Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5
Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5

Stainless Steel O2 Sensor Weld Bung 45° Cut M18x1.5

$17.00
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Shipping calculated at checkout.

Click to learn about muffler sound profiles
  • MADE IN THE US
  • Free shipping
  • Stealth Warranty

Stealth Pipes mufflers are grouped into three sound profiles to help you choose the tone that fits your riding style. Each profile reflects overall loudness, aggression, and exhaust character, not just volume, but how the bike sounds on the road.

Balanced mufflers deliver a full exhaust note without excessive volume, making them ideal for riders who want strong sound presence without overwhelming noise.

Aggressive mufflers increase volume and bite, producing a raw, performance-driven sound that stands out under throttle while still remaining rideable.

Extreme mufflers are built for riders who want the loudest, most unapologetic sound possible. These options deliver an aggressive exhaust note designed to dominate attention.

All Raw Stainless pipes will ship inside of 4 weeks from purchase date. Likely much sooner, so email or call for more accurate lead times. Polished products add 3-4 weeks to arrival on your doorstep.

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Replacing stripped or damaged 02 sensor ports? Adding an 02 sensor bung to a newly fabricated exhaust? This weld-on 45 degree 02 sensor bung is what you need!

The 45 degree cut gives you the versatility and ease of installing sensors in a tight spot that may require an angle. The cut is also notched which gives you the ease of welding it on a round surface.

Made from 304 stainless steel, using the popular size of 18mm x 1.5mm thread. This bung will accept most standard 02 sensors from most manufacturers.

Sold Individually, NOT as a pair.

muffler Sound Profiles Explained

Balanced

Balanced mufflers deliver a full exhaust note without excessive volume, making them ideal for riders who want strong sound presence without overwhelming noise.

Aggressive

Aggressive mufflers increase volume and bite, producing a raw, performance driven sound that stands out under throttle while still remaining rideable.

Extreme

Extreme mufflers are built for riders who want the loudest, most unapologetic sound possible. These options deliver an aggressive exhaust note designed to dominate attention.

pick your exhaust system and muffler

modular fit mufflers

Every Stealth Pipes muffler is a direct slip on fit with every exhaust system we make. Change up your muffler (and sound) in minutes.

Stealth Pipes exhaust system on Harley FXR – rear angle, stainless muffler upgrade for 1985–1994 models
Harley FXR fitted with Stealth Pipes exhaust system – 1985–1994 stainless steel headers and muffler

Not The Right Bike? Find Yours Below.

Harley Softail Exhausts (’87–’17, ’17–’25 M8)
Softail
Harley Dyna Exhausts (’96–’05, ’06–’17)
Dyna
Harley Bagger Exhausts (’96–’16, ’17–’25)
Bagger
Harley Sportster Exhausts (’86–’03, ’04–’22)
Sportster
Harley FXR Exhausts (’85–’94)
FXR
Harley XG 500 / 750 Exhausts
XG 500 / 750
Harley Pan America Exhausts (’21–’24)
pan america
Indian Motorcycle Exhaust Systems
indian

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