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Mercedes-Benz 500SL Oxygen Sensor
10 itemsShop best-selling oxygen sensors for Ford, Chevy, Honda, Nissan, Toyota, and more. Direct-fit O2 sensors with fast response, improved MPG, and reliable emissions performance.
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DensoPart # 234-4000
Denso 234-4000 Oxygen Sensor
4.29 Reviews
$71.99
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3-year warranty
90 days free return
Fits 1996-1999 Acura SLX, 1986-1987 BMW 735i, 1986-1987 BMW L7, 1987-1988 BMW 325i, 1987-1988 BMW 325is, 1988-1988 BMW 325iX, 1988-1988 BMW 528e, 1993-1994 Buick Regal, 1994-1994 Buick Regal, 1994-1995 Buick Century, 1994-1995 Buick LeSabre, 1994-1995 Buick Regal, 1994-1995 Buick Roadmaster, 1994-1996 Buick Skylark, 1994-1998 Buick Park Avenue, 1995-1995 Buick Regal, 1995-1995 Buick Regal, 1995-1995 Buick Riviera, 1996-1996 Buick LeSabre, 1996-1996 Buick Roadmaster
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Vehicle: Mercedes-Benz 500SL
Quantity1
Item LocatedUnited States
Part interchange
234-4000, 13470, 15503, 15702, 15058, 13111, 13027, 13326,
...View moreitem #1003S484
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DensoPart # 234-3105
Oxygen Sensor - Upstream - Denso 234-3105
4.29 Reviews
$109.99
Low stock: Only 5 left
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3-year warranty
90 days free return
Fits 1990-1992 Mercedes-Benz 500SL, 1990-1993 Mercedes-Benz 300SL
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Vehicle: Mercedes-Benz 500SL
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-3105, 25520, 0095429417, 0095420617, 213-4159, OS581, OS570, 13152,
...View moreitem #1003RXUU
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Walker ProductsPart # 250-23074
Walker Products 250-23074 Oxygen Sensor, Upstream
55 Reviews
$113.99
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3-year warranty
90 days free return
Fits 1990-1992 Mercedes-Benz 500SL, 1990-1993 Mercedes-Benz 300SL
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Vehicle: Mercedes-Benz 500SL
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
250-23074
item #1001P9LX
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DensoPart # 234-3090
Denso 234-3090 Oxygen Sensor
4.29 Reviews
$72.99
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3-year warranty
90 days free return
Fits 1994-1994 Alfa Romeo 164, 1985-1986 Audi 4000, 1987-1987 Audi 4000, 1990-1991 Audi V8 Quattro, 1992-1994 Audi S4, 1993-1993 Audi 100 Quattro, 1993-1994 Audi 100, 1993-1995 Audi 90, 1993-1995 Audi 90 Quattro, 1994-1994 Audi 100 Quattro, 1994-1998 Audi Cabriolet, 1995-1997 Audi A6, 1995-1997 Audi A6 Quattro, 1995-1997 Audi S6, 1996-1996 Audi A4, 1996-1996 Audi A4 Quattro, 1997-1997 Audi A4, 1997-1997 Audi A4 Quattro, 1998-1998 Audi A6, 1998-1998 Audi A6 Quattro
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Vehicle: Mercedes-Benz 500SL
Quantity1
Item LocatedUnited States
Part interchange
234-3090, 13224, 13562, 13329, 13019, 15343, 13160, 13350,
...View moreitem #1003RWWP
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BoschPart # 15735
Bosch 15735 Oxygen Sensor
46 Reviews
$64.99
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3-year warranty
90 days free return
Fits 1983-1986 Alfa Romeo GTV-6, 1986-1994 Alfa Romeo Spider, 1987-1987 Alfa Romeo Milano, 1988-1989 Alfa Romeo Milano, 1991-1992 Alfa Romeo 164, 1985-1986 Audi 4000, 1986-1988 Audi 5000 Quattro, 1987-1987 Audi 4000, 1987-1987 Audi 5000, 1987-1987 Audi 5000, 1987-1987 Audi Coupe, 1988-1988 Audi 5000, 1988-1991 Audi 90, 1988-1992 Audi 80, 1988-1992 Audi 80 Quattro, 1988-1992 Audi 90 Quattro, 1989-1991 Audi 200, 1989-1991 Audi 200 Quattro, 1989-1992 Audi 100 Quattro, 1989-1993 Audi 100
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Vehicle: Mercedes-Benz 500SL
QuantityOne Set
Item LocatedUnited States
Part interchange
15735, 94460613500
item #1002DVCT
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Walker ProductsPart # 250-24038
Walker Products 250-24038 Oxygen Sensor
55 Reviews
$128.99
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3-year warranty
90 days free return
