Ko-Ken KO106-8SX10S Drain Plug Key Bit, 8S x 10S

The Ko-Ken 106 is a drain plug key bit listed in the Automotive Tools section of the catalogue. This listing holds 5 sizes, shown in the store as 8 x 10, 10 x 11, 12 x 13, 14 x 17 and 19 mm and in the catalogue as the rows 8S x 10S, 10H x 11H, 12H x 13H, 14H x 17H and 19H (manufacturer-stated). The catalogue table is headed 4-point / 6-point male bits and does not explain the letters S and H.

The catalogue prints no drive size for the 106 keys; the 4102 adaptor, which is a separate item, connects them to a drive tool and is included in the 4202 Drain Plug Key Set.

Each size is listed in the table below with its length and weight.

Where this product is used

• Removing and refitting drain plugs
• Engine and gearbox servicing
• Workshop and vehicle maintenance

Features

• Male bit ends (manufacturer-stated)
• Lengths of 24 and 32 mm (manufacturer-stated)
• Weights from 40 to 55 g (manufacturer-stated)
• Sizes 8 to 19 mm

Key specifications

Lengths and weights are manufacturer-stated (Ko-ken catalogue 2025-26).

Selecting the right option

Match the key to the drain plug on your engine or gearbox; the table lists each size with its length and weight.

Related products

Related Ko-Ken products: Ko-Ken 4202 Drain Plug Key Set, 8 to 19 mm, 7 Pieces, Ko-Ken 3300FN Flare Nut Socket, 8 to 19 mm, 3/8 in Drive, Ko-Ken 3305PZ Spark Plug Socket with Magnet, 12-Point, 14 and 16 mm, 3/8 in Drive and Ko-Ken 3127 Nut Twister Socket, 8 to 17 mm, 3/8 in Drive.