ACCEL 8199 HP Copper Spark Plug
- Shorty copper-core plug, 14 mm threads
- Vehicle type listed as motorcycle, vehicle specific fit
- 12 ounces
- Standard 5/8 socket per the description
- Count is 1, text mentions a pack of eight
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A copper-core shorty plug for tight spaces near headers. The listing is inconsistent: the fields say one plug for a motorcycle, while the text mentions a pack of eight.
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ASIN: B000BWAGOWModel: 8199Category: Spark Plugs
Overview
Threading into a cramped head where boots would otherwise burn, this ACCEL shorty plug has a copper core and machine-rolled threads. It is meant to slip between the boot and the headers or manifold.
The shorty body gives clearance in tight spaces, and the copper core adds thermal conductivity. Before ordering, resolve the conflict between the single-unit count and the pack-of-eight text, and the motorcycle fitment note.
Who it's for
Intended for engines where space between the boot and the exhaust is limited. Buyers who need a certain quantity should ask the seller what is in the package.
Pros and cons
- Shorty body for tight clearance
- Copper core conducts heat
- Standard socket fit
- Quantity details conflict
- Fitment field says motorcycle
- Heat range not listed
Performance notes
A copper core carries heat away from the electrode, and the shorty body leaves room between the boot and nearby exhaust parts. The machine-rolled threads are described as protecting the head on installation.
Specifications
| Model | 8199 |
|---|---|
| Dimensions & fit | |
| Thread size | 14 mm |
| Weight | 12 ounces |
| Construction & materials | |
| Core material | Copper |
| Top material | Alloy Steel |
| Compatibility & installation | |
| Vehicle type | Motorcycle |
| Included components | |
| Unit count | 1 Count |
| Other details | |
| Number of items | 1 |
| Fit type | Vehicle Specific Fit |
| Part number | 8199 |
Frequently asked questions
Does the ACCEL 8199 spark plug fit a motorcycle?
The vehicle type field says motorcycle with a vehicle specific fit, but the text describes plugs for engines with headers. Check with the seller.
How many plugs come with the ACCEL 8199?
The unit count is 1, while the description mentions a pack of eight. Confirm the quantity before ordering.
What thread size is the ACCEL 8199 plug?
The thread size is 14 mm.