 Porsche 911 is always ready to roll. We’re committed to providing you with everything you need to keep your 911 in top shape, all in one place. Start shopping confidently below for your 1991 Porsche 911!

Best-Selling Fuel Pumps for 1991 Porsche 911s

Enhance the driving experience in your Porsche with 6 quality Fuel Pump components, starting at $15.99.

Bosch – Turbine Electric Fuel Pump (Part No.E3000279139BOS)

Turbine Electric Fuel Pump

from

$312.09
Benchmark quality from the worldwide leader in fuel injection technology. Bosch state-of-the-art turbine fuel pumps offer many advantages when compared to older roller-cell and inner-gear pump designs. These pumps offer near silent operation and improved drivability, the core components of this turbine design significantly reduce wear and deliver a longer service life. Bosch Turbine Fuel Pumps are nearly identical in dimension and appearance to the units they replace for a precise fit every time. Plus, application-specific, illustrated step-by-step instructions are included with all Bosch Turbine Fuel Pumps for safe and easy installation. To prevent hot start problems, Bosch includes a non-return valve that maintains system pressure long after the vehicle has been shut off.

Product Features:
  • OE-Equivalent Direct fit for easy installation.
  • OE connections and fittings.
  • Superior turbine pump design that virtually eliminates fuel pulsation.
  • Precision, spin-balanced armature to reduce noise and vibration.
  • Premium carbon brushes, utilizing advanced materials.
  • Noise suppression coil that eliminates radio frequency interference.
  • Illustrated step-by-step instructions are included.
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Carquest Premium – Fuel Pump (Part No.E3496054)

Fuel Pump

from

$274.99
Carquest Premium electric fuel pumps are engineered by Carter Fuel Systems or Agility Auto Parts 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
See More

Carquest Premium – Fuel Pump E352513 (Part No.E352513)

Fuel Pump E352513

from

$111.99
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
See More

Bosch – Check Valve (Part No.E303027424BOS)

Check Valve

from

$37.42
Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket.
See More

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

Fuel Cap Tester Adapter

from

$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
See More

Carquest Premium – Fuel Cap Tester Adapter (Part No.12410)

Fuel Cap Tester Adapter

from

$15.99
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
See More

Most Popular 1991 Porsche 911 Fuel Injectors

Customize your Porsche with 11 Fuel Injectors products like Fuel Injectors, Fuel Injector Seal Kits, and Fuel Injector O-rings, all priced under $306.42.

ACDelco – Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with Seals with 2 O-Rings (Part No.217-3414)

Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with Seals with 2 O-Rings

from

$10.29
The ACDelco Professional Fuel Injector Seal Kit contains high quality aftermarket replacement components for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket kit contains components that are 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
See More

Carquest Premium – Fuel Injector Seal Kit (Part No.AS055)

Fuel Injector Seal Kit

from

$4.29
Product Features:
  • Premium OE quality materials
See More

Carquest – Fuel Injector Seal Kit (Part No.274838)

Fuel Injector Seal Kit

from

$8.99
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
  • High-quality materials withstand extreme conditions
  • Undergoes extensive testing to ensure reliability
  • As a global manufacturer of automotive aftermarket products, we maintain complete quality control throughout the manufacturing process
See More

Bosch – Fuel Dist Valve Kit (Part No.C20101700156BOS)

Fuel Dist Valve Kit

from

$306.42
Fuel Dist Valve Kit

Kayser – Cut Off Valve (Part No.C4086425553KAY)

Cut Off Valve

from

$133.26
Cut Off Valve

Bosch – Port Fuel Injector (Part No.C100013514BOS)

Port Fuel Injector

from

$95.62
Port Fuel Injection (PFI) is the world’s most widely used system for internal combustion engines and offers many advantages for engines with a low pressure output.

Product Features:
  • Low-pressure systems are less complex and more affordable than high-pressure systems
  • Robust combustion process tolerates lower-quality fuel
  • Maintenance-friendly design reduces the overhead for system diagnostics
See More

Bosch – Fuel Injector: New (Part No.62702)

Fuel Injector: New

from

$76.99
Bosch Port Fuel Injectors (PFI) have a robust design and are capable of using Ethanol fuel (E100). All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark. Bosch is a recognized OE leader in fuel systems technology, with more than 45 years of gasoline fuel injection experience. The fuel injection program provides vast coverage for Domestic, European, And Asian vehicles.

Product Features:
  • Guaranteed OE fit, form and function
  • Manufactured of the highest quality materials
  • Provides precision flow and original spray pattern for optimal performance
  • Product includes top and bottom mounting o-ring
  • Maintains new-car smoothness and drivability
See More

ACDelco – Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 2 O-Rings (Part No.217-3366)

Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 2 O-Rings

from

$3.29
The ACDelco Professional Fuel Injector Seal Kit contains high quality aftermarket replacement components for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket kit contains components that are 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
See More

Bosch – Fuel Injector Seal (Part No.C101036820BOS)

Fuel Injector Seal

from

$2.08
Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket.
See More

Original Equipment – Fuel Injector O-Ring (Part No.C101262400OEA)

Fuel Injector O-Ring

from

$1.22
Fuel Injector O-Ring

Elring – Fuel Injector O-Ring (Part No.C101262400ELR)

Fuel Injector O-Ring

from

$1.09
Fuel Injector O-Ring

Top Picks for 1991 Porsche 911 Air Flow Sensors

Upgrade Porsche 911s with top-quality Air Flow Sensors parts, including 3 OEM and aftermarket selections for your 1991 model.

