2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab
2PCS O2 Oxygen Sensor Extension Spacer adapter for 2001-2010 Subaru and Saab models is a 45 mm M18×1.5 mm threaded extender with a 7/8-inch hex head, priced at $9.09. It’s ideal for off-road enthusiasts needing extra sensor clearance without permanent modification.
● In stock
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Key features
- 45 mm length — adds clearance for larger exhaust components.
- M18×1.5 mm thread — compatible with factory O₂ sensor threads.
- 7/8-inch hex head — matches most sensor heads for easy alignment.
- Two-piece kit — provides a spare or dual-side installation.
- Off-road only — designed for performance builds, not street-legal emissions.
- Heat-treated steel — resists engine heat and vibration.
- Easy install — unscrew sensor, screw into extender, reinstall.
Pros
- +Low cost solution for sensor clearance issues.
- +Simple bolt-on installation without welding.
- +Compatible with a range of 2001-2010 Subaru and Saab models.
Cons
- −Not intended for street-legal emissions compliance.
- −Only suitable for off-road or temporary applications.
- −Limited to vehicles with M18×1.5 mm sensor threads.
About 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab
What is 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab?
The 2PCS O2 Oxygen Sensor Extension Spacer adapter is a 45 mm steel tube that lengthens the mounting point of an oxygen sensor on 2001-2010 Subaru and Saab models. It features an M18×1.5 mm thread that matches the standard O₂ sensor housing and a 7/8-inch hex head that mirrors the sensor’s own head shape, allowing a seamless bolt-on connection. Sold by Lab Work Auto under SKU F7-5705, the kit includes two identical spacers priced at $9.09 each.
Key features
- 45 mm length — adds clearance for larger exhaust components.
- M18×1.5 mm thread — compatible with factory O₂ sensor threads.
- 7/8-inch hex head — matches most sensor heads for easy alignment.
- Two-piece kit — provides a spare or dual-side installation.
- Off-road only — designed for performance builds, not street-legal emissions.
- Heat-treated steel — resists engine heat and vibration.
- Easy install — unscrew sensor, screw into extender, reinstall.
Who is 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab for?
The adapter targets DIY enthusiasts, off-road racers, and rally prep shops that have modified exhausts, intake systems, or chassis components which push the original O₂ sensor too close to hot surfaces. It is also useful for owners who need a quick replacement when the original sensor mounting area is damaged or corroded. Because installation requires only basic hand tools, even a moderately experienced hobbyist can fit it without professional assistance.
How does 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab compare?
When stacked against generic straight-sided extenders, the 7/8-inch hex head of this spacer aligns precisely with the sensor, eliminating the need for additional washers or custom machining. Its steel construction offers better durability than thin-walled aluminum alternatives, though it is not a street-legal emissions solution. Priced at $9.09, it provides a cost-effective way to gain the needed clearance compared with custom-fabricated brackets that can cost several times more.
Overall, the 2PCS O2 Oxygen Sensor Extension Spacer offers a practical, low-cost fix for clearance challenges on older Subaru and Saab platforms, delivering reliable performance for off-road enthusiasts without compromising engine operation.
Best use cases
- →Installing a larger exhaust on a Subaru WRX for track days.
- →Adding a cold-air intake that shortens sensor clearance on a Saab.
- →Replacing a broken O₂ sensor where original mounting space is damaged.
- →Preparing a rally-prep vehicle that requires extra sensor length.
Is 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab right for you?
Buy this extender if you own a 2001-2010 Subaru or Saab and need extra O₂ sensor clearance for off-road modifications. Installation requires basic hand-tool skills—just unscrew the sensor, thread the spacer, and re-install. It’s a budget-friendly alternative to custom-fabricated brackets or longer-length sensors, which can cost significantly more. For street-legal builds, consider OEM-approved sensor extensions that meet emissions regulations. today.
How it compares: Compared with generic straight-sided extenders, this spacer’s 7/8-inch hex head aligns perfectly with most O₂ sensors, reducing installation time. Unlike expensive custom brackets, it offers a ready-made, heat-treated steel piece at a fraction of the cost, though it remains limited to off-road or temporary use.
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What does the 2PCS O2 Oxygen Sensor Extension Spacer do?
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The spacer lengthens the mounting point of an O₂ sensor by 45 mm, creating additional clearance for larger exhaust components or modified intake systems. It screws onto the sensor’s M18×1.5 mm thread and presents a 7/8-inch hex head that bolts directly to the exhaust, restoring proper sensor positioning.
Does the spacer affect emissions testing?
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Because the adapter is intended for off-road use only, it does not meet the strict emissions standards required for street-legal testing. Installing it on a vehicle that must pass a smog inspection could result in a failed test, so it should be removed or replaced with a certified sensor extension before any official inspection.
How easy is installation?
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Installation is straightforward: remove the existing O₂ sensor, thread the 45 mm spacer onto the sensor’s M18×1.5 mm thread, then reinstall the sensor into the spacer and bolt the assembly back into the exhaust. No special tools beyond a standard socket are required, and the process typically takes under ten minutes for an experienced DIYer.
Is the spacer compatible with all 2001-2010 Subaru and Saab models?
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The spacer is designed for any 2001-2010 Subaru or Saab vehicle that uses the standard M18×1.5 mm O₂ sensor thread, which includes most models in that generation such as the Subaru Impreza, WRX, Legacy, and Saab 9-3. Verify the sensor thread size before purchase to ensure a proper fit.
Can I use the spacer for street-legal emissions compliance?
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No. The product is marketed for off-road or temporary applications only and does not carry the certifications required for street-legal emissions compliance. For road-going vehicles, you should select an OEM-approved sensor extension that meets local environmental regulations and retains the original sensor’s calibration.
How much does 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab cost?
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2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab is $9.09 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab in stock at Lab Work Auto?
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Yes, 2PCS O2 Oxygen Sensor Extension Spacer adapter FIT For 2001-2010 Subaru Saab is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-5705