Seiko 5S21 Parts - Genuine OEM Watch Parts

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SEIKO 295W34SN01 Sapphire Crystal SACW010 - 5S21-8A00

SEIKO 295W34SN01 Sapphire Crystal SACW010 - 5S21-8A00

$128.00

(0.0)

SEIKO 310W74JM01 Hardlex Crystal SDY002J1 - 5S21-7A10

SEIKO 310W74JM01 Hardlex Crystal SDY002J1 - 5S21-7A10

$64.00

(0.0)

SEIKO 310W74JM02 Hardlex Crystal SDY001J1 - 5S21-7A20

SEIKO 310W74JM02 Hardlex Crystal SDY001J1 - 5S21-7A20

$41.00

(0.0)

SEIKO 310W74JN01 Hardlex Crystal SAPR002 - 5P31-9A00

SEIKO 310W74JN01 Hardlex Crystal SAPR002 - 5P31-9A00

$41.00

(0.0)

Genuine Seiko 5S21 Parts

Original Seiko replacement parts for watches with calibre 5S21.

Find the right part

Check the case number on the back of your watch and search for it in our shop.
Not sure where to look? Read how to find the model or case number of your watch.
Every product page lists the case numbers and calibres the part is made for.

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Dials · Hands · Crystals · Bezels · Gaskets · Movement parts

See the full Seiko parts catalogue.

100% High Quality

We source original watches and compatible watch parts through established supply channels and trusted manufacturers.

1+ Year Warranty on All Products

Warranty applies as described in our warranty policy. Brand warranty terms and service conditions may differ by product type.

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We deliver our products globally, including to the EU, USA, UK, Canada, Australia, and many more countries, with care and reliability.

Specialist in Watches, Straps, Parts and Accessories

WatchPlaza specializes in watches, watch straps, parts and accessories for a wide range of brands and references.