Spark Exhaust Lambda Sensor Cap M18 × 1.5 Stainless Steel Drilled TAPPO019
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M18 × 1.5 in AISI 304, drilled. The larger of Spark's two stainless sensor caps, and the thread most factory bosses are cut to.
Key Features
- Lambda sensor cap, M18 × 1.5 thread.
- AISI 304 stainless steel.
- Drilled.
- Spark part number TAPPO019, made in Mantova, Italy.
M18 × 1.5
The standard oxygen sensor thread on almost every modern motorcycle, and the thread Spark cuts into its own weldable bung SGATT139. If you are closing a boss on a Spark system, this is the size it is likely to be.
Cap or Plug
Spark offers both for this thread: this stainless cap at seventeen euro and the brass plug TAPPO007 at eleven. The cap matches the pipe visually and stays put; the plug is softer, seals on a copper washer and comes out again easily.
Choose the cap for a permanent installation and the plug for a boss that may carry a sensor later.
Drilled, Not Blank
Spark's own description notes holes in this part. Where the requirement is a gas-tight closure rather than a neat finish, the brass plug and its copper washer are the article to order instead.
Ordering
One per boss. The M12 × 1.25 version is TAPPO018.
| Part number | TAPPO019 |
|---|---|
| Type | Lambda plug |
| Material | AISI 304 stainless steel |
| Dimensions | M18 thread |
| Fitment | Universal |
| Road approval | None — track use only |
| Thread | M18 × 1.5 |
| Origin | Made in Italy |
| Manufacturer | Spark Exhaust Technology, Mantova |
| Manufacturer description | Plug M18 - with holes - stainless steel |
Universal product — Please check whether it fits your bike.
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// Spark Exhaust
Spark Exhaust Lambda Sensor Cap M18 × 1.5 Stainless Steel Drilled TAPPO019

Tech specs
- Part number
- TAPPO019
- Type
- Lambda plug
- Material
- AISI 304 stainless steel
- Dimensions
- M18 thread
- Fitment
- Universal
- Road approval
- None — track use only
- Thread
- M18 × 1.5
- Origin
- Made in Italy
- Manufacturer
- Spark Exhaust Technology, Mantova
- Manufacturer description
- Plug M18 - with holes - stainless steel
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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