Which spark plug size is this socket designed for?

This socket is designed for spark plugs with an 18 mm width across flats.

What drive size does the Facom B.J18A1 spark plug socket have?

The socket has a 3/8" square drive, suitable for standard 3/8" ratchets and extensions.

What is the total length of this spark plug socket?

The total length of this socket is 90 mm.

Does this spark plug socket include a universal joint?

No, this is a rigid socket without an integrated universal joint.

FACOM B.J18A1 square cap 3/8" for 18 mm spark plugs, 90 mm

Name: FACOM B.J18A1 square cap 3/8" for 18 mm spark plugs, 90 mm
Brand: FACOM
SKU: 41299734
Price: 26.4 EUR
Availability: PreOrder

Supplier number: FACOM B.J18A1 | EAN 3148510136684

Recommended Retail Price €40.10

26.40 tax incl.

€21.82 excl. VAT (incl. all environmental contributions)

On order: delivered from 13/10/2026

Delivery by DHL
Lifetime warranty on Facom? Or limited in time? Read more about it here.

✆ Talk to a specialist

Secure extraction for deep spark plugs

Practical benefits

Exact fit for plugs: With the 18 mm socket size, you install and remove 18 mm spark plugs accurately without damaging the ceramic body.
Extended reach into engines: The 90 mm overall length lets you reach deeply recessed spark plugs comfortably within tight cylinder head spaces.
Standard square drive compatibility: The 3/8" internal square drive connects securely to your standard ratchets and extension bars for smooth torque transfer.

In a nutshell

The right choise for

With the Facom B.J18A1 spark plug socket, you remove and install 18 mm spark plugs with complete control and precision. Thanks to its 90 mm overall length, you easily reach recessed spark plugs in deep cylinder heads without damaging the porcelain or hex. The standard 3/8" internal square drive fits securely onto your existing ratchet or torque wrench, ensuring smooth and direct torque transfer. Designed as a rigid socket without a universal joint, it provides the steady grip and reliability needed for maintaining cars, motorcycles, and garden machinery in any workshop.

Product information FAQ

€26.40

tax incl.

Key features according to our expert

Width across flats: 18 mm
Connection size: 3/8"
Connection profile: Internal square
Length: 90 mm
With cardan joint: No
Supplier warranty: FACOM - Lifetime (E)

Product description

Square sockets 3/8" for 16, 18 and 21 mm spark plugs

Features

Sockets with a holder system for the spark plug.

All Features

Width across flats: 18 mm
Connection size: 3/8"
Connection profile: Internal square
Length: 90 mm
With cardan joint: No
Supplier warranty: FACOM - Lifetime (E)
Warranty: Lifetime (E)

Brand FACOM
41299734
EAN 3148510136684
Supplier number FACOM B.J18A1
Warranty Lifetime warranty on Facom? Or limited in time? Read more about it here.

Frequently asked questions about this product

Answered by specialists

Which spark plug size is this socket designed for?: This socket is designed for spark plugs with an 18 mm width across flats.
What drive size does the Facom B.J18A1 spark plug socket have?: The socket has a 3/8" square drive, suitable for standard 3/8" ratchets and extensions.
What is the total length of this spark plug socket?: The total length of this socket is 90 mm.
Does this spark plug socket include a universal joint?: No, this is a rigid socket without an integrated universal joint.