Fits 1990-1990 Mercedes-Benz 300E, 1991-1991 Mercedes-Benz 300E, 1992-1992 Mercedes-Benz 300E, 1992-1992 Mercedes-Benz 400SE, 1992-1993 Mercedes-Benz 300SE, 1992-1993 Mercedes-Benz 400E, 1992-1993 Mercedes-Benz 500E, 1992-1993 Mercedes-Benz 500SEL, 1992-1993 Mercedes-Benz 600SEL, 1993-1993 Mercedes-Benz 300E, 1993-1993 Mercedes-Benz 400SEL, 1993-1993 Mercedes-Benz 500SEC, 1993-1993 Mercedes-Benz 500SL, 1993-1993 Mercedes-Benz 600SEC, 1993-1993 Mercedes-Benz 600SL, 1994-1994 Mercedes-Benz E500, 1994-1994 Mercedes-Benz S320, 1994-1994 Mercedes-Benz S600, 1994-1994 Mercedes-Benz SL320, 1994-1994 Mercedes-Benz SL600
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Vehicle: Mercedes-Benz 500SL
Quantity1
Item LocatedUnited States
Part interchange
250-24038
item #1001PDW2
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Walker ProductsPart # 350-33043
Walker Products 350-33043 Oxygen Sensor, Upstream
55 Reviews
$91.99
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3-year warranty
90 days free return
Fits 1990-1992 Mercedes-Benz 500SL, 1990-1993 Mercedes-Benz 300SL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercedes-Benz 500SL
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
350-33043
item #1001P87L
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BoschPart # 15736
Bosch 15736 Oxygen Sensor
46 Reviews
$79.99
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3-year warranty
90 days free return
Fits 1987-1987 BMW 325i, 1987-1987 BMW 325is, 1988-1988 BMW 325i, 1988-1988 BMW 325is, 1988-1988 BMW 528e, 1988-1991 BMW 325iX, 1988-1994 BMW 750iL, 1989-1995 BMW 325i, 1989-1995 BMW 325is, 1989-1995 BMW 525i, 1991-1992 BMW 850i, 1991-1995 BMW 318i, 1991-1995 BMW 318is, 1993-1993 BMW 525iT, 1993-1994 BMW 740i, 1993-1994 BMW 740iL, 1993-1994 BMW 850Ci, 1994-1994 BMW 530i, 1994-1994 BMW 540i, 1994-1994 BMW 840Ci
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Vehicle: Mercedes-Benz 500SL
QuantityOne Set
Item LocatedUnited States
Part interchange
15736
item #1002DTPQ
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Walker ProductsPart # 350-34553
Walker Products 350-34553 Oxygen Sensor
55 Reviews
$116.99
Low stock: Only 3 left
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3-year warranty
90 days free return
Fits 1990-1990 Mercedes-Benz 300E, 1991-1991 Mercedes-Benz 300E, 1992-1992 Mercedes-Benz 300E, 1992-1992 Mercedes-Benz 400SE, 1992-1993 Mercedes-Benz 300SE, 1992-1993 Mercedes-Benz 400E, 1992-1993 Mercedes-Benz 500E, 1992-1993 Mercedes-Benz 500SEL, 1992-1993 Mercedes-Benz 600SEL, 1993-1993 Mercedes-Benz 300E, 1993-1993 Mercedes-Benz 400SEL, 1993-1993 Mercedes-Benz 500SEC, 1993-1993 Mercedes-Benz 500SL, 1993-1993 Mercedes-Benz 600SEC, 1993-1993 Mercedes-Benz 600SL, 1994-1994 Mercedes-Benz E500, 1994-1994 Mercedes-Benz S320, 1994-1995 Mercedes-Benz C280, 1994-1995 Mercedes-Benz E420, 1994-1995 Mercedes-Benz S420
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Vehicle: Mercedes-Benz 500SL
Quantity1
Item LocatedUnited States
Part interchange
350-34553
item #1001PG00
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DelphiPart # ES10449
Oxygen Sensor - Front Side - Delphi ES10449
4.539 Reviews
$121.99
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3-year warranty
90 days free return
Fits 1990-1993 Mercedes-Benz 300E, 1992-1992 Mercedes-Benz 400SE, 1992-1993 Mercedes-Benz 300SE, 1992-1993 Mercedes-Benz 400E, 1992-1993 Mercedes-Benz 500E, 1992-1993 Mercedes-Benz 500SEL, 1992-1993 Mercedes-Benz 600SEL, 1993-1993 Mercedes-Benz 400SEL, 1993-1993 Mercedes-Benz 500SEC, 1993-1993 Mercedes-Benz 500SL, 1993-1993 Mercedes-Benz 600SEC, 1993-1993 Mercedes-Benz 600SL, 1994-1994 Mercedes-Benz C280, 1994-1994 Mercedes-Benz E500, 1994-1994 Mercedes-Benz S320, 1994-1994 Mercedes-Benz S500, 1994-1995 Mercedes-Benz E420, 1994-1995 Mercedes-Benz S420, 1994-1995 Mercedes-Benz S600, 1994-1995 Mercedes-Benz SL320
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Vehicle: Mercedes-Benz 500SL
Quantity1
Installation PositionFront
Item LocatedUnited States
Part interchange
ES10449, SU7275, SU7277, SU7300, SU7316, SU7317, 213574, 213575,
...View moreitem #1001X2EV
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Your vehicle’s oxygen sensor (also known as O2 sensors) plays a critical role in engine performance, fuel efficiency, and emissions control. By continuously measuring the amount of unburned oxygen in the exhaust, the oxygen sensor sends real-time feedback to your engine control unit (ECU), ensuring the perfect air-fuel mixture.
