Omega Speedmaster Moonwatch 42mm 20mm Two-Tone Steel & Gold-Tone Bracelet | 1450/432 STZ004194

Omega

£490.00 GBP
REF. STZ004194 / 50 / IJD Factory Part
Lug Width 20mm
Material Stainless Steel
End Style Curved
Type OEM ORIGINAL
Genuine OEM Part Original Manufacturer Part · Reference Validated
Reference Validated
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THE Omega LEGACY

Restore the hallmark profile of your timepiece. This OEM ORIGINAL stainless steel bracelet (Ref: STZ004194 / 50 / IJD) is the definitive choice for the Speedmaster Professional Moonwatch 42mm; supplied 3861, 1861 / 1863 and vintage applications require exact fit checks, keeping your Omega at its factory-correct aesthetic and prestige.

TECHNICAL ATTRIBUTES

  • Material & Construction: the same grade steel and metal alloys used by leading manufacturers — precision-machined, corrosion-resistant, and built to last.
  • Case Integration: Engineered with a precision Curved profile, 20.0mm lug width for a seamless, gap-free fit to the Speedmaster Professional Moonwatch 42mm; supplied 3861, 1861 / 1863 and vintage applications require exact fit checks case.
  • Hardware: Complete with integrated buckle, Approx. 180mm uninstalled (supplied measurement); fitted wrist capacity depends on case, links and clasp setting total length.
  • Authentic Provenance: A verified OEM ORIGINAL part, independently sourced and inspected before dispatch.
Genuine OEM Strap
Original Manufacturer Packaging
Reference STZ004194 / 50 / IJD
Material Stainless Steel
Lug Width 20mm
End Style Curved
Clasp Deployment Clasp
Length Approx. 180mm uninstalled (supplied measurement); fitted wrist capacity depends on case, links and clasp setting
Includes Buckle Complete with integrated buckle
Colour Multi
Fit For Speedmaster Professional Moonwatch 42mm; supplied 3861, 1861 / 1863 and vintage applications require exact fit checks

Designed for these Speedmaster Professional Moonwatch 42mm; supplied 3861, 1861 / 1863 and vintage applications require exact fit checks models:

COMPATIBLE & COMPLEMENTARY MODELS
20mm curved solid end links; supplied identifiers 1450/432 / Z019523, clasp STZ004194.
CALIBRE 3861 APPLICATIONS, 42mm
Speedmaster Professional Co-Axial Master Chronometer:
310.20.42.50.02.001 — Two-tone steel / Moonshine Gold watch; aesthetic comparison and supplied fitting candidate only, not equivalent bracelet material
310.30.42.50.04.001 — Lacquered white dial; supplied two-tone styling application
310.30.42.50.01.001 / 310.32.42.50.01.001 — Hesalite Moonwatch
310.30.42.50.01.002 / 310.32.42.50.01.002 — Sapphire Sandwich Moonwatch
CALIBRE 1861 / 1863 APPLICATIONS, 42mm
311.30.42.30.01.005 — Hesalite Moonwatch
311.30.42.30.01.006 — Sapphire Sandwich Moonwatch
3570.50.00
3572.50.00
3573.50.00
SPECIAL & HERITAGE APPLICATIONS, 42mm / SUPPLIED 20mm LUGS
311.30.42.30.99.001 — Supplied Apollo 11 anniversary application; supplied 50th-anniversary / steel-and-gold designation requires confirmation
Vintage Moonwatch case references:
145.022
145.0022
345.0808
FITMENT NOTES
All applications supplied by the merchant; exact factory pairings not independently verified. Confirm end-link curvature, actual 20mm lug spacing, spring-bar specification, hole position, case clearance and secure seating on the exact watch. Appropriate spring bars must match both the case and the bracelet; nominal 20mm width alone does not establish suitability. Particular care is needed for vintage and 3861 cases. Professional fitting recommended.
MATERIAL & SIZE NOTES
As supplied, stainless steel with yellow-gold-tone PVD treatment, not solid gold or equivalent to a precious-metal factory bracelet. Approx. 180mm uninstalled; no guaranteed 8.25-inch or larger wrist fit.
EXCLUSIONS
Speedmaster Reduced 39mm.
Dark Side of the Moon ceramic 44.25mm cases.
Other lug widths, mismatched end-link geometry or incompatible spring-bar arrangements. Watch not included.
Orders placed before 4pm (UK time) dispatched the same working day (Mon–Fri). All orders ship fully insured; signature required.
UK StandardRoyal Mail Special Delivery — Next working day
FREE
EuropeDHL Express — 3–5 working days
£25.00
Rest of WorldDHL Express — 3–8 working days
£45.00
View full shipping information
30-day returns & exchanges. Not genuine? Full refund.
Return WindowFrom the day of delivery
30 Days
ExchangesSwap for another size or style
Available
Item ConditionAll original packaging intact
Unworn
OEM Parts PolicyNo returns if fitted to watch
Sealed Only
AuthenticityBelieve it isn't genuine?
Full Refund
View full returns & exchange policy
1
Remove Current StrapUse the spring bar tool to depress the pin and gently slide the existing strap free from the lugs.
2
Align New StrapPosition the OEM strap between the lugs, ensuring the curved end sits flush against the case.
3
Secure Spring BarsCompress the spring bar, slot into position, and confirm both ends are locked into the lug holes.
No watchmaker required — takes under 5 minutes

