Seiko 5421 Parts - Genuine OEM Watch Parts

Cart

Your cart is empty

SEIKO 170N08AN00 Acrylic Crystal STK079J0 - 5421-0110

SEIKO 170N08AN00 Acrylic Crystal STK079J0 - 5421-0110

£19.00

(0.0)

SEIKO 180N10GN00 Hardlex Crystal 3421-0079

SEIKO 180N10GN00 Hardlex Crystal 3421-0079

£27.00

(0.0)

Sold out

SEIKO 180P01LN03 Hardlex Crystal SZN146J1 - 2P20-0110

SEIKO 180P01LN03 Hardlex Crystal SZN146J1 - 2P20-0110

£27.00

(0.0)

Sold out

SEIKO 180W04GN00 Hardlex Crystal 5421-0050

SEIKO 180W04GN00 Hardlex Crystal 5421-0050

£27.00

(0.0)

Sold out

SEIKO 190W12GN00 Hardlex Crystal 5421-0120

SEIKO 190W12GN00 Hardlex Crystal 5421-0120

£27.00

(0.0)

SEIKO 200W16GA00 Hardlex Crystal 5421-008A

SEIKO 200W16GA00 Hardlex Crystal 5421-008A

£27.00

(0.0)

Genuine Seiko 5421 Parts

Original Seiko replacement parts for watches with calibre 5421.

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.

Browse by part type

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.

Worldwide Fast Shipping

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.