When an oxygen sensor fails, your engine essentially runs “blind,” leading to poor fuel economy, rough idling, reduced performance, and a persistent check engine light. A timely front oxygen sensor replacement or replacement of a faulty upstream oxygen sensor or downstream oxygen sensor can restore optimal driving conditions and help you pass emissions tests with ease.
Why Choose A-Premium Oxygen Sensors?
Unlike universal parts that require cutting and splicing wires, A-Premium O2 sensors are engineered for direct plug-and-play installation.
- OEM-style connectors for seamless fit
- Pre-coated anti-seize threads for easy installation
- Laser-welded body construction for durability
- High-temperature sintered coating for long service life
- Premium insulation sheathing and impact-resistant design
- Slotted guard tube for sensor protection
- High heat dissipation structure for extreme environments
Advanced Performance & Precision
A-Premium oxygen sensor technology ensures fast, accurate, and stable performance:
Performance & Response
- ≤200ms fast response time
- High-efficiency oxygen sensing
- Zirconia sensing element
- Real-time signal feedback
Precision & Control
- Real-time exhaust tracking
- Accurate combustion control
- Stable signal output
Efficiency & Engine Benefits
- Improved fuel efficiency
- Enhanced engine performance
- Reduced harmful emissions
- Extended engine lifespan
Environmental Adaptability
- Operating range: -40°F to 266°F
- Air-tight sealing design
- Stable performance under harsh conditions
3 Symptoms of a Bad Oxygen Sensor
Because O2 sensors operate in extreme heat and carbon-rich environments, they naturally degrade over time.
- Check Engine Light (CEL): Common codes include P0135, P0171, and P0420. These often point to issues with an upstream oxygen sensor or oxygen sensor bank 1.
- Poor Fuel Economy: A faulty oxygen sensor may cause a rich fuel mixture, dramatically lowering MPG. 20-40% worse fuel economy overnight.
- Rough Idle & Stalling: Incorrect readings from your downstream oxygen sensor or upstream sensor can disrupt engine stability.
- Rotten egg smell: Catalytic converter overheating from bad fuel mixture
Understanding O2 Sensor Positions: Upstream vs Downstream
Modern vehicles may have multiple oxygen sensor units, making it essential to identify the correct one:
- Oxygen Sensor Bank 1vs Bank 2
- oxygen sensor bank 1 refers to the side of the engine with Cylinder #1
- Bank 2 is the opposite side
- Upstream Oxygen Sensor(Sensor 1)
- Located before the catalytic converter
- Controls air-fuel ratio
- Most common need for front oxygen sensor replacement
- Downstream Oxygen Sensor(Sensor 2)
- Located after the catalytic converter
- Monitors emissions system efficiency
Tip: Always match your diagnostic code to the correct upstream oxygen sensor or downstream oxygen sensor before purchasing.
Complete Your Emissions Repair
Replacing your oxygen sensor is often part of a larger emissions system fix. Consider inspecting these related components:
- Catalytic Converter: Persistent issues after replacing a downstream oxygen sensor may indicate converter failure
- MAF Sensor: Works with your oxygen sensor to calculate air intake
- Ignition Coils & Spark Plugs: Misfires can damage O2 sensors quickly
Shop by Popular Makes
To help you quickly find the right oxygen sensor, explore our most popular vehicle-specific options:
Browse our most searched and best-selling vehicle-specific oxygen sensor options to quickly locate the right fit for your car.
Frequently Asked Questions
Can I clean my oxygen sensor instead of replacing it?
Should I replace O2 sensors in pairs?
Do I need a special tool?
How long do oxygen sensors last?
What’s the difference between upstream and downstream sensors?
What happens if I ignore a bad oxygen sensor?
How do I know if it’s Bank 1 or Bank 2?
Will replacing an oxygen sensor improve MPG?
How do oxygen sensor voltages relate to fuel mixture?
How much does it cost to replace an oxygen sensor?
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