RPM O2 Sensor Bung Plug
Seal off unused wideband or factory oxygen sensor ports securely with the RPM SXS O2 Sensor Bung Plug and Washer Replacement Kit! Whether deleting secondary emissions sensors, switching between dyno-tuning wideband probes and factory narrowbands, or replacing a lost or seized factory plug, this heavy-duty hardware kit guarantees an airtight, leak-free seal on any standard exhaust port.
Exhaust gas leaks upstream of or near sensor bungs introduce fresh oxygen into the exhaust stream, creating false lean readings, throwing erratic ECU error codes, and causing unburnt fuel popping on deceleration. Precision-machined from heavy-duty, heat-resistant steel, the RPM plug features the industry-standard M18 x 1.5mm thread pitch used on virtually all modern UTVs, powersports platforms, and automotive aftermarket wideband systems.
Each plug is engineered with an integrated hex head for easy installation and removal without rounding off inside cramped engine bays. Paired with a heavy-duty copper/crush sealing washer, it withstands extreme exhaust gas temperatures (EGTs), anti-lag combustion pops, and harsh off-road vibration without loosening or backing out.
Key Highlights & Technical Specifications:
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Thread Sizing: Industry-Standard M18 x 1.5mm Thread Pitch
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Drive Style: External Hex Head for positive tool engagement and easy removal
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Plug Construction: Heavy-Duty, High-Temp Corrosion-Resistant Coated Steel
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Sealing Mechanism: High-Temperature M18 Crush Washer Included (Airtight mechanical seal)
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Thermal Threshold: Engineered to withstand extreme turbo EGTs, exhaust backfire, and trackside heat cycles
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Primary Purpose: Safely caps unused O2 sensor bungs, dyno tuning ports, and wideband sensor bungs
Features:
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100% Leak-Proof Exhaust Seal: Included crush washer creates an impermeable seal against high-pressure exhaust pulses, eliminating disruptive leaks and false sensor readings.
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Standard M18 x 1.5 Sizing: Compatible with factory exhaust manifolds, mid-pipes, downpipes, mufflers, and all aftermarket wideband bung additions (AEM, Innovate, Dynojet, etc.).
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Heavy-Duty Hex Head Design: Low-profile, thick-walled hex allows high-torque tightening without stripping or rounding off in tight chassis quarters.
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Corrosion & Heat Treated: Resists thread galling, seizing, rust, and scale formation caused by intense exhaust heat, mud, snow, and trail wash chemicals.
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Direct Drop-In Replacement: Fast, simple replacement for lost, stripped, or rusted OEM exhaust plugs.
What's Included:
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(1) RPM SXS M18 x 1.5mm Hex Head O2 Sensor Bung Plug
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(1) RPM SXS Heavy-Duty M18 High-Temperature Sealing Crush Washer
Fitment & Compatibility:
Universal fitment on all factory and aftermarket exhaust bungs utilizing the standard M18 x 1.5 thread pattern. Fits All RPM SXS exhaust with second O2 Sensor port.
All orders typically ship within 2-4 business days of order being placed. Weekends, holidays, and weather may slow fulfillment down on order processing. Unless otherwise noted, backordered items will ship according to their estimated shipping times.