Tighten and loosen nuts and bolts with sockets, without taking the tool off at every turn.

Spark plug socket, Fervi BN4C4L016A
Key features
- Size (mm)16
- Connection3/8"
- Length (mm)63
What it is
Spark plug socket, Fervi BN4C4L016A. Key specifications: size (mm) 16, connection 3/8", length (mm) 63.
A socket is a cylinder with a hexagonal or bi-hex profile that fits over the nut and mounts on a ratchet; the category also includes box spanners and T-handle wrenches.
What it is for
Used in mechanical maintenance of machinery and plant, during scheduled shutdowns or breakdowns and for vehicle maintenance, in the workshop and on the road.
How to use it
Choose a socket of the exact size with the ratchet's drive, standard or deep depending on how far the bolt protrudes. Push it fully onto the nut and pull the handle smoothly, without jerking. Chrome sockets are for hand use only: impact wrenches require impact sockets.
Where it is used
- Mechanical workshops
Technical data
- Size (mm): 16
- Connection: 3/8"
- Length (mm): 63
Who it is for
Designed for auto electricians and mechanics.
Related products
- Spark plug socket, Fervi BN4C4L018A
- Spark plug socket, Fervi BN4C3L021A
- Ergonomic ratchet Fervi — from the category Ratchets
- Set of 1/2'' hex sockets, imperial, Fervi SN4P3N027 — from the category Ratchet and Socket Sets
- Impact extension bar for socket wrenches Fervi PI401250 — from the category Impact Sockets
- Browse the whole category: Socket Wrenches
Before you order
In your request, please state the dimensions, the length, the connection type and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Indicative price €3,36 – €5,60 + VAT
Incl. 22% VAT: €4,10 – €6,83
Indicative, excluding VAT, depends on quantity, ex works: the final price is the one in your quote
Source: Listino Fervi (fervi.com) · updated 21/07/2026
Specifications 4
| Size (mm) | 16 |
|---|---|
| Connection | 3/8" |
| Length (mm) | 63 |
| Item code | BN4C4L016A |
Compare with similar models
Technical data declared by the manufacturers. An empty cell means the figure is not declared.
| Feature |
This model
Spark plug socket, Fervi BN4C4L016A
|
Spark plug socket, Fervi BN4C4L018A
|
Spark plug socket, Fervi BN4C4L021A
|
Spark plug socket, Fervi BN4C3L016A
|
|---|---|---|---|---|
| Brand | Fervi | Fervi | Fervi | Fervi |
| Size | 16 mm | 18 mm | 21 mm | 16 mm |
| Connection | 3/8" | 3/8" | 3/8" | 1/2" |
| Length | 63 mm | 63 mm | 65 mm | 65 mm |
| View product → | View product → | View product → |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Lubricate, free up and protect against rust when sprayed directly onto the part.
Keep tools and small parts organised and secure during transport.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
For safety
Protect hands from abrasion, dirt, liquids and minor cuts while keeping a firm grip.