ACDelco – Multi-Purpose Wire Connector with Leads (Part No.PT2164)

Multi-Purpose Wire Connector with Leads

from

$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
See More

Bosch – Pressure Sensor (Part No.0280101001)

Pressure Sensor

from

$366.99
Bosch OE quality pressure sensors for accurate measurements with high durability, fast response time and wide measuring range

Product Features:
  • Bosch OE quality pressure sensors for accurate measurements
  • Bosch OE quality pressure sensors for long term stability
  • Bosch OE quality pressure sensors with a short response time
  • Bosch OE quality pressure sensors with improved media resistance
See More

Bosch – Air Temperature Sensors (Part No.C6000158179BOS)

Air Temperature Sensors

from

$219.45
Air Temperature Sensors measure the temperature of the incoming air to the engine. This information is provided to the Engine Control Module (ECU) to determine the correct amount of fuel needed for optimum performance and economy.

Product Features:
  • Extreme Temperature range: -40F – +260F
  • Robust Design with High Resistance to Engine Vibrations
  • OE or Better – Quality, Performance, and Function
See More

In-Demand Gas Caps for 1991 Porsche 911s

Select from 3 premium Gas Caps parts for your 1991 Porsche 911, with prices ranging from $11.99 to $18.79.

Carquest Premium – Fuel Cap (Part No.10826)

Fuel Cap

from

$11.99
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:
  • 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
See More

Carquest Premium – Locking Fuel Cap (Part No.10596)

Locking Fuel Cap

from

$17.49
None

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
See More

Motorad – Tethered Fuel Cap (Part No.MGC826T)

Tethered Fuel Cap

from

$18.79
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:
  • 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
See More

Most Sold 1991 Porsche 911 Oxygen Sensors

Explore our best-selling Porsche parts for the 1991 911 among 5 OEM and aftermarket options starting from $74.99.

Bosch – Oxygen Sensor: 3 Wire, 28.54" Long, Heated, Universal (Part No.15735)

Oxygen Sensor: 3 Wire, 28.54" Long, Heated, Universal

from

$79.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.

Product Features:
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Includes Smart Link Connector, no soldering required
  • No special tools required for installation
  • Seared protection tube due to 100% functional quality test
  • Performance meets or exceeds OE specifications
See More

DENSO – Oxygen Sensor: Upstream, 3 Wire, 26.81" Long, Heated, Exact Fit (Part No.234-3031)

Oxygen Sensor: Upstream, 3 Wire, 26.81" Long, Heated, Exact Fit

from

$147.99
DENSO Oxygen 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. This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity. DENSO gives you the right part and the right fit, the first time.

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
See More

Bosch – Bosch Oxygen Sensor (Part No.C501033537BOS)

Bosch Oxygen Sensor

from

$135.10
The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best-in-class performance and maximum service life.

Product Features:
  • OE-Equivalent.
  • Direct fit for easy installation.
  • OE Style connectors and wire lengths.
  • Base ceramic probe of Zirconium and Yttrium.
  • Patented Platinum Power Grid.
See More

Bosch – Oxygen Sensor: 3 Wire, 26.97" Long, Heated, Exact Fit (Part No.13924)

Oxygen Sensor: 3 Wire, 26.97" Long, Heated, Exact Fit

from

$114.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.

Product Features:
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
See More

DENSO – Oxygen Sensor: 3 Wire, 11.77" Long, Heated, Universal Fit (Part No.234-3000)

Oxygen Sensor: 3 Wire, 11.77" Long, Heated, Universal Fit

from

$74.99
DENSO Oxygen 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. This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity. DENSO gives you the right part and the right fit, the first time.

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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Top-Rated Fuel and Emissions Systems Brands For Your 1991 Porsche 911

Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 1991 Porsche 911s. Below you’ll find some of our best rated Fuel and Emissions Systems from Carquest Premium, and more. Fuel and Emissions Systems from these brands that fit a 1991 911 start at just $4.29 and are rated as high as 4 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.

Popular Carquest Premium 1991 Porsche 911 Fuel and Emissions Systems

When it comes to maintaining or upgrading your 1991 Porsche 911, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. Carquest Premium ticks all of those boxes. We offer a wide selection of Carquest Premium Fuel and Emissions Systems, specifically designed for the 1991 Porsche 911. With over 10 Carquest Premium brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.29, with an average price of just $75.97. Plus, with over 3 customer reviews and an average rating of 4 stars, you can trust that our Carquest Premium Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

Fuel Injector Seal Kit
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$4.29
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Fuel Injector Seal Kit

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Fuel Pump Relay
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$248.99
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Fuel Pump Relay

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Locking Fuel Cap
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$17.49
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Locking Fuel Cap

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FAQs for 1991 Porsche 911 Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 1991 Porsche 911s?

Out of 37 Fuel and Emissions Systems that fit 1991 Porsche 911s, the following parts are the top sellers:

What’s the price range for 1991 Porsche 911 Fuel and Emissions Systems?

Fuel and Emissions System prices for the 1991 Porsche 911 start at $1.09 and go up to $452.57 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 1991 Porsche 911?

The average price for Fuel and Emissions Systems for the 1991 Porsche 911 is $102.61. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other Porsche 911 model years?

Yes, we currently carry Fuel and Emissions Systems for 59 model years of Porsche 911s between 1965 and 2024. Fuel and Emissions Systems are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Fuel and Emissions Systems for my 1991 Porsche 911?

The cheapest 1991 Porsche 911 Fuel and Emissions Systems we carry in stock are:

What types of Fuel and Emissions Systems do you sell for my 1991 Porsche 911?

Can I get help with 1991 Porsche 911 Fuel and Emissions System orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Porsche Fuel and Emissions Systems and more.

What is your return policy for Porsche 911 Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Porsche 911 Fuel and Emissions Systems and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.