12-Month Warranty Protection

All ORIX products come with our comprehensive 12-month warranty covering manufacturing defects and quality issues under normal use. Warranty registration verifies authenticity, activates priority support, and ensures you receive timely expiry reminders and expert care guidance—because premium components deserve premium care.

Coverage Includes:

  • Manufacturing defects: Defects in materials or workmanship that affect functionality
  • Functional failures: Parts that fail to perform as intended under normal use
  • OEM parts: All genuine OEM components purchased from our store
  • Repair or replacement: We will repair or replace defective items at our discretion

→ Register your warranty now

ORIX GB is an independent reseller specialising in genuine OEM watch straps. We are not affiliated with, authorised by, or endorsed by any watch manufacturer. All brand names, model names, and trademarks are the property of their respective owners and are used only to describe compatibility.

Omega Speedmaster Moonwatch 42mm 20mm Two-Tone Steel & Gold-Tone Bracelet | 1450/432 STZ004194
Omega Speedmaster Moonwatch 42mm 20mm Two-Tone Steel & Gold-Tone Bracelet | 1450/432 STZ004194
£490.00

One Watch. Infinite Looks. Every Occasion.

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The OEM Difference

Why Choose Genuine OEM?

Factory Original vs Aftermarket — the difference is in the details that matter.

Case Integration

Factory straps are engineered to fit flush against the watch case without gaps, ensuring structural integrity and a seamless, tailored aesthetic.

OEM Original
Precision engineered flush fit
Generic Aftermarket
Standard straight or gapped fit

Material

Genuine OEM components - reference-verified and individually inspected before dispatch. Materials and finish meet the original manufacturer's specification.

OEM Original
Premium rubber or exotic leather
Generic Aftermarket
Standard silicone or split leather

Clasp & Hardware

OEM clasps are machined from 316L polished steel with twin-trigger deployant mechanisms. Featuring the exact same hardware finish as the factory component.

OEM Original
316L polished clasp — twin-trigger
Generic Aftermarket
Standard pin buckle or low-grade clasp

Authentication

Every OEM strap is reference-verified and matched to the manufacturer part number. It arrives with traceable provenance and a certificate of authenticity.

OEM Original
Reference-verified with certificate
Generic Aftermarket
No reference number or verification

Resale Value

Maintaining a luxury timepiece with 100% factory original parts preserves its collectible value and integrity on the global secondary market.

OEM Original
Preserves full market value
Generic Aftermarket
Depreciates collector valuation

Warranty

All factory replacement parts are backed by a comprehensive manufacturer guarantee against defects in materials and craftsmanship.

OEM Original
12-month factory guarantee
Generic Aftermarket
Limited or no warranty provided

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