ACCEL 8198 Performance U-Groove Header Spark Plug
- Pack of 8 copper-core shorty plugs
- 14mm machine-rolled threads
- Standard 5/8 socket fit
- Copper core, alloy steel top
- 8.8 ounces, universal fit
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A pack of shorty copper-core plugs made for engines with little room between the boots and the headers or manifolds. The listing gives no heat range or gap, so match those to your engine first.
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ASIN: B000BW8NYCModel: 8198Category: Spark Plugs
Overview
Not a full-length plug, this ACCEL shorty is built for cramped spaces where plug boots can burn or headers get dented. The set comes as eight plugs with a copper core and machine-rolled threads, and it uses a standard socket.
The short body is the point: it eases installation and removal where a regular plug and boot will not fit. The description makes broad performance claims that the listing does not back with a heat range, gap or thread reach.
Who it's for
For engines where plug boots sit close to exhaust headers or manifolds and a standard plug is hard to reach. Owners who need documented plug specifications should check the manufacturer's chart first.
Pros and cons
- Eight plugs in the pack
- Copper core for conduction
- Machine-rolled threads protect heads
- Works with a standard socket
- Heat range not listed
- Vehicle fitment is generic
- Warranty terms not stated
Performance notes
A copper core conducts heat well, and the shorty body gives clearance for the boot away from the headers. The machine-rolled threads are meant to protect the cylinder head during installation.
Specifications
| Model | 8198 |
|---|---|
| Dimensions & fit | |
| Thread size | 14mm |
| Socket | Standard 5/8 |
| Weight | 8.8 ounces |
| Construction & materials | |
| Core material | Copper |
| Top material | Alloy Steel |
| Included components | |
| Unit count | 8 Count |
| Other details | |
| Number of items | 8 |
| Fit type | Universal Fit |
| Part number | 8198 |
Frequently asked questions
How many plugs are in the ACCEL 8198 pack?
Eight. The title says pack of 8, and the unit count is 8.
What socket does the ACCEL 8198 shorty plug use?
The description says it uses a standard 5/8 socket.
Are the ACCEL 8198 plugs full-length plugs?
No. They are shorty plugs designed for cramped spaces between plug boots and